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 2015/10/19.
*/
public class BallPulseSyncIndicator extends Indicator {
float[] translateYFloats=new float[3];
@Override
public void draw(Canvas canvas, Paint paint) {
float circleSpacing=4;
float radius=(getWidth()-circleSpacing*2)/6;
float x = getWidth()/ 2-(radius*2+circleSpacing);
for (int i = 0; i < 3; i++) {
canvas.save();
float translateX=x+(radius*2)*i+circleSpacing*i;
canvas.translate(translateX, translateYFloats[i]);
canvas.drawCircle(0, 0, radius, paint);
canvas.restore();
}
}
@Override
public ArrayList<ValueAnimator> onCreateAnimators() {
ArrayList<ValueAnimator> animators=new ArrayList<>();
float circleSpacing=4;
float radius=(getWidth()-circleSpacing*2)/6;
int[] delays=new int[]{70,140,210};
for (int i = 0; i < 3; i++) {
final int index=i;
ValueAnimator scaleAnim= ValueAnimator.ofFloat(getHeight()/2,getHeight()/2-radius*2,getHeight()/2);
scaleAnim.setDuration(600);
scaleAnim.setRepeatCount(-1);
scaleAnim.setStartDelay(delays[i]);
addUpdateListener(scaleAnim,new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
translateYFloats[index] = (float) animation.getAnimatedValue();
postInvalidate();
}
});
animators.add(scaleAnim);
}
return animators;
}
}