Java Android滑动菜单空指针切换

我已经实现了一个滑动菜单，在我想使用菜单的活动中，我用

SlidingMenu sm=getSlidingMenu（）

设置了它。我遇到的问题是，我想通过在画布上创建的按钮来切换它。如果我单击画布上的这些区域，它将停止绘制并打开滑动菜单-工作到这里。但后来我添加了一些带有线性布局和文本视图的内容，单击文本视图文本会发生变化（类似于更改某些选项的菜单）。在它更改一次后，下一次单击应再次切换滑动菜单。 我在另一个类中创建了behind视图，并在包含滑动菜单的活动中触发了一个方法，它如下所示：

    public void toggleSM() {
    Thread splash = new Thread(new Runnable() {

        @SuppressWarnings("static-access")
        @Override
        public void run() {
            try {
                Thread.currentThread().sleep(500);
                getSlidingMenu().toggle(true);
                Thread.currentThread().sleep(1000);
                animateButton.setLeftState(false);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

        }
    });
    splash.start();
}

我添加了睡眠以避免sm动画或更改内容引起的任何问题，AnimetButton将再次触发画布的绘制。但它抛出了一个null指针异常。带或不带滑动菜单的动画

编辑：

我使用的两个类：

public class Ingame extends SlidingActivity implements OnTouchListener{

private LeftMenu lm;
private SlidingMenu sm;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    sh = new ScreenHandler(this);
    fh = new FilesHandler(this);
    animateMap = new AnimateMap(this);
    ch = new CoordsHandler(this);
    animateButton = new AnimateButton();
    sched = new Schedule();
    lm = new LeftMenu(this);

    this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);    
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setupViews();

    lm.setupLeftMenu();
    setBehindContentView(lm.getLayout());
    setupSlidingMenu();
}

@Override
protected void onPause() {
    super.onPause();
    gb.pause();
}
@Override
protected void onResume() {
    super.onResume();
    gb.resume();
}

@SuppressWarnings("deprecation")
public void setupViews() {
    FrameLayout fl = new FrameLayout(getBaseContext());
    LayoutParams sizeP = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
    fl.setLayoutParams(sizeP);
    fl.setBackgroundColor(Color.rgb(0, 153, 204));

    gb = new GameBoard(getBaseContext());
    LayoutParams fillP = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
    gb.setLayoutParams(fillP);      

    gb.setOnTouchListener(Ingame.this); 
    fl.addView(gb);
    setContentView(fl); 
}

public void setupSlidingMenu() {
    sm = getSlidingMenu();
    sm.setTouchModeAbove(SlidingMenu.TOUCHMODE_NONE);
    sm.setMenu(lm.getLayout());
}

@SuppressWarnings("static-access")
@Override
public boolean onTouch(View v, MotionEvent e) {
    float distX, distY;
    switch (e.getAction()) {
        case MotionEvent.ACTION_DOWN:
            startX = e.getX();
            startY = e.getY();
            gb.movedDist.put("startX", startX);
            gb.movedDist.put("startY", startY);
            finX = finY = -1;
            gb.movedDist.put("finX", finX);
            gb.movedDist.put("finY", finY);
            break;
        case MotionEvent.ACTION_MOVE:
            finX = e.getX();
            finY = e.getY();
            distX = startX - finX;
            distY = startY - finY;
            if(!checkUnvalidValues() && (Math.abs(distX) > sh.getTSize() || Math.abs(distY) > sh.getTSize())) {
                int rectDistX = (int) (distX/sh.getTSize());
                int rectDistY = (int) (distY/sh.getTSize());
                noMove = false;
                if(!checkEdges(rectDistX, rectDistY)) {
                    animateMap.animateXYDistance(rectDistX, rectDistY);
                    startX = e.getX();
                    startY = e.getY();
                }
            }
            break;
        case MotionEvent.ACTION_UP:
            finX = e.getX();
            finY = e.getY();
            if(checkButton() == IngameButton.PP) {
                animateButton.changePPState();      
                break;
            }
            if(checkButton() == IngameButton.LEFT) { //WHERE I TRIGGER THE SLIDINGMENU
                animateButton.setLeftState(true);
                if(!animateButton.getPPState())
                    animateButton.setPPState(true);
                sm.toggle(true);
                lm.openLeftMenu();
                break;
            }

            if(noMove && !checkUnvalidValues())
                animateMap.tellCoordinate(finX, finY);
            noMove = true;
            break;
    }
    return true;
}

private boolean checkUnvalidValues() {
    if(startX <= sh.getSideSize()-1 || startX >= (sh.getScreenWidth()-sh.getSideSize()))
        return true;
    if(startY <= -1 || startY >= (sh.getScreenHeight()-sh.getBottomGUISize()))
        return true;
    if(finX <= sh.getSideSize()-1 || finX >= (sh.getScreenWidth()-sh.getSideSize()))
        return true;
    if(finY <= -1 || finY >= (sh.getScreenHeight()-sh.getBottomGUISize()))
        return true;
    return false;
}

public SlidingMenu getSM() {
    return sm;
}

public void toggleSM() {

    runOnUiThread(new Runnable() {

        @SuppressWarnings("static-access")
        @Override
        public void run(){

                getSlidingMenu().toggle(true);
                SlidingMenu sm = getSlidingMenu();
                sm.getAlpha();
            try {
                Thread.currentThread().sleep(1000);
                animateButton.setLeftState(false);
            } catch(InterruptedException e) {
                e.printStackTrace();
            }
         }
     });
}

}

编辑2：

    05-10 15:14:53.535: E/AndroidRuntime(25064): FATAL EXCEPTION: main
05-10 15:14:53.535: E/AndroidRuntime(25064): java.lang.NullPointerException
05-10 15:14:53.535: E/AndroidRuntime(25064):    at com.jeremyfeinstein.slidingmenu.lib.app.SlidingActivity.getSlidingMenu(SlidingActivity.java:104)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at me.G4meM0ment.DwarvenSkill.Ingame$1.run(Ingame.java:234)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at android.os.Handler.handleCallback(Handler.java:615)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at android.os.Handler.dispatchMessage(Handler.java:92)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at android.os.Looper.loop(Looper.java:137)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at android.app.ActivityThread.main(ActivityThread.java:4918)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at java.lang.reflect.Method.invokeNative(Native Method)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at java.lang.reflect.Method.invoke(Method.java:511)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
05-10 15:14:53.535: E/AndroidRuntime(25064):    at dalvik.system.NativeStart.main(Native Method)

StackTrace，正如我在一些评论中已经提到的，getSlidingMenu返回null，mHelper（SlidingActivityHelper）之所以会返回null，是因为它是null

getSlidingMenu().toggle(true);

必须在UI线程上运行。将其移动到内部和处理程序中，或者如果您在活动中，请使用

 runOnUiThread(new Runnable() {

     public void run(){
          getSlidingMenu().toggle(true);
      }
  });

---

stacktrace来自logcat请问？@SankarV你知道我做错了什么吗？哪是行滑动活动。java:104？它来自库：`public SlidingMenu getSlidingMenu（）{return mHelper.getSlidingMenu（）；}`我已经调试了mHelper类型的滑动活动Helper为null，它在创建这个自定义滑动活动时被初始化。仍然获得空指针，可能是因为我更改了textview的文本还是因为我使用了线性布局？因为在更改文本时，活动的边缘会消失。我可以看到从哪里获取NPE的行吗？

getSlidingMenu（）。切换（true）

getSlidingMenu（）是否返回null？似乎，我只是调试一下

 runOnUiThread(new Runnable() {

     public void run(){
          getSlidingMenu().toggle(true);
      }
  });