Using DialogFragment - TechGeekD/android_guides GitHub Wiki

import android.support.v4.app.DialogFragment;
// ...

public class EditNameDialog extends DialogFragment {

	private EditText mEditText;

	public EditNameDialog() {
		// Empty constructor is required for DialogFragment
                // Make sure not to add arguments to the constructor
                // Use `newInstance` instead as shown below
	}
	
	public static EditNameDialog newInstance(String title) {
		EditNameDialog frag = new EditNameDialog();
		Bundle args = new Bundle();
		args.putString("title", title);
		frag.setArguments(args);
		return frag;
	}

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

	@Override
	public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
		super.onViewCreated(view, savedInstanceState);
		// Get field from view
		mEditText = (EditText) view.findViewById(R.id.txt_your_name);
		// Fetch arguments from bundle and set title
		String title = getArguments().getString("title", "Enter Name");
		getDialog().setTitle(title);
		// Show soft keyboard automatically and request focus to field
		mEditText.requestFocus();
		getDialog().getWindow().setSoftInputMode(
		    WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
	}
}

// Note: `FragmentActivity` works here as well
public class DialogDemoActivity extends AppCompatActivity {
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      showEditDialog();
  }
  
  private void showEditDialog() {
      FragmentManager fm = getSupportFragmentManager();
      EditNameDialog editNameDialog = EditNameDialog.newInstance("Some Title");
      editNameDialog.show(fm, "fragment_edit_name");
  }
}

class MyAlertDialogFragment extends DialogFragment {
    public MyAlertDialogFragment() {
          // Empty constructor required for DialogFragment
    }
    
    public static MyAlertDialogFragment newInstance(String title) {
        MyAlertDialogFragment frag = new MyAlertDialogFragment();
    	Bundle args = new Bundle();
    	args.putString("title", title);
    	frag.setArguments(args);
    	return frag;
    }
    
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        String title = getArguments().getString("title");
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity());
        alertDialogBuilder.setTitle(title);
        alertDialogBuilder.setMessage("Are you sure?");
        alertDialogBuilder.setPositiveButton("OK",  new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // on success
            }
        });
        alertDialogBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });

        return alertDialogBuilder.create();
    }
}

public class DialogDemoActivity extends AppCompatActivity {
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      showAlertDialog();
  }

  private void showAlertDialog() {
      FragmentManager fm = getSupportFragmentManager();
      MyAlertDialogFragment alertDialog = MyAlertDialogFragment.newInstance("Some title");
      alertDialog.show(fm, "fragment_alert");
  }
}

public class EditNameDialog extends DialogFragment implements OnEditorActionListener {
    private EditText mEditText;

    // 1. Defines the listener interface with a method passing back data result.
    public interface EditNameDialogListener {
        void onFinishEditDialog(String inputText);
    }
	
    // ...
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
        // ...
        // 2. Setup a callback when the "Done" button is pressed on keyboard
        mEditText.setOnEditorActionListener(this);
    }
	
    // Fires whenever the textfield has an action performed
    // In this case, when the "Done" button is pressed
    // REQUIRES a 'soft keyboard' (virtual keyboard)
    @Override
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        if (EditorInfo.IME_ACTION_DONE == actionId) {
            // Return input text back to activity through the implemented listener
            EditNameDialogListener listener = (EditNameDialogListener) getActivity();
            listener.onFinishEditDialog(mEditText.getText().toString());
            // Close the dialog and return back to the parent activity
            dismiss();
            return true;
        }
        return false;
    }
}

public class DialogDemoActivity extends AppCompatActivity implements EditNameDialogListener {
  // ...
  
