Here is my project數據未插入到預建數據庫中
這裏我想插入一些東西到我的數據庫中。我也用this link 作爲參考,但這是徒勞的。
但這裏是我有錯誤日誌。
05-04 16:53:20.272: E/AndroidRuntime(18378): FATAL EXCEPTION: main
05-04 16:53:20.272: E/AndroidRuntime(18378): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.crews.databaseproto.activity/com.crews.databaseproto.activity.DatabaseProtoActivity}: java.lang.IllegalStateException: database not open
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.os.Handler.dispatchMessage(Handler.java:99)
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.os.Looper.loop(Looper.java:130)
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.app.ActivityThread.main(ActivityThread.java:3687)
05-04 16:53:20.272: E/AndroidRuntime(18378): at java.lang.reflect.Method.invokeNative(Native Method)
05-04 16:53:20.272: E/AndroidRuntime(18378): at java.lang.reflect.Method.invoke(Method.java:507)
05-04 16:53:20.272: E/AndroidRuntime(18378): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
05-04 16:53:20.272: E/AndroidRuntime(18378): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
05-04 16:53:20.272: E/AndroidRuntime(18378): at dalvik.system.NativeStart.main(Native Method)
05-04 16:53:20.272: E/AndroidRuntime(18378): Caused by: java.lang.IllegalStateException: database not open
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.database.sqlite.SQLiteDatabase.endTransaction(SQLiteDatabase.java:555)
05-04 16:53:20.272: E/AndroidRuntime(18378): at com.crews.databaseproto.activity.DataBaseHelper.insertData(DataBaseHelper.java:153)
05-04 16:53:20.272: E/AndroidRuntime(18378): at com.crews.databaseproto.activity.DatabaseProtoActivity.onCreate(DatabaseProtoActivity.java:37)
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-04 16:53:20.272: E/AndroidRuntime(18378): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
05-04 16:53:20.272: E/AndroidRuntime(18378): ... 11 more
在此先感謝。 對不起,我錯了鏈接
'數據庫未打開「 - 在嘗試插入數據之前是否打開了與數據庫的連接? –
是的,我做了@George看這裏myDbHelper.openDataBase(); \t \t \t myDbHelper.insertData(10,「kaushik」,「dhor sala」,22.332322332,88.2323232);在DatabaseProtoActivity中。 – kaushikSuman