Restore application when receiving broadcast

Question

I have an application A that has a broadcast receiver. This receiver listens to certain broadcasts I get from another application B.

Now when I receive a certain broadcast from application BI want to open my application A.
At the moment I have the following code in my broadcast receiver in application A:

    @Override
    public void onReceive(Context context, Intent intent) {
     if(intent.getAction().equals("startApplication"))
        {
            Intent LaunchIntent = mContext.getPackageManager().getLaunchIntentForPackage("packageName application A");
            context.startActivity(LaunchIntent);
        }
    }

But this code always starts the main activity of application A.
When my application is already open in the background I want to restore the application rather than starting from the main activity.

Like when you press home in an application and return to it with recent apps.

Thanks!

Answer 1

在activity级别使您的主要活动成为应用manifest中的singleInstance