21
我有一个问题,使用MatrixCursor
来填充我的ListView
:在ListView中使用带有文本和图像的MatrixCursor和SimpleCursorAdapter
private void fillData() {
String[] menuCols = new String[] { "icon", "item", "price" };
int[] to = new int[] { R.id.icon, R.id.item, R.id.price };
MatrixCursor menuCursor = new MatrixCursor(menuCols);
startManagingCursor(menuCursor);
menuCursor.addRow(new Object[] { R.drawable.chicken_sandwich, "Chicken Sandwich", "$3.99" });
SimpleCursorAdapter menuItems = new SimpleCursorAdapter(
this, R.layout.menu_row, menuCursor, menuCols, to);
setListAdapter(menuItems);
}
构造SimpleCursorAdapter
会导致崩溃。即使我尝试删除图标,应用程序仍然崩溃。这是我的menu_row.xml
:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<ImageView
android:id="@+id/icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</ImageView>
<TextView
android:id="@+id/item"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
<TextView
android:id="@+id/price"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
</LinearLayout>
编辑:这是崩溃时的调用堆栈:
Thread [<3> main] (Suspended (exception RuntimeException))
ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2481
ActivityThread.handleLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2497
ActivityThread.access$2200(ActivityThread, ActivityThread$ActivityRecord, Intent) line: 119
ActivityThread$H.handleMessage(Message) line: 1848
ActivityThread$H(Handler).dispatchMessage(Message) line: 99
Looper.loop() line: 123
ActivityThread.main(String[]) line: 4338
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 521
ZygoteInit$MethodAndArgsCaller.run() line: 860
ZygoteInit.main(String[]) line: 618
NativeStart.main(String[]) line: not available [native method]
解决方案:
我发现问题和解决方案在我的答案下面。
当您发生崩溃时,您可以查看堆栈跟踪以帮助找出问题所在 - 在Eclipse中使用adb logcat,DDMS或DDMS透视图。如果这不能为解决问题提供足够的帮助,请将堆栈跟踪作为对问题的编辑,因为它可能会给我们一些线索。 – CommonsWare 2009-12-10 17:55:57
优秀的问题...我希望我两周前找到了!感谢您的示例代码。做得好!! – mobibob 2010-09-16 16:08:11