从静态方法调用finish() [英] call finish() from static method

问题描述

我正在使用Facebook Android SDK，并希望在用户登录并获取用户对象后关闭我的活动.实际上，我会存储其中的一部分，但是无论如何我都想关闭该活动.

I am using the Facebook Android SDK and want to close my Activity after a user logs in and gets the user object. In practice I am storing parts of it but I want to close the activity regardless.

      // make request to the /me API
      Request.executeMeRequestAsync(session, new Request.GraphUserCallback() {

        // callback after Graph API response with user object
        @Override
        public void onCompleted(GraphUser user, Response response) {
          if (user != null) {
           finish(); // causes errors
          }
        }
      });

finish()上的IDE错误消息是:"Cannot make a static reference to the non-static method finish() from the type Activity"

The IDE error message on finish() is: "Cannot make a static reference to the non-static method finish() from the type Activity"

如何进行?

推荐答案

在onCreate中创建对您的活动的引用

Create a reference to your activity in onCreate with

//onCreate
final Activity activity = this;

然后您可以在onCompleted回调中使用它

Then you can use that in your onCompleted callback

activity.finish();

您可能必须将Activity activity设置为全局.

You might have to make Activity activity global.

编辑2/26/2014:

EDIT 2/26/2014:

请注意，从静态方法调用finish()可能是不好的做法.您正在告诉Activity的特定实例及其自身的生命周期，它应该将自己从静态方法中关闭，这种方法没有任何生命周期或状态.理想情况下，您将从绑定了Activity的对象调用finish().

Note that calling finish() from a static method is probably bad practice. You are telling a specific instance of an Activity with it's own lifecycle that it should shut itself down from a static method, something without any lifecycle or state. Ideally you'd call finish() from something with a binding to the Activity.

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