我们要实现的功能是:
1.未登录的情况下,点击某个按钮进入到不需要登录的功能,则直接进入
2.未登录的情况下,点击某个按钮进入到需要登录的功能A,则先进入登录界面,登录成功后直接跳转到这个功能A,登录不成功不跳转
3.已经登录的情况下,点击某个按钮进入到需要登录的功能A,则直接进入
实现这个功能有简单版的(重复代码会多,容易理解),稍复杂版的(简单版的封装,重复代码少,逻辑稍微有点复杂)
简单版目录截图:
说明:
1是三个功能页面,分别为转账,汇款,借款
2是登录界面,包括:用户名输入框,密码输入框,登录按钮,取消按钮
3是AppDelegate 设置TabbarController
4是TabbarController的viewControllers元素,页面包括三个圆按钮
5是 写宏定义的文件 和 frame的方便调用方法
6是按钮图标
下面说实现过程,只贴关键代码,简单实现的demo地址是:点击打开链接http://download.csdn.net/detail/qq_15509071/9839319
百度网盘的下载地址是https://pan.baidu.com/s/1bphC947
1.用一个全局变量记录是否登录 ,点击一个按钮时,进行判断,如果没有登录则往NSNotificationCenter添加一个观察者和名字然后展示登录界面
//三个按钮的点击事件 - (void)btnClicked:(UIButton *)btnn{ if (btnn.tag == 0) { // //判断是否登录 登录了直接进 没登录引导登录并登录成功后直接跳到对应业务 // if (APPLICATION.isLogin == YES) { [self jumpToZhuanZhang]; }else{ // //先移除本通知,原因是:点击一个功能跳到登录界面,但是在登录界面点的取消,反复操作,再点这个功能, //相同的通知会增加多次,登陆成功后会多次进入相应的功能 // [[NSNotificationCenter defaultCenter] removeObserver:self name:@"LOGIN_ZZ" object:nil] ; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(jumpToZhuanZhang) name:@"LOGIN_ZZ" object:nil]; LoginViewController *loginVC = [[LoginViewController alloc]init]; [self.navigationController presentViewController:loginVC animated:YES completion:^{}]; } }else if(btnn.tag == 1){ if (APPLICATION.isLogin == YES) { [self jumpToHuiKuan]; }else{ [[NSNotificationCenter defaultCenter] removeObserver:self name:@"LOGIN_HK" object:nil] ; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(jumpToHuiKuan) name:@"LOGIN_HK" object:nil]; LoginViewController *loginVC = [[LoginViewController alloc]init]; [self.navigationController presentViewController:loginVC animated:YES completion:^{ }]; } }else{ if (APPLICATION.isLogin == YES) { [self jumpToJieKuan]; }else{ [[NSNotificationCenter defaultCenter] removeObserver:self name:@"LOGIN_JK" object:nil] ; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(jumpToJieKuan) name:@"LOGIN_JK" object:nil]; LoginViewController *loginVC = [[LoginViewController alloc]init]; [self.navigationController presentViewController:loginVC animated:YES completion:^{ }]; } } } -(void)jumpToZhuanZhang{ ZhuanZhangViewController *vc = [[ZhuanZhangViewController alloc]init]; vc.hidesBottomBarWhenPushed =YES; [self.navigationController pushViewController:vc animated:YES]; } -(void)jumpToHuiKuan{ HuiKuanViewController *vc = [[HuiKuanViewController alloc]init]; vc.hidesBottomBarWhenPushed =YES; [self.navigationController pushViewController:vc animated:YES]; } -(void)jumpToJieKuan{ JieKuanViewController *vc = [[JieKuanViewController alloc]init]; vc.hidesBottomBarWhenPushed =YES; [self.navigationController pushViewController:vc animated:YES]; }
2.登录验证成功后,去掉登录页面,并发送通知执行。不成功则在当前页t停留
- (IBAction)loginBtnClicked:(id)sender { if (self.userName.text.length > 0 && self.passWord.text.length > 0) { APPLICATION.isLogin = YES; [self dismissViewControllerAnimated:YES completion:^{ [[NSNotificationCenter defaultCenter] postNotificationName:@"LOGIN_ZZ" object:nil ]; [[NSNotificationCenter defaultCenter] postNotificationName:@"LOGIN_HK" object:nil ]; [[NSNotificationCenter defaultCenter] postNotificationName:@"LOGIN_JK" object:nil ]; }]; }else{ UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"提示" message:@"输入有误" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil nil]; [alertView show]; } }
3.这样基本就实现了,但是有问题。依次点击转账按钮---->出现登录界面--->点取消--->登录界面消失--->点汇款按钮---->出现登录界面--->输入用户名密码点登录。结果是依次进入了转账页面和汇款页面。修改这个问题需要增加一个enum记录引导登录的功能。代码更改为:
********声明******** typedef enum JumpType{ ZHUANZHANG_HOME_LOGIN = 0, HUIKUAN_HOME_LOGIN , JIEKUAN_HOME_LOGIN , }MYJumpType; ********转账按钮点击事件******** if (btnn.tag == 0) { // //判断是否登录 登录了直接进 没登录引导登录并登录成功后直接跳到对应业务 // if (APPLICATION.isLogin == YES) { [self jumpToZhuanZhang]; }else{