想要在屏幕打开时仅为视图设置动画一次。用户触摸屏

Question

动画电车

if (tram != null && pagePosition == 0 ){
    final Animation animation1=new TranslateAnimation(-100f, 80.0f, 0.0f, 0.0f);

    animation1.setDuration(3000);
    animation1.setRepeatCount(0);
    tram.startAnimation(animation1);
    animation1.setFillAfter(true);

    animation1.setRepeatMode(0);
}

将幻灯片翻译到下一张幻灯片时，我想停止动画。 每当翻译幻灯片时它都会重复动画

Answer 1

这可以帮到你：

  public class CustomTranslateAnimation extends TranslateAnimation {

    public CustomTranslateAnimation(float fromXDelta, float toXDelta, float fromYDelta,
                                    float toYDelta) {
        super(fromXDelta, toXDelta, fromYDelta, toYDelta);
    }

    private long mElapsedAtPause = 0;
    private boolean mPaused = false;

    @Override
    public boolean getTransformation(long currentTime, Transformation outTransformation) {
        if (mPaused && mElapsedAtPause == 0) {
            mElapsedAtPause = currentTime - getStartTime();
        }
        if (mPaused)
            setStartTime(currentTime - mElapsedAtPause);
        return super.getTransformation(currentTime, outTransformation);
    }

    public void pause() {
        mElapsedAtPause = 0;
        mPaused = true;
    }

    public void resume() {
        mPaused = false;
    }
}