错误:添加内容之前必须先调用requestFeature() [英] Error : requestFeature() must be called before adding content

问题描述

原因:android.util.AndroidRuntimeException:必须在添加内容之前调用requestFeature()

这是我的代码，

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    this.requestWindowFeature(Window.FEATURE_SWIPE_TO_DISMISS);
    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.activity_main);
}}

推荐答案

requestFeature ()必须在添加内容之前被调用

好吧，只要执行错误消息告诉您的内容即可.

Well, just do what the error message tells you.

请勿在requestFeature()之前调用setContentView().

Don't call setContentView() before requestFeature().

注意:

正如评论中所述，对于ActionBarSherlock库和AppCompat库，都必须在super.onCreate()之前调用requestFeature()

As said in comments, for both ActionBarSherlock and AppCompat library, it's necessary to call requestFeature() before super.onCreate()

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