Android实现微博菜单弹出效果

package com.jerome.weibo; 
import android.animation.Animator; 
import android.animation.Animator.AnimatorListener; 
import android.animation.ObjectAnimator; 
import android.animation.ValueAnimator; 
import android.app.Activity; 
import android.graphics.Bitmap; 
import android.graphics.Canvas; 
import android.graphics.Paint; 
import android.graphics.Rect; 
import android.graphics.drawable.BitmapDrawable; 
import android.os.Handler; 
import android.util.DisplayMetrics; 
import android.util.Log; 
import android.view.Gravity; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.ViewGroup; 
import android.view.animation.Animation; 
import android.view.animation.Animation.AnimationListener; 
import android.view.animation.AnimationSet; 
import android.view.animation.TranslateAnimation; 
import android.widget.ImageView; 
import android.widget.PopupWindow; 
import android.widget.RelativeLayout; 
import android.widget.RelativeLayout.LayoutParams; 
public class MoreWindow extends PopupWindow implements OnClickListener{ 
private String TAG = MoreWindow.class.getSimpleName(); 
Activity mContext; 
private int mWidth; 
private int mHeight; 
private int statusBarHeight ; 
private Bitmap mBitmap= null; 
private Bitmap overlay = null; 
private Handler mHandler = new Handler(); 
public MoreWindow(Activity context) { 
mContext = context; 
} 
public void init() { 
Rect frame = new Rect(); 
mContext.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame); 
statusBarHeight = frame.top; 
DisplayMetrics metrics = new DisplayMetrics(); 
mContext.getWindowManager().getDefaultDisplay() 
.getMetrics(metrics); 
mWidth = metrics.widthPixels; 
mHeight = metrics.heightPixels; 
setWidth(mWidth); 
setHeight(mHeight); 
} 
private Bitmap blur() { 
if (null != overlay) { 
return overlay; 
} 
long startMs = System.currentTimeMillis(); 
View view = mContext.getWindow().getDecorView(); 
view.setDrawingCacheEnabled(true); 
view.buildDrawingCache(true); 
mBitmap = view.getDrawingCache(); 
float scaleFactor = 8;//图片缩放比例； 
float radius = 10;//模糊程度 
int width = mBitmap.getWidth(); 
int height = mBitmap.getHeight(); 
overlay = Bitmap.createBitmap((int) (width / scaleFactor),(int) (height / scaleFactor),Bitmap.Config.ARGB_8888); 
Canvas canvas = new Canvas(overlay); 
canvas.scale(1 / scaleFactor, 1 / scaleFactor); 
Paint paint = new Paint(); 
paint.setFlags(Paint.FILTER_BITMAP_FLAG); 
canvas.drawBitmap(mBitmap, 0, 0, paint); 
overlay = FastBlur.doBlur(overlay, (int) radius, true); 
Log.i(TAG, "blur time is:"+(System.currentTimeMillis() - startMs)); 
return overlay; 
} 
private Animation showAnimation1(final View view,int fromY ,int toY) { 
AnimationSet set = new AnimationSet(true); 
TranslateAnimation go = new TranslateAnimation(0, 0, fromY, toY); 
go.setDuration(300); 
TranslateAnimation go1 = new TranslateAnimation(0, 0, -10, 2); 
go1.setDuration(100); 
go1.setStartOffset(250); 
set.addAnimation(go1); 
set.addAnimation(go); 
set.setAnimationListener(new AnimationListener() { 
@Override 
public void onAnimationEnd(Animation animation) { 
} 
@Override 
public void onAnimationRepeat(Animation animation) { 
} 
@Override 
public void onAnimationStart(Animation animation) { 
} 
}); 
return set; 
} 
public void showMoreWindow(View anchor,int bottomMargin) { 
final RelativeLayout layout = (RelativeLayout)LayoutInflater.from(mContext).inflate(R.layout.center_music_more_window, null); 
setContentView(layout); 
ImageView close= (ImageView)layout.findViewById(R.id.center_music_window_close); 
android.widget.RelativeLayout.LayoutParams params =new android.widget.RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT); 
params.bottomMargin = bottomMargin; 
