Android 按钮按下释放水纹实现

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Android 按钮按下水纹。
import android.content.Context;import android.os.Message;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.view.animation.AlphaAnimation;import android.view.animation.Animation;import android.view.animation.AnimationSet;import android.view.animation.DecelerateInterpolator;import android.view.animation.ScaleAnimation;import android.widget.ImageView;import java.util.Iterator;import java.util.Map;import java.util.concurrent.ConcurrentHashMap;public class ButtonTouchCircleAnimView extends ViewGroup {    private static final int HANDLER_START_UP_ANIM = 0;    private static final int HANDLER_UP_ANIM_END = 1;    private Context mContext;    private ConcurrentHashMap<Integer, CircleView> mCircleViewMap;    private int mCircleRadius;    private WeakRefHandler mHandler;    public ButtonTouchCircleAnimView(Context context) {        this(context, null);    }    public ButtonTouchCircleAnimView(Context context, AttributeSet attrs) {        super(context, attrs);        mContext = context;        mCircleViewMap = new ConcurrentHashMap<>();        mCircleRadius = (int) (mContext.getResources().getDimension(R.dimen.bottom_menu_bar_height) + DensityUtils.dip2px(mContext, 12)) / 2;        mHandler = new WeakRefHandler(mContext) {            @Override            public void handleMessage(Message msg) {                CircleView circleView = null;                switch (msg.what) {                    case HANDLER_START_UP_ANIM:                        int id = (int) msg.obj;                        circleView = mCircleViewMap.get(id);                        if (null != circleView && null != circleView.imageView) {                            circleView.imageView.clearAnimation();                            circleView.imageView.startAnimation(new TouchUpAnimation(id).create());                        }                        break;                    case HANDLER_UP_ANIM_END:                        id = (int) msg.obj;                        circleView = mCircleViewMap.get(id);                        if (null != circleView && null != circleView.imageView) {                            if (!circleView.downAnimRuning) {                                circleView.imageView.clearAnimation();                                removeView(circleView.imageView);                                mCircleViewMap.remove(id);                            }                        }                        break;                }            }        };    }    public class CircleView {        ImageView imageView;        View mRelatedView;        boolean downAnimRuning = false;        boolean upAnimRuning = false;        boolean upAnimWaiting = false;    }    @Override    protected void onLayout(boolean changed, int l, int t, int r, int b) {    }    public ImageView createCircleView() {        ImageView iv = new ImageView(mContext);        iv.setImageResource(R.drawable.button_touch_circle_shape);        return iv;    }    public void onButtonTouch(View v, MotionEvent event) {        int action = event.getAction();        if (action == MotionEvent.ACTION_DOWN) {            CircleView circleView = mCircleViewMap.get(v.getId());            if (circleView == null) {                circleView = new CircleView();                circleView.imageView = createCircleView();                circleView.mRelatedView = v;                mCircleViewMap.put(v.getId(), circleView);                int left = v.getLeft() + v.getWidth() / 2 - mCircleRadius;                int top = v.getTop() + v.getHeight() / 2 - mCircleRadius;                int right = v.getRight() - v.getWidth() / 2 + mCircleRadius;                int bottom = v.getBottom() - v.getHeight() / 2 + mCircleRadius;                addView(circleView.imageView);                circleView.imageView.layout(left, top, right, bottom);            }            circleView.upAnimWaiting = false;            circleView.upAnimRuning = false;            circleView.downAnimRuning = true;            circleView.imageView.clearAnimation();            circleView.imageView.startAnimation(new TouchDownAnimation(v.getId()).create());        } else if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) {            if (mCircleViewMap.get(v.getId()) != null) {                if (mCircleViewMap.get(v.getId()).downAnimRuning) {                    mCircleViewMap.get(v.getId()).upAnimWaiting = true;                } else {                    mCircleViewMap.get(v.getId()).imageView.clearAnimation();                    