inside Android Dialog, how to setup onActivityResult for startActivityForResult?

问题

From an activity, I can easily setup the onActivityResult() and call startActivityForResult() and everything works fine.

Now, I need to call startActivityForResult() from the Dialog. But I can't setup the onActivityResult(), I believe Dialog is not an Activity.

How do I get the result?

I try something like this inside a dialog but it failed.

//create new Intent
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, m_PicUri);
((Activity) getContext()).startActivityForResult(intent, Const.TAKE_PIC_ACTIVITY_RET_CODE);

回答1:

You can declare your Activity to have a Dialog theme. Look into this SO question: Android Activity as a dialog

You would change this in your AndroidManifest.xml file:

<activity android:theme="@android:style/Theme.Dialog" />

You should be able to use startActivityForResult() like normal. I know the BluetoothChat example Android program uses something similar to return the Bluetooth device that you choose from a Dialog list.

回答2:

if your dialog is a dialog fragment you can use

getActivity().startActivityForResult(intent);

in this way the result is sent to the activity that created the dialog

回答3:

You can use DialogFragment instead of Dialog. Because The dialog is secondary to its activity. When you start the activity with startActivityForResult(), your dialog gets dismissed

Another Example Use Callback

Create Interface

 public interface DialogCallback {
   void getResults(String results);
 }

Create DialogFragment

public class DialogFragment extends DialogFragment {

DialogCallback dialogCallback;

public DialogFragment setCallBack(DialogCallback dialogCallback){
    this.dialogCallback = dialogCallback;
    return this;
}

@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    return super.onCreateDialog(savedInstanceState);
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.your_layout, container, false);
    return view;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
}

@Override
public void onDismiss(DialogInterface dialog) {
    super.onDismiss(dialog);
    dialogCallback.getResults("hello");
}

}

In your Activity

@Override
protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     new DialogFragment().setCallBack(dialogCallback).show(getFragmentManager(),"");
}

DialogCallback dialogCallback = new DialogCallback() {
    @Override
    public void getResults(String results) {
        if(results!=null){
            Log.e(TAG,results);
        }
    }
};

Output

When you dismiss the DialogFragment you will see the "hello" Log in your Activity

回答4:

Use the compatibility package then build your dialog using DialogFragment

回答5:

On the dialog constructor pass the reference of parent Activity, then you can use in the dialog like this,

parentActivity.startActivityForResult(intent, CODE);

来源：https://stackoverflow.com/questions/7211971/inside-android-dialog-how-to-setup-onactivityresult-for-startactivityforresult

标签

android

android-activity

android-dialog