java - 到处覆盖 onStop？

Question

简介： 我做了一个淡出/淡入淡出，淡出所有视图的不透明度。我想在切换活动之间制作动画。我现在必须将淡入/淡出添加到每个活动中的每个 onStop/onResume。

问题：是否可以创建一个自定义的重写 onStop 函数并在每个活动中使用它？

Answer 1

创建一个像这样的基础活动

public abstract class BaseActivity extends Activity {

..................
..................
    @Override
    public void onStop() {
        super.onStop();
        // Do your stuff
    }
....................
...................
}

现在在每个活动中扩展基本活动，例如

public class Activity1 extends BaseActivity

Answer 2

This is a suggestion rather than the answer to your questions.

Based on your description, it seems like you want to define a custom transition animation between activities. Why not just define a Style? All you need to do is define windowExitAnimationand windoEnterAnimation in your custom style, and then override windowAnimationStyle.

Check out the developer guide on how how to define your own style Styles and Themes.

Answer 3

是的，您绝对可以覆盖 onStop() 函数。使用 onStop 覆盖器创建活动 StopperActivity

@Override
public void onStop() {
    super.onStop();

}

在其他活动中，只需扩展这个自定义活动而不是活动

Answer 4

创建类BaseActivity

例如

class BaseActivity extends Activity
{
   void onResume()
   {
      super.onResume();
       // your code here (Need to write only once for entire app)
   }
   void onStop()
   {
        super.onStop();
       // your code here of onStop (Need to write only once for entire app)
   }
}

现在将此BaseActivity用于您班级中的所有活动。

class MainActivity extends BaseActivity
{
   ...
}
class AnotherActivity extends BaseActivity
{
   ...
}

这样，您只需为 BaseActivity 中的淡入和淡出编写一次代码。