使用幻灯片菜单库的Android菜单

Question

我在我的项目中使用滑动菜单库它工作得很好，但我从设备上卸载了我的应用程序并通过Eclipse再次安装它。应用程序的大小从7.92 MB减少到6.92 MB。 滑动菜单应出现在Activity中的位置，它不会打开，并且我的logcat中会出现以下错误。

logcat的

        11-17 17:58:52.241: E/AndroidRuntime(4049): FATAL EXCEPTION: main
        11-17 17:58:52.241: E/AndroidRuntime(4049): Process: com.example.sayminicabdriver, PID:   4049
        11-17 17:58:52.241: E/AndroidRuntime(4049): java.lang.RuntimeException: Unable to start                   activity ComponentInfo{com.example.sayminicabdriver/mapslider.sliding}:              java.lang.NullPointerException
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.app.ActivityThread.access$800(ActivityThread.java:135)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.os.Handler.dispatchMessage(Handler.java:102)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.os.Looper.loop(Looper.java:136)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.app.ActivityThread.main(ActivityThread.java:5001)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at java.lang.reflect.Method.invokeNative(Native Method)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at java.lang.reflect.Method.invoke(Method.java:515)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at dalvik.system.NativeStart.main(Native Method)
        11-17 17:58:52.241: E/AndroidRuntime(4049): Caused by: java.lang.NullPointerException
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.view.ViewGroup.addView(ViewGroup.java:3353)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.view.ViewGroup.addView(ViewGroup.java:3336)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at com.jeremyfeinstein.slidingmenu.lib.CustomViewAbove.setContent(CustomViewAbove.java:436)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at com.jeremyfeinstein.slidingmenu.lib.SlidingMenu.setContent(SlidingMenu.java:356)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at com.jeremyfeinstein.slidingmenu.lib.SlidingMenu.attachToActivity(SlidingMenu.java:332)     
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at com.jeremyfeinstein.slidingmenu.lib.SlidingMenu.attachToActivity(SlidingMenu.java:292)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at mapslider.sliding.onCreate(sliding.java:122)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.app.Activity.performCreate(Activity.java:5231)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
        11-17 17:58:52.241: E/AndroidRuntime(4049):     ... 11 more

之前我的代码运行良好，但突然出现了这个错误。

java代码

的

的

                      @Override
                      public void onCreate(Bundle savedInstanceState) {
                      super.onCreate(savedInstanceState);
                      setBehindContentView(R.layout.content_frame);
                      SlidingMenu menu_bus = new SlidingMenu(this);
                      SlidingMenu sm = getSlidingMenu();
                      sm.setShadowWidthRes(R.dimen.shadow_width);
                      sm.setShadowDrawable(R.drawable.shadow);
                      sm.setBehindOffsetRes(R.dimen.slidingmenu_offset);
                      sm.setFadeDegree(0.35f);
                      sm.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);

                      menu_bus.attachToActivity(this, SlidingMenu.SLIDING_CONTENT);
//firs slide menu, then second
                     getSlidingMenu().setMode(SlidingMenu.LEFT_RIGHT);
                  getSupportFragmentManager().beginTransaction().replace(R.id.content_frame, new                       MenuFragment()).commit();

        getSlidingMenu().setBehindOffset(50);                  
     //   getSupportActionBar().setDisplayShowCustomEnabled(true);
      //  getSupportActionBar().setDisplayHomeAsUpEnabled(true);        

        getSlidingMenu().setSecondaryMenu(R.layout.right_main);
        getSlidingMenu().setSecondaryShadowDrawable(R.drawable.shadowright);
//start fragment for second menu
getSupportFragmentManager()
.beginTransaction()
.add(R.id.right_container, new RightFragment(),"test_bus")
.commit();

         Button csButton=(Button)findViewById(R.id.button1);


        csButton.setOnClickListener(new OnClickListener() {


    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        getSlidingMenu().showMenu();

    }//inside csButton1 onclick listener just need to call 

});
   // inside csButton onclick listener just need to call slidingMenu.showSecondaryMenu();
     Button csButton1=(Button)findViewById(R.id.button2);
   csButton1.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

        getSlidingMenu().showSecondaryMenu();

    }
}) ;

的 提前致谢。

Answer 1

尝试清理项目并确保使用库（右键单击项目，属性）或java构建路径