params.addRule(RelativeLayout.BELOW, R.id.more_window_auto); 
params.addRule(RelativeLayout.RIGHT_OF, R.id.more_window_collect); 
params.topMargin = 200; 
params.leftMargin = 18; 
close.setLayoutParams(params); 
close.setOnClickListener(new OnClickListener() { 
@Override 
public void onClick(View v) { 
if (isShowing()) { 
closeAnimation(layout); 
} 
} 
}); 
showAnimation(layout); 
setBackgroundDrawable(new BitmapDrawable(mContext.getResources(), blur())); 
setOutsideTouchable(true); 
setFocusable(true); 
showAtLocation(anchor, Gravity.BOTTOM, 0, statusBarHeight); 
} 
private void showAnimation(ViewGroup layout){ 
for(int i=0;i<layout.getChildCount();i++){ 
final View child = layout.getChildAt(i); 
if(child.getId() == R.id.center_music_window_close){ 
continue; 
} 
child.setOnClickListener(this); 
child.setVisibility(View.INVISIBLE); 
mHandler.postDelayed(new Runnable() { 
@Override 
public void run() { 
child.setVisibility(View.VISIBLE); 
ValueAnimator fadeAnim = ObjectAnimator.ofFloat(child, "translationY", 600, 0); 
fadeAnim.setDuration(300); 
KickBackAnimator kickAnimator = new KickBackAnimator(); 
kickAnimator.setDuration(150); 
fadeAnim.setEvaluator(kickAnimator); 
fadeAnim.start(); 
} 
}, i * 50); 
} 
} 
private void closeAnimation(ViewGroup layout){ 
for(int i=0;i<layout.getChildCount();i++){ 
final View child = layout.getChildAt(i); 
if(child.getId() == R.id.center_music_window_close){ 
continue; 
} 
child.setOnClickListener(this); 
mHandler.postDelayed(new Runnable() { 
@Override 
public void run() { 
child.setVisibility(View.VISIBLE); 
ValueAnimator fadeAnim = ObjectAnimator.ofFloat(child, "translationY", 0, 600); 
fadeAnim.setDuration(200); 
KickBackAnimator kickAnimator = new KickBackAnimator(); 
kickAnimator.setDuration(100); 
fadeAnim.setEvaluator(kickAnimator); 
fadeAnim.start(); 
fadeAnim.addListener(new AnimatorListener() { 
@Override 
public void onAnimationStart(Animator animation) { 
// TODO Auto-generated method stub 
} 
@Override 
public void onAnimationRepeat(Animator animation) { 
// TODO Auto-generated method stub 
} 
@Override 
public void onAnimationEnd(Animator animation) { 
child.setVisibility(View.INVISIBLE); 
} 
@Override 
public void onAnimationCancel(Animator animation) { 
// TODO Auto-generated method stub 
} 
}); 
} 
}, (layout.getChildCount()-i-1) * 30); 
if(child.getId() == R.id.more_window_local){ 
mHandler.postDelayed(new Runnable() { 
@Override 
public void run() { 
dismiss(); 
} 
}, (layout.getChildCount()-i) * 30 + 80); 
} 
} 
} 
@Override 
public void onClick(View v) { 
switch (v.getId()) { 
case R.id.more_window_local: 
break; 
case R.id.more_window_online: 
break; 
case R.id.more_window_delete: 
break; 
case R.id.more_window_collect: 
break; 
case R.id.more_window_auto: 
break; 
case R.id.more_window_external: 
break; 
default: 
break; 
} 
} 
public void destroy() { 
if (null != overlay) { 
overlay.recycle(); 
overlay = null; 
System.gc(); 
} 
if (null != mBitmap) { 
mBitmap.recycle(); 
mBitmap = null; 
System.gc(); 
} 
} 
} 

package com.jerome.weibo; 
import android.animation.TypeEvaluator; 
public class KickBackAnimator implements TypeEvaluator<Float  { 
private final float s = 1.70158f; 
float mDuration = 0f; 
public void setDuration(float duration) { 
mDuration = duration; 
} 
public Float evaluate(float fraction, Float startValue, Float endValue) { 
float t = mDuration * fraction; 
float b = startValue.floatValue(); 
float c = endValue.floatValue() - startValue.floatValue(); 
float d = mDuration; 
float result = calculate(t, b, c, d); 
return result; 
} 
public Float calculate(float t, float b, float c, float d) { 
return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b; 
} 
}