android 运行不正常

Question

啊啊啊 急死我了 主Acitvity中就这几行代码
ListView list;
// Cursor cursor=null;
   
@Override
    public void onCreate(Bundle savedInstanceState) {
//Toast.makeText(this, "进入工程", Toast.LENGTH_SHORT).toString();
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);        System.out.println("输出信息");  //检验
        String[] datas=new String[]{"文科查询","理科查询"};
        list=(ListView)findViewById(R.id.list);
//        ArrayAdapter adapter=new ArrayAdapter(this,android.R.layout.select_dialog_singlechoice,datas);
//// this.getListView().setAdapter(adapter);
// System.out.println("输出信息list"); 
}但结果总出不来 总报错08-03 00:30:51.680: ERROR/AndroidRuntime(836): Uncaught handler: thread main exiting due to uncaught exception
08-03 00:30:51.709: ERROR/AndroidRuntime(836): java.lang.RuntimeException: Unable to start activity ComponentInfo{test.andorid1/test.andorid1.Activity1}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2268)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.ActivityThread.access$1800(ActivityThread.java:112)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.os.Looper.loop(Looper.java:123)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.ActivityThread.main(ActivityThread.java:3948)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at java.lang.reflect.Method.invokeNative(Native Method)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at java.lang.reflect.Method.invoke(Method.java:521)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at dalvik.system.NativeStart.main(Native Method)
08-03 00:30:51.709: ERROR/AndroidRuntime(836): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.ListActivity.onContentChanged(ListActivity.java:236)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:312)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.Activity.setContentView(Activity.java:1626)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at test.andorid1.Activity1.onCreate(Activity1.java:24)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2231)
08-03 00:30:51.709: ERROR/AndroidRuntime(836):     ... 11 more
报错说setContentView(R.layout.main)有问题 这是咋回事啊究竟！！！！

Answer 1

它已经告诉你很清楚了：
Your content must have a ListView whose id attribute is 'android.R.id.list'

Answer 2

Your content must have a ListView whose id attribute is 'android.R.id.list'
---------------------------------------------------------------------------
listView控件放上去了吗

Answer 3

放上去了 
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/bg"
    >
  
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
    
    <LinearLayout 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:background="@color/title_bg"
>
<ImageView 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:maxWidth="100dp" 
android:maxHeight="30dp" 
android:src="@drawable/logo" />
<TextView
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:layout_gravity="center_vertical" 
android:layout_marginLeft="5dp" 
android:textSize="18sp" 
android:textColor="@color/white" 
android:textStyle="bold" 
android:text="@string/app_name"/> 
</LinearLayout>

<ImageView
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:layout_gravity="center_horizontal" 
android:layout_marginTop="30dp" 
android:maxWidth="190dp" 
android:maxHeight="45dp" 
android:src="@drawable/quick"/>
<!-- content栏 -->
<ListView
android:id="@+id/list" 
android:layout_width="260dp" 
android:layout_height="wrap_content"  
android:orientation="vertical" 
android:layout_margin="10dp" 
android:layout_gravity="center_horizontal" 
android:background="@drawable/shape_block"
/>
</LinearLayout>
这是那个main.xml 最后面的是那个控件

Answer 4

list=(ListView)findViewById(R.id.list);
要不你换一个
你看这个变量叫list，
ListView控件的id也叫list，是不是冲突了

Answer 5

你多个布局，怎么没有weight属性