private void initView() {
// 圆环
mCirclePaint = new Paint();
mCirclePaint.setAntiAlias(true);
mCirclePaint.setColor(mBigCircleColor);
mCirclePaint.setStrokeWidth(mBigCircleStroke);
mCirclePaint.setStyle(Paint.Style.STROKE);
// 小球
mAccBallPaint = new Paint();
mAccBallPaint.setAntiAlias(true);
mAccBallPaint.setColor(mAccBallColor);
mAccBallPaint.setStyle(Paint.Style.FILL);
rectF = new RectF(0, 0, ScreenUtil.getDisplayWidth() >> 1, ScreenUtil.getDisplayWidth() >> 1);
startRotate(2000);
}
@TargetApi(Build.VERSION_CODES.M)
private class LoadingView extends View {
private static final int DEF_DURATION = 1000;
// paint
private Paint mCirclePaint;
private Paint mAccBallPaint;
private RectF rectF;
private int mBigCircleColor = getResources().getColor(R.color.color_green_highlight);
private int mAccBallColor = getResources().getColor(R.color.color_orange_assist);
private int mBigCircleStroke = ScreenUtil.dp2px(1);
private int mDuration = DEF_DURATION;
private float mBitRadius = ScreenUtil.dp2px(50);
private float mSmallRadius = ScreenUtil.dp2px(10);
private float startAngle = 0.0f;
public LoadingView(Context context) {
this(context, null);
}
public LoadingView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public LoadingView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView();
}
private void initView() {
// 圆环
mCirclePaint = new Paint();
mCirclePaint.setAntiAlias(true);
mCirclePaint.setColor(mBigCircleColor);
mCirclePaint.setStrokeWidth(mBigCircleStroke);
mCirclePaint.setStyle(Paint.Style.STROKE);
// 小球
mAccBallPaint = new Paint();
mAccBallPaint.setAntiAlias(true);
mAccBallPaint.setColor(mAccBallColor);
mAccBallPaint.setStyle(Paint.Style.FILL);
rectF = new RectF(0, 0, ScreenUtil.getDisplayWidth() >> 1, ScreenUtil.getDisplayWidth() >> 1);
startRotate(2000);
}
private void startRotate(long duration) {
LinearAnimation animation = new LinearAnimation();
animation.setDuration(duration);
animation.setRepeatCount(Animation.INFINITE);
animation.setInterpolator(new LinearInterpolator());
animation.setLinearAnimationListener(
new LinearAnimation.LinearAnimationListener() {
@Override
public void applyTans(float interpolatedTime) {
startAngle = 360 * interpolatedTime;
invalidate();
}
});
startAnimation(animation);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
@Override
protected void onDraw(Canvas canvas) {
// drawSeekbar(canvas, 100);
drawSlowIndicator(startAngle, canvas);
}
private void drawSlowIndicator(float startAngle, Canvas canvas) {
Paint circlePaint = new Paint();
circlePaint.setAntiAlias(true);
circlePaint.setColor(Color.parseColor("#A8D7A7"));
circlePaint.setStrokeWidth(7);
circlePaint.setStyle(Paint.Style.STROKE);
canvas.drawPath(getArcPath(), circlePaint);
int restoreCount = canvas.save();
canvas.translate(rectF.centerX(), rectF.centerY());
circlePaint.setStyle(Paint.Style.FILL);
canvas.drawPath(getBallPath(startAngle + 90), circlePaint);
canvas.drawPath(getBallPath(startAngle + 90 + 30 + 90), circlePaint);
canvas.drawPath(getBallPath(startAngle + 90 + 30 + 90 + 30 + 90), circlePaint);
canvas.restoreToCount(restoreCount);
}
private Path getArcPath() {
Path path = new Path();
path.addArc(rectF, startAngle, 90);
path.addArc(rectF, startAngle + 90 + 30, 90);
path.addArc(rectF, startAngle + 90 + 90 + 30 + 30, 90);
return path;
}
private void drawSeekbar(Canvas canvas, float startAngle) {
Paint circlePaint = new Paint();
circlePaint.setAntiAlias(true);
circlePaint.setColor(Color.parseColor("#FF4444"));
circlePaint.setStrokeWidth(7);
circlePaint.setStyle(Paint.Style.STROKE);
Path path = new Path();
path.addArc(rectF, 0, startAngle);
canvas.drawPath(path, circlePaint);
int restoreCount = canvas.save();
canvas.translate(rectF.centerX(), rectF.centerY());
circlePaint.setStyle(Paint.Style.FILL);
canvas.drawPath(getBallPath(startAngle), circlePaint);
canvas.restoreToCount(restoreCount);
}
private Path getBallPath(float startAngle) {
double sweepAngle = Math.PI / 180 * startAngle;
Path path = new Path();
float x = (float) Math.cos(sweepAngle) * (rectF.width() / 2);
float y = (float) Math.sin(sweepAngle) * (rectF.width() / 2);
path.moveTo(x, y);
path.addCircle(x, y, 10, Path.Direction.CCW);
return path;
}
}