Question

我的问题是开始新的活动。我有ListView，其中的项目是通过以下代码从字符串数组中定义的：

listBanksUA = getResources().getStringArray(R.array.list_banks_ua);
setListAdapter(new ArrayAdapter<String(this,android.R.layout.simple_list_item_1,listBanksUA));

列表在布局中定义为：

<ListView android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:drawSelectorOnTop="false"/>

所以，我想在点击ListView的项目后开始新的活动。当然，我已经创建了新的XML布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">


<ListView
android:id="@+id/listRegions"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:drawSelectorOnTop="false"/>  

</LinearLayout>

和它的Java类：ListRegionsActivity.class。在我的第一个Activity中，我使用了以下代码来启动新的Activity：

@Override
protected void onListItemClick(ListView l, View v, int position, long id) 
    {
    startActivity(new Intent(MainActivity.this,ListRegionsActivity.class));
    }

并且在点击启动应用程序后我收到错误，我的应用程序已经关闭，建议再试一次。悲伤...

所以，我真的很高兴为我提供任何帮助。顺便说一句：当然，我在清单文件中添加了新活动。

UPD：带有错误标志的LogCAT

08-15 13:46:45.458: ERROR/AndroidRuntime(516): Uncaught handler: thread main exiting due to uncaught exception
08-15 13:46:45.488: ERROR/AndroidRuntime(516): java.lang.RuntimeException: Unable to start activity ComponentInfo{ua.donetsk.jeston.android/ua.donetsk.jeston.android.ListRegionsActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.ActivityThread.access$2100(ActivityThread.java:116)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.os.Looper.loop(Looper.java:123)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.ActivityThread.main(ActivityThread.java:4203)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at java.lang.reflect.Method.invokeNative(Native Method)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at java.lang.reflect.Method.invoke(Method.java:521)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at dalvik.system.NativeStart.main(Native Method)
08-15 13:46:45.488: ERROR/AndroidRuntime(516): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.ListActivity.onContentChanged(ListActivity.java:236)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:316)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.Activity.setContentView(Activity.java:1620)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at ua.donetsk.jeston.android.ListRegionsActivity.onCreate(ListRegionsActivity.java:15)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
08-15 13:46:45.488: ERROR/AndroidRuntime(516):     ... 11 more

UPD：问题解决了。原因是打开avtivity时出现错误错误 - 应该删除setContentView。

Answer 1

由于您没有向我们展示LogCat跟踪，我可以做猜测。

在ListView点击监听器

中尝试此操作

MainActivity.this.startActivity(new Intent(MainActivity.this,ListRegionsActivity.class))

并且不要忘记在清单中添加新活动。

Answer 2

检查您是不是在应用中导入android.R而不是your.package.R

启动新活动时LogCATError

2 个答案: