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