D9-Android自定义控件之动画篇1

/**
 * 下移动画
 */
private ObjectAnimator mMoveDown;

float translationY = getTranslationY();//当前Y偏移量
mMoveDown = ObjectAnimator//创建实例
        //(View,属性名,初始化值,结束值)
        .ofFloat(this, "translationY", translationY, translationY + 300)
        .setDuration(1000);//设置时常

mMoveDown.start();//开启动画

setPivotX(200);
setPivotY(200);

.ofFloat(this, "rotation", 0, 360,360,0,0,90)

translationX.setStartDelay(1000);
translationX.setRepeatCount(2);
translationX.setRepeatMode(ValueAnimator.RESTART);

public void setCircleR(float circleR) {
    mCircleR = circleR;
    invalidate();//记得重绘
}

private ObjectAnimator circleR() {
    return ObjectAnimator//创建实例
            //(View,属性名,初始化值,结束值)
            .ofFloat(this, "circleR", 100, 50,100,20,100)
            .setDuration(3000);//设置时常
}

public void setColor(int color) {
    mColor = color;
    invalidate();
}

private ObjectAnimator color() {
    ObjectAnimator color = ObjectAnimator//创建实例
            //(View,属性名,初始化值,结束值)
            .ofInt(this, "color", 0xff0000ff,0xffF2BA38,0xffDD70BC)
            .setDuration(3000);
    color.setEvaluator(new ArgbEvaluator());//颜色的估值器
    return color;
}