Merge "docs: Updated ShortcutManager API reference guide." into oc-dev
am: 80376a98a5
Change-Id: Iae8814e722f7861ecd96980d16c06a676c6ad1dc
This commit is contained in:
Kevin Hufnagle
@@ -36,161 +36,72 @@ import com.android.internal.annotations.VisibleForTesting;
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import java.util.List;
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/**
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* The ShortcutManager manages an app's <em>shortcuts</em>. Shortcuts provide users
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* with quick access to activities other than an app's main activity in the currently-active
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* launcher. For example,
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* an email app may publish the "compose new email" action, which will directly open the
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* compose activity. The {@link ShortcutInfo} class contains information about each of the
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* shortcuts themselves.
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* The ShortcutManager manages an app's <em>shortcuts</em>. Shortcuts provide users with quick
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* access to activities other than an app's main activity in the currently-active launcher, provided
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* that the launcher supports app shortcuts. For example, an email app may publish the "compose new
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* email" action, which will directly open the compose activity. The {@link ShortcutInfo} class
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* contains information about each of the shortcuts themselves.
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*
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* <h3>Static Shortcuts and Dynamic Shortcuts</h3>
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* <p>This page discusses the implementation details of the <code>ShortcutManager</code> class. For
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* guidance on performing operations on app shortcuts within your app, see the
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* <a href="/guide/topics/ui/shortcuts.html">App Shortcuts</a> feature guide.
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*
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* <p>
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* There are several different types of shortcuts:
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* <h3>Shortcut characteristics</h3>
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*
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* <ul>
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* <li><p>Static shortcuts are declared in a resource XML file, which is referenced in the publisher
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* app's <code>AndroidManifest.xml</code> file. These shortcuts are visually associated with an
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* app's launcher icon.
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* <p>Static shortcuts are published when an app is installed, and the details of these shortcuts
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* change when an app is upgraded with an updated XML file. Static shortcuts are immutable, and
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* their definitions, such as icons and labels, cannot be changed dynamically without upgrading the
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* publisher app.</li>
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* This section describes in-depth details about each shortcut type's usage and availability.
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*
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* <li>Dynamic shortcuts are published at runtime using this class's APIs. These shortcuts are
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* visually associated with an app's launcher icon. Apps can publish, update, and remove dynamic
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* shortcuts at runtime.
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* </ul>
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* <p class="note"><b>Important security note:</b> All shortcut information is stored in
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* <a href="/training/articles/direct-boot.html">credential encrypted storage</a>, so your app
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* cannot access a user's shortcuts until after they've unlocked the device.
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*
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* <p>Only main activities—activities that handle the {@code MAIN} action and the
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* {@code LAUNCHER} category—can have shortcuts.
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* If an app has multiple main activities, these activities have different sets
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* of shortcuts.
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* <h4>Static and dynamic shortcuts</h4>
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*
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* <p>Static shortcuts and dynamic shortcuts are shown in a supported launcher when the user
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* long-presses on an app's launcher icon. Note that the actual gesture may be different
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* depending on the launcher app.
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* performs a specific gesture. On currently-supported launchers, the gesture is a long-press on the
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* app's launcher icon, but the actual gesture may be different on other launcher apps.
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*
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* <p>Each launcher icon can have at most {@link #getMaxShortcutCountPerActivity()} number of
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* static and dynamic shortcuts combined.
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* <p>The {@link LauncherApps} class provides APIs for launcher apps to access shortcuts.
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*
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* <h4>Pinned shortcuts</h4>
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*
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* <h3>Pinning Shortcuts</h3>
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* <p>Because pinned shortcuts appear in the launcher itself, they're always visible. A pinned
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* shortcut is removed from the launcher only in the following situations:
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* <ul>
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* <li>The user removes it.
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* <li>The publisher app associated with the shortcut is uninstalled.
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* <li>The user performs the clear data action on the publisher app from the device's
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* <b>Settings</b> app.
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* </ul>
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*
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* <p>Apps running in the foreground can also <em>pin</em> shortcuts at runtime, subject to user
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* permission, using this class's APIs. Each pinned shortcut is a copy of a static shortcut or a
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* dynamic shortcut. Although users can pin a shortcut multiple times, the system calls the pinning
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* API only once to complete the pinning process. Unlike static and dynamic shortcuts, pinned
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* shortcuts appear as separate icons, visually distinct from the app's launcher icon, in the
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* launcher. There is no limit to the number of pinned shortcuts that an app can create.
