How to call one android application from another android application

by

I think this code will help:

Intent intent = new Intent(Intent.ACTION_RUN);
intent.setComponent(new ComponentName("<packet name>", "<class name>"));
List list = packageManager.queryIntentActivities(intent, packageManager.COMPONENT_ENABLED_STATE_DEFAULT);

if(list.size() > 0)
{
 Log.i("Log", "Have application" + list.size());
 startActivity(intent);
}
else
{
    Log.i("Log", "None application");
}

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