Android 底部滑上滑下动画的Dialog及它的WindowManager.LayoutParams设置

来源：互联网发布：自己动手装修diy软件编辑：程序博客网时间：2024/06/07 12:50

/**    * @Description:  * @author stone * @email  aa86799@163.com */public class  MyDialog extends Dialog {private Animation mShowAnim;private Animation mHideAnim;private View mMainLayout;/** * @param context */public  MyDialog(Context context) {super(context);createShowAnim();createHideAnim();//mMainLayout = ...}@Overrideprotected void onCreate(Bundle savedInstanceState) {setContentView(mMainLayout);}private void createShowAnim() {mShowAnim = new TranslateAnimation(1, 0, 1, 0, 1, 1, 1, 0);mShowAnim.setDuration(500);}private void createHideAnim() {mHideAnim = new TranslateAnimation(1, 0, 1, 0, 1, 0, 1, 1);mHideAnim.setDuration(500);}@Overridepublic void show() {super.show();mMainLayout.startAnimation(mShowAnim);}private void dismissDialog() {super.dismiss();}@Overridepublic void dismiss() {mHideAnim.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) {}@Overridepublic void onAnimationRepeat(Animation animation) {}@Overridepublic void onAnimationEnd(Animation animation) {dismissDialog();}});mMainLayout.startAnimation(mHideAnim);}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_MENU) {dismiss();}return super.onKeyDown(keyCode, event);}}

MyDialog myDialog = new MyDialog(context);WindowManager.LayoutParams params = myDialog.getWindow().getAttributes();params.alpha = 0.8f; //窗口透明度params.width =  mScreenWidth - 80;params.height =  mScreenHeight / 4;params.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;myDialog.getWindow().setAttributes(params);//必须设置一个背景，否则会有系统的Dialog样式：外部白框myDialog.getWindow().setBackgroundDrawableResource(R.drawable.translate);

设置的背景必须是Drawable对象或Drawable资源的id。

res/drawable/translate.xml

<?xml version="1.0" encoding="utf-8"?><color xmlns:android="http://schemas.android.com/apk/res/android"     android:color="#00000000"></color>

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刚一哥们跟我说，网上流行的是这样的实现方法：

mWindow.setWindowAnimations(R.style.dialog); //添加动画

res/values/styles.xml

<style name="dialog" parent="android:Animation">        <item name="@android:windowEnterAnimation">@anim/dialog_enter</item>      <item name="@android:windowExitAnimation">@anim/dialog_exit</item>  </style>

dialog_enter.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >    <translate        android:duration="500"        android:fromYDelta="100%p" /></set>

dialog_exit.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >    <translate        android:duration="500"        android:toYDelta="100%p" /></set>

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