Android实现微博菜单弹出效果
先上Android仿微博菜单弹出效果图,这个截图不是很流畅,大家可以下载apk试一下。
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说一下实现思路:
1、截取当前窗口,对图片做高斯模糊处理,将处理后的图片做popupwindow的背景图片;
2、创建popupwindow,完成布局,这儿要注意:View的移动范围是由parent的大小决定的,就是只能在parent的范围内移动;
3、给买个View添加进入动画,每个比前一个延期50ms播放动画,关闭窗口时相反;
4、为View的动画添加回弹插值器;
MoreWindow.java窗口
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;iKickBackAnimator.Java回弹效果:
package com.jerome.weibo; import android.animation.TypeEvaluator; public class KickBackAnimator implements TypeEvaluator{ 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; } }
代码见github: https://github.com/gqdy365/WeiboPopupWindow
请大家star一下,我后面会持续更新;
下面是apk下载地址:WeiboPopupWindow
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持创新互联。
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