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Commit 3c464bde authored by Adam Powell's avatar Adam Powell
Browse files

Add TaskStackBuilder#addParentStack(ComponentName) 

Let TaskStackBuilder discover a parent activity stack by ComponentName
in addition to explicit Activity classes.

Change-Id: I18b8378548ed1d6ef033800e6a3e11ab965d07e5
parent 03d2f292

api/current.txt

+1 −0
Original line number Diff line number Diff line
@@ -3999,6 +3999,7 @@ package android.app { 
    method public android.app.TaskStackBuilder addNextIntent(android.content.Intent);

    method public android.app.TaskStackBuilder addParentStack(android.app.Activity);

    method public android.app.TaskStackBuilder addParentStack(java.lang.Class<?>);

    method public android.app.TaskStackBuilder addParentStack(android.content.ComponentName);

    method public static android.app.TaskStackBuilder from(android.content.Context);

    method public android.content.Intent getIntent(int);

    method public int getIntentCount();

core/java/android/app/TaskStackBuilder.java

+39 −2
Original line number Diff line number Diff line
@@ -91,8 +91,10 @@ public class TaskStackBuilder implements Iterable<Intent> { 


    /**

     * Add the activity parent chain as specified by the

     * {@link android.R.attr#parentActivityName parentActivityName} attribute of the activity

     * (or activity-alias) element in the application's manifest to the task stack builder.

     * {@link Activity#getParentActivityIntent() getParentActivityIntent()} method of the activity

     * specified and the {@link android.R.attr#parentActivityName parentActivityName} attributes

     * of each successive activity (or activity-alias) element in the application's manifest

     * to the task stack builder.

     *

     * @param sourceActivity All parents of this activity will be added

     * @return This TaskStackBuilder for method chaining
@@ -155,6 +157,41 @@ public class TaskStackBuilder implements Iterable<Intent> { 
        return this;

    }



    /**

     * Add the activity parent chain as specified by the

     * {@link android.R.attr#parentActivityName parentActivityName} attribute of the activity

     * (or activity-alias) element in the application's manifest to the task stack builder.

     *

     * @param sourceActivityName Must specify an Activity component. All parents of

     *                           this activity will be added

     * @return This TaskStackBuilder for method chaining

     */

    public TaskStackBuilder addParentStack(ComponentName sourceActivityName) {

        final int insertAt = mIntents.size();

        PackageManager pm = mSourceContext.getPackageManager();

        try {

            ActivityInfo info = pm.getActivityInfo(sourceActivityName, 0);

            String parentActivity = info.parentActivityName;

            Intent parent = new Intent().setComponent(

                    new ComponentName(info.packageName, parentActivity));

            while (parent != null) {

                mIntents.add(insertAt, parent);

                info = pm.getActivityInfo(parent.getComponent(), 0);

                parentActivity = info.parentActivityName;

                if (parentActivity != null) {

                    parent = new Intent().setComponent(

                            new ComponentName(info.packageName, parentActivity));

                } else {

                    parent = null;

                }

            }

        } catch (NameNotFoundException e) {

            Log.e(TAG, "Bad ComponentName while traversing activity parent metadata");

            throw new IllegalArgumentException(e);

        }

        return this;

    }



    /**

     * @return the number of intents added so far.

     */