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* <p>Because the system performs
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* <a href="/guide/topics/ui/shortcuts.html#backup-and-restore">backup and restore</a> on pinned
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* shortcuts automatically, these shortcuts' IDs should contain either stable, constant strings or
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* server-side identifiers, rather than identifiers generated locally that might not make sense on
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* other devices.
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*
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* <p>Pinned shortcuts <strong>cannot</strong> be removed by publisher apps. They're removed only
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* when the user removes them, when the publisher app is uninstalled, or when the user performs the
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* clear data action on the publisher app from the device's <b>Settings</b> app.
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* <h3>Shortcut display order</h3>
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*
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* <p>However, the publisher app can <em>disable</em> pinned shortcuts so they cannot be started.
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* See the following sections for details.
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* <p>When the launcher displays an app's shortcuts, they should appear in the following order:
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*
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* <h3>Updating and Disabling Shortcuts</h3>
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* <ul>
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* <li>Static shortcuts (if {@link ShortcutInfo#isDeclaredInManifest()} is {@code true}),
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* and then show dynamic shortcuts (if {@link ShortcutInfo#isDynamic()} is {@code true}).
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* <li>Within each shortcut type (static and dynamic), sort the shortcuts in order of increasing
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* rank according to {@link ShortcutInfo#getRank()}.
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* </ul>
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*
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* <p>When a dynamic shortcut is pinned, even when the publisher removes it as a dynamic shortcut,
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* the pinned shortcut will still be visible and launchable. This allows an app to have
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* more than {@link #getMaxShortcutCountPerActivity()} number of shortcuts.
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* <p>Shortcut ranks are non-negative, sequential integers that determine the order in which
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* shortcuts appear, assuming that the shortcuts are all in the same category. You can update ranks
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* of existing shortcuts when you call {@link #updateShortcuts(List)},
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* {@link #addDynamicShortcuts(List)}, or {@link #setDynamicShortcuts(List)}.
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*
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* <p>For example, suppose {@link #getMaxShortcutCountPerActivity()} is 5:
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* <ol>
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* <li>A chat app publishes 5 dynamic shortcuts for the 5 most recent
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* conversations (c1, c2, ..., c5).
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* <p class="note"><b>Note:</b> Ranks are auto-adjusted so that they're unique for each type of
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* shortcut (static or dynamic). For example, if there are 3 dynamic shortcuts with ranks 0, 1 and
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* 2, adding another dynamic shortcut with a rank of 1 represents a request to place this shortcut
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* at the second position. In response, the third and fourth shortcuts move closer to the bottom of
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* the shortcut list, with their ranks changing to 2 and 3, respectively.
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*
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* <li>The user pins all 5 of the shortcuts.
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*
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* <li>Later, the user has started 3 additional conversations (c6, c7, and c8),
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* so the publisher app
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* re-publishes its dynamic shortcuts. The new dynamic shortcut list is:
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* c4, c5, ..., c8.
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* The publisher app has to remove c1, c2, and c3 because it can't have more than
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* 5 dynamic shortcuts.
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*
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* <li>However, even though c1, c2, and c3 are no longer dynamic shortcuts, the pinned
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* shortcuts for these conversations are still available and launchable.
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*
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* <li>At this point, the user can access a total of 8 shortcuts that link to activities in
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* the publisher app, including the 3 pinned
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* shortcuts, even though an app can have at most 5 dynamic shortcuts.
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*
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* <li>The app can use {@link #updateShortcuts(List)} to update <em>any</em> of the existing
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* 8 shortcuts, when, for example, the chat peers' icons have changed.
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* </ol>
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* The {@link #addDynamicShortcuts(List)} and {@link #setDynamicShortcuts(List)} methods
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* can also be used
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* to update existing shortcuts with the same IDs, but they <b>cannot</b> be used
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* for updating non-dynamic, pinned shortcuts because these two methods try to convert the given
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* lists of shortcuts to dynamic shortcuts.
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*
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*
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* <h4>Disabling Static Shortcuts</h4>
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* <p>When an app is upgraded and the new version
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* no longer uses a static shortcut that appeared in the previous version, this deprecated
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* shortcut isn't published as a static shortcut.
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*
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* <p>If the deprecated shortcut is pinned, then the pinned shortcut will remain on the launcher,
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* but it's disabled automatically. When a pinned shortcut is disabled, this class's APIs cannot
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* update it.
