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docs: improve docs for sqlite package summary am: 59640a9f1c

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am: 195099dc32

Change-Id: I1adac6c932d1cc0d593c5cd29d8695c5b0836dff
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Mark Lu
2016-09-26 17:34:39 +00:00
committed by android-build-merger
parent b5be488467 195099dc32
commit 2f90f2c53a
1 changed files with 39 additions and 10 deletions
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core/java/android/database/sqlite/package.html
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@@ -6,15 +6,44 @@ classes that an application would use to manage its own private database.
Applications use these classes to manage private databases. If creating a
content provider, you will probably have to use these classes to create and
manage your own database to store content. See <a
href="{@docRoot}guide/topics/providers/content-providers.html">Content Providers</a> to learn
the conventions for implementing a content provider. See the
NotePadProvider class in the NotePad sample application in the SDK for an
example of a content provider. Android ships with SQLite version 3.4.0
<p>If you are working with data sent to you by a provider, you will not use
these SQLite classes, but instead use the generic {@link android.database}
classes.
<p>Android ships with the sqlite3 database tool in the <code>tools/</code>
folder. You can use this tool to browse or run SQL commands on the device. Run by
typing <code>sqlite3</code> in a shell window.
href="{@docRoot}guide/topics/providers/content-providers.html">Content Providers</a>
to learn the conventions for implementing a content provider. If you are working
with data sent to you by a provider, you do not use these SQLite classes, but
instead use the generic {@link android.database} classes.
<p>The Android SDK and Android emulators both include the
<a href="{@docRoot}studio/command-line/sqlite3.html">sqlite3</a> command-line
database tool. On your development machine, run the tool from the
<code>platform-tools/</code> folder of your SDK. On the emulator, run the tool
with adb shell, for example, <code>adb -e shell sqlite3</code>.
<p>The version of SQLite depends on the version of Android. See the following table:
<table style="width:auto;">
<tr><th>Android API</th><th>SQLite Version</th></tr>
<tr><td>API 24</td><td>3.9</td></tr>
<tr><td>API 21</td><td>3.8</td></tr>
<tr><td>API 11</td><td>3.7</td></tr>
<tr><td>API 8</td><td>3.6</td></tr>
<tr><td>API 3</td><td>3.5</td></tr>
<tr><td>API 1</td><td>3.4</td></tr>
</table>
<p>Some device manufacturers include different versions of SQLite on their devices.
There are two ways to programmatically determine the version number.
<ul>
<li>If available, use the sqlite3 tool, for example:
<code>adb -e shell sqlite3 --version</code>.</li>
<li>Create and query an in-memory database as shown in the following code sample:
<pre>
String query = "select sqlite_version() AS sqlite_version";
SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase(":memory:", null);
Cursor cursor = db.rawQuery(query, null);
String sqliteVersion = "";
if (cursor.moveToNext()) {
sqliteVersion = cursor.getString(0);
}</pre>
</li>
</ul>
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