以下是源码
import java.util.List;
import java.util.zip.Inflater;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
public class AdapterPerson extends ArrayAdapter<NewPerson> {
Context context;
List<NewPerson> persons;
int res;
public AdapterPerson(Context context, int resource, List<NewPerson> objects) {
super(context, resource, objects);
context = this.context;
persons = objects;
res = resource;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
NewPerson person = getItem(position);
Holder holder;
if(convertView == null){
convertView = View.inflate(context, res, null); //就是这一行在报错空指针异常,但是我死活看不出哪里有空指针异常啊,资源文件也是能链接过去的
holder = new Holder();
holder.age = (TextView) convertView.findViewById(R.id.age);
holder.name = (TextView) convertView.findViewById(R.id.name);
holder.sex = (TextView) convertView.findViewById(R.id.sex);
holder.info = (TextView) convertView.findViewById(R.id.info);
convertView.setTag(holder);
}else{
holder = (Holder)convertView.getTag();
}
holder.name.setText(person.getName());
holder.age.setText(person.getAge());
holder.info.setText(person.getInfo());
return convertView;
}
private static class Holder {
TextView name, age, sex, info;
}
}
01-17 07:57:48.636: E/AndroidRuntime(17863): FATAL EXCEPTION: main
01-17 07:57:48.636: E/AndroidRuntime(17863): Process: com.sz.sqlitedemo1, PID: 17863
01-17 07:57:48.636: E/AndroidRuntime(17863): java.lang.NullPointerException
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.LayoutInflater.from(LayoutInflater.java:211)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.View.inflate(View.java:18048)
01-17 07:57:48.636: E/AndroidRuntime(17863): at com.sz.sqlitedemo1.AdapterPerson.getView(AdapterPerson.java:42)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.AbsListView.obtainView(AbsListView.java:3065)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.ListView.makeAndAddView(ListView.java:2125)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.ListView.fillDown(ListView.java:940)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.ListView.fillFromTop(ListView.java:1025)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.ListView.layoutChildren(ListView.java:1949)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.AbsListView.onLayout(AbsListView.java:2897)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.View.layout(View.java:15348)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewGroup.layout(ViewGroup.java:4662)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.View.layout(View.java:15348)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewGroup.layout(ViewGroup.java:4662)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1055)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.View.layout(View.java:15348)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewGroup.layout(ViewGroup.java:4662)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.View.layout(View.java:15348)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewGroup.layout(ViewGroup.java:4662)
01-17 07:57:48.636: E/AndroidRuntime(17863): at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:413)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.View.layout(View.java:15348)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewGroup.layout(ViewGroup.java:4662)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.View.layout(View.java:15348)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewGroup.layout(ViewGroup.java:4662)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2355)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2066)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1060)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6175)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.Choreographer.doCallbacks(Choreographer.java:580)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.Choreographer.doFrame(Choreographer.java:550)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.os.Handler.handleCallback(Handler.java:733)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.os.Handler.dispatchMessage(Handler.java:95)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.os.Looper.loop(Looper.java:136)
01-17 07:57:48.636: E/AndroidRuntime(17863): at android.app.ActivityThread.main(ActivityThread.java:5054)
01-17 07:57:48.636: E/AndroidRuntime(17863): at java.lang.reflect.Method.invokeNative(Native Method)
01-17 07:57:48.636: E/AndroidRuntime(17863): at java.lang.reflect.Method.invoke(Method.java:515)
01-17 07:57:48.636: E/AndroidRuntime(17863): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
01-17 07:57:48.636: E/AndroidRuntime(17863): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
01-17 07:57:48.636: E/AndroidRuntime(17863): at dalvik.system.NativeStart.main(Native Method)