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*
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* <h4>Disabling Dynamic Shortcuts</h4>
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* Sometimes pinned shortcuts become obsolete and may not be usable. For example, a pinned shortcut
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* to a group chat becomes unusable when the associated group chat is deleted. In cases like this,
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* apps should use {@link #disableShortcuts(List)}, which removes the specified dynamic
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* shortcuts and also makes any specified pinned shortcuts un-launchable.
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* The {@link #disableShortcuts(List, CharSequence)} method can also be used to disable shortcuts
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* and show users a custom error message when they attempt to launch the disabled shortcuts.
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*
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*
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* <h3>Publishing Static Shortcuts</h3>
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*
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* <p>
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* In order to add static shortcuts to your app, first add
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* {@code <meta-data android:name="android.app.shortcuts" />} to your main activity in
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* AndroidManifest.xml:
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* <pre>
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*<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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* package="com.example.myapplication">
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* <application ... >
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* <activity android:name="Main">
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* <intent-filter>
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* <action android:name="android.intent.action.MAIN" />
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* <category android:name="android.intent.category.LAUNCHER" />
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* </intent-filter>
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* <strong><meta-data android:name="android.app.shortcuts"
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* android:resource="@xml/shortcuts" /></strong>
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* </activity>
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* </application>
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*</manifest>
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* </pre>
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*
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* Then, define your app's static shortcuts in the <code>res/xml/shortcuts.xml</code>
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* file:
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* <pre>
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*<shortcuts xmlns:android="http://schemas.android.com/apk/res/android">
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* <shortcut
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* android:shortcutId="compose"
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* android:enabled="true"
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* android:icon="@drawable/compose_icon"
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* android:shortcutShortLabel="@string/compose_shortcut_short_label1"
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* android:shortcutLongLabel="@string/compose_shortcut_long_label1"
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* android:shortcutDisabledMessage="@string/compose_disabled_message1">
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* <intent
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* android:action="android.intent.action.VIEW"
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* android:targetPackage="com.example.myapplication"
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* android:targetClass="com.example.myapplication.ComposeActivity" />
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* <!-- If your shortcut is associated with multiple intents, include them
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* here. The last intent in the list is what the user sees when they
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* launch this shortcut. -->
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* <categories android:name="android.shortcut.conversation" />
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* </shortcut>
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* <!-- Specify more shortcuts here. -->
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*</shortcuts>
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* </pre>
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* <h3>Options for static shortcuts</h3>
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*
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* The following list includes descriptions for the different attributes within a static shortcut:
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* <dl>
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@@ -236,9 +147,10 @@ import java.util.List;
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* {@code android:action} is mandatory.
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* See <a href="{@docRoot}guide/topics/ui/settings.html#Intents">Using intents</a> for the
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* other supported tags.
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* You can provide multiple intents for a single shortcut so that the last defined activity is launched
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* with the other activities in the <a href="/guide/components/tasks-and-back-stack.html">back stack</a>.
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* See {@link android.app.TaskStackBuilder} for details.
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* <p>You can provide multiple intents for a single shortcut so that the last defined activity is
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* launched with the other activities in the
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* <a href="/guide/components/tasks-and-back-stack.html">back stack</a>. See
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* {@link android.app.TaskStackBuilder} for details.
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* <p><b>Note:</b> String resources may not be used within an {@code <intent>} element.
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* </dd>
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* <dt>{@code categories}</dt>
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@@ -247,337 +159,92 @@ import java.util.List;
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* </dd>
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* </dl>
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*
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* <h3>Publishing Dynamic Shortcuts</h3>
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*
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* <p>
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* Apps can publish dynamic shortcuts with {@link #setDynamicShortcuts(List)}
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* or {@link #addDynamicShortcuts(List)}. The {@link #updateShortcuts(List)} method can also be
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* used to update existing, mutable shortcuts.
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* Use {@link #removeDynamicShortcuts(List)} or {@link #removeAllDynamicShortcuts()} to remove
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* dynamic shortcuts.
