package com.wang.avi.indicators;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.animation.ValueAnimator;
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import com.wang.avi.Indicator;
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import java.util.ArrayList;
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/**
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* Created by Jack on 2015/10/20.
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*/
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public class BallGridBeatIndicator extends Indicator {
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public static final int ALPHA=255;
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int[] alphas=new int[]{ALPHA,
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ALPHA,
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ALPHA,
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ALPHA,
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ALPHA,
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ALPHA,
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ALPHA,
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ALPHA,
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ALPHA};
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@Override
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public void draw(Canvas canvas, Paint paint) {
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float circleSpacing=4;
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float radius=(getWidth()-circleSpacing*4)/6;
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float x = getWidth()/ 2-(radius*2+circleSpacing);
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float y = getWidth()/ 2-(radius*2+circleSpacing);
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for (int i = 0; i < 3; i++) {
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for (int j = 0; j < 3; j++) {
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canvas.save();
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float translateX=x+(radius*2)*j+circleSpacing*j;
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float translateY=y+(radius*2)*i+circleSpacing*i;
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canvas.translate(translateX, translateY);
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paint.setAlpha(alphas[3 * i + j]);
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canvas.drawCircle(0, 0, radius, paint);
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canvas.restore();
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}
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}
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}
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@Override
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public ArrayList<ValueAnimator> onCreateAnimators() {
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ArrayList<ValueAnimator> animators=new ArrayList<>();
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int[] durations={960, 930, 1190, 1130, 1340, 940, 1200, 820, 1190};
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int[] delays= {360, 400, 680, 410, 710, -150, -120, 10, 320};
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for (int i = 0; i < 9; i++) {
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final int index=i;
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ValueAnimator alphaAnim=ValueAnimator.ofInt(255, 168,255);
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alphaAnim.setDuration(durations[i]);
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alphaAnim.setRepeatCount(-1);
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alphaAnim.setStartDelay(delays[i]);
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addUpdateListener(alphaAnim,new ValueAnimator.AnimatorUpdateListener() {
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@Override
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public void onAnimationUpdate(ValueAnimator animation) {
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alphas[index] = (int) animation.getAnimatedValue();
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postInvalidate();
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}
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});
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animators.add(alphaAnim);
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}
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return animators;
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}
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}
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