java - Android:Array Adapter 和 ListView，抛出一些奇怪的引用错误？

Question

我正在尝试创建一个自定义消息应用程序。只是一些基本的东西，但我遇到了一些我从未听说过的错误。我花了两天时间才修复它，所以我想我会打扰你们。这是代码:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ListView messages = (ListView) findViewById(R.id.messages);
    msgList = getSMS(); 
    for(int i = 0; i<msgList.size(); i++) {
        System.out.println(msgList.get(i));
    }
    adapter = new ArrayAdapter<String>(MainActivity.this, 0, R.layout.list_item, msgList);
    **messages.setAdapter(adapter);**
    messages.setOnItemClickListener(new OnItemClickListener()
    {
        public void onItemClick(AdapterView<?> parent, View view, int pos,long id) 
        {
               SmsManager m = SmsManager.getDefault();
               String destinationNumber=(String) ((TextView) view).getText();              
               m.sendTextMessage(destinationNumber, null, destinationNumber, null, null);
        }           
   });
}

public List<String> getSMS() {      
    List<String> messages = new ArrayList<String>();
    Uri uri = Uri.parse("content://sms/inbox");
    Cursor c = null;
    try{
        c = getApplicationContext().getContentResolver().query(uri, null, null ,null,null); 
    }catch(Exception e){
        e.printStackTrace();
    }
    try{
        for (boolean hasData = c.moveToFirst(); hasData; hasData = c.moveToNext()) {
            final String address = c.getString(c.getColumnIndex("address"));
            final String body = c.getString(c.getColumnIndexOrThrow("body"));
            messages.add("Number: " + address + ". Message: " + body);
        }
    }catch(Exception e){
        e.printStackTrace();
    }
 c.close(); 
 return messages;
}

这是错误:

12-22 18:49:24.752: ERROR/AndroidRuntime(2054): FATAL EXCEPTION: main
12-22 18:49:24.752: ERROR/AndroidRuntime(2054): android.content.res.Resources$NotFoundException: Resource ID #0x0
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.content.res.Resources.getValue(Resources.java:892)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.content.res.Resources.loadXmlResourceParser(Resources.java:1869)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.content.res.Resources.getLayout(Resources.java:731)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.LayoutInflater.inflate(LayoutInflater.java:318)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:332)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.ArrayAdapter.getView(ArrayAdapter.java:323)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.AbsListView.obtainView(AbsListView.java:1315)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.ListView.measureHeightOfChildren(ListView.java:1198)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.ListView.onMeasure(ListView.java:1109)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.View.measure(View.java:8171)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3132)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1012)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:381)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:304)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.View.measure(View.java:8171)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3132)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.View.measure(View.java:8171)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.LinearLayout.measureVertical(LinearLayout.java:526)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.LinearLayout.onMeasure(LinearLayout.java:304)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.View.measure(View.java:8171)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3132)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.View.measure(View.java:8171)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.ViewRoot.performTraversals(ViewRoot.java:805)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1731)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.os.Handler.dispatchMessage(Handler.java:99)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.os.Looper.loop(Looper.java:123)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at android.app.ActivityThread.main(ActivityThread.java:4627)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at java.lang.reflect.Method.invokeNative(Native Method)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at java.lang.reflect.Method.invoke(Method.java:521)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
12-22 18:49:24.752: ERROR/AndroidRuntime(2054):     at dalvik.system.NativeStart.main(Native Method)

我知道在设置适配器时发生了错误，但我检查了消息是否正常检索，但我似乎找不到发生错误的位置。非常感谢任何有关错误的想法!

编辑:是的，抱歉，这是 list_item.xml。如果有帮助的话，我有一个类似的程序在 2.1 手机上运行，​​但在 2.2 手机上抛出此错误。不过，还没有在 2.1 上尝试过这个应用程序。

   <?xml version="1.0" encoding="UTF-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="15dp"
    android:textSize="22sp" >
</TextView>

Answer 1

尝试将 ArrayAdapter 构造函数行更改为:

adapter = new ArrayAdapter<String>(this, R.layout.list_item, msgList);  

在原始行中，您告诉 ArrayAdapter 膨胀 ID 为 0(不存在)的布局，然后在其中找到 ID 为 R.id.list_item 的 TextView。您的 TextView 没有设置 ID，因此您需要使用仅接受 TextView 资源 ID 的构造函数。您将用于更复杂的 ListView 项目的另一个构造函数，其中可能有多个 View 。

或者，您可以为 TextView 提供一个 ID，例如“@+id/text”，然后使用:

adapter = new ArrayAdapter<String>(this, R.layout.list_item, R.id.text, msgList);