直接上代碼。
public class MyBlurPopWin extends BlurPopupWindow
{
Context mContext;
GridLayout gridLayout;
SpringChain springChain;
Button closeBtn;
public MyBlurPopWin(Context context) {
super(context);
mContext=context;
}
@Override//父類回調，父類創建一個根FrameLayout，這裏用來添加里面的內容。
public void onCreatView(FrameLayout container) {
//初始化很多東西，父類。
super.onCreatView(container);
//這裏必須用三個參數，並且設置成false才能獲得到layoutparams！！！否則獲得到空的。
//當然也可以自己設置layoutparams。
View rootView = LayoutInflater.from(mContext).inflate(R.layout.layout,container,false);
FrameLayout.LayoutParams frameLayout= (FrameLayout.LayoutParams) rootView.getLayoutParams();
frameLayout.gravity=Gravity.BOTTOM;
//rootView.findViewById(R.id.btn).setOnClickListener(this);
//FrameLayout.LayoutParams layoutParams=new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
//layoutParams.gravity=Gravity.BOTTOM;
//rootView.setLayoutParams(layoutParams);
//找到id，view
gridLayout = (GridLayout) rootView.findViewById(R.id.group);
closeBtn= (Button) rootView.findViewById(R.id.btn);
//設置監聽，用來關閉popwin，用到了父類的backpress。
setClickableItems(closeBtn);
//添加到父容器。
container.addView(rootView);
}
@Override//show的時候父類動畫的時候調用此函數，在這裏重寫，實現自己需要的函數
public void onShowAnimStart() {
Log.e("xxx","onShowAnimStart");
super.onShowAnimStart();
springChain =SpringChain.create(50,6,40,7); //faceBook的rebounds
for (int i=0;i<gridLayout.getChildCount();i++){
final View child=gridLayout.getChildAt(i);
springChain.addSpring(new SimpleSpringListener(){
@Override
public void onSpringUpdate(Spring spring) {
super.onSpringUpdate(spring);
double value=spring.getCurrentValue();
child.setTranslationY((float) (value*gridLayout.getMeasuredHeight()));
}
});
}
for(Spring s:springChain.getAllSprings()){
s.setCurrentValue(1);
}
springChain.setControlSpringIndex(1).getControlSpring().setEndValue(0);
}
@Override
public void onClick(View v) {
super.onClick(v);
switch (v.getId()){
case R.id.btn:
onBackpressed();
break;
}
}
@Override
public boolean onBackpressed() {
boolean isDismiss=super.onBackpressed();
if (!isDismiss){
springChain.setControlSpringIndex(1).getControlSpring().setEndValue(1);
}
return isDismiss;
}
}
用到的高斯模糊popwin
public class BlurPopupWindow {
PopupWindow mPopupWindow;
View mRootView;
FrameLayout mContentView;
ImageView mBlurImageView;
Activity mActivity;
private int mDelayAnim=150;
public BlurPopupWindow(Context context) {
mActivity = (Activity) context;
if (mActivity.getParent() != null) {
ViewGroup contentView= (ViewGroup) mActivity.getParent().getWindow().findViewById(Window.ID_ANDROID_CONTENT);
mRootView = (ViewGroup) contentView.getChildAt(0);
mActivity = mActivity.getParent();
}
if(mRootView==null){
ViewGroup contentView= (ViewGroup) mActivity.getWindow().findViewById(Window.ID_ANDROID_CONTENT);
mRootView = (ViewGroup) contentView.getChildAt(0);
}
generateContentView();
BlurKit.init(mActivity.getApplicationContext());
}
public boolean isShowing(){
if (mPopupWindow != null && mPopupWindow.isShowing()) {
return true ;
}
return false;
}
boolean isAnimRuning ;
public boolean onBackpressed(){
if (mPopupWindow == null || !mPopupWindow.isShowing()) {
return true ;
}
if(isAnimRuning){
return true;
}
ValueAnimator valueAnimator = ValueAnimator.ofInt(255,0).setDuration(400);
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
int value = (int) valueAnimator.getAnimatedValue();
mBlurImageView.setImageAlpha(value);
}
});
valueAnimator.setStartDelay(mDelayAnim);
valueAnimator.setInterpolator(new DecelerateInterpolator());
valueAnimator.setRepeatCount(0);
valueAnimator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
}
@Override
public void onAnimationEnd(Animator animation) {
if (mPopupWindow != null && mPopupWindow.isShowing()) {
mPopupWindow.dismiss();
}
isAnimRuning = false;
}
@Override
public void onAnimationCancel(Animator animation) {
isAnimRuning = false;
}
@Override
public void onAnimationRepeat(Animator animation) {
}
});
valueAnimator.start();
isAnimRuning = true;
return false;
}
public void onShowAnimStart(){
}
public void onShowAnimEnd(){
}
public final void dismiss(){
if (mPopupWindow != null && mPopupWindow.isShowing()) {
mPopupWindow.dismiss();
}
isAnimRuning = false;
}
private void generateContentView() {
mContentView = new FrameLayout(mActivity);
mPopupWindow = new PopupWindow(mContentView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
mBlurImageView = new ImageView(mActivity);
mBlurImageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
mContentView.addView(mBlurImageView, params);
