我可以更改 Android startActivity() 过渡动画吗? [英] Can I change the Android startActivity() transition animation?
问题描述
我正在开始一项活动,并且希望 startActivity()
的 alpha 淡入和 finish()
的淡出.我该如何在 Android SDK 中解决这个问题?
I am starting an activity and would rather have a alpha fade-in for startActivity()
, and a fade-out for the finish()
. How can I go about this in the Android SDK?
推荐答案
在执行finish() 的同一语句中,也执行你的动画.然后,在新活动中,运行另一个动画.请参阅此代码:
In the same statement in which you execute finish(), execute your animation there too. Then, in the new activity, run another animation. See this code:
淡入淡出.xml
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true">
<alpha android:fromAlpha="1.0"
android:toAlpha="0.0"
android:duration="500"/> //Time in milliseconds
</set>
在你的毕业班
private void finishTask() {
if("blabbla".equals("blablabla"){
finish();
runFadeInAnimation();
}
}
private void runFadeInAnimation() {
Animation a = AnimationUtils.loadAnimation(this, R.anim.fadein);
a.reset();
LinearLayout ll = (LinearLayout) findViewById(R.id.yourviewhere);
ll.clearAnimation();
ll.startAnimation(a);
}
淡出.xml
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true">
<alpha android:fromAlpha="0.0"
android:toAlpha="1.0"
android:duration="500"/>
</set>
在新的 Activity 类中,您创建一个类似的方法,例如我编写的 runFadeAnimation,然后在 onCreate 中运行它,不要忘记将资源 ID 更改为淡出.
In your new Activity-class you create a similiar method like the runFadeAnimation I wrote and then you run it in onCreate and don't forget to change the resources id to fadeout.
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