Android:如何沿对角线扩展和收缩视图?
我正在尝试设置一个视图的动画,该视图会扩展和收缩回初始大小。我尝试使用动画集添加两个动画,以便第二个动画将在第一个动画之后开始,但无法使其工作Android:如何沿对角线扩展和收缩视图?,android,animation,Android,Animation,我正在尝试设置一个视图的动画,该视图会扩展和收缩回初始大小。我尝试使用动画集添加两个动画,以便第二个动画将在第一个动画之后开始,但无法使其工作 AnimationSet expandAndShrink = new AnimationSet(true); ScaleAnimation expand = new ScaleAnimation( 1f, 1.5f, 1f, 1.5f, Animation.RELATIVE_TO_PARENT, 0, Anima
AnimationSet expandAndShrink = new AnimationSet(true);
ScaleAnimation expand = new ScaleAnimation(
1f, 1.5f,
1f, 1.5f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
ScaleAnimation shrink = new ScaleAnimation(
1.5f, 1f,
1.5f, 1f,
Animation.RELATIVE_TO_PARENT, 1f,
Animation.RELATIVE_TO_PARENT, 1f);
expandAndShrink.addAnimation(expand);
expandAndShrink.addAnimation(shrink)
expandAndShrink.setFillAfter(true);
expandAndShrink.setDuration(1000);
expandAndShrink.setInterpolator(new AccelerateInterpolator(1.0f));
view.bringToFront();
view.startAnimation(expandAndShrink);
我真的很感激任何能让它工作的帮助。提前感谢我修复了扩展和收缩动画,并为这两种动画增加了持续时间。还应添加shrink.setStartOffset1000;所以第二个动画稍后开始
AnimationSet expandAndShrink = new AnimationSet(true);
ScaleAnimation expand = new ScaleAnimation(
1f, 1.5f,
1f, 1.5f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
expand.setDuration(1000);
ScaleAnimation shrink = new ScaleAnimation(
1.5f, 1f,
1.5f, 1f,
Animation.RELATIVE_TO_PARENT, 0f,
Animation.RELATIVE_TO_PARENT, 0f);
shrink.setStartOffset(1000);
shrink.setDuration(1000);
expandAndShrink.addAnimation(expand);
expandAndShrink.addAnimation(shrink);
expandAndShrink.setFillAfter(true);
expandAndShrink.setInterpolator(new AccelerateInterpolator(1.0f));
view.startAnimation(expandAndShrink);
我已经修复了扩展和收缩动画,并为这两种动画添加了持续时间。还应添加shrink.setStartOffset1000;所以第二个动画稍后开始
AnimationSet expandAndShrink = new AnimationSet(true);
ScaleAnimation expand = new ScaleAnimation(
1f, 1.5f,
1f, 1.5f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
expand.setDuration(1000);
ScaleAnimation shrink = new ScaleAnimation(
1.5f, 1f,
1.5f, 1f,
Animation.RELATIVE_TO_PARENT, 0f,
Animation.RELATIVE_TO_PARENT, 0f);
shrink.setStartOffset(1000);
shrink.setDuration(1000);
expandAndShrink.addAnimation(expand);
expandAndShrink.addAnimation(shrink);
expandAndShrink.setFillAfter(true);
expandAndShrink.setInterpolator(new AccelerateInterpolator(1.0f));
view.startAnimation(expandAndShrink);
我将解释我选择的设置布局更改动画的方式 Android有一个名为ScaleAnimation的特殊动画类,我们可以在其中平滑地展开或折叠视图 通过对角展开显示视图:
ScaleAnimation expanding = new ScaleAnimation(
0, 1.0f,
0, 1.0f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
expanding.setDuration(250);
view.startAnimation(expanding)
其中使用的构造函数是:
ScaleAnimation(float fromX, float toX, float fromY, float toY, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue)
因此,您可以相应地更改值
例如,下面的示例将水平设置视图的动画:
ScaleAnimation expanding = new ScaleAnimation(
0, 1.1f,
1f, 1f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
expanding.setDuration(250);
您可以根据需要更换fromX、toX、fromY和toY
例如,如果显示视图,您只需将其展开,根据需要将fromX和fromY放置到1.0f,以及toX和toY
现在,使用同一个类,您可以创建一个更酷的视图显示效果,方法是将视图额外展开一点,然后将其缩小到原始大小。为此,将使用AnimationSet。所以它会产生一种泡沫效应
以下示例用于创建用于显示视图的气泡效果:
AnimationSet expandThenShrink = new AnimationSet(true);
ScaleAnimation expanding = new ScaleAnimation(
0, 1.1f,
0, 1.1f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
expanding.setDuration(250);
ScaleAnimation shrinking = new ScaleAnimation(
1.1f, 1f,
1.1f, 1f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
shrinking.setStartOffset(250);
shrinking.setDuration(120);
expandThenShrink.addAnimation(expanding);
expandThenShrink.addAnimation(shrinking);
expandThenShrink.setFillAfter(true);
expandThenShrink.setInterpolator(new AccelerateInterpolator(1.0f));
view.startAnimation(expandThenShrink);
我将解释我选择的设置布局更改动画的方式 Android有一个名为ScaleAnimation的特殊动画类,我们可以在其中平滑地展开或折叠视图 通过对角展开显示视图:
ScaleAnimation expanding = new ScaleAnimation(
0, 1.0f,
0, 1.0f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
expanding.setDuration(250);
view.startAnimation(expanding)
其中使用的构造函数是:
ScaleAnimation(float fromX, float toX, float fromY, float toY, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue)
因此,您可以相应地更改值
例如,下面的示例将水平设置视图的动画:
ScaleAnimation expanding = new ScaleAnimation(
0, 1.1f,
1f, 1f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
expanding.setDuration(250);
您可以根据需要更换fromX、toX、fromY和toY
例如,如果显示视图,您只需将其展开,根据需要将fromX和fromY放置到1.0f,以及toX和toY
现在,使用同一个类,您可以创建一个更酷的视图显示效果,方法是将视图额外展开一点,然后将其缩小到原始大小。为此,将使用AnimationSet。所以它会产生一种泡沫效应
以下示例用于创建用于显示视图的气泡效果:
AnimationSet expandThenShrink = new AnimationSet(true);
ScaleAnimation expanding = new ScaleAnimation(
0, 1.1f,
0, 1.1f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
expanding.setDuration(250);
ScaleAnimation shrinking = new ScaleAnimation(
1.1f, 1f,
1.1f, 1f,
Animation.RELATIVE_TO_PARENT, 0,
Animation.RELATIVE_TO_PARENT, 0);
shrinking.setStartOffset(250);
shrinking.setDuration(120);
expandThenShrink.addAnimation(expanding);
expandThenShrink.addAnimation(shrinking);
expandThenShrink.setFillAfter(true);
expandThenShrink.setInterpolator(new AccelerateInterpolator(1.0f));
view.startAnimation(expandThenShrink);