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我收到此错误消息：在添加内容之前必须调用 requestFeature()。我已经在 stackowerflow 上阅读了有关此错误消息的其他问题，如果我理解正确，那就是不要在 requestFeature() 之前调用 setContentView()。但这不是我在 onCreate 方法中所做的吗？或者错误可能与其他事情有关？我很困惑，希望能得到一些帮助来解决这个错误！谢谢！

    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //setContentView(R.layout.activity_main);

    // Set screen to landscape
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    // Remove title from screen
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    // Set screen to full screen
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    // Create a new object of GameLoop and pass this context
    gameLoop = new GameLoop(this);
    gameLoop.setOnTouchListener(this);
    setContentView(gameLoop);
}

编辑：LogCat

04-25 08:19:07.937: I/ApplicationPackageManager(6365): cscCountry is not German : NEE
04-25 08:19:08.085: W/dalvikvm(6365): threadid=9: thread exiting with uncaught exception (group=0x40018578)
04-25 08:19:08.101: E/AndroidRuntime(6365): FATAL EXCEPTION: Thread-10
04-25 08:19:08.101: E/AndroidRuntime(6365): java.lang.NullPointerException
04-25 08:19:08.101: E/AndroidRuntime(6365):     at  com.android.mergemania.GameLoop.drawObjects(GameLoop.java:78)
04-25 08:19:08.101: E/AndroidRuntime(6365):     at  com.android.mergemania.GameLoop.run(GameLoop.java:63)
04-25 08:19:08.101: E/AndroidRuntime(6365):     at java.lang.Thread.run(Thread.java:1019)
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2 回答 2

2

您必须在请求窗口功能后设置方向。您的陈述必须按以下顺序

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

    // Remove title from screen
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    // Set screen to full screen
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    // Set screen to landscape
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

    // Create a new object of GameLoop and pass this context
    gameLoop = new GameLoop(this);
    gameLoop.setOnTouchListener(this);
    setContentView(gameLoop);
}
于 2013-04-25T06:06:54.583 回答
1

试试这个：

protected void onCreate(Bundle savedInstanceState) {

requestWindowFeature(Window.FEATURE_NO_TITLE);
    super.onCreate(savedInstanceState);
    //setContentView(R.layout.activity_main);

    // Set screen to landscape
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    // Remove title from screen

    // Set screen to full screen
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    // Create a new object of GameLoop and pass this context
    gameLoop = new GameLoop(this);
    gameLoop.setOnTouchListener(this);
    setContentView(gameLoop);
}
于 2013-04-25T06:09:33.847 回答