android之动画popowindows

废话不多说，先看效果图：

这是主Activity代码：

 public class RollActivity extends Activity {  
  private View view;  
  private Button btn;  
  private PopupWindow mPopupWindow;  
  private View[] btns;  
  /** Called when the activity is first created. */ 
  @Override 
  public void onCreate(Bundle savedInstanceState) {  
  super.onCreate(savedInstanceState);  
         setContentView(R.layout.main);  
 //      LinearLayout layout=(LinearLayout) view.findViewById(R.id.layout_main); 
 //      //设置背景图片旋转180 
 //      Bitmap mBitmap=setRotate(R.drawable.bg_kuang); 
 //      BitmapDrawable drawable=new BitmapDrawable(mBitmap); 
 //      layout.setBackgroundDrawable(drawable); 
  
         btn=(Button) this.findViewById(R.id.btn);  
         btn.setOnClickListener(new OnClickListener(){  
  
  @Override 
  public void onClick(View v) {  
  // TODO Auto-generated method stub 
                 showPopupWindow(btn);  
             }  
  
         });  
  
         initPopupWindow(R.layout.popwindow);  
  
     }  
  
  private void initPopupWindow(int resId){  
         LayoutInflater mLayoutInflater = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);  
         view = mLayoutInflater.inflate(resId, null);  
  
         mPopupWindow = new PopupWindow(view, 400,LayoutParams.WRAP_CONTENT);  
 //      mPopupWindow.setBackgroundDrawable(new BitmapDrawable());//必须设置background才能消失 
         mPopupWindow.setBackgroundDrawable(getResources().getDrawable(R.drawable.bg_frame));  
         mPopupWindow.setOutsideTouchable(true);  
  
  //自定义动画 
 //      mPopupWindow.setAnimationStyle(R.style.PopupAnimation); 
  //使用系统动画 
         mPopupWindow.setAnimationStyle(android.R.style.Animation_Dialog);  
         mPopupWindow.update();  
         mPopupWindow.setTouchable(true);  
         mPopupWindow.setFocusable(true);  
  
         btns=new View[3];  
         btns[0]=view.findViewById(R.id.btn_0);  
         btns[1]=view.findViewById(R.id.btn_1);  
         btns[2]=view.findViewById(R.id.btn_2);  
         btns[0].setOnClickListener(new OnClickListener() {  
  
  @Override 
  public void onClick(View v) {  
  // TODO Auto-generated method stub 
  //doSomething 
             }  
         });  
         btns[1].setOnClickListener(new OnClickListener() {  
  
  @Override 
  public void onClick(View v) {  
  // TODO Auto-generated method stub 
  //doSomething 
             }  
         });  
         btns[2].setOnClickListener(new OnClickListener() {  
  
  @Override 
  public void onClick(View v) {  
  // TODO Auto-generated method stub 
  //doSomething 
             }  
         });  
     }  
  private void showPopupWindow(View view) {  
  if(!mPopupWindow.isShowing()){  
 //          mPopupWindow.showAsDropDown(view,0,0); 
             mPopupWindow.showAtLocation(view, Gravity.CENTER, 0, 0);  
         }  
     }  
  public Bitmap setRotate(int resId) {  
         Matrix mFgMatrix = new Matrix();  
         Bitmap mFgBitmap = BitmapFactory.decodeResource(getResources(), resId);  
         mFgMatrix.setRotate(180f);  
  return mFgBitmap=Bitmap.createBitmap(mFgBitmap, 0, 0,   
                 mFgBitmap.getWidth(), mFgBitmap.getHeight(), mFgMatrix, true);  
     }  
 }  

PopupWindow的布局popwindow.xml  注意3个LinearLayout里必须设置clickable和background，这样当点击上去的时候才会有点击效果。  android:clickable="true"  android:background="@drawable/state_btn_pressed"

