Question

当我尝试在从SQLiteOpenHelper扩展的DbHelper类的onCreate方法中插入记录时，此错误将会增加。
我发现了一些类似的话题：
Android getDatabase called recursively
getWritableDatabase called recursively
getDatabase called recursively 但这些对我没有帮助。

public class DbHelper extends SQLiteOpenHelper{

    public int x=0;
    public DbHelper(Context context) {
        super(context, "shareholders.db", null, 1);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        try {
            sql = "CREATE TABLE IF NOT EXISTS settings (name text,value text)";
            Log.d("Ehsan", sql);
            db.execSQL(sql);


        ContentValues cv = new ContentValues();
        cv.put("name", "Username");
        cv.put("value", "");
        insert("settings", cv);

        cv.put("name", "Password");
        cv.put("value", "");
        insert("settings", cv);

        cv.put("name", "PersonId");
        cv.put("value", "");
        insert("settings", cv);
        } catch (Exception e) {
            xLog.error(e.getMessage());
        }
    }


public long insert(String table,ContentValues cv){
    SQLiteDatabase mydb =this.getWritableDatabase();
    return mydb.insert(table,null, cv);
}

    }

当这行代码想要执行时，将引发错误：

insert("settings", cv);

Log Cat：

11-10 11:46:53.325: W/dalvikvm(19579): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
11-10 11:46:53.325: E/AndroidRuntime(19579): FATAL EXCEPTION: main
11-10 11:46:53.325: E/AndroidRuntime(19579): java.lang.IllegalStateException: Could not execute method of the activity
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.view.View$1.onClick(View.java:3599)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.view.View.performClick(View.java:4204)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.view.View$PerformClick.run(View.java:17355)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.os.Handler.handleCallback(Handler.java:725)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.os.Handler.dispatchMessage(Handler.java:92)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.os.Looper.loop(Looper.java:137)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.app.ActivityThread.main(ActivityThread.java:5041)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at java.lang.reflect.Method.invokeNative(Native Method)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at java.lang.reflect.Method.invoke(Method.java:511)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at dalvik.system.NativeStart.main(Native Method)
11-10 11:46:53.325: E/AndroidRuntime(19579): Caused by: java.lang.reflect.InvocationTargetException
11-10 11:46:53.325: E/AndroidRuntime(19579):    at java.lang.reflect.Method.invokeNative(Native Method)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at java.lang.reflect.Method.invoke(Method.java:511)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.view.View$1.onClick(View.java:3594)
11-10 11:46:53.325: E/AndroidRuntime(19579):    ... 11 more
11-10 11:46:53.325: E/AndroidRuntime(19579): Caused by: java.lang.IllegalStateException: getDatabase called recursively
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:204)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at ClassLibrary.DbHelper.insert(DbHelper.java:76)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at ClassLibrary.DbHelper.onCreate(DbHelper.java:56)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:252)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at ClassLibrary.DbHelper.insert(DbHelper.java:76)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at com.example.shareholders.entities.Person.insert(Person.java:99)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at com.example.shareholders.Sync.doSync2(Sync.java:71)
11-10 11:46:53.325: E/AndroidRuntime(19579):    at com.example.shareholders.AppMenu.clickHandler(AppMenu.java:56)
11-10 11:46:53.325: E/AndroidRuntime(19579):    ... 14 more

我该怎么办？

Answer 1

您似乎拥有自定义insert()方法。它可能会调用getWritableDatabase()调用getDatabase()，并且它会抛出此异常，因为onCreate()已在getDatabase()的上下文中调用。只需db.insert()直接使用传递给db的{{1}} SQLiteDatabase对象，而无需调用onCreate()。这与您链接的所有三个问题基本上是相同的问题和解决方案。

以前您的问题还有另一个先前的问题，解决方案如下所示，其中包含getWritableDatabase()修正案：

您的表格没有您在insert()中指定的列名。

ContentValues中只指定了name和value列，但您尝试将数据插入列CREATE TABLE settings，{{1} }和Username。

它还可用于记录完整的异常堆栈跟踪（而不仅仅是消息），并在您记录它们的任何位置读取异常。

如果我理解你的意图正确，你需要三个名称 - 值对行：

Password

或具有单行和给定列的表：

personId

在我的DbHelper类的oCreate中插入记录时，getDatabase以递归方式调用

1 个答案: