iOS学习笔记-环信UI3.0集成中的问题

来源：互联网发布：mac os 开机密码忘记编辑：程序博客网时间：2024/06/03 16:33

1.UserProfileManager

这里写图片描述

做为整个项目中管理用户entity的类，它封装了很多实用方法，我们可以采用原来的大部分内容，但是要把原demo中Parse相关部分注释掉，自己来完成数据从远程的读取和存储，以及如何存储在本地；

static UserProfileManager *sharedInstance = nil;@interface UserProfileManager (){    NSString *_curusername;}@property (nonatomic, strong) NSMutableDictionary *users;@property (nonatomic, strong) NSString *objectId;//@property (nonatomic, strong) PFACL *defaultACL;@end

users数组存在周期为整个APP运行时段，所以可以作为数据缓存，app退出后就释放了，当然你可以在

- (void)loadUserProfileInBackgroundWithBuddy:(NSArray*)buddyList                                saveToLoacal:(BOOL)save                                  completion:(void (^)(BOOL success, NSError *error))completion

方法里写存储到本地数据库的逻辑(FMDB)

这里我来示例一下：

- (void)loadUserProfileInBackground:(NSArray*)userInfos                       saveToLoacal:(BOOL)save                         completion:(void (^)(BOOL success, NSError *error))completion{    _users = [NSMutableDictionary dictionary];    for (NSDictionary *dic in userInfos) {        MHJUserProfileEntity *entity = [MHJUserProfileEntity initWithDictionary:dic];        [_users setObject:entity forKey:[NSString stringWithFormat:@"%@",entity.username]];//        NSLog(@"testst:%@",dic);    }    if (save) {//一般来说不用存储到本地，看个人需求了//        NSString *table = [NSString stringWithFormat:@"a%@",USERNAME];//防止以数字开头，所以加个a，数据库中表是不能以数字开头的//        FMDatabase *myUserDB = [FMDatabase databaseWithPath:UserEntityDB_Path];//        if ([myUserDB close]) {//            [myUserDB open];//        }//        //        //        BOOL delete = [myUserDB executeUpdate:DeleteTable(table)];//        if (delete) {//            NSLog(@"成功删除该用户之前entity数据表");//        }else{//            NSLog(@"删除用户表失败");//        }//        ////        //        NSString *createEntityTable = CreatTable_ForUserEntity(table);//        BOOL FactoryTable = [myUserDB executeUpdate:createEntityTable];//        if(!FactoryTable){//            NSLog(@"创建entity表失败,或许已存在表");//        }else{//            NSLog(@"创建entity表成功");//        }//        //        for (MHJUserProfileEntity *entity in _users.allValues){////            int imageID;////            if ([myDic objectForKey:UserEntity_HXInfo] && ![[myDic objectForKey:UserEntity_HXInfo] isKindOfClass:[NSNull class]] && ![[myDic objectForKey:UserEntity_HXInfo] isEqualToString:@""]) {////                NSString *jsonString = [myDic objectForKey:UserEntity_HXInfo];////                NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];////                NSError *err;////                NSDictionary *infoDic = [NSJSONSerialization JSONObjectWithData:jsonData////                                                                        options:NSJSONReadingMutableContainers////                                                                          error:&err];////                if(err) {////                    NSLog(@"json解析失败：%@",err);////                }////                ////                if ([infoDic objectForKey:UserEntity_ImageId] && ![[infoDic objectForKey:UserEntity_ImageId] isKindOfClass:[NSNull class]]) {////                    imageID = [[infoDic objectForKey:UserEntity_ImageId] intValue];////                }else{////                    imageID = 0;////                }////            }//            //            BOOL res = [myUserDB executeUpdate:InsertTable_ForUserEntity(table,entity.userId,entity.sex,entity.imageUrl,entity.email,entity.username,entity.imageID,entity.nickname,entity.describe]);//            if (!res) {//                NSLog(@"插入document数据库成功");//            }//        }//        [myUserDB close];    }    if (self.users != nil) {        if (completion) {            completion(YES,nil);        }    }    NSLog(@"缓存数据成功");}

上面的常量字符串我定义成了宏方法

#define UserEntityDB_Path [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:@"/test.db"]//判断表是否存在 - A 为表名#define ExistTable(Table) [NSString stringWithFormat:@"select count(*) as 'count' from sqlite_master where type ='table' and name = %@_Table",Table]//删除表#define DeleteTable(Table) [NSString stringWithFormat:@"delete from %@_Table",Table]//创建表#define CreatTable_ForUserEntity(Table) [NSString stringWithFormat:@"CREATE TABLE IF NOT EXISTS %@_Table (id INTEGER PRIMARY KEY,sex INTEGER,imageUrl TEXT,email TEXT,username TEXT,imageID INTEGER,usertitle TEXT,discription TEXT) ",Table]//查找表#define SelectTable_WhereUsername(Table,Username) [NSString stringWithFormat:@"SELECT * FROM %@_Table where username = %@",Table,Username]//向表中插入数据#define InsertTable_ForUserEntity(Table,A,B,C,D,E,F,G,H) [NSString stringWithFormat:@"insert into %@_Table(id,sex,imageUrl,email,username,imageID,usertitle,discription)values(%d,%d,'%@','%@','%@',%d,'%@','%@')",Table,A,B,C,D,E,F,G,H]

1.1 UserProfileEntity

在UserProfileManager里面声明了这个类，你可以自定义用户实体的属性如：

@interface UserProfileEntity : NSObject+ (instancetype)initWithPFObject:(PFObject*)object;@property (nonatomic,strong) NSString *objectId;@property (nonatomic,strong) NSString *username;@property (nonatomic,strong) NSString *nickname;@property (nonatomic,strong) NSString *imageUrl;@end