新建一个添加好友的ViewController为AddFriendViewController 和设置class
连线text框 friendNameText
遵守<UITextFieldDlegate>
//设置文件框代理 //
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
//1.判断文本框是否输入内容 在.pch中导入 NSString+Helper.h头文件截断字符串 就不用每次都去导入头文件和LoginUser.h
NSString *name = [textField.text trimstring];
if (![name isEmptyString]){
[self addFriendWithName:name]; //2.如果输入就调用添加好友方法
}
return YES;
}
在viewDidLoad中 [_friendNameText becomeFirstResponder]; //进来就打开键盘
1. 自定义一个添加好友的方法
-(void)addFriendWithName:(NSString *)name{
//1.判断是否由域名
NSRange range = [name rangeOfString:@"@"];
if (NSNotFound == renge.location){ //2.如果没有,添加域名完整的JID字符串 在name尾部添加域名
name = [NSString stringWithFormat:@"%@@%@",name,[loginUser sharedLoginUser].hostName];
}
//3.判断是否与当前用户相同
if([name isEqualToString:[LoginUser sharedLoginUser].myJIDName]){
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"温馨提示" message:@"自已不用添加自己"
delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alert show];
return;
}
//4.判断是否已经是自己的好友
(在花名册模块 设置接收好友订阅请求
[_xmppRoster setAutoAcceptKnownPresenceSubscriptionRequests:YES];
[_xmppRoster activate:_xmppStream]; )
在文件中添加appDelegate代理头文件
因为经常写就可以定义成宏 #define xmppDelegate (AppDelegate *)[[UIApplication sharedApplication]delegate];
//5.发送添加好友请求 //双向添加
[[xmppDelegate xmppRoster] subscribePresenceToUser:[XMPPJID jidWithString:name]];
//提示用户,并返回上一级页面
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"添加好友请求已发送"
delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alert show];
}
//遵守UIAlertViewDelegate代理 点击确定后跳转页面
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
[self.navigationController popViewControllerAnimated:YES];
}
//单向添加
在AppDelegate.m中遵守协议<XMPPStreamDelegate,XMPPRosterDelegate>
在代理.m文件中 添加用户展现方法
-(void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence{
//接收用户展示数据 意思 接收用户发送添加好友消息
// 判断 接收到的presence类型是否为subscribe
if([presence.type isEqualToString:@"subscribe"]{
//2.取出presence中的from的JID
XMPPJID *from = [presence from];
//3.接受来自from添加为好友的订阅请求
[_xmppRoster subscribePresenceToUser:from];
}
}
-(void)xmppRoster:(XMPPRoster *)sender didReceivePresenceSubscriptionRequest:(XMPPPresence *)presence{
//接收到其它用户的请求
}
// 表格代理方法、允许表格滑动删除 1、 实现tableView:canEditRowAtIndexPath:方法,允许表格边界
-(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{ return YES;}
-(void)tableView:UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{//2.提交编辑状态
if(UITableViewCellEditingStyleDelegate == editingStyle){
//删除数据 在OC开发中,是MVC架构,数据是绑定到表格,如果要删除表格中的数据,应该先删除数据,再刷新表格
XMPPUserCoreDataStorageObject *user = [_fetchedResultsController objectAtIndexPath:indexPath];
//提示用户
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"是否删除好友" message:user.jidStr
delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
_removedIndexPath = indexPath; //记录要删除表格的索引
[alert show];
}
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
//删除好友
if (1 == buttonIndex){
//用indexPathForSelectedRow是获取不到被删除的行
XMPPUserCoreDataStorageObject *user = [_fetchedResultsController objectAtIndexPath:_removedIndexPath];
[[xmppDelegate xmppRoster]removeUser:user.jid];
//定义一个成员变量记录要删除表格的索引 NSIndexPath *_removedIndexPath;
}
}