在我的Android项目中,我在从数据库中检索数据时遇到了一个问题。我尝试从DB中获取像URL这样的String值,但是当此代码执行时,我收到此错误android.database.sqlite.SQLiteException: unknown error: Unable to convert BLOB to string 只有URL列会给我这个错误,而不是其他任何字符串列。
我不知道我做错了什么,所以请朋友们给我建议,我如何解决这个问题。这里也打印了我的LogCat。
谢谢。
我不知道我做错了什么,所以请朋友们给我建议,我如何解决这个问题。这里也打印了我的LogCat。
谢谢。
08-22 20:08:12.290: WARN/System.err(10844): android.database.sqlite.SQLiteException: unknown error: Unable to convert BLOB to string
08-22 20:08:12.300: WARN/System.err(10844): at android.database.CursorWindow.getString_native(Native Method)
08-22 20:08:12.300: WARN/System.err(10844): at android.database.CursorWindow.getString(CursorWindow.java:329)
08-22 20:08:12.300: WARN/System.err(10844): at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:49)
08-22 20:08:12.300: WARN/System.err(10844): at com.catLog.ProductsDetailsHomeTab.getProductDeatilsFromDB(ProductsDetailsHomeTab.java:337)
08-22 20:08:12.300: WARN/System.err(10844): at com.catLog.ProductsDetailsHomeTab.setFlipperChild1(ProductsDetailsHomeTab.java:201)
08-22 20:08:12.300: WARN/System.err(10844): at com.catLog.Widget.ViewFlipper_ProductDetails.onRightToLeftSwipe(ViewFlipper_ProductDetails.java:68)
08-22 20:08:12.300: WARN/System.err(10844): at com.catLog.Widget.ViewFlipper_ProductDetails.onTouchEvent(ViewFlipper_ProductDetails.java:131)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.View.dispatchTouchEvent(View.java:3766)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:897)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1676)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1112)
08-22 20:08:12.300: WARN/System.err(10844): at android.app.Activity.dispatchTouchEvent(Activity.java:2086)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1660)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1676)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1112)
08-22 20:08:12.300: WARN/System.err(10844): at android.app.Activity.dispatchTouchEvent(Activity.java:2086)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1660)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1676)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1112)
08-22 20:08:12.300: WARN/System.err(10844): at android.app.Activity.dispatchTouchEvent(Activity.java:2086)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1660)
08-22 20:08:12.300: WARN/System.err(10844): at android.view.ViewRoot.handleMessage(ViewRoot.java:1785)
08-22 20:08:12.300: WARN/System.err(10844): at android.os.Handler.dispatchMessage(Handler.java:99)
08-22 20:08:12.300: WARN/System.err(10844): at android.os.Looper.loop(Looper.java:123)
08-22 20:08:12.300: WARN/System.err(10844): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-22 20:08:12.300: WARN/System.err(10844): at java.lang.reflect.Method.invokeNative(Native Method)
08-22 20:08:12.300: WARN/System.err(10844): at java.lang.reflect.Method.invoke(Method.java:521)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
08-22 20:08:12.300: WARN/System.err(10844): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
08-22 20:08:12.300: WARN/System.err(10844): at dalvik.system.NativeStart.main(Native Method)