Android 褪色动画
我正在尝试用android制作淡入淡出的动画。通过点击一个图像转换发生,我可以看到下一个图像 但如何通过单击第二个图像返回到第一个图像Android 褪色动画,android,android-animation,Android,Android Animation,我正在尝试用android制作淡入淡出的动画。通过点击一个图像转换发生,我可以看到下一个图像 但如何通过单击第二个图像返回到第一个图像 public void fade (View view) { ImageView naruto = (ImageView) findViewById(R.id.naruto); ImageView sasuke = (ImageView) findViewById(R.id.sasuke); naruto.animate().alpha(
public void fade (View view) {
ImageView naruto = (ImageView) findViewById(R.id.naruto);
ImageView sasuke = (ImageView) findViewById(R.id.sasuke);
naruto.animate().alpha(0f).setDuration(2000);
sasuke.animate().alpha(1f).setDuration(2000);
}
public void reappear (View view) {
ImageView sasuke1 = (ImageView) findViewById(R.id.sasuke);
ImageView naruto1 = (ImageView) findViewById(R.id.naruto);
sasuke1.animate().alpha(0f).setDuration(2000);
naruto1.animate().alpha(1f).setDuration(2000);
}
褪色:
重新出现:
public void reappear (View view) {
ImageView sasuke = (ImageView) findViewById(R.id.sasuke);
ImageView naruto = (ImageView) findViewById(R.id.naruto);
sasuke.animate().alpha(0f).setDuration(2000).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
naruto.setVisibility(View.GONE);
}
});
naruto.setAlpha(0f);
naruto.setVisibility(View.VISIBLE);
naruto.animate().alpha(1f).setDuration(2000);
}
处理ViewPropertyAnimator时,无需使用AnimatorListenerAdapter或AnimatorListener。相反,您可以使用:
sasuke.animate().alpha(0f).setDuration(2000).withEndAction(new Runnable(){@Override public void run(){sasuke.setVisibility(View.GONE);})代码>
public void reappear (View view) {
ImageView sasuke = (ImageView) findViewById(R.id.sasuke);
ImageView naruto = (ImageView) findViewById(R.id.naruto);
sasuke.animate().alpha(0f).setDuration(2000).setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
naruto.setVisibility(View.GONE);
}
});
naruto.setAlpha(0f);
naruto.setVisibility(View.VISIBLE);
naruto.animate().alpha(1f).setDuration(2000);
}