Android Activity淡入淡出动画

从A进B

Intent intent = new Intent(getActivity(), SearchActivity.class);getActivity().startActivity(intent);if (Build.VERSION.SDK_INT >= 5) {    getActivity().overridePendingTransition(R.anim.alpha_in, R.anim.alpha_out);}

从B回A

@Overridepublic void onBackPressed() {    super.onBackPressed();    this.overridePendingTransition(R.anim.alpha_in, R.anim.alpha_out);}

alpha_in.xml

<?xml version="1.0" encoding="utf-8"?><set  xmlns:android="http://schemas.android.com/apk/res/android">    <alpha android:duration="300" android:fromAlpha="0.0" android:toAlpha="1.0"      xmlns:android="http://schemas.android.com/apk/res/android" /></set>
alpha_out.xml
<?xml version="1.0" encoding="utf-8"?><set  xmlns:android="http://schemas.android.com/apk/res/android">    <alpha android:duration="300" android:fromAlpha="1.0" android:toAlpha="0.0"      xmlns:android="http://schemas.android.com/apk/res/android" /></set>