/** * 使用DialogFragment創建對話框 * @description： * @author ldm * @date 2016-5-12 下午2:00:01 */public class FragmentAlertDialog extends Activity {  private Button button;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.fragment_dialog);    // 初始化Button及設置監聽    button = (Button) findViewById(R.id.show);    button.setOnClickListener(new OnClickListener() {      public void onClick(View v) {        // 彈出對話框        showDialog();      }    });  }  void showDialog() {    // DialogFragment 創建對話框    DialogFragment newFragment = MyAlertDialogFragment        .newInstance(R.string.alert_dialog_two_buttons_title);    newFragment.show(getFragmentManager(), "dialog");  }  public void doPositiveClick() {    Log.i("FragmentAlertDialog", "Positive click!");  }  public void doNegativeClick() {    Log.i("FragmentAlertDialog", "Negative click!");  }  /**   * 自定義彈出對話框DialogFragmet   *   * @description：   * @author ldm   * @date 2016-5-12 下午1:54:31   */  public static class MyAlertDialogFragment extends DialogFragment {    public static MyAlertDialogFragment newInstance(int title) {      MyAlertDialogFragment frag = new MyAlertDialogFragment();      Bundle args = new Bundle();      args.putInt("title", title);      frag.setArguments(args);      return frag;    }    /**     * DialogFragment需要實現onCreateView或者onCreateDIalog方法。     * onCreateView():使用定義的xml布局文件展示Dialog。     * onCreateDialog():利用AlertDialog或者Dialog創建出Dialog。     */    @Override    public Dialog onCreateDialog(Bundle savedInstanceState) {      int title = getArguments().getInt("title");      return new AlertDialog.Builder(getActivity())//創建一個Dialog     .setIcon(R.drawable.alert_dialog_icon)//設置圖標     .setTitle(title)//設置標題     .setPositiveButton(R.string.alert_dialog_ok,       new DialogInterface.OnClickListener() {//確認（OK）按鈕        public void onClick(DialogInterface dialog,          int whichButton) {         ((FragmentAlertDialog) getActivity())           .doPositiveClick();        }       })     .setNegativeButton(R.string.alert_dialog_cancel,//取消（Cancel）按鈕       new DialogInterface.OnClickListener() {        public void onClick(DialogInterface dialog,          int whichButton) {         ((FragmentAlertDialog) getActivity())           .doNegativeClick();        }       }).create();    }  }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:gravity="center_horizontal"  android:orientation="vertical"  android:padding="4dip" >  <TextView    android:id="@+id/text"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_gravity="center_vertical|center_horizontal"    android:layout_weight="1"    android:gravity="top|center_horizontal"    android:text="Example of displaying an alert dialog with a DialogFragment"    android:textAppearance="?android:attr/textAppearanceMedium" />  <Button    android:id="@+id/show"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_weight="0"    android:text="@string/show" >  </Button></LinearLayout>