Android 不幸的是，（应用程序名称）已停止

我能够成功编译、构建和安装该项目。当我点击一个按钮时，应用程序显示：不幸的是，它已经停止了。你能帮我弄清楚吗

01-23 20:51:58.672: W/dalvikvm(1946): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
01-23 20:51:58.722: E/AndroidRuntime(1946): FATAL EXCEPTION: main
01-23 20:51:58.722: E/AndroidRuntime(1946): java.lang.NullPointerException
01-23 20:51:58.722: E/AndroidRuntime(1946):     at com.Divani.Marzieh.CustomlistActivity.getView(CustomlistActivity.java:32)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.AbsListView.obtainView(AbsListView.java:2033)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.ListView.measureHeightOfChildren(ListView.java:1244)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.ListView.onMeasure(ListView.java:1155)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.View.measure(View.java:12723)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:660)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.View.measure(View.java:12723)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.View.measure(View.java:12723)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.View.measure(View.java:12723)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.View.measure(View.java:12723)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:812)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.View.measure(View.java:12723)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2092)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.View.measure(View.java:12723)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1064)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.os.Handler.dispatchMessage(Handler.java:99)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.os.Looper.loop(Looper.java:137)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at android.app.ActivityThread.main(ActivityThread.java:4424)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at java.lang.reflect.Method.invokeNative(Native Method)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at java.lang.reflect.Method.invoke(Method.java:511)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-23 20:51:58.722: E/AndroidRuntime(1946):     at dalvik.system.NativeStart.main(Native Method)

这是CustomListActivity代码：

class CustomlistActivity extends ArrayAdapter<Item>{
    ArrayList<Item> strings;
    public CustomlistActivity( Context context, int resource, int textViewResourceId, ArrayList<Item> string) {
        super(context, resource, textViewResourceId, string);
            strings = string; 
    }
    @Override
    public View getView(int position,View convertView,ViewGroup parent){
        LayoutInflater inflater  = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View row = inflater.inflate(R.layout.list_item, parent ,false);
        ImageView iv = (ImageView) row.findViewById(R.id.imageView1);
        TextView tv = (TextView) row.findViewById(R.id.textView1);
        Item item = strings.get(position);
        iv.setImageResource(item.image);
        tv.setText(item.name);
        return row;
    }
    private LayoutInflater getSystemService(String layoutInflaterService) {
        return null;
    }
}

类CustomlistActivity扩展了ArrayAdapter{
数组列表字符串；
公共CustomlistActivity（上下文上下文、int-resource、int-textViewResourceId、ArrayList字符串）{
super（上下文、资源、textViewResourceId、字符串）；
字符串=字符串；
}
@凌驾
公共视图getView（int位置、视图转换视图、视图组父视图）{
LayoutFlater充气器=（LayoutFlater）getSystemService（Context.LAYOUT\u充气器\u服务）；
视图行=充气机。充气（R.layout.list\u项，父项，false）；
ImageView iv=（ImageView）row.findViewById（R.id.imageView1）；
TextView tv=（TextView）row.findViewById（R.id.textView1）；
Item=strings.get（位置）；
iv.setImageResource（项目图像）；
tv.setText（项目名称）；
返回行；
}
私有LayoutInflater getSystemService（字符串layoutInflaterService）{
返回null；
}
}

getSystemService

需要一个上下文

因此，请按如下所示更改代码

Context context;
public CustomlistActivity( Context context, int resource, int textViewResourceId,
            ArrayList<Item> string) {
        super(context, resource, textViewResourceId, string);
        // TODO Auto-generated constructor stub
        strings = string; 
        this.context = context;
    }

移除

 private LayoutInflater getSystemService(String layoutInflaterService) {
    // TODO Auto-generated method stub
    return null;
    }

也考虑使用<代码> ViewHolder <代码>模式

---

发布相关代码并指出第32行

CustomlistActivity.java

。您还需要发布代码。当我们没有代码时，调试代码很困难…@csmckelvey有些人认为不可能；我认为他们是悲观的。@Poldie我必须同意：）多谢了，问题解决了：）@user322884然后点击菜单旁边的勾号接受答案answer@user3228884从你的新书开始读吧

 private LayoutInflater getSystemService(String layoutInflaterService) {
    // TODO Auto-generated method stub
    return null;
    }