如何从数据库中获取选定的值

Question

我只想选择表单数据库中的值取决于i和j？

public Cursor getAll() { 
     int i=2;j=1; 
      return (getReadableDatabase().rawQuery(
         "SELECT _id,note,answer From Notes where _id=? AND note=?",new String[]{i+""},new String[]{j+""})); 
     } 

Answer 1

试试这个。

public Cursor getAll() { 
    int i=2; 
    return (getReadableDatabase().rawQuery(
       "SELECT _id,note,answer From Notes where _id=? ",new String[]{i+""})); 
} 

对于多个参数...

public Cursor getAll() { 
    int i=2;j=1; 
     return (getReadableDatabase().rawQuery(
        "SELECT _id,note,answer From Notes where _id=? AND note=?",new String[]{i+"", j+""})); 
    }