DialogFragment的使用

• Activity向Dialog传递数据

 

public static MyDialogFragment newInstance(int num) {

        MyDialogFragment fragment = new MyDialogFragment();

        // Supply num input as an argument.

        Bundle args = new Bundle();

        args.putInt(“num”, num);

        fragment.setArguments(args);

        return fragment;

    }

 

@Override

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    mNum = getArguments().getInt(“num”);

}

• Dialog向Activity传参

//利用接口传参,在DialogFragment中定义接口

public interface DialogListener {

  void onComplete(String result);

}

 

//Activity实现该接口

public class MyActivity extends Activity implements DialogListener {

// …

   @Override

   public void onComplete(String result){

     //使用参数

   }

}

 

//在DialogFragment中传参数

DialogListener listener=(DialogListener)getActivity();

listener.onComplete(result); //传参数

• 设置属性：宽高、背景、位置等

   在xml中设置和onCreateView(), onViewCreated()中设置无效. 在onStart()和onResume()中设置才有效.    

    @Override

    public void onStart() {

        super.onStart();

        Dialog dialog = getDialog();

        if (dialog != null) {

            getDialog().getWindow().setBackgroundDrawableResource(android.R.color.transparent);

            dialog.getWindow().setLayout(AutoUtils.getPercentWidthSize(1024), AutoUtils.getPercentHeightSize(684));

            dialog.getWindow().setGravity(Gravity.CENTER);

        }

    }

 

• 设置背景Activity的明暗度

// 0-1 , 1表示完全昏暗

getDialog().getWindow().setDimAmount(0.8f);

• 去除标题栏

@Override

public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

     getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE); //去除标题栏

     return inflater.inflate(R.layout.dialog, container, false);

}

• 设置点击外部/返回键不消失

getDialog.setCancelable(false);

getDialog.setCanceledOnTouchOutside(false);

 

getDialog().setOnKeyListener(new DialogInterface.OnKeyListener() {

            @Override

            public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {

                if (keyCode == KeyEvent.KEYCODE_BACK) {

                    return true;

                }

                return false;

            }

        });

• Enter和Exit动画 (飞入飞出)

//在style.xml中引入自定义动画

 

 

//在Java代码中设置窗口动画

getDialog().getWindow().getAttributes().windowAnimations = R.style.CustomDialog;

 

//popwin_show_anim.xml代码

<translate

     android:duration=”300″

     android:fromYDelta=”100%p”

     android:toYDelta=”0″ />

<alpha

    android:duration=”300″

    android:fromAlpha=”0.0″

    android:toAlpha=”1.0″ />

 

//popwin_hide_anim.xml代码

 

<translate

    android:duration=”300″

    android:fromYDelta=”0″

    android:toYDelta=”50%p”/>

<alpha

    android:duration=”300″

    android:fromAlpha=”1.0″

    android:toAlpha=”0.8″/>