Activity全透明渐变切换
类似于Dialog的显示动画效果一样
1. 先设置Acitivity为去透明，在取消掉Activity默认的切换动画
<style name="AppTheme2" parent="Theme.AppCompat.Light"> <!-- Customize your theme here. --> <item name="windowNoTitle">true</item> <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/tabbackground</item> <item name="colorAccent">@color/colorAccent</item> <item name="android:windowBackground">@color/transparent</item>//这个之时全透明 <item name="android:windowIsTranslucent">true</item> <item name="android:windowAnimationStyle">@style/activityanimation</item> </style> <style name="activityanimation" > <item name="android:activityOpenEnterAnimation">@null</item> <item name="android:activityOpenExitAnimation">@null</item> <item name="android:activityCloseEnterAnimation">@null</item> <item name="android:activityCloseExitAnimation">@null</item> </style>
2. 设置渐变动画：
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/ll" android:orientation="vertical" android:layout_width="match_parent" android:background="#000" android:layout_height="match_parent"> <MyImageView android:layout_width="match_parent" android:layout_height="300dp" android:layout_centerInParent="true" android:clickable="true" android:background="@mipmap/meinv"/> </RelativeLayout>
public class Activitytwo extends AppCompatActivity{
private int tran=0x00000000;
private int end=0x88000000;
private RelativeLayout ll;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.ativity);
ll = (RelativeLayout) findViewById(R.id.ll);
returnposition();
ll.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
public void returnposition()
{
ValueAnimator colorAnim = ObjectAnimator.ofInt(ll, "backgroundColor", tran, end);
colorAnim.setDuration(300);
colorAnim.setEvaluator(new ArgbEvaluator());
colorAnim.start();
}
@Override
public void finish() {
ValueAnimator colorAnim = ObjectAnimator.ofInt(ll, "backgroundColor", end, tran);
colorAnim.setDuration(300);
colorAnim.setEvaluator(new ArgbEvaluator());
colorAnim.start();
super.finish();
}
}
以上这篇Android开发之Activity全透明渐变切换方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持找一找教程网。
