Android应用程序 - 不幸停止
我是一个初学者,正在写一个listView的代码,在OnclickListner上执行一个动作 ..但它给出错误“不幸停止”。我想在选择不同的列表项目时执行不同的操作。即时通讯新的Android开发,所以即时通讯在线基本教程。Android应用程序 - 不幸停止
我有了这个开关/箱结构:
package com.list;
import android.os.Bundle;
import android.app.ListActivity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.CheckedTextView;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends ListActivity {
final int Aatma = 0; //should be equal to the index in your array.
final int Special26 = 1;
final int Dabangg2 = 2;
String menu[] = {"Aatma","Special26","Dabangg2" };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// ListView l = (ListView)findViewById(R.id.list);
setListAdapter(new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,menu));
}
@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;
}
protected void onListItemClick(ListView l, View v, int position, long id) {
// super.onListItemClick(l, v, position, id);
CheckedTextView selectedItem = (CheckedTextView) v;
boolean isChecked = selectedItem.isChecked();
Log.e("TAG","item clicked position = " + position + " isChecked = " + isChecked);
switch (position) {
case Aatma:
Toast.makeText(this, "AAtma !", Toast.LENGTH_LONG).show();
break;
case Special26:
Toast.makeText(this, "Special26 !", Toast.LENGTH_LONG).show();
break;
case Dabangg2:
Toast.makeText(this, "Dabangg 2 !", Toast.LENGTH_LONG).show();
break;
default:
break;
}
}
}
Error Log-
04-29 18:28:21.514: W/dalvikvm(782): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
04-29 18:28:21.544: E/AndroidRuntime(782): FATAL EXCEPTION: main
04-29 18:28:21.544: E/AndroidRuntime(782): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.list/com.list.MainActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.os.Handler.dispatchMessage(Handler.java:99)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.os.Looper.loop(Looper.java:137)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.ActivityThread.main(ActivityThread.java:5041)
04-29 18:28:21.544: E/AndroidRuntime(782): at java.lang.reflect.Method.invokeNative(Native Method)
04-29 18:28:21.544: E/AndroidRuntime(782): at java.lang.reflect.Method.invoke(Method.java:511)
04-29 18:28:21.544: E/AndroidRuntime(782): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-29 18:28:21.544: E/AndroidRuntime(782): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-29 18:28:21.544: E/AndroidRuntime(782): at dalvik.system.NativeStart.main(Native Method)
04-29 18:28:21.544: E/AndroidRuntime(782): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.ListActivity.onContentChanged(ListActivity.java:243)
04-29 18:28:21.544: E/AndroidRuntime(782): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:273)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.Activity.setContentView(Activity.java:1881)
04-29 18:28:21.544: E/AndroidRuntime(782): at com.list.MainActivity.onCreate(MainActivity.java:25)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.Activity.performCreate(Activity.java:5104)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
04-29 18:28:21.544: E/AndroidRuntime(782): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
04-29 18:28:21.544: E/AndroidRuntime(782): ... 11 more
您的布局需要包含ID为android.R.id.list列表视图,像这样:
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
重要的是ID是@android:id/list,如http://developer.android.com/reference/android/app/ListActivity.html中所述(请参阅“屏幕布局”一节)。
thanx为你宝贵的回复... – chunky8666 2013-04-29 18:40:41
但我可以有一个更正代码..我已经添加ID到列表查看allready – chunky8666 2013-04-29 18:41:13
@ + ID /列表不同于@android:ID /列表。 android:id定义id为“identifier”的名称空间,它必须是android,它指的是您通常在根xml标记中定义的名称空间:xmlns:android =“http://schemas.android.com/apk/res/android“ – 2013-04-29 18:45:41
读取异常消息被证明是非常有用的:“你的内容必须有一个ListView,它的id属性是'android.R.id.list'” – CodeZombie 2013-04-29 18:36:08
这个问题很明显'引起:java.lang.RuntimeException:你的内容必须有一个ListView,其id属性是'android.R.id.list'' Google上的一分钟会找到你的答案。 – Simon 2013-04-29 18:36:37
[RuntimeException:您的内容必须具有ID属性为'android.R.id.list'的ListView](http://stackoverflow.com/questions/3040374/runtimeexception-your-content-must-have- a-listview-which-id-attribute-is-andro) – Simon 2013-04-29 18:37:14