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*
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* <p>The following code snippet shows how to create a single dynamic shortcut:
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* <pre>
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*ShortcutManager shortcutManager = getSystemService(ShortcutManager.class);
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*
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*ShortcutInfo shortcut = new ShortcutInfo.Builder(this, "id1")
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* .setShortLabel("Web site")
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* .setLongLabel("Open the web site")
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* .setIcon(Icon.createWithResource(context, R.drawable.icon_website))
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* .setIntent(new Intent(Intent.ACTION_VIEW,
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* Uri.parse("https://www.mysite.example.com/")))
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* .build();
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*
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*shortcutManager.setDynamicShortcuts(Arrays.asList(shortcut));
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* </pre>
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*
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* <h3>Publishing Pinned Shortcuts</h3>
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*
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* <p>Apps can pin an existing shortcut (either static or dynamic) or an entirely new shortcut to a
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* supported launcher programatically using {@link #requestPinShortcut(ShortcutInfo, IntentSender)}.
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* You pass two arguments into this method:
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*
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* <ul>
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* <li>A {@link ShortcutInfo} object – If the shortcut already exists, this object should
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* contain only the shortcut's ID. Otherwise, the new {@link ShortcutInfo} object must contain an
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* ID, an intent, and a short label for the new shortcut.
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* <li><p>A {@link android.app.PendingIntent} object – This intent represents the callback
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* that your app receives if the shortcut is successfully pinned to the device's launcher.
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* <p><b>Note:</b> If the user doesn't allow the shortcut to be pinned to the launcher, the
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* pinning process fails, and the {@link Intent} object that is passed into this
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* {@link android.app.PendingIntent} object isn't executed.
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* <div class="note"><p><b>Note:</b> Due to background execution limits introduced in Android
|
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* {@link VERSION_CODES#O}, it's best to use a
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* <a href="{@docRoot}guide/components/broadcasts.html#manifest-declared_receivers">
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* manifest-declared receiver</a> to receive a callback.
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* <p>Also, to prevent other apps from invoking the receiver, add the attribute assignment
|
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* <code>android:exported="false"</code> to the receiver's manifest entry.</p></div>
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* </ul>
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*
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* The following code snippet shows how to pin a single shortcut that already exists and is enabled:
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*
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* <pre>
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*ShortcutManager mShortcutManager =
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* context.getSystemService(ShortcutManager.class);
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*
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*if (mShortcutManager.isRequestPinShortcutSupported()) {
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*
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* // This example defines a new shortcut; that is, this shortcut hasn't
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* // been published before.
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* ShortcutInfo pinShortcutInfo = new ShortcutInfo.Builder()
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* .setIcon(myIcon)
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* .setShortLabel("My awesome shortcut")
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* .setIntent(myIntent)
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* .build();
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*
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* PendingIntent resultPendingIntent = null;
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*
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||||
* // Create the following Intent and PendingIntent objects only if your app
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* // needs to be notified that the user allowed the shortcut to be pinned.
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* // Use a boolean value, such as "appNeedsNotifying", to define this behavior.
|
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* if (appNeedsNotifying) {
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* // We assume here the app has a manifest-declared receiver "MyReceiver".
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* Intent pinnedShortcutCallbackIntent = new Intent(context, MyReceiver.class);
|
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*
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* // Configure the intent so that your app's broadcast receiver gets
|
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* // the callback successfully.
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* PendingIntent successCallback = PendingIntent.createBroadcast(context, 0,
|
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* pinnedShortcutCallbackIntent);
|
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*
|
||||
* resultPendingIntent = successCallback.getIntentSender();
|
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* }
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*
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* mShortcutManager.requestPinShortcut(pinShortcutInfo, resultPendingIntent);
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*}
|
||||
* </pre>
|
||||
*
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||||
* <p class="note"><strong>Note:</strong> As you add logic in your app to make requests to pin
|
||||
* shortcuts, keep in mind that not all launchers support pinning of shortcuts. To determine whether
|
||||
* your app can complete this process on a particular device, check the return value of
|
||||
* {@link #isRequestPinShortcutSupported()}. Based on this return value, you might decide to hide
|
||||
* the option in your app that allows users to pin a shortcut.
|
||||
*
|
||||
* <p class="note"><strong>Note:</strong> See also the support library APIs
|
||||
* {@link android.support.v4.content.pm.ShortcutManagerCompat#isRequestPinShortcutSupported(
|
||||
* Context)} and
|
||||
* {@link android.support.v4.content.pm.ShortcutManagerCompat#requestPinShortcut(
|
||||
* Context, ShortcutInfoCompat, IntentSender)}, which works on Android versions lower than
|
||||
* {@link VERSION_CODES#O} by falling back to the deprecated private intent
|
||||
* {@code com.android.launcher.action.INSTALL_SHORTCUT}.
