Ensuring that we retry if the callback for animation started comes before the...

package com.android.systemui.recents;

import android.app.Activity;

import android.app.ActivityManager;

import android.app.ActivityOptions;

import android.appwidget.AppWidgetProviderInfo;

import android.content.ActivityNotFoundException;

import android.content.BroadcastReceiver;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

    public void onAnimationStarted() {

        // Notify recents to start the enter animation

        if (!mStartAnimationTriggered) {

            // There can be a race condition between the start animation callback and

            // the start of the new activity (where we register the receiver that listens

            // to this broadcast, so we add our own receiver and if that gets called, then

            // we know the activity has not yet started and we can retry sending the broadcast.

            BroadcastReceiver fallbackReceiver = new BroadcastReceiver() {

                @Override

                public void onReceive(Context context, Intent intent) {

                    if (getResultCode() == Activity.RESULT_OK) {

                        mStartAnimationTriggered = true;

                        return;

                    }

                    // Schedule for the broadcast to be sent again after some time

                    mHandler.postDelayed(new Runnable() {

                        @Override

                        public void run() {

                            onAnimationStarted();

                        }

                    }, 75);

                }

            };

            // Send the broadcast to notify Recents that the animation has started

            Intent intent = new Intent(ACTION_START_ENTER_ANIMATION);

            intent.setPackage(mContext.getPackageName());

            intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);

            mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT);

            mStartAnimationTriggered = true;

            mContext.sendOrderedBroadcastAsUser(intent, UserHandle.CURRENT, null,

                    fallbackReceiver, null, Activity.RESULT_CANCELED, null, null);

        }

    }

}

                ReferenceCountedTrigger t = new ReferenceCountedTrigger(context, null, null, null);

                mRecentsView.startEnterRecentsAnimation(new ViewAnimation.TaskViewEnterContext(t));

                onEnterAnimationTriggered();

                // Notify the fallback receiver that we have successfully got the broadcast

                // See AlternateRecentsComponent.onAnimationStarted()

                setResultCode(Activity.RESULT_OK);

            }

        }

    };