Launch the other app

Reference:

https://blog.csdn.net/shaw1994/article/details/39642473
https://dotblogs.com.tw/neil/2011/08/12/33058/

Code snippet:

public void switchToApp(String packageName) {

    Intent appIntent = getPackageManager().getLaunchIntentForPackage(packageName);

    if(appIntent != null){

        startActivity(appIntent);

    }

}