  // 3. This method is invoked in the activity when the listener is triggered
  // Access the data result passed to the activity here
  @Override
  public void onFinishEditDialog(String inputText) {
  	Toast.makeText(this, "Hi, " + inputText, Toast.LENGTH_SHORT).show();
  }
}

import android.support.v4.app.DialogFragment;

public class EditNameDialog extends DialogFragment {
    // Defines the listener interface
    public interface EditNameDialogListener {
        void onFinishEditDialog(String inputText);
    }

    // Call this method to send the data back to the parent fragment
    public void sendBackResult() {
      // Notice the use of `getTargetFragment` which will be set when the dialog is displayed
      EditNameDialogListener listener = (EditNameDialogListener) getTargetFragment();
      listener.onFinishEditDialog(mEditText.getText().toString());
      dismiss();
    }
}

import android.support.v4.app.Fragment;

public class MyParentFragment extends Fragment implements EditNameDialogListener {
    // Call this method to launch the edit dialog
    private void showEditDialog() {
        FragmentManager fm = getSupportFragmentManager();
        EditNameDialog editNameDialog = EditNameDialog.newInstance("Some Title");
        // SETS the target fragment for use later when sending results
        editNameDialog.setTargetFragment(MyParentFragment.this, 300);
        editNameDialog.show(fm, "fragment_edit_name");
    }

    // This is called when the dialog is completed and the results have been passed
    @Override
    public void onFinishEditDialog(String inputText) {
        Toast.makeText(this, "Hi, " + inputText, Toast.LENGTH_SHORT).show();
    }
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    Dialog dialog = super.onCreateDialog(savedInstanceState);
    // request a window without the title
    dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
    return dialog;
}

public void onResume() {
    int width = getResources().getDimensionPixelSize(R.dimen.popup_width);
    int height = getResources().getDimensionPixelSize(R.dimen.popup_height);        
    getDialog().getWindow().setLayout(width, height);
}

public void onResume() {
    // Store access variables for window and blank point
    Window window = getDialog().getWindow();
    Point size = new Point();
    // Store dimensions of the screen in `size`
    Display display = window.getWindowManager().getDefaultDisplay();
    display.getSize(size);
    // Set the width of the dialog proportional to 75% of the screen width
    window.setLayout((int) (size.x * 0.75), WindowManager.LayoutParams.WRAP_CONTENT);
    window.setGravity(Gravity.CENTER);
}

ProgressDialog pd = new ProgressDialog(context);
pd.setTitle("Loading...");
pd.setMessage("Please wait.");
pd.setCancelable(false);

pd.show();

pd.dismiss();

public class DatePickerFragment extends DialogFragment {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current time as the default values for the picker
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);

        // Activity needs to implement this interface
        DatePickerDialog.OnDateSetListener listener = (DatePickerDialog.OnDateSetListener) getActivity();

        // Create a new instance of TimePickerDialog and return it
        return new DatePickerDialog(getActivity(), listener, year, month, day);
    }

public class MyActivity extends AppCompatActivity implements DatePickerDialog.OnDateSetListener {

  // attach to an onclick handler to show the date picker
  public void showDatePickerDialog(View v) {
     DatePickerFragment newFragment = new DatePickerFragment();
     newFragment.show(getSupportFragmentManager(), "datePicker");
  }

  // handle the date selected
  @Override
  public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
    // store the values selected into a Calendar instance
    final Calendar c = Calendar.getInstance();
    c.set(Calendar.YEAR, year);
    c.set(Calendar.MONTH, monthOfYear);
    c.set(Calendar.DAY_OF_MONTH, dayOfMonth);
  }

public class TimePickerFragment extends DialogFragment {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current time as the default values for the picker
        final Calendar c = Calendar.getInstance();
        int hour = c.get(Calendar.HOUR_OF_DAY);
        int minute = c.get(Calendar.MINUTE);

        // Activity has to implement this interface
        TimePickerDialog.OnTimeSetListener listener = (TimePickerDialog.OnTimeSetListener) getActivity();

        // Create a new instance of TimePickerDialog and return it
        return new TimePickerDialog(getActivity(), listener, hour, minute,
                DateFormat.is24HourFormat(getActivity()));
    }

    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        // Do something with the time chosen by the user
    }
}