mPopupWindow.setContentView(mContentView);
mPopupWindow.setAnimationStyle(0);
// mPopupWindow.setFocusable(true);
// mPopupWindow.setTouchable(true);
mPopupWindow.setOutsideTouchable(false);
mContentView.setFocusableInTouchMode(true);
mContentView.setFocusable(true);
mPopupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
// mContentView.setForeground(new ColorDrawable(Color.BLACK));
mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
mContentView.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_BACK) {
return true;
}
return false;
}
});
}
public void show() {
if(!isViewCreated){
isViewCreated =true;
onCreatView(mContentView);
}
Bitmap bitmap = BlurKit.getInstance().fastBlur(mRootView,10,0.12f);
// Bitmap bitmap = BlurKit.getInstance().fastBlur(mRootView,5,0.5f);
mBlurImageView.setImageBitmap(bitmap);
mBlurImageView.setImageAlpha(0);
mBlurImageView.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
ValueAnimator valueAnimator = ValueAnimator.ofInt(0,255).setDuration(400);
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
int value = (int) valueAnimator.getAnimatedValue();
mBlurImageView.setImageAlpha(value);
}
});
valueAnimator.setInterpolator(new DecelerateInterpolator());
valueAnimator.setRepeatCount(0);
valueAnimator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
onShowAnimStart();
}
@Override
public void onAnimationEnd(Animator animation) {
isAnimRuning= false;
onShowAnimEnd();
}
@Override
public void onAnimationCancel(Animator animation) {
isAnimRuning= false;
}
@Override
public void onAnimationRepeat(Animator animation) {
}
});
valueAnimator.start();
mBlurImageView.getViewTreeObserver().removeOnPreDrawListener(this);
isAnimRuning =true;
return true;
}
});
mPopupWindow.showAtLocation(mRootView, Gravity.CENTER , 0, 0);
}
boolean isViewCreated;
public void onCreatView(FrameLayout container) {
}
@SuppressWarnings("unchecked")
final public <E extends View> E findView(int id) {
try {
return (E)mContentView.findViewById(id);
} catch (ClassCastException e) {
throw e;
}
}
/* Click listener that avoid double click event in short time*/
public NoDoubleClickListener mNoDoubleClickListener = new NoDoubleClickListener(){
@Override
public void onClickInternal(View v) {
BlurPopupWindow.this.onClick(v);
}
};
public interface NoDoubleClickListener{
public void onClickInternal(View v);
}
public void onClick(View v){
}
/*Set all widget that need to implements OnClick() here*/
protected void setClickableItems(View... views) {
if (views != null && views.length > 0) {
for (View v : views) {
if (v != null)
v.setOnClickListener((new View.OnClickListener() {
@Override
public void onClick(View v) {
BlurPopupWindow.this.onClick(v);
}
}));
}
}
}
/*Set all widget that need to implements OnClick() here*/
protected void setClickableItems(int... residGroup) {
if (residGroup != null && residGroup.length > 0) {
for (int resid : residGroup) {
if (resid != 0) {
findView(resid).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
BlurPopupWindow.this.onClick(v);
}
});
}
}
}
}
}blurPopupwindow用到的工具
public class BlurKit {
private static BlurKit instance;
private RenderScript rs;
public static void init(Context context) {
if (instance != null) {
return;
}
instance = new BlurKit();
instance.rs = RenderScript.create(context);
}
public Bitmap blur(Bitmap src, int radius) {
final Allocation input = Allocation.createFromBitmap(rs, src);
final Allocation output = Allocation.createTyped(rs, input.getType());
final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
script.setRadius(radius);
script.setInput(input);
script.forEach(output);
output.copyTo(src);
return src;
}
public Bitmap blur(View src, int radius) {
Bitmap bitmap = getBitmapForView(src, 1f);
return blur(bitmap, radius);
}
public Bitmap fastBlur(View src, int radius, float downscaleFactor) {
Bitmap bitmap = getBitmapForView(src, downscaleFactor);
return blur(bitmap, radius);
}
private Bitmap getBitmapForView(View src, float downscaleFactor) {
Bitmap bitmap = Bitmap.createBitmap(
(int) (src.getWidth() * downscaleFactor),
(int) (src.getHeight() * downscaleFactor),
Bitmap.Config.ARGB_4444
);
Canvas canvas = new Canvas(bitmap);
Matrix matrix = new Matrix();
matrix.preScale(downscaleFactor, downscaleFactor);
canvas.setMatrix(matrix);
src.draw(canvas);
return bitmap;
}
public static BlurKit getInstance() {
if (instance == null) {
throw new RuntimeException("BlurKit not initialized!");
}
return instance;
}
}