我有以下代码：
public boolean stopped = false;
public void fadeOut(final ImageView obj, final int time, int delay)
{
if(stopped)
{
stopped = false;
anim = new AlphaAnimation(1.00f, 0.00f);
anim.setDuration(time);
if(delay > 0)
{
anim.setStartOffset(delay);
}
anim.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
Log.v("FADER", "Fading out. Duration: " + time + "ms.");
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
Log.v("FADER", "Fading out finished.");
//obj.setAlpha(255);
stopped = true;
}
});
obj.startAnimation(anim);
}
}
这段代码工作正常。我的对象（一个 ImageView）漂亮地淡出。但是当我运行这个时：
public void fadeIn(final ImageView obj, final int time, int delay)
{
if(stopped)
{
stopped = false;
anim = new AlphaAnimation(0, 1);
anim.setDuration(time);
if(delay > 0)
{
anim.setStartOffset(delay);
}
anim.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
Log.v("FADER", "Fading in. Duration: " + time + "ms.");
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
Log.v("FADER", "Fading in finished.");
//obj.setAlpha(255);
stopped = true;
}
});
obj.startAnimation(anim);
}
}
它不起作用 - 没有淡入。ImageView保持完全透明。
这是为什么，有什么想法吗？
对于那些想知道的人，是的，我已经声明并设置了 boolean stopped，所以这不是问题，因为当我查看 LogCat 时，它会在运行fadeIn()函数时打印文本。