android - 除了使用 Intent 启动 FragmentActivity 之外，还有其他方法可以调用 FragmentActivity 中的方法吗？

Question

除了使用 Intents 启动方法外，还有其他方法可以调用 FragmentActivity 中的方法吗？有人可以帮忙吗？

代码如下:

    class MainActiviy extends Activiy{
   //some code
   //here i need to show a dialog
 }


class MyDialog extends DialogFragment {

int mNum = 0;
static MyDialog newInstance(){
    return new MyDialog();
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    //dialog view
    Log.i("MyDialog", "onCreateview");
    View v = inflater.inflate(R.layout.dialog, container, false);
    TextView v1 = (TextView) v.findViewById(R.id.text);
    v1.setText("dialog shown");
    return v;
}

}


public class DialogActivity extends FragmentActivity{

DialogFragment dialogfragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);


}
void show(){
    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    Fragment f = getSupportFragmentManager().findFragmentByTag("dialog");

    if(f != null){
        ft.remove(f);
    }

    dialogfragment = MyDialog.newInstance();

    dialogfragment.setCancelable(false);
    dialogfragment.show(ft, "dialog");
    dialogfragment.setStyle(DialogFragment.STYLE_NO_TITLE, android.R.style.Theme_Holo_Light_Dialog);

}
}

Is there any other way to call the show() method in DialogActivity from another Activity class??

Answer 1

为了显示一个对话框，你应该遵循the official guide由谷歌发布。