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Commit 3d32f6e5 authored by Jeff Hamilton's avatar Jeff Hamilton
Browse files

Add Activity.isChangingConfiguration(). 

This allows activities to know if they're being
torn down due to a configuration change.

Bug: 2557550
Change-Id: Ibd9bf5a06c92dbe3789049b84133cf4754381873
parent 7819e1d7

api/current.xml

+11 −0
Original line number Diff line number Diff line
@@ -19677,6 +19677,17 @@ 
 visibility="public"

>

</method>

<method name="isChangingConfigurations"

 return="boolean"

 abstract="false"

 native="false"

 synchronized="false"

 static="false"

 final="false"

 deprecated="not deprecated"

 visibility="public"

>

</method>

<method name="isChild"

 return="boolean"

 abstract="false"

core/java/android/app/Activity.java

+15 −0
Original line number Diff line number Diff line
@@ -637,6 +637,8 @@ public class Activity extends ContextThemeWrapper 
    private boolean mStopped;

    boolean mFinished;

    boolean mStartedActivity;

    /** true if the activity is being destroyed in order to recreate it with a new configuration */

    /*package*/ boolean mChangingConfigurations = false;

    /*package*/ int mConfigChangeFlags;

    /*package*/ Configuration mCurrentConfig;

    private SearchManager mSearchManager;
@@ -3401,6 +3403,19 @@ public class Activity extends ContextThemeWrapper 
        return mFinished;

    }



    /**

     * Check to see whether this activity is in the process of being destroyed in order to be

     * recreated with a new configuration. This is often used in

     * {@link #onStop} to determine whether the state needs to be cleaned up or will be passed

     * on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}.

     * 

     * @return If the activity is being torn down in order to be recreated with a new configuration,

     * returns true; else returns false.

     */

    public boolean isChangingConfigurations() {

        return mChangingConfigurations;

    }



    /**

     * Call this when your activity is done and should be closed.  The

     * ActivityResult is propagated back to whoever launched you via

core/java/android/app/ActivityThread.java

+3 −0
Original line number Diff line number Diff line
@@ -3575,6 +3575,9 @@ public final class ActivityThread { 
            if (finishing) {

                r.activity.mFinished = true;

            }

            if (getNonConfigInstance) {

                r.activity.mChangingConfigurations = true;

            }

            if (!r.paused) {

                try {

                    r.activity.mCalled = false;