安卓暂停动画(Android Pause animation)

我想停止动画，一旦我在button..I点击意味着我要暂停被点击时有动画显示一个按钮，并希望在地方button.I的显示图像要为API级> 11做到这一点。我使用的价值为动画帮助animation.Please

Answer 1:

还有在API级别11.暂停/恢复动画API等级19已添加的功能没有支持的API。

然而，这里是一个你可以尝试的解决方案https://stackoverflow.com/a/7840895/3025732

Answer 2:

我所做的就是创建自己的interpolatedTime价值，而忽略了一个发送。

如果动画暂停时，我不断更新我经过的时间。然后，我caluclate我自己插的时间价值和使用，不管是什么动画我做的。

/**
 * The animator for the LinearProgressBar.
 */
class LinearProgressBarAnimator extends Animation
{
    private LinearProgressBar _bar;

    /**
     * The desired fill percent when done animating.
     */
    private float _newFillPercent;

    /**
     * The current fill percent.
     */
    private float _oldFillPercent;

    /**
     * Keeps track of if this object is in a paused state.
     */
    private boolean _paused;

    /**
     * TimeConstants trackers to fire _onSecondTick
     * at consistent 1 second intervals.
     */
    private long _accumulatedTickTime;
    private long _lastAccumulatedTime;

    /**
     * Creates a linear progress bar animator with the reference bar and desired fill percent.
     * Call Animate() in order to make it animate the ProgressBar.
     * @param bar
     * @param newFillPercent
     */
    public LinearProgressBarAnimator(LinearProgressBar bar, float newFillPercent)
    {
        super();

        _newFillPercent      = newFillPercent;
        _oldFillPercent      = bar.getFillPercent();
        _bar                 = bar;
        _paused              = false;
        _accumulatedTickTime = 0;
        _lastAccumulatedTime = TimeConstants.NOT_SET;
    }

    /**
     * Applies the interpolated change in fill percent.
     * @param interpolatedTime
     * @param transformation
     */
    @Override
    protected void applyTransformation(float interpolatedTime, Transformation transformation)
    {
        if (_lastAccumulatedTime == TimeConstants.NOT_SET || _paused)
        {
            _lastAccumulatedTime = System.currentTimeMillis();
            return;
        }

        _accumulatedTickTime += System.currentTimeMillis() - _lastAccumulatedTime;

        // This handles pausing, the passed interpolatedTime is ignored
        float adjustedInterpolatedTimed = (float)_accumulatedTickTime / (float)getDuration();
        float newTimeAdjustedFillPercent = _oldFillPercent + ((_newFillPercent - _oldFillPercent) * adjustedInterpolatedTimed);
        _bar.setFillPercent(newTimeAdjustedFillPercent);
        _bar.requestLayout();

        _lastAccumulatedTime = System.currentTimeMillis();
    }

    public void pause()
    {
        _paused = true;
    }

    public void play()
    {
        _paused = false;
    }
}