我想要检索SQlite数据并将其设置为映射markers[ForceClose]
我想要检索SQlite数据并将其设置为映射markers[ForceClose]
提问于 2011-08-23 10:51:01
我有一个SQLite DB，它存储了所有的坐标+描述，以便在标记上记录时显示它们。我使用这段代码来检索所有描述：
protected boolean onTap(int index) {
db = openHelper.getWritableDatabase();
String[] result_columns = new String[] {COL_DESCRI};
Cursor cur = db.query(true, TABLE_COORD, result_columns,
null, null, null, null, null, null);
cur.moveToFirst();
while (cur.isAfterLast() == false) {
String description = cur.getString(cur.getColumnIndexOrThrow("Description"));
AlertDialog.Builder dialog = new AlertDialog.Builder(Geo.this);
dialog.setTitle("Infos.");
dialog.setMessage(description);
dialog.setPositiveButton("OK", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
dialog.show();
cur.moveToNext();
}
cur.close();
db.close();
return true;然而，我遇到了一个奇怪的问题，它表明我没有Description列，并且我非常确定我有它。
08-23 02:45:02.848: ERROR/AndroidRuntime(287): Uncaught handler: thread main exiting due to uncaught exception
08-23 02:45:02.890: ERROR/AndroidRuntime(287): android.database.sqlite.SQLiteException: no such column: Description: , while compiling: SELECT DISTINCT Description FROM table_coordonnées
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.database.sqlite.SQLiteProgram.native_compile(Native Method)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.database.sqlite.SQLiteProgram.compile(SQLiteProgram.java:110)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:59)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:49)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:49)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1220)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1107)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1065)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at carburant.android.com.Geo$ItemizedOverlayPerso.onTap(Geo.java:239)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.google.android.maps.ItemizedOverlay.onTap(ItemizedOverlay.java:453)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.google.android.maps.OverlayBundle.onTap(OverlayBundle.java:83)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.google.android.maps.MapView$1.onSingleTapUp(MapView.java:346)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.view.GestureDetector.onTouchEvent(GestureDetector.java:506)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.google.android.maps.MapView.onTouchEvent(MapView.java:628)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.view.View.dispatchTouchEvent(View.java:3709)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:852)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.app.Activity.dispatchTouchEvent(Activity.java:2061)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.os.Handler.dispatchMessage(Handler.java:99)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.os.Looper.loop(Looper.java:123)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at android.app.ActivityThread.main(ActivityThread.java:4363)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at java.lang.reflect.Method.invokeNative(Native Method)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at java.lang.reflect.Method.invoke(Method.java:521)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
08-23 02:45:02.890: ERROR/AndroidRuntime(287): at dalvik.system.NativeStart.main(Native Method)有什么问题吗？谢谢你的帮助。
回答 2
Stack Overflow用户
回答已采纳
发布于 2011-08-23 13:29:11
请检查您的create语句和查询。我在任何地方都会使用小写。在编辑中，您可以编写coordoonnees和table_coordoonnees。两者都不匹配。
SQLites错误消息总是非常有用的。如果SQLite告诉您缺少表或列，那么这项肯定是缺少或拼写错误的。
Stack Overflow用户
发布于 2011-08-23 12:02:43
它看起来像“没有这样的列:描述”，所以你必须检查你的数据库一次，而且你也走错了方向。
您在onTap()方法中获取坐标，并在获取光标后获取循环，在循环中您已经为显示对话框编写了代码。
所以your code will give you description of only last record.
您必须为所有坐标创建描述数组，然后在onTap(int index)中您必须获得坐标using index variable of onTap(int index) method
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/7155812
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