PPTVLoading

来源：互联网发布：金枪鱼软件下载编辑：程序博客网时间：2024/06/06 04:20
public class PPTVLoading extends View{    private Paint paint1;    private Paint paint2;    //default color    private int color1 = Color.parseColor("#ff0099cc");    private int color2 = Color.parseColor("#ff669900");    private boolean init = false;    private ValueAnimator valueAnimator;    private float numb = 0;    private boolean stop = false;    private int R = 0;    public PPTVLoading(Context context, AttributeSet attrs) {        super(context, attrs);        paint1 = new Paint(Paint.ANTI_ALIAS_FLAG);        paint2 = new Paint(Paint.ANTI_ALIAS_FLAG);        paint1.setColor(color1);        paint2.setColor(color2);    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        if (!init) {            init = true;            R = getWidth() / 8;            start();        }        numb = (float) valueAnimator.getAnimatedValue();        if (numb < 0) {            canvas.drawCircle((getWidth() - 2 * R) * (1 - Math.abs(numb)) + R, getHeight() / 2, R - 5, paint2);            canvas.drawCircle((getWidth() - 2 * R) * Math.abs(numb) + R, getHeight() / 2, R - 5 * (float) Math.abs(Math.abs(numb) - 0.8), paint1);        } else {            canvas.drawCircle((getWidth() - 2 * R) * (1 - Math.abs(numb - 1)) + R, getHeight() / 2, R - 5, paint1);            canvas.drawCircle((getWidth() - 2 * R) * Math.abs(numb - 1) + R, getHeight() / 2, R - 5 * (float) Math.abs(Math.abs(numb) - 0.8), paint2);        }        if (valueAnimator.isRunning()) {            invalidate();        }    }    public void start() {        if (valueAnimator == null) {            valueAnimator = getValueAnimator();        } else {            valueAnimator.start();        }        if (stop == false) {            postDelayed(new Runnable() {                @Override                public void run() {                    start();                    invalidate();                }            }, valueAnimator.getDuration());        }    }    public void stop() {        this.stop = true;    }    private ValueAnimator getValueAnimator() {        ValueAnimator valueAnimator = ValueAnimator.ofFloat(-1f, 1f);        valueAnimator.setDuration(1500);        valueAnimator.setInterpolator(new LinearInterpolator());        valueAnimator.start();        return valueAnimator;    }}
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