Android开发之Activity全透明渐变切换方法

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

 
  
  true
  @color/colorPrimary
  @color/tabbackground
  @color/colorAccent
 　　@color/transparent//这个之时全透明
  true
  @style/activityanimation
 
 
  @null
  @null
  @null
  @null
 

2. 设置渐变动画：

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考高分网。