由於適配器導致應用程序崩潰

自上週以來，我在Listview中顯示Facebook好友列表數據時出現問題，我無法弄清楚。我嘗試了很多方法來做到這一點，但不幸的是它沒有成功。朋友列表顯示在logcat中，但是當我想在ListView中顯示它時，應用程序崩潰。空指針異常錯誤和其他一些運行時錯誤發生由於適配器導致應用程序崩潰

能幫我解決這個問題，請
我只想從循環下面顯示朋友在ListView的信息是我的代碼

public class About extends Activity { 
public ArrayList<String> values; 

    ListView listViewPhoneBook; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.phone_book); 
     values = new ArrayList<String>(); 
     getfriends(); 
     // Log.d("All Data",values.toString()); 
     ListView listViewPhoneBook=(ListView)findViewById(R.id.listPhoneBook); 

      ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.each_contact, values); 
      listViewPhoneBook.setAdapter(adapter); 
      adapter.notifyDataSetChanged();} 

public void getfriends(){ 
Request.executeMyFriendsRequestAsync((Session)MainActivity.fbSession , new Request.GraphUserListCallback() { 


    @Override 
     public void onCompleted(List<GraphUser> users, Response response) { 
      for (int i = 0; i < users.size(); i++) { 
       values.add(users.get(i).getName()); 
      } 
      Log.d("All Data1",values.toString()); 
     } 
    }); 
} 
}

logcat的

03-20 14:18:28.156: E/ArrayAdapter(21885): You must supply a resource ID for a TextView 
03-20 14:18:28.169: E/AndroidRuntime(21885): FATAL EXCEPTION: main 
03-20 14:18:28.169: E/AndroidRuntime(21885): java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.AbsListView.obtainView(AbsListView.java:2088) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.ListView.measureHeightOfChildren(ListView.java:1249) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.ListView.onMeasure(ListView.java:1160) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.View.measure(View.java:12773) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4788) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1374) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1022) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.LinearLayout.onMeasure(LinearLayout.java:555) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.View.measure(View.java:12773) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4788) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.View.measure(View.java:12773) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.LinearLayout.measureVertical(LinearLayout.java:815) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.View.measure(View.java:12773) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4788) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2108) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.View.measure(View.java:12773) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1147) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2642) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.os.Looper.loop(Looper.java:137) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.app.ActivityThread.main(ActivityThread.java:4666) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at java.lang.reflect.Method.invokeNative(Native Method) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at java.lang.reflect.Method.invoke(Method.java:511) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576) 
03-20 14:18:28.169: E/AndroidRuntime(21885): at dalvik.system.NativeStart.main(Native Method) 
03-20 14:18:28.169: E/AndroidRuntime(21885): Caused by: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.TextView 
03-20 14:18:28.169: E/AndroidRuntime(21885): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:379) 
03-20 14:18:28.169: E/AndroidRuntime(21885): ... 30 more

來源

2013-03-20 Saad

你能告訴我們你的logcat的？ – 2013-03-20 08:15:14

@Saad歡迎來到stackoverflow，你也應該發佈你的錯誤日誌，以便我們能夠理解問題併爲你提供幫助。 – 2013-03-20 08:15:20

我編輯了我的問題，logcat被粘貼 – Saad 2013-03-20 08:22:14

把

values = new ArrayList<String>(); 
getfriends();

和

for (int i = 0; i < users.size(); i++) { 
    values.add(users.get(i).getName()); 
    Log.d("FRIENDSNAME", users.get(i).getName()); 
}

編輯：最後的代碼

使用此代碼

public class About extends Activity { 

/*private String[] values;*/ 
public ArrayList<String> values; 
    //private ActivityList listAdapter; 

    ListView listViewPhoneBook; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.phone_book); 
     values = new ArrayList<String>(); 
     listViewPhoneBook=(ListView)findViewById(R.id.listPhoneBook); 
     getfriends(); 
     // Log.d("All Data",values.toString()); 

} 


public void updateList() 
{ 
      ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.each_contact, values); 
      listViewPhoneBook.setAdapter(adapter); 
      adapter.notifyDataSetChanged(); 
} 


public void getfriends() 
{ 
Request.executeMyFriendsRequestAsync((Session)MainActivity.fbSession , new Request.GraphUserListCallback() { 


    @Override 
     public void onCompleted(List<GraphUser> users, Response response) { 
     /*values = new String[users.size()];*/ 

      for (int i = 0; i < users.size(); i++) { 
       // values[i] = users.get(i).getName(); 
       values.add(users.get(i).getName()); 
       /* Log.d("FRIENDSNAME", users.get(i).getName());*/ 

      } 
      Log.d("All Data1",values.toString()); 
      updateList(); 
     } 
    }); 
}

來源

2013-03-20 08:21:39 Naveen

由於適配器導致應用程序崩潰

回答

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