call(null, "mjava", "a.a")
//以下代码放在a.mjava内
import android.net.*;
import android.content.*;
public a(){
    Intent intent = new Intent();
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
    intent.setData(Uri.fromParts("package", activity.getPackageName(), null));
    activity.startActivity(intent);
}
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