 <?xml version="1.0" encoding="utf-8"?> 
  <LinearLayout 
  xmlns:android="http://schemas.android.com/apk/res/android" 
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:orientation="horizontal" 
  android:id="@+id/layout_main" 
  > 
  <LinearLayout android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:orientation="vertical" 
  android:gravity="center_horizontal" 
  android:clickable="true" 
  android:background="@drawable/state_btn_pressed" 
  android:layout_weight="1" 
  android:id="@+id/btn_0" 
  > 
  <ImageView android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:scaleType="fitCenter" 
  android:src="@drawable/ic_call" 
  > 
  </ImageView> 
  <TextView android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:textColor="#000000" 
  android:textSize="18px" 
  android:text="电话"> 
  </TextView> 
  </LinearLayout> 
  <LinearLayout android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:orientation="vertical" 
  android:gravity="center_horizontal" 
  android:clickable="true" 
  android:background="@drawable/state_btn_pressed" 
  android:layout_weight="1" 
  android:id="@+id/btn_1" 
  > 
  <ImageView android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:scaleType="fitCenter" 
  android:src="@drawable/ic_home" 
  > 
  </ImageView> 
  <TextView android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:textColor="#000" 
  android:textSize="18px" 
  android:text="空间"> 
  </TextView> 
  </LinearLayout> 
  
  <LinearLayout android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:orientation="vertical" 
  android:gravity="center_horizontal" 
  android:clickable="true" 
  android:background="@drawable/state_btn_pressed" 
  android:layout_weight="1" 
  android:id="@+id/btn_2" 
  > 
  <ImageView android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:scaleType="fitCenter" 
  android:src="@drawable/ic_sms" 
  > 
  </ImageView> 
  <TextView android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:textColor="#000" 
  android:textSize="18px" 
  android:text="短信" 
  > 
  </TextView> 
  </LinearLayout> 
 </LinearLayout> 

state_btn_pressed.xml，点击的效果： 

 <?xml version="1.0" encoding="utf-8"?> 
 <selector xmlns:android="http://schemas.android.com/apk/res/android"> 
  <item android:state_pressed="true" 
  android:drawable="@drawable/bg_btn_pressed" 
  android:padding="0dp"/> 
 </selector> 

Android 模仿迅雷的 PopupWindow 出现/消失动画 出现：

 <?xml version="1.0" encoding="utf-8"?> 
 <set xmlns:android="http://schemas.android.com/apk/res/android"> 
  <scale android:fromXScale="0.6" android:toXScale="1.1" 
  android:fromYScale="0.6" android:toYScale="1.1" android:pivotX="50%" 
  android:pivotY="50%" android:duration="200" /> 
  <scale android:fromXScale="1.0" android:toXScale="0.91" 
  android:fromYScale="1.0" android:toYScale="0.91" android:pivotX="50%" 
  android:pivotY="50%" android:duration="400" android:delay="200" /> 
  <alpha android:interpolator="@android:anim/linear_interpolator" 
  android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="400" /> 
 </set> 

消失： 

 <?xml version="1.0" encoding="utf-8"?> 
 <set xmlns:android="http://schemas.android.com/apk/res/android"> 
  <scale android:fromXScale="1.0" android:toXScale="1.25" 
  android:fromYScale="1.0" android:toYScale="1.25" android:pivotX="50%" 
  android:pivotY="50%" android:duration="200" /> 
  <scale android:fromXScale="1.0" android:toXScale="0.48" 
  android:fromYScale="1.0" android:toYScale="0.48" android:pivotX="50%" 
  android:pivotY="50%" android:duration="400" android:delay="200" /> 
  <alpha android:interpolator="@android:anim/linear_interpolator" 
  android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="400" /> 
 </set> 

最后用下面的 XML 封装：

 <?xml version="1.0" encoding="utf-8"?> 
 <resources> 
  <style name="PopupAnimation" parent="android:Animation" 
  mce_bogus="1"> 
  <item name="android:windowEnterAnimation">@anim/anim_dialog_show</item> 
  <item name="android:windowExitAnimation">@anim/anim_dialog_hide</item> 
  </style> 
 </resources>