空指针异常，但是却没指出我代码错在哪行，帮看下 log！

[csuhanyong]

11-12 19:39:25.393: WARN/dalvikvm(2687): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): FATAL EXCEPTION: main
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): java.lang.NullPointerException
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.AbsListView.obtainView(AbsListView.java:1317)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.ListView.makeAndAddView(ListView.java:1727)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.ListView.fillDown(ListView.java:652)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.ListView.fillFromTop(ListView.java:709)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.ListView.layoutChildren(ListView.java:1580)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.AbsListView.onLayout(AbsListView.java:1147)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1249)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1125)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.LinearLayout.onLayout(LinearLayout.java:1042)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1249)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1125)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.LinearLayout.onLayout(LinearLayout.java:1042)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.View.layout(View.java:7035)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.ViewRoot.performTraversals(ViewRoot.java:1045)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.view.ViewRoot.handleMessage(ViewRoot.java:1727)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.os.Handler.dispatchMessage(Handler.java:99)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.os.Looper.loop(Looper.java:123)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at android.app.ActivityThread.main(ActivityThread.java:4627)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at java.lang.reflect.Method.invokeNative(Native Method)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at java.lang.reflect.Method.invoke(Method.java:521)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
11-12 19:39:25.454: ERROR/AndroidRuntime(2687): at dalvik.system.NativeStart.main(Native Method)

[Sodino]

楼主贴代码吧。
上面的log信息都输出都是系统组件的调用，看不出在哪儿出错了

[SmallHero007]

楼主该不是在线程中操作了UI了吧？

[freshui]

eclair 的 obtainView函数是这个， 具体对不上你的行号，不知道错在哪里

    View obtainView(int position) {
        View scrapView;

        scrapView = mRecycler.getScrapView(position);

        View child;
        if (scrapView != null) {
            if (ViewDebug.TRACE_RECYCLER) {
                ViewDebug.trace(scrapView, ViewDebug.RecyclerTraceType.RECYCLE_FROM_SCRAP_HEAP,
                        position, -1);
            }

            child = mAdapter.getView(position, scrapView, this);

            if (ViewDebug.TRACE_RECYCLER) {
                ViewDebug.trace(child, ViewDebug.RecyclerTraceType.BIND_VIEW,
                        position, getChildCount());
            }

            if (child != scrapView) {
                mRecycler.addScrapView(scrapView);
                if (mCacheColorHint != 0) {
                    child.setDrawingCacheBackgroundColor(mCacheColorHint);
                }
                if (ViewDebug.TRACE_RECYCLER) {
                    ViewDebug.trace(scrapView, ViewDebug.RecyclerTraceType.MOVE_TO_SCRAP_HEAP,
                            position, -1);
                }
            }
        } else {
            child = mAdapter.getView(position, null, this);
            if (mCacheColorHint != 0) {
                child.setDrawingCacheBackgroundColor(mCacheColorHint);
            }
            if (ViewDebug.TRACE_RECYCLER) {
                ViewDebug.trace(child, ViewDebug.RecyclerTraceType.NEW_VIEW,
                        position, getChildCount());
            }
        }

        return child;
    }

这里的child没有判断是否为null
position的传递是否跨线程了？

[wbaqoo]

在getview那最容易出现空指针的地方应该是在加载自定义布局的时候
convertView = LayoutInflater.inflate(R.layout.xxx, null);
ImageView mView = (ImageView) convertView.findViewById(R.id.xx);
你没有贴具体代码 只是给出个人见解

[csuhanyong]

我也纳闷，应该是继承的baseadapter的 getview（）方法那错了，我一点一点的排除下 看看能找出来不！[Quote=引用 1 楼 sodino 的回复:]
楼主贴代码吧。
上面的log信息都输出都是系统组件的调用，看不出在哪儿出错了
[/Quote]

[jiajie961]

贴出来的全是系统的错误，关键的应该程序的logcat信息又没贴，没法判断

[diuuuuus]

同意wbaqoo 的说法