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Commit 4d891e7d authored by Dmitri Plotnikov's avatar Dmitri Plotnikov
Browse files

Making observer registration customizable. 

There is a need to skip registering the observer
or register a different observer in cases when
we have an extremely chatty content provider
(think MediaStore).

Change-Id: Iadfb8e0193736cb231762a147c2df1491ad22e0e
parent 5a08b50e

api/current.xml

+15 −0
Original line number Diff line number Diff line
@@ -46584,6 +46584,21 @@ 
<parameter name="cursor" type="android.database.Cursor">

</parameter>

</method>

<method name="registerContentObserver"

 return="void"

 abstract="false"

 native="false"

 synchronized="false"

 static="false"

 final="false"

 deprecated="not deprecated"

 visibility="public"

>

<parameter name="cursor" type="android.database.Cursor">

</parameter>

<parameter name="observer" type="android.database.ContentObserver">

</parameter>

</method>

<method name="setProjection"

 return="void"

 abstract="false"

core/java/android/content/CursorLoader.java

+11 −2
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 


package android.content;



import android.database.ContentObserver;

import android.database.Cursor;

import android.net.Uri;
@@ -37,14 +38,22 @@ public class CursorLoader extends AsyncTaskLoader<Cursor> { 
    public Cursor loadInBackground() {

        Cursor cursor = getContext().getContentResolver().query(mUri, mProjection, mSelection,

                mSelectionArgs, mSortOrder);

        // Ensure the cursor window is filled

        if (cursor != null) {

            // Ensure the cursor window is filled

            cursor.getCount();

            cursor.registerContentObserver(mObserver);

            registerContentObserver(cursor, mObserver);

        }

        return cursor;

    }



    /**

     * Registers an observer to get notifications from the content provider

     * when the cursor needs to be refreshed.

     */

    public void registerContentObserver(Cursor cursor, ContentObserver observer) {

        cursor.registerContentObserver(mObserver);

    }



    /* Runs on the UI thread */

    @Override

    public void deliverResult(Cursor cursor) {