Android ProgressDialog

Example

public class MainActivity extends AppCompatActivity {

private ProgressDialog dialog;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);    
setContentView(R.layout.activity_signin);
dialog = new ProgressDialog(this);    
dialog.setIndeterminate(true);    
dialog.setCancelable(false);    
dialog.setMessage("Loading. Please wait...");

}
@Override
protected void onStart() {
super.onStart();    
dialog.show();
}


@Override
protected void onStop() {
super.onStop();    
dialog.dismiss();
}

}