Allow system apps to add to settings dashboard

Allow system apps to add a tile to the top level of settings that
links to an activity through adding a filter for a specific action.
Determine the info for the tile based off manifest info for the
activity. Also allow the same for managed profiles, but show a dialog
in between to select which profile.

The category in which the item is to be placed must be in meta-data.
The icon and title can be specified through meta-data as well or
if unspecified the activity's label and icon will be used.

Also added an optional <external-tiles> tag to the dashboard
category xml, this allows Settings to put external tiles
in the middle of some categories (Personal does this).

Bug: 19443117
Change-Id: Idc9938d1549d181103a3030a8784b527215a8399

src/com/android/settings/dashboard/DashboardTile.java

@@ -21,8 +21,11 @@ import android.content.res.Resources;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.os.UserHandle;
 import android.text.TextUtils;
 
+import java.util.ArrayList;
+
 /**
  * Description of a single dashboard tile that the user can select.
  */
@@ -72,6 +75,11 @@ public class DashboardTile implements Parcelable {
      */
     public int iconRes;
 
+    /**
+     * Optional package to pull the icon resource from.
+     */
+    public String iconPkg;
+
     /**
      * Full class name of the fragment to display when this tile is
      * selected.
@@ -90,6 +98,11 @@ public class DashboardTile implements Parcelable {
      */
     public Intent intent;
 
+    /**
+     * Optional list of user handles which the intent should be launched on.
+     */
+    public ArrayList<UserHandle> userHandle = new ArrayList<>();
+
     /**
      * Optional additional data for use by subclasses of the activity
      */
@@ -136,6 +149,7 @@ public class DashboardTile implements Parcelable {
         dest.writeInt(summaryRes);
         TextUtils.writeToParcel(summary, dest, flags);
         dest.writeInt(iconRes);
+        dest.writeString(iconPkg);
         dest.writeString(fragment);
         dest.writeBundle(fragmentArguments);
         if (intent != null) {
@@ -144,6 +158,11 @@ public class DashboardTile implements Parcelable {
         } else {
             dest.writeInt(0);
         }
+        final int N = userHandle.size();
+        dest.writeInt(N);
+        for (int i = 0; i < N; i++) {
+            dest.writeParcelable(userHandle.get(i), flags);
+        }
         dest.writeBundle(extras);
     }
 
@@ -154,11 +173,16 @@ public class DashboardTile implements Parcelable {
         summaryRes = in.readInt();
         summary = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
         iconRes = in.readInt();
+        iconPkg = in.readString();
         fragment = in.readString();
         fragmentArguments = in.readBundle();
         if (in.readInt() != 0) {
             intent = Intent.CREATOR.createFromParcel(in);
         }
+        final int N = in.readInt();
+        for (int i = 0; i < N; i++) {
+            userHandle.add(UserHandle.CREATOR.createFromParcel(in));
+        }
         extras = in.readBundle();
     }