Android实现水波纹扩散效果的实例代码

xmlns:app="http://schemas.android.com/apk/res-auto"<com.army.rippleimage.RippleImageView android:id="@+id/rippleImageView" android:layout_width="match_parent" android:layout_height="180dp" android:background="#37B158" app:show_spacing_time="800"//动画播放间隔时间 app:imageViewWidth="35dp"//图片的大小 app:imageViewHeigth="35dp" android:layout_centerHorizontal="true"></com.army.rippleimage.RippleImageView>

rippleImageView=(RippleImageView)findViewById(R.id.rippleImageView);//开始动画rippleImageView.startWaveAnimation();//停止动画rippleImageView.stopWaveAnimation();

/** * Description : * Author : liujun * Email : liujin2son@163.com */public class RippleImageView extends RelativeLayout { private static final int SHOW_SPACING_TIME=700; private static final int MSG_WAVE2_ANIMATION = 1; private static final int MSG_WAVE3_ANIMATION = 2; private static final int IMAMGEVIEW_SIZE = 80; /**三张波纹图片*/ private static final int SIZE =3 ; /**动画默认循环播放时间*/ private int show_spacing_time=SHOW_SPACING_TIME; /**初始化动画集*/ private AnimationSet [] mAnimationSet=new AnimationSet[SIZE]; /**水波纹图片*/ private ImageView [] imgs=new ImageView[SIZE]; /**背景图片*/ private ImageView img_bg; /**水波纹和背景图片的大小*/ private float imageViewWidth=IMAMGEVIEW_SIZE; private float imageViewHeigth=IMAMGEVIEW_SIZE; private Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case MSG_WAVE2_ANIMATION:  imgs[MSG_WAVE2_ANIMATION].startAnimation(mAnimationSet[MSG_WAVE2_ANIMATION]);  break; case MSG_WAVE3_ANIMATION:  imgs[MSG_WAVE2_ANIMATION].startAnimation(mAnimationSet[MSG_WAVE3_ANIMATION]);  break; } } }; public RippleImageView(Context context) { super(context); initView(context); } public RippleImageView(Context context, AttributeSet attrs) { super(context, attrs); getAttributeSet(context,attrs); initView(context); } /** * 获取xml属性 * @param context * @param attrs */ private void getAttributeSet(Context context, AttributeSet attrs) { TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.custume_ripple_imageview); show_spacing_time = typedArray.getInt(R.styleable.custume_ripple_imageview_show_spacing_time, SHOW_SPACING_TIME); imageViewWidth = typedArray.getDimension(R.styleable.custume_ripple_imageview_imageViewWidth, IMAMGEVIEW_SIZE); imageViewHeigth = typedArray.getDimension(R.styleable.custume_ripple_imageview_imageViewHeigth, IMAMGEVIEW_SIZE); Log.d("TAG","show_spacing_time="+show_spacing_time+"mm imageViewWidth="+imageViewWidth+"px imageViewHeigth="+imageViewHeigth+"px"); typedArray.recycle(); } private void initView(Context context) { setLayout(context); for (int i = 0; i <imgs.length ; i++) { mAnimationSet[i]=initAnimationSet(); } } /** * 开始动态布局 */ private void setLayout(Context context) { LayoutParams params=new LayoutParams(dip2px(context,imageViewWidth),dip2px(context,imageViewHeigth)); //添加一个规则 params.addRule(RelativeLayout.CENTER_IN_PARENT,RelativeLayout.TRUE); /**添加水波纹图片*/ for (int i = 0; i <SIZE ; i++) { imgs[i] = new ImageView(context); imgs[i].setImageResource(R.mipmap.point_empty); addView(imgs[i],params); } LayoutParams params_bg=new LayoutParams(dip2px(context,imageViewWidth)+10,dip2px(context,imageViewHeigth)+10); //添加一个规则 params_bg.addRule(RelativeLayout.CENTER_IN_PARENT,RelativeLayout.TRUE); /**添加背景图片*/ img_bg=new ImageView(context); img_bg.setImageResource(R.mipmap.point_org); addView(img_bg,params_bg); } /** * 初始化动画集 * @return */ private AnimationSet initAnimationSet() { AnimationSet as = new AnimationSet(true); //缩放度：变大两倍 ScaleAnimation sa = new ScaleAnimation(1f, 2f, 1f, 2f, ScaleAnimation.RELATIVE_TO_SELF, 0.5f, ScaleAnimation.RELATIVE_TO_SELF, 0.5f); sa.setDuration(show_spacing_time * 3); sa.setRepeatCount(Animation.INFINITE);// 设置循环 //透明度 AlphaAnimation aa = new AlphaAnimation(1, 0.1f); aa.setDuration(show_spacing_time * 3); aa.setRepeatCount(Animation.INFINITE);//设置循环 as.addAnimation(sa); as.addAnimation(aa); return as; } private static int dip2px(Context context, float dipValue) { final float scale = context.getResources().getDisplayMetrics().density; return (int) (dipValue * scale + 0.5f); } //============================对外暴露的public方法========================================= /** * 开始水波纹动画 */ public void startWaveAnimation() { imgs[0].startAnimation(mAnimationSet[0]); mHandler.sendEmptyMessageDelayed(MSG_WAVE2_ANIMATION, show_spacing_time); mHandler.sendEmptyMessageDelayed(MSG_WAVE3_ANIMATION, show_spacing_time * 2); } /** * 停止水波纹动画 */ public void stopWaveAnimation() { for (int i = 0; i <imgs.length ; i++) { imgs[i].clearAnimation(); } } /**获取播放的速度*/ public int getShow_spacing_time() { return show_spacing_time; } /**设计播放的速度，默认是800毫秒*/ public void setShow_spacing_time(int show_spacing_time) { this.show_spacing_time = show_spacing_time; }}

<declare-styleable name="custume_ripple_imageview"> <attr name="show_spacing_time" format="integer"></attr> <attr name="imageViewWidth" format="dimension"></attr> <attr name="imageViewHeigth" format="dimension"></attr></declare-styleable>