getDatabase在我的DbHelper类的oCreate中插入记录时递归调用
getDatabase在我的DbHelper类的oCreate中插入记录时递归调用
提问于 2013-11-10 11:22:37
当我试图在从onCreate扩展的DbHelper类的DbHelper方法中插入一个记录时，这个错误将上升。
我发现了一些类似的话题，如：
Android getDatabase called recursively
getWritableDatabase called recursively
getDatabase called recursively，但这些都帮不了我。
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);
}
}当这一行代码想要执行时，将引发错误：
insert("settings", cv);日志猫：
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？
回答 1
Stack Overflow用户
回答已采纳
发布于 2013-11-10 11:24:26
您似乎有一个自定义的insert()方法。它可能调用getWritableDatabase()，后者调用getDatabase()，并且它将抛出此异常，因为onCreate()已经在getDatabase()上下文中被调用。只需直接使用db.insert()，db是传递给onCreate()的SQLiteDatabase对象，而不调用getWritableDatabase()。这与你所联系的所有三个问题的问题和解决方案本质上是相同的。
以前，您的问题还有另一个先前的问题，解决方案如下，上面的insert()修复包括：
您的表没有您在ContentValues中指定的列名。
只有name和value列在CREATE TABLE settings中指定，但是您试图将数据插入Username、Password和personId列中。
记录完整的异常堆栈跟踪(不仅仅是消息)以及在任何地方记录异常都是有用的。
如果我正确理解了您的意图，您需要三行名称-值对，如下所示：
ContentValues cv = new ContentValues();
cv.put("name", "Username");
cv.put("value", "");
db.insert("settings", cv);
cv.clear();
cv.put("name", "Password");
cv.put("value", "");
db.insert("settings", cv);
cv.clear();
cv.put("name", "personId");
cv.put("value", "");
db.insert("settings", cv);或具有单行和给定列的表：
sql = "CREATE TABLE IF NOT EXISTS settings (Username text,Password text,personId)";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/19889103
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