大家好,所以这是我的问题,我需要能够访问创建的行的唯一ID,因为我创建了第二个将通过ID“连接”的表。然而,这是我的问题,每当我尝试调用此方法时,我的应用程序崩溃..我希望社区可以帮助我在这里。非常感谢。
public void addExerciseToDatabase(Exercises exercises){
SQLiteDatabase db = myDBHelper.getWritableDatabase();
ContentValues values = new ContentValues();
ContentValues nuValues = new ContentValues();
values.put(myDBHelper.COLUMN_BODYPARTNAME, exercises.get_bodyPart());
values.put(myDBHelper.COLUMN_EXERCISENAME, exercises.get_exerciseName());
long ID = db.insert(myDBHelper.TABLE_EXERCISES, null, values);
//FOR THE NEW TABLE VALUES
nuValues.put(myDBHelper.COLUMN_EXERCISENAME_ID, ID);
nuValues.put(myDBHelper.COLUMN_NUMSETS, exercises.get_numSets());
nuValues.put(myDBHelper.COLUMN_NUMWEIGHT, exercises.get_numWeight());
nuValues.put(myDBHelper.COLUMN_NUMREPS, exercises.get_numReps());
db.insert(myDBHelper.TABLE_EXERCISES_VALUE, null, nuValues);
db.close();
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
THIS method returns the EXERCISE ID, that corresponds to the exercise
passed and Bodypart passed
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
public int getExerciseID(String exercise, String bodyPart) {
SQLiteDatabase db = myDBHelper.getWritableDatabase();
String query = "SELECT " + myDBHelper.COLUMN_ID + " FROM " + myDBHelper.TABLE_EXERCISES + " WHERE " +
myDBHelper.COLUMN_BODYPARTNAME + " = " + bodyPart + " AND " +
myDBHelper.COLUMN_EXERCISENAME + " = " + exercise ;
Cursor c = db.rawQuery(query, null);
c.moveToFirst();
int exerciseID = Integer.parseInt(c.getString(0));
/*int exerciseID = c.getInt(c.getColumnIndex(myDBHelper.COLUMN_ID));*/
c.close();
db.close();
return exerciseID;
}
HERES MY TABLE:
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_NAME = "exercises.db";
public static final String TABLE_EXERCISES = "exercises";
public static final String TABLE_EXERCISES_VALUE = "exercises_value";
public static final String COLUMN_ID = "_id";
public static final String COLUMN_BODYPARTNAME = "bodypartname";
public static final String COLUMN_EXERCISENAME = "exercisename";
public static final String COLUMN_EXERCISENAME_ID = "exerciseid";
public static final String COLUMN_NUMSETS = "numsets";
public static final String COLUMN_NUMWEIGHT = "numweight";
public static final String COLUMN_NUMREPS = "numreps";
public void onCreate(SQLiteDatabase db) {
String query = "CREATE TABLE " + TABLE_EXERCISES + "(" +
COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
COLUMN_BODYPARTNAME + " TEXT NOT NULL," +
COLUMN_EXERCISENAME + " TEXT NOT NULL" +
");";
db.execSQL(query);
query = "CREATE TABLE " + TABLE_EXERCISES_VALUE + "(" +
COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
COLUMN_EXERCISENAME_ID + " INTEGER NOT NULL," +
COLUMN_NUMSETS + " INTEGER NOT NULL," +
COLUMN_NUMWEIGHT + " INTEGER NOT NULL," +
COLUMN_NUMREPS + " INTEGER NOT NULL" +
");";
db.execSQL(query);
}
答案 0 :(得分:0)
更新您的查询,因为您的查询在SELECT和FROM
中不包含空格String query = "SELECT " + myDBHelper.COLUMN_ID + " FROM " + myDBHelper.TABLE_EXERCISES + " WHERE " +
myDBHelper.COLUMN_BODYPARTNAME + " = " + bodyPart + " AND " +
myDBHelper.COLUMN_EXERCISENAME + " = " + exercise ;
你也可以发布你的logcat错误。
public int getExerciseID(String exercise, String bodyPart) {
int exerciseID = 0;
SQLiteDatabase db = myDBHelper.getWritableDatabase();
String query = "SELECT " + myDBHelper.COLUMN_ID + " FROM " + myDBHelper.TABLE_EXERCISES + " WHERE " +
myDBHelper.COLUMN_BODYPARTNAME + " = " + bodyPart + " AND " +
myDBHelper.COLUMN_EXERCISENAME + " = " + exercise ;
Cursor c = db.rawQuery(query, null);
if(c.getCount()>0){
c.moveToFirst();
exerciseID = Integer.parseInt(c.getString(0));
/*exerciseID = c.getInt(c.getColumnIndex(myDBHelper.COLUMN_ID));*/
}
c.close();
db.close();
return exerciseID;
}