我想通过点击带有随机用户输入项的按钮来填充ListView。
这是我的activity_main.xml
的示例图片http://s1.directupload.net/file/d/3109/x6qnnj5s_png.htm
我尝试从此处和其他网站获取severel代码段，但每次我的虚拟设备都显示应用程序test_1（进程com.example.test_1）意外停止。好心的再试一次。
我目前的代码是：
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<ListView
android:id="@+id/tPlanView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/addTplan" >
</ListView>
<Button
android:id="@+id/addTplan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:text="Button" />
list_item.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<EditText
android:id="@+id/textIn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
<TextView
android:id="@+id/textOut"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
/>
MainActivity.java
public class MainActivity extends ListActivity {
/** Items entered by the user is stored in this ArrayList variable */
ArrayList<String> list = new ArrayList<String>();
/** Declaring an ArrayAdapter to set items to ListView */
ArrayAdapter<String> adapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/** Setting a custom layout for the list activity */
setContentView(R.layout.activity_main);
/** Reference to the button of the layout main.xml */
Button btn = (Button) findViewById(R.id.addTplan);
/** Defining the ArrayAdapter to set items to ListView */
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
/** Setting the event listener for the add button */
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
EditText edit = (EditText) findViewById(R.id.textIn);
list.add(edit.getText().toString());
edit.setText("");
adapter.notifyDataSetChanged();
}
});
/** Setting the adapter to the ListView */
setListAdapter(adapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
我很高兴得到任何帮助。 非常感谢allready： - ）
-------更新------
logcat的
12-19 22:45:02.854: D/AndroidRuntime(330): Shutting down VM
12-19 22:45:02.854: W/dalvikvm(330): threadid=1: thread exiting with uncaught exception (group=0x40015560)
12-19 22:45:02.864: E/AndroidRuntime(330): FATAL EXCEPTION: main
12-19 22:45:02.864: E/AndroidRuntime(330): java.lang.RuntimeException: Unable to start activity ComponentInfo{ de.example.test_1test_1/ de.example.test_1.MainActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.os.Handler.dispatchMessage(Handler.java:99)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.os.Looper.loop(Looper.java:123)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.ActivityThread.main(ActivityThread.java:3683)
12-19 22:45:02.864: E/AndroidRuntime(330): at java.lang.reflect.Method.invokeNative(Native Method)
12-19 22:45:02.864: E/AndroidRuntime(330): at java.lang.reflect.Method.invoke(Method.java:507)
12-19 22:45:02.864: E/AndroidRuntime(330): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-19 22:45:02.864: E/AndroidRuntime(330): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-19 22:45:02.864: E/AndroidRuntime(330): at dalvik.system.NativeStart.main(Native Method)
12-19 22:45:02.864: E/AndroidRuntime(330): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.ListActivity.onContentChanged(ListActivity.java:243)
12-19 22:45:02.864: E/AndroidRuntime(330): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:210)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.Activity.setContentView(Activity.java:1657)
12-19 22:45:02.864: E/AndroidRuntime(330): at de.example.test_1.MainActivity.onCreate(MainActivity.java:33)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-19 22:45:02.864: E/AndroidRuntime(330): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
12-19 22:45:02.864: E/AndroidRuntime(330): ... 11 more
12-19 22:45:05.964: I/Process(330): Sending signal. PID: 330 SIG: 9
答案 0 :(得分：2)
如果您要使用extends ListActivity，则主要布局中的ListView必须使用此ID进行编写：
<ListView
android:id="@android:id/list" <---------
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/addTplan" >
</ListView>
至于主要问题调查，也许您会发现以下问题的答案很有用，因为它涵盖了相同的主题。
答案 1 :(得分：1)
更改
<ListView
android:id="@+id/tPlanView"
到
<ListView
android:id="@android:id/list"