高仿映客直播点亮功能，VectorDrawable+PropertyAnimation实战篇

package com.goach.love.view; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.animation.ValueAnimator; import android.content.Context; import android.graphics.Color; import android.graphics.Point; import android.graphics.drawable.Drawable; import android.graphics.drawable.LayerDrawable; import android.support.graphics.drawable.VectorDrawableCompat; import android.util.AttributeSet; import android.view.ViewGroup; import android.view.animation.LinearInterpolator; import android.widget.ImageView; import com.goach.love.R; import com.goach.love.utils.LoveEvaluator; import java.util.Random; /** * Created by 钟光新 on 2016/7/1 0001. */ public class LoveAnimView extends ImageView implements ValueAnimator.AnimatorUpdateListener{ private Point mStartPoint; private Point mEndPoint; private int[] colors = new int[]{Color.YELLOW,Color.BLACK,Color.BLUE,Color.RED,Color.GREEN}; public LoveAnimView(Context context) { this(context,null); } public LoveAnimView(Context context, AttributeSet attrs) { this(context, attrs,0); } public LoveAnimView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); VectorDrawableCompat a = VectorDrawableCompat.create(getResources(), R.drawable.love_drawable, getResources().newTheme()); Random random = new Random(); int round = random.nextInt(5); a.setTint(colors[round]); //DrawableCompat.setTint(a,colors[round]); VectorDrawableCompat boardVdc = VectorDrawableCompat.create(getResources(), R.drawable.border_drawable, getResources().newTheme()); Drawable[] drawable = new Drawable[2]; drawable[0] = a; drawable[1] = boardVdc; LayerDrawable layerDrawable = new LayerDrawable(drawable); setImageDrawable(layerDrawable); } public void setStartPosition(Point startPosition) { startPosition.y -= 10; this.mStartPoint = startPosition; } public void setEndPosition(Point endPosition) { this.mEndPoint = endPosition; } public void startLoveAnimation(){ if(mStartPoint==null||mEndPoint==null) throw new IllegalArgumentException("mStartPoint is not null or mEndPoint is not null"); int dirPointX = (int)(Math.random()*330); int dirPointY = (mStartPoint.y+mEndPoint.y)/2; Point dirPoint = new Point(dirPointX,dirPointY); LoveEvaluator loveEvaluator = new LoveEvaluator(dirPoint); ValueAnimator animator = ValueAnimator.ofObject(loveEvaluator,mStartPoint,mEndPoint); animator.addUpdateListener(this); animator.setDuration(2000); animator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { super.onAnimationEnd(animation); ViewGroup viewGroup = (ViewGroup) getParent(); setAlpha(0f); viewGroup.removeView(LoveAnimView.this); } }); animator.setInterpolator(new LinearInterpolator()); animator.start(); } @Override public void onAnimationUpdate(ValueAnimator valueAnimator) { Point point = (Point) valueAnimator.getAnimatedValue(); setX(point.x); setY(point.y); float value = point.y*1.0f/mStartPoint.y; setAlpha(value); invalidate(); } }