package gq.cyuubi.lightswitch; import android.Manifest; import android.content.pm.PackageManager; import android.os.Bundle; import android.widget.TextView; import androidx.appcompat.app.AppCompatActivity; import androidx.core.app.ActivityCompat; import androidx.core.content.ContextCompat; public class MainActivity extends AppCompatActivity { static { System.loadLibrary("lightswitch"); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1); } // Example of a call to a native method TextView tv = findViewById(R.id.sample_text); tv.setText(stringFromJNI()); } public native String stringFromJNI(); }