我正在构建一个应用程序，该应用程序将显示来自我的 parse.com 应用程序的表/类“消息”中的列“NameMessage”中的值：单击“显示”按钮时调用：“ParseQueryAdapter”。单击显示按钮时没有任何反应，第二次单击显示按钮时应用程序崩溃。我还附上了logcat。请帮忙。谢谢
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import com.parse.FindCallback;
import com.parse.Parse;
import com.parse.ParseException;
import com.parse.ParseObject;
import com.parse.ParseQuery;
import com.parse.ParseQueryAdapter;
public class MainActivity extends Activity {
private ParseQueryAdapter<ParseObject> mainAdapter;
private ListView listView;
private EditText textName;
private EditText textMessage;
private Button buttonSendInfo;
public double plong;
public double plat;
private Button buttonDisplay;
ArrayList<String> messagesarray = new ArrayList<String>();
private ListView lv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Parse.initialize(this, *HIDDEN FOR SAFETY*);
textName = (EditText)findViewById(R.id.editTextName);
textMessage = (EditText)findViewById(R.id.editTextMessage);
buttonSendInfo = (Button)findViewById(R.id.buttonSend);
buttonDisplay = (Button)findViewById(R.id.toggleButton);
buttonDisplay.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
populatelist();
}
}
protected void populatelist() {
lv = (ListView) findViewById(R.id.myList);
ParseQuery<ParseObject> query = ParseQuery.getQuery("Messages");
query.findInBackground(new FindCallback<ParseObject>(){
@Override
public void done(List<ParseObject> NameMessage, ParseException e) {
if (e == null){
for(int i = 0;i<NameMessage.size();i++){
messagesarray.add(NameMessage.get(i).toString());
}
}
else {Log.d("Messages","Error:"+e.getMessage());}
}
});
ListView list = (ListView) findViewById(R.id.myList);
lv.setAdapter(new ArrayAdapter<String>(MainActivity.this,R.id.myList,R.layout.list_item,messagesarray));
}
}
日志猫：
10-14 04:53:02.205: E/AndroidRuntime(912): android.content.res.Resources$NotFoundException: Resource ID #0x7f080007 type #0x12 is not valid
10-14 04:53:02.205: E/AndroidRuntime(912): at android.content.res.Resources.loadXmlResourceParser(Resources.java:2309)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.content.res.Resources.getLayout(Resources.java:934)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.LayoutInflater.inflate(LayoutInflater.java:395)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:371)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.AbsListView.obtainView(AbsListView.java:2177)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.ListView.makeAndAddView(ListView.java:1840)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.ListView.fillDown(ListView.java:675)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.ListView.fillFromTop(ListView.java:736)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.ListView.layoutChildren(ListView.java:1655)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.AbsListView.onLayout(AbsListView.java:2012)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.View.layout(View.java:14289)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewGroup.layout(ViewGroup.java:4559)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1076)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.View.layout(View.java:14289)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewGroup.layout(ViewGroup.java:4559)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.View.layout(View.java:14289)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewGroup.layout(ViewGroup.java:4559)
10-14 04:53:02.205: E/AndroidRuntime(912): at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:349)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.View.layout(View.java:14289)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewGroup.layout(ViewGroup.java:4559)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.View.layout(View.java:14289)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewGroup.layout(ViewGroup.java:4559)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1976)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1730)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.Choreographer.doFrame(Choreographer.java:532)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.os.Handler.handleCallback(Handler.java:730)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.os.Handler.dispatchMessage(Handler.java:92)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.os.Looper.loop(Looper.java:137)
10-14 04:53:02.205: E/AndroidRuntime(912): at android.app.ActivityThread.main(ActivityThread.java:5103)
10-14 04:53:02.205: E/AndroidRuntime(912): at java.lang.reflect.Method.invokeNative(Native Method)
10-14 04:53:02.205: E/AndroidRuntime(912): at java.lang.reflect.Method.invoke(Method.java:525)
10-14 04:53:02.205: E/AndroidRuntime(912): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-14 04:53:02.205: E/AndroidRuntime(912): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-14 04:53:02.205: E/AndroidRuntime(912): at dalvik.system.NativeStart.main(Native Method)
这是我的桌子的[屏幕截图][1]。
