private static final int VERSION = 1; private static final String DATABASE_NAME = "Users.db"; public UserBaseHelper(Context context) { super(context, DATABASE_NAME, null, VERSION); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL("create table " + UserDbSchema.UserTable.NAME + "(" + " _id integer primary key autoincrement, " + UserDbSchema.UserTable.Cols.UUID + ", " + UserDbSchema.UserTable.Cols.USERNAME + ", " + UserDbSchema.UserTable.Cols.USERMONEY +", " + UserDbSchema.UserTable.Cols.USERDATE +", " + UserDbSchema.UserTable.Cols.USERTYPE +", " + UserDbSchema.UserTable.Cols.USERWORD + ")" ); } @Override public void onUpgrade(SQLiteDatabase db, int olds, int news) { } }这门增加超星功能
时间: 2024-02-14 20:32:55 浏览: 89
要增加超星功能,需要先了解超星的相关接口,然后在 onUpgrade 方法中添加相应的代码来实现功能。
假设要增加的超星功能是获取用户的学习进度信息,可以按照以下步骤来实现:
1. 在 UserDbSchema.UserTable 中添加一个新的字段,用于保存用户的学习进度信息:
```
public static final class Cols {
// ...
public static final String USERPROGRESS = "userprogress";
}
```
2. 在 onUpgrade 方法中执行更新操作,添加新的字段:
```
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (oldVersion == 1 && newVersion == 2) {
db.execSQL("ALTER TABLE " + UserDbSchema.UserTable.NAME + " ADD COLUMN " +
UserDbSchema.UserTable.Cols.USERPROGRESS + " TEXT");
}
}
```
这个操作会向 UserDbSchema.UserTable 表中添加一个名为 userprogress 的 TEXT 类型的字段。
3. 在代码中调用超星的接口,获取用户的学习进度信息:
```
// 创建一个 OkHttpClient 对象
OkHttpClient client = new OkHttpClient();
// 创建一个 Request 对象,指定超星接口的 URL、请求方法、请求参数等信息
Request request = new Request.Builder()
.url("http://example.com/api/user/progress")
.post(RequestBody.create(MediaType.parse("application/json"), "{}"))
.build();
// 发送请求,并获取响应结果
Response response = client.newCall(request).execute();
if (response.isSuccessful()) {
String progress = response.body().string();
// 将学习进度信息保存到数据库中
ContentValues values = new ContentValues();
values.put(UserDbSchema.UserTable.Cols.USERPROGRESS, progress);
db.update(UserDbSchema.UserTable.NAME, values, null, null);
}
```
这个操作会向超星接口发送请求,并获取学习进度信息。然后,将学习进度信息保存到数据库中。
完整的代码如下:
```
public class UserBaseHelper extends SQLiteOpenHelper {
private static final int VERSION = 2;
private static final String DATABASE_NAME = "Users.db";
public UserBaseHelper(Context context) {
super(context, DATABASE_NAME, null, VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("create table " + UserDbSchema.UserTable.NAME + "(" +
" _id integer primary key autoincrement, " +
UserDbSchema.UserTable.Cols.UUID + ", " +
UserDbSchema.UserTable.Cols.USERNAME + ", " +
UserDbSchema.UserTable.Cols.USERMONEY + ", " +
UserDbSchema.UserTable.Cols.USERDATE + ", " +
UserDbSchema.UserTable.Cols.USERTYPE + ", " +
UserDbSchema.UserTable.Cols.USERWORD + ", " +
UserDbSchema.UserTable.Cols.USERPROGRESS +
")"
);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (oldVersion == 1 && newVersion == 2) {
db.execSQL("ALTER TABLE " + UserDbSchema.UserTable.NAME + " ADD COLUMN " +
UserDbSchema.UserTable.Cols.USERPROGRESS + " TEXT");
try {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url("http://example.com/api/user/progress")
.post(RequestBody.create(MediaType.parse("application/json"), "{}"))
.build();
Response response = client.newCall(request).execute();
if (response.isSuccessful()) {
String progress = response.body().string();
ContentValues values = new ContentValues();
values.put(UserDbSchema.UserTable.Cols.USERPROGRESS, progress);
db.update(UserDbSchema.UserTable.NAME, values, null, null);
}
} catch (IOException e) {
Log.e(TAG, "Failed to get user progress", e);
}
}
}
}
```
注意,这里只是一个简单的示例,实际的超星接口可能需要更复杂的参数和认证方式,需要根据实际情况进行调整。
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