Implementation of simulated pressing the home key in Android launcher

Implementation of simulated pressing the home key in Android launcher

Intent mHomeIntent = new Intent(Intent.ACTION_MAIN); 
    (Intent.CATEGORY_HOME); 
    (Intent.FLAG_ACTIVITY_NEW_TASK 
            | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED); 
   getApplicationContext().startActivity(mHomeIntent);   // To usegetApplicationContext

In Android, if you want to moveTaskToFront in the stack, you can define a BroadcastReceiver to receive a certain type of Broadcast and start the Activity in onReceive. However, it should be noted that the context parameter problem in front of startActivity.

The Android activity cannot use startActivity to advance itself to the front of the stack, so the context of the startActivity in this onReceive cannot be an Activity.

In addition, if the BroadcastReceiver is dynamically registered (dynamic register), the parameter of the context passed in onReceive is this activity and cannot be used.

The more effective way to deal with the above problem is not to use this context directly, but use(), so that moveTaskToFront can be implemented.

Corresponding to moveTaskToFront is moveTaskToBack, which is relatively simple. Activity has provided the moveTaskToBack method. It should be noted at that time that once this method is called, the task where the activity is located will be moved to the bottom of the stack as a whole, so special attention needs to be paid.

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