列表視圖中的不同圖標

Question

我必須創建一個列表視圖，每個項目在右側都有一個單獨的圖標。 我寫了一段代碼，但它沒有用？ 我該怎么辦？ 應用程序崩潰

碼

public class LoginMenu extends ListActivity
{

TextView maintext, subtext;
QuickContactBadge icon;

private static final String[] menuitems = { "Availability", "Messages",
"Greetings", "Address Book", "Calls", "Settings" };

@Override
protected void onCreate(Bundle savedInstanceState)
{
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.menu);
maintext = (TextView) findViewById(R.id.tvMainText);
subtext = (TextView) findViewById(R.id.tvSubText);
setListAdapter(new IconicAdapter());    
}    
class IconicAdapter extends ArrayAdapter<String>
{    
public IconicAdapter()
{
super(LoginMenu.this, R.layout.menu, R.id.tvMainText, menuitems);
// TODO Auto-generated constructor stub
}   
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
// TODO Auto-generated method stub
View row = super.getView(position, convertView, parent);
icon = (QuickContactBadge) findViewById(R.id.iContactBadge);
if (menuitems[0] != null)
{
icon.setImageResource(R.drawable.menu_availability);
}
else if (menuitems[1] != null)
{
icon.setImageResource(R.drawable.menu_messages);
}    
else if (menuitems[2] != null)
{
icon.setImageResource(R.drawable.menu_greetings);
}
else if (menuitems[3] != null)
{
icon.setImageResource(R.drawable.menu_contacts);    
}
else if (menuitems[4] != null)
{
icon.setImageResource(R.drawable.menu_calls);
}
else if (menuitems[5] != null)
{
icon.setImageResource(R.drawable.menu_settings);
}
return (row);
}    
}
}

IMAGE我的XML文件包含一個圖像，textview和另一個根據下圖排列的子文本

logcat的

10-11 04:46:15.088: E/AndroidRuntime(726): FATAL EXCEPTION: main
10-11 04:46:15.088: E/AndroidRuntime(726): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.avst.callxpressmobile/com.example.avst.callxpressmobile.MenuScreen}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.ActivityThread.access$600(ActivityThread.java:130)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.os.Handler.dispatchMessage(Handler.java:99)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.os.Looper.loop(Looper.java:137)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.ActivityThread.main(ActivityThread.java:4745)
10-11 04:46:15.088: E/AndroidRuntime(726):  at java.lang.reflect.Method.invokeNative(Native Method)
10-11 04:46:15.088: E/AndroidRuntime(726):  at java.lang.reflect.Method.invoke(Method.java:511)
10-11 04:46:15.088: E/AndroidRuntime(726):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
10-11 04:46:15.088: E/AndroidRuntime(726):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-11 04:46:15.088: E/AndroidRuntime(726):  at dalvik.system.NativeStart.main(Native Method)
10-11 04:46:15.088: E/AndroidRuntime(726): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.ListActivity.onContentChanged(ListActivity.java:243)
10-11 04:46:15.088: E/AndroidRuntime(726):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:259)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.Activity.setContentView(Activity.java:1867)
10-11 04:46:15.088: E/AndroidRuntime(726):  at com.example.avst.callxpressmobile.MenuScreen.onCreate(MenuScreen.java:22)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.Activity.performCreate(Activity.java:5008)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
10-11 04:46:15.088: E/AndroidRuntime(726):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
10-11 04:46:15.088: E/AndroidRuntime(726):  ... 11 more

Answer 1

你可以在這里獲得簡單的代碼，它在列表的每一行顯示一個圖像和一些文本：

http://www.mkyong.com/android/android-listview-example/

但是如果行數很高，並且如果要從服務器獲取每行中的圖像，那么最好使用它：

https://github.com/thest1/LazyList

Answer 2

只需使用包含行詳細信息（圖像，兩個文本）的HashMap<String,String> 。 請參閱此鏈接 ，以幫助您實現您想要的目標。

Answer 3

下面的一些鏈接對你來說對你來說是相同的代碼....

http://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/

http://wptrafficanalyzer.in/blog/listview-with-images-and-text-using-simple-adapter-in-android/

http://android-example-code.blogspot.in/p/dynamic-custoized-list-view-in-android.html

http://www.softwarepassion.com/android-series-custom-listview-items-and-adapters/

要么

   if (menuitems[0] != null) {
              if(menuitems[0].equalsIgnoreCase("Availability")
                {
                    icon.setImageResource(R.drawable.menu_availability);
                 // Set your another textview and another subtext here....
                 }
         } 
  // Set another conditions also as per above code

謝謝

Answer 4

引起：java.lang.RuntimeException：您的內容必須具有一個ListView，其id屬性為'android.R.id.list'

您正在使用ListActivity並設置內容setContentView() 。 ListActivity默認具有ListView ，不需要xml布局。 但是，如果要提供xml布局，則布局必須具有ID設置為@android:id/list的ListView元素。

關於內容，您可以隨時在Menu膨脹menu.xml並將其用作數據陣列。 幸運的是，每個MenuItem都有一個標題和圖標。 Menu也有size()和getItem()方法。