|
||||
*
|
||||
* <h4>Custom Activity for Pinning Shortcuts</h4>
|
||||
*
|
||||
* <p>You can also create a specialized activity that helps users create shortcuts, complete with
|
||||
* custom options and a confirmation button. In your app's manifest file, add
|
||||
* {@link Intent#ACTION_CREATE_SHORTCUT} to the activity's <code><intent-filter></code>
|
||||
* element, as shown in the following snippet:
|
||||
*
|
||||
* <pre>
|
||||
*<manifest>
|
||||
* ...
|
||||
* <application>
|
||||
* <activity android:name="com.example.MyCustomPromptToPinShortcut" ... >
|
||||
* <intent-filter
|
||||
* action android:name="android.intent.action.ACTION_CREATE_SHORTCUT">
|
||||
* ...
|
||||
* </intent-filter>
|
||||
* </activity>
|
||||
* ...
|
||||
* </application>
|
||||
*</manifest>
|
||||
* </pre>
|
||||
*
|
||||
* <p>When you use this specialized activity in your app, the following sequence of steps takes
|
||||
* place:</p>
|
||||
* <h3>Updating shortcuts</h3>
|
||||
*
|
||||
* <p>As an example, suppose {@link #getMaxShortcutCountPerActivity()} is 5:
|
||||
* <ol>
|
||||
* <li>The user attempts to create a shortcut, triggering the system to start the specialized
|
||||
* activity.</li>
|
||||
* <li>The user sets options for the shortcut.</li>
|
||||
* <li>The user selects the confirmation button, allowing your app to create the shortcut using
|
||||
* the {@link #createShortcutResultIntent(ShortcutInfo)} method. This method returns an
|
||||
* {@link Intent}, which your app relays back to the previously-executing activity using
|
||||
* {@link Activity#setResult(int)}.</li>
|
||||
* <li>Your app calls {@link Activity#finish()} on the activity used for creating the customized
|
||||
* shortcut.</li>
|
||||
* <li>A chat app publishes 5 dynamic shortcuts for the 5 most recent
|
||||
* conversations (c1, c2, ..., c5).
|
||||
*
|
||||
* <li>The user pins all 5 of the shortcuts.
|
||||
*
|
||||
* <li>Later, the user has started 3 additional conversations (c6, c7, and c8),
|
||||
* so the publisher app
|
||||
* re-publishes its dynamic shortcuts. The new dynamic shortcut list is:
|
||||
* c4, c5, ..., c8.
|
||||
* The publisher app has to remove c1, c2, and c3 because it can't have more than
|
||||
* 5 dynamic shortcuts.
|
||||
*
|
||||
* <li>However, even though c1, c2, and c3 are no longer dynamic shortcuts, the pinned
|
||||
* shortcuts for these conversations are still available and launchable.
|
||||
*
|
||||
* <li>At this point, the user can access a total of 8 shortcuts that link to activities in
|
||||
* the publisher app, including the 3 pinned shortcuts, even though an app can have at most 5
|
||||
* dynamic shortcuts.
|
||||
*
|
||||
* <li>The app can use {@link #updateShortcuts(List)} to update <em>any</em> of the existing
|
||||
* 8 shortcuts, when, for example, the chat peers' icons have changed.
|
||||
* <p>The {@link #addDynamicShortcuts(List)} and {@link #setDynamicShortcuts(List)} methods
|
||||
* can also be used to update existing shortcuts with the same IDs, but they <b>cannot</b> be
|
||||
* used for updating non-dynamic, pinned shortcuts because these 2 methods try to convert the
|
||||
* given lists of shortcuts to dynamic shortcuts.
|
||||
* </ol>
|
||||
*
|
||||
* <h3>Shortcut Intents</h3>
|
||||
* <h3>Shortcut intents</h3>
|
||||
*
|
||||
* <p>
|
||||
* Dynamic shortcuts can be published with any set of {@link Intent#addFlags Intent} flags.
|
||||
* Typically, {@link Intent#FLAG_ACTIVITY_CLEAR_TASK} is specified, possibly along with other
|
||||
* flags; otherwise, if the app is already running, the app is simply brought to
|
||||
* the foreground, and the target activity may not appear.
|
||||
*
|
||||
* <p>The {@link ShortcutInfo.Builder#setIntents(Intent[])} method can be used instead of
|
||||
* {@link ShortcutInfo.Builder#setIntent(Intent)} with {@link android.app.TaskStackBuilder}
|
||||
* in order to launch an activity with other activities in the back stack.
