无端的错误

Question

我试着运行代码来测试程序是否工作，但它似乎没有做任何事情。我收到一个错误，指出fullscreen_contents_controls无法解析（第54行），而出现语法错误（找不到第100行）。你能帮助调试吗？

下面是错误：

描述资源路径位置类型 fullscreen_content_controls不能得到解决或无法在现场Opening.java/MagicSquaresGame/src目录/ COM/mtprogramming/magicsquaresgame 54行的Java问题

描述资源路径位置类型 语法错误，插入“}”以完成MethodBody Opening.java/MagicSquaresGame/src/com/mtprogramming/magicsquaresgame line 100 Java问题

代码：

/** 
* An example full-screen activity that shows and hides the system UI (i.e. 
* status bar and navigation/system bar) with user interaction. 
* 
* @see SystemUiHider 
*/ 
public class Opening extends Activity { 
    /** 
    * Whether or not the system UI should be auto-hidden after 
    * {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds. 
    */ 
    private static final boolean AUTO_HIDE = false; 

    /** 
    * If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after 
    * user interaction before hiding the system UI. 
    */ 
    private static final int AUTO_HIDE_DELAY_MILLIS = 3000; 

    /** 
    * If set, will toggle the system UI visibility upon interaction. Otherwise, 
    * will show the system UI visibility upon interaction. 
    */ 
    private static final boolean TOGGLE_ON_CLICK = true; 

    /** 
    * The flags to pass to {@link SystemUiHider#getInstance}. 
    */ 
    private static final int HIDER_FLAGS = SystemUiHider.FLAG_HIDE_NAVIGATION; 

    /** 
    * The instance of the {@link SystemUiHider} for this activity. 
    */ 
    private SystemUiHider mSystemUiHider; 

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

     setContentView(R.layout.activity_opening); 

     final View controlsView = findViewById(R.id.fullscreen_content_controls); 
     final View contentView = findViewById(R.id.fullscreen_content); 

     // Set up an instance of SystemUiHider to control the system UI for 
     // this activity. 
     mSystemUiHider = SystemUiHider.getInstance(this, contentView, 
       HIDER_FLAGS); 
     mSystemUiHider.setup(); 
     mSystemUiHider 
       .setOnVisibilityChangeListener(new SystemUiHider.OnVisibilityChangeListener() { 
        // Cached values. 
        int mControlsHeight; 
        int mShortAnimTime; 

        @Override 
        @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2) 
        public void onVisibilityChange(boolean visible) { 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) { 
          // If the ViewPropertyAnimator API is available 
          // (Honeycomb MR2 and later), use it to animate the 
          // in-layout UI controls at the bottom of the 
          // screen. 
          if (mControlsHeight == 0) { 
           mControlsHeight = controlsView.getHeight(); 
          } 
          if (mShortAnimTime == 0) { 
           mShortAnimTime = getResources().getInteger(
             android.R.integer.config_shortAnimTime); 
          } 
          controlsView 
            .animate() 
            .translationY(visible ? 0 : mControlsHeight) 
            .setDuration(mShortAnimTime); 
         } else { 
          // If the ViewPropertyAnimator APIs aren't 
          // available, simply show or hide the in-layout UI 
          // controls. 
          controlsView.setVisibility(visible ? View.VISIBLE 
            : View.GONE); 
         } 

         if (visible && AUTO_HIDE) { 
          // Schedule a hide(). 
          delayedHide(AUTO_HIDE_DELAY_MILLIS); 
         } 
        } 
       }); 

     // Set up the user interaction to manually show or hide the system UI. 


     // Upon interacting with UI controls, delay any scheduled hide() 
     // operations to prevent the jarring behavior of controls going away 
     // while interacting with the UI. 


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

     // Trigger the initial hide() shortly after the activity has been 
     // created, to briefly hint to the user that UI controls 
     // are available. 
     delayedHide(100); 
    } 

    /** 
    * Touch listener to use for in-layout UI controls to delay hiding the 
    * system UI. This is to prevent the jarring behavior of controls going away 
    * while interacting with activity UI. 
    */ 
    View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() { 
     @Override 
     public boolean onTouch(View view, MotionEvent motionEvent) { 
      if (AUTO_HIDE) { 
       delayedHide(AUTO_HIDE_DELAY_MILLIS); 
      } 
      return false; 
     } 
    }; 

    Handler mHideHandler = new Handler(); 
    Runnable mHideRunnable = new Runnable() { 
     @Override 
     public void run() { 
      mSystemUiHider.hide(); 
     } 
    }; 

    /** 
    * Schedules a call to hide() in [delay] milliseconds, canceling any 
    * previously scheduled calls. 
    */ 
    private void delayedHide(int delayMillis) { 
     mHideHandler.removeCallbacks(mHideRunnable); 
     mHideHandler.postDelayed(mHideRunnable, delayMillis); 
    } 
} 

Answer 1

你是否确信 “fullscreen_content_controls” 存在于你的XML布局？

你controlsView应该有一个ID属性

<controlsView 
    android:id='full_content_controls' 
    ... 
    >