mCircleViewMap.get(v.getId()).imageView.startAnimation(new TouchUpAnimation(v.getId()).create());                }            }        }    }    private class TouchDownAnimation {        private int viewId = 0;        public TouchDownAnimation(int id) {            viewId = id;        }        public AnimationSet create() {            AlphaAnimation alphaAnimation;            ScaleAnimation scaleAnimation;            alphaAnimation = new AlphaAnimation(0, 1);            scaleAnimation = new ScaleAnimation(0, 1.0f, 0, 1.0f, Animation.RELATIVE_TO_SELF, 0.5f,                    Animation.RELATIVE_TO_SELF, 0.5f);            AnimationSet animationSet = new AnimationSet(true);            animationSet.addAnimation(alphaAnimation);            animationSet.addAnimation(scaleAnimation);            animationSet.setDuration(180);            animationSet.setInterpolator(new DecelerateInterpolator());            animationSet.setFillAfter(true);            animationSet.setAnimationListener(new Animation.AnimationListener() {                @Override                public void onAnimationStart(Animation animation) {                    mCircleViewMap.get(viewId).downAnimRuning = true;                }                @Override                public void onAnimationEnd(Animation animation) {                    if (mCircleViewMap.get(viewId) != null) {                        mCircleViewMap.get(viewId).downAnimRuning = false;                        boolean processTheRelatedViewDisabled = !(mCircleViewMap.get(viewId).mRelatedView == null                                || mCircleViewMap.get(viewId).mRelatedView.isEnabled());                        if (mCircleViewMap.get(viewId).upAnimWaiting || processTheRelatedViewDisabled) {                            mCircleViewMap.get(viewId).upAnimWaiting = false;                            mHandler.sendMessage(mHandler.obtainMessage(HANDLER_START_UP_ANIM, viewId));                        }                    }                }                @Override                public void onAnimationRepeat(Animation animation) {                }            });            return animationSet;        }    }    private class TouchUpAnimation {        private int viewId = 0;        public TouchUpAnimation(int id) {            viewId = id;        }        public AnimationSet create() {            AlphaAnimation alphaAnimation;            ScaleAnimation scaleAnimation;            alphaAnimation = new AlphaAnimation(1, 0);            scaleAnimation = new ScaleAnimation(1.f, 2.f, 1.f, 2.f, Animation.RELATIVE_TO_SELF, 0.5f,                    Animation.RELATIVE_TO_SELF, 0.5f);            AnimationSet animationSet = new AnimationSet(true);            animationSet.addAnimation(alphaAnimation);            animationSet.addAnimation(scaleAnimation);            animationSet.setDuration(400);            animationSet.setInterpolator(new DecelerateInterpolator());            animationSet.setFillAfter(true);            animationSet.setAnimationListener(new Animation.AnimationListener() {                @Override                public void onAnimationStart(Animation animation) {                    mCircleViewMap.get(viewId).upAnimRuning = true;                }                @Override                public void onAnimationEnd(Animation animation) {                    if (mCircleViewMap.get(viewId) != null) {                        mCircleViewMap.get(viewId).upAnimRuning = false;                        mHandler.sendMessage(mHandler.obtainMessage(HANDLER_UP_ANIM_END, viewId));                    }                }                @Override                public void onAnimationRepeat(Animation animation) {                }            });            return animationSet;        }    }    public void abortAnimation(int viewId) {        if (mCircleViewMap.get(viewId) != null) {            if (null != mHandler) {                mHandler.removeMessages(HANDLER_START_UP_ANIM, viewId);                mHandler.removeMessages(HANDLER_UP_ANIM_END, viewId);            }            mCircleViewMap.get(viewId).imageView.clearAnimation();            removeView(mCircleViewMap.get(viewId).imageView);            mCircleViewMap.remove(viewId);        }    }    public void abortAllAnimation() {        Iterator iter = mCircleViewMap.entrySet().iterator();        while (iter.hasNext()) {            Map.Entry entry = (Map.Entry) iter.next();            Integer key = (Integer) entry.getKey();            abortAnimation(key);        }    }}
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