|
||||
* When the user selects a shortcut to load an activity with a back stack,
|
||||
* then presses the back key, a parent activity from the same app will be shown
|
||||
* instead of the user being navigated back to the launcher.
|
||||
*
|
||||
* <p>Static shortcuts can also have multiple intents to achieve the same effect.
|
||||
* In order to associate multiple {@link Intent} objects with a shortcut, simply list multiple
|
||||
* <code><intent></code> elements within a single <code><shortcut></code> element.
|
||||
* The last intent specifies what the user sees when they launch a shortcut.
|
||||
*
|
||||
* <p>Static shortcuts <b>cannot</b> have custom intent flags.
|
||||
* The first intent of a static shortcut will always have {@link Intent#FLAG_ACTIVITY_NEW_TASK}
|
||||
* and {@link Intent#FLAG_ACTIVITY_CLEAR_TASK} set.
|
||||
* This means, when the app is already running, all the existing activities will be
|
||||
* destroyed when a static shortcut is launched.
|
||||
* If this behavior is not desirable, you can use a <em>trampoline activity</em>,
|
||||
* or an invisible activity that starts another activity in {@link Activity#onCreate},
|
||||
* then calls {@link Activity#finish()}.
|
||||
* The first activity should include an attribute setting
|
||||
* of {@code android:taskAffinity=""} in the app's <code>AndroidManifest.xml</code>
|
||||
* file, and the intent within the static shortcut should point at this first activity.
|
||||
* and {@link Intent#FLAG_ACTIVITY_CLEAR_TASK} set. This means, when the app is already running, all
|
||||
* the existing activities in your app will be destroyed when a static shortcut is launched.
|
||||
* If this behavior is not desirable, you can use a <em>trampoline activity</em>, or an invisible
|
||||
* activity that starts another activity in {@link Activity#onCreate}, then calls
|
||||
* {@link Activity#finish()}:
|
||||
* <ol>
|
||||
* <li>In the <code>AndroidManifest.xml</code> file, the trampoline activity should include the
|
||||
* attribute assignment {@code android:taskAffinity=""}.
|
||||
* <li>In the shortcuts resource file, the intent within the static shortcut should point at
|
||||
* the trampoline activity.
|
||||
* </ol>
|
||||
*
|
||||
* <h3>Handling system locale changes</h3>
|
||||
*
|
||||
* <h3>Showing New Information in a Shortcut</h3>
|
||||
* <p>
|
||||
* In order to avoid confusion, you should not use {@link #updateShortcuts(List)} to update
|
||||
* a shortcut so that it contains conceptually different information.
|
||||
* <p>Apps should update dynamic and pinned shortcuts when the system locale changes using the
|
||||
* {@link Intent#ACTION_LOCALE_CHANGED} broadcast. When the system locale changes,
|
||||
* <a href="/guide/topics/ui/shortcuts.html#rate-limit">rate limiting</a> is reset, so even
|
||||
* background apps can add and update dynamic shortcuts until the rate limit is reached again.
|
||||
*
|
||||
* <p>For example, a phone app may publish the most frequently called contact as a dynamic
|
||||
* shortcut. Over time, this contact may change. When it does, the app should
|
||||
* represent the changed contact with a new shortcut that contains a different ID, using either
|
||||
* {@link #setDynamicShortcuts(List)} or {@link #addDynamicShortcuts(List)}, rather than updating
|
||||
* the existing shortcut with {@link #updateShortcuts(List)}.
|
||||
* This is because when the shortcut is pinned, changing
|
||||
* it to reference a different contact will likely confuse the user.
|
||||
* <h3>Shortcut limits</h3>
|
||||
*
|
||||
* <p>On the other hand, when the
|
||||
* contact's information has changed, such as the name or picture, the app should
|
||||
* use {@link #updateShortcuts(List)} so that the pinned shortcut is updated too.
|
||||
* <p>Only main activities—activities that handle the {@code MAIN} action and the
|
||||
* {@code LAUNCHER} category—can have shortcuts. If an app has multiple main activities, you
|
||||
* need to define the set of shortcuts for <em>each</em> activity.
|
||||
*
|
||||
* <p>Each launcher icon can have at most {@link #getMaxShortcutCountPerActivity()} number of
|
||||
* static and dynamic shortcuts combined. There is no limit to the number of pinned shortcuts that
|
||||
* an app can create.
