java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.mymail/com.example.mymail.FeedbackShow}: android.database.sqlite.SQLiteException: no such table: feedbacklist (code 1): , while compiling: SELECT _id, fcontent, fstar FROM feedbacklist ORDER BY _id。。
关键代码如下
public DbHelper(Context context) {
this(context,DATANAME, VERSION);
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
System.out.println("create a Database");
db.execSQL("create table contantslist(_id INTEGER PRIMARY KEY AUTOINCREMENT,username varchar(20),address varchar(20))");
db.execSQL("create table feedbacklist(_id INTEGER PRIMARY KEY AUTOINCREMENT,fcontent varchar(250),fstar float(10))");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
onCreate(db);
}
、、、、、、、、
DbHelper dbh=new DbHelper(FeedbackShow.this);
db=dbh.getReadableDatabase();
cursor=db.query("feedbacklist",new String[]{"_id","fcontent","fstar"},null, null, null, null,"_id");
运行游标之前还可以,加上游标语句之后就不行,不知道如何是好了,着急啊,求解救啊