|
||||
*
|
||||
* <h3>Shortcut Display Order</h3>
|
||||
* When the launcher displays the shortcuts that are associated with a particular launcher icon,
|
||||
* the shortcuts should appear in the following order:
|
||||
* <ul>
|
||||
* <li>First show static shortcuts
|
||||
* (if {@link ShortcutInfo#isDeclaredInManifest()} is {@code true}),
|
||||
* and then show dynamic shortcuts (if {@link ShortcutInfo#isDynamic()} is {@code true}).
|
||||
* <li>Within each category of shortcuts (static and dynamic), sort the shortcuts in order
|
||||
* of increasing rank according to {@link ShortcutInfo#getRank()}.
|
||||
* </ul>
|
||||
* <p>Shortcut ranks are non-negative, sequential integers
|
||||
* that determine the order in which shortcuts appear, assuming that the shortcuts are all in
|
||||
* the same category.
|
||||
* Ranks of existing shortcuts can be updated with
|
||||
* {@link #updateShortcuts(List)}. You can also use {@link #addDynamicShortcuts(List)} and
|
||||
* {@link #setDynamicShortcuts(List)}.
|
||||
* <p>When a dynamic shortcut is pinned, even when the publisher removes it as a dynamic shortcut,
|
||||
* the pinned shortcut is still visible and launchable. This allows an app to have more than
|
||||
* {@link #getMaxShortcutCountPerActivity()} number of shortcuts.
|
||||
*
|
||||
* <p>Ranks are auto-adjusted so that they're unique for each target activity in each category
|
||||
* (static or dynamic). For example, if there are 3 dynamic shortcuts with ranks 0, 1 and 2,
|
||||
* adding another dynamic shortcut with a rank of 1 represents a request to place this shortcut at
|
||||
* the second position.
|
||||
* In response, the third and fourth shortcuts move closer to the bottom of the shortcut list,
|
||||
* with their ranks changing to 2 and 3, respectively.
|
||||
* <h4>Rate limiting</h4>
|
||||
*
|
||||
* <h3>Rate Limiting</h3>
|
||||
* <p>When <a href="/guide/topics/ui/shortcuts.html#rate-limit">rate limiting</a> is active,
|
||||
* {@link #isRateLimitingActive()} returns {@code true}.
|
||||
*
|
||||
* <p>
|
||||
* Calls to {@link #setDynamicShortcuts(List)}, {@link #addDynamicShortcuts(List)}, and
|
||||
* {@link #updateShortcuts(List)} may be rate-limited when called by <em>background apps</em>, or
|
||||
* apps with no foreground activity or service. When you attempt to call these methods
|
||||
* from a background app after exceeding the rate limit, these APIs return {@code false}.
|
||||
*
|
||||
* <p>Apps with a foreground activity or service are not rate-limited.
|
||||
*
|
||||
* <p>Rate-limiting is reset upon certain events, so that even background apps
|
||||
* can call these APIs until the rate limit is reached again.
|
||||
* These events include the following:
|
||||
* <p>Rate limiting is reset upon certain events, so even background apps can call these APIs until
|
||||
* the rate limit is reached again. These events include the following:
|
||||
* <ul>
|
||||
* <li>An app comes to the foreground.
|
||||
* <li>The system locale changes.
|
||||
* <li>The user performs the <strong>inline reply</strong> action on a notification.
|
||||
* </ul>
|
||||
*
|
||||
* <p>When rate-limiting is active, {@link #isRateLimitingActive()} returns {@code true}.
|
||||
*
|
||||
* <h4>Resetting rate-limiting for testing</h4>
|
||||
*
|
||||
* <p>
|
||||
* If your app is rate-limited during development or testing, you can use the
|
||||
* <strong>Reset ShortcutManager rate-limiting</strong> development option or
|
||||
* the following {@code adb} command to reset it:
|
||||
* <pre class="no-pretty-print">
|
||||
*$ adb shell cmd shortcut reset-throttling [ --user USER-ID ]
|
||||
* </pre>
|
||||
*
|
||||
* <h3>Handling System Locale Changes</h3>
|
||||
*
|
||||
* <p>
|
||||
* Apps should update dynamic and pinned shortcuts when the system locale changes
|
||||
* using the {@link Intent#ACTION_LOCALE_CHANGED} broadcast.
|
||||
*
|
||||
* <p>When the system locale changes, rate-limiting is reset, so even background apps
|
||||
* can add and update dynamic shortcuts until the rate limit is reached again.
|
||||
*
|
||||
*
|
||||
* <h3>Backup and Restore</h3>
|
||||
*
|
||||
* <p>
|
||||
* When an app has the {@code android:allowBackup="true"} attribute assignment included
|
||||
* in its <code>AndroidManifest.xml</code> file, pinned shortcuts are
|
||||
* backed up automatically and are restored when the user sets up a new device.
|
||||
*
|
||||
* <h4>Categories of shortcuts that are backed up</h4>
|
||||
*
|
||||
* <ul>
|
||||
* <li>Pinned shortcuts are backed up. Bitmap icons are not backed up by the system,
|
||||
* so launcher apps should back them up and restore them so that the user still sees icons
|
||||
* for pinned shortcuts on the launcher. Apps can always use
|
||||
* {@link #updateShortcuts(List)} to re-publish icons.
|
||||
*
|
||||
* <li>Static shortcuts aren't backed up, but when an app is re-installed on a new
|
||||
* device, they are re-published from the <code>AndroidManifest.xml</code> file.
|
||||
*
|
||||
* <li>Dynamic shortcuts <b>aren't</b> backed up.
|
||||
* </ul>
|
||||
*
|
||||
* <p>Because dynamic shortcuts are not restored, it is recommended that apps check
|
||||
* currently-published dynamic shortcuts using {@link #getDynamicShortcuts()}
|
||||
* each time they are launched, and they should re-publish
|
||||
* dynamic shortcuts when necessary.
|
||||
*
|
||||
* <pre>
|
||||
*public class MainActivity extends Activity {
|
||||
* public void onCreate(Bundle savedInstanceState) {
|
||||
* super.onCreate(savedInstanceState);
|
||||
* ShortcutManager shortcutManager =
|
||||
* getSystemService(ShortcutManager.class);
|
||||
*
|
||||
* if (shortcutManager.getDynamicShortcuts().size() == 0) {
|
||||
* // Application restored. Need to re-publish dynamic shortcuts.
|
||||
* if (shortcutManager.getPinnedShortcuts().size() > 0) {
|
||||
* // Pinned shortcuts have been restored. Use
|
||||
* // updateShortcuts() to make sure they contain
|
||||
* // up-to-date information.
|
||||
* }
|
||||
* }
|
||||
* }
|
||||
* // ...
|
||||
*}
|
||||
* </pre>
|
||||
*
|
||||
*
|
||||
* <h4>Backup/restore and shortcut IDs</h4>
|
||||
* <p>
|
||||
* Because pinned shortcuts are backed up and restored on new devices, shortcut IDs
|
||||
* should contain either stable, constant strings or server-side identifiers,
|
||||
* rather than identifiers generated locally that might not make sense on other devices.
|
||||
*
|
||||
*
|
||||
* <h3>Report Shortcut Usage and Prediction</h3>
|
||||
* <p>
|
||||
* Launcher apps may be capable of predicting which shortcuts will most likely be
|
||||
* used at a given time by examining the shortcut usage history data.
|
||||
*
|
||||
* <p>In order to provide launchers with such data, publisher apps should
|
||||
* report the shortcuts that are used with {@link #reportShortcutUsed(String)}
|
||||
* when a shortcut is selected,
|
||||
* <b>or when an action equivalent to a shortcut is taken by the user even if it wasn't started
|
||||
* with the shortcut</b>.
|
||||
*
|
||||
* <p>For example, suppose a navigation app supports "navigate to work" as a shortcut.
|
||||
* It should then report when the user selects this shortcut <b>and</b> when the user chooses
|
||||
* to navigate to work within the app itself.
|
||||
* This helps the launcher app
|
||||
* learn that the user wants to navigate to work at a certain time every
|
||||
* weekday, and it can then show this shortcut in a suggestion list at the right time.
|
||||
*
|
||||
* <h3>Launcher API</h3>
|
||||
*
|
||||
* The {@link LauncherApps} class provides APIs for launcher apps to access shortcuts.
|
||||
*
|
||||
*
|
||||
* <h3>Direct Boot and Shortcuts</h3>
|
||||
*
|
||||
* All shortcut information is stored in credential encrypted storage, so no shortcuts can be
|
||||
* accessed when the user is locked.
|
||||
*/
|
||||
@SystemService(Context.SHORTCUT_SERVICE)
|
||||
public class ShortcutManager {
|
||||
|
||||
Reference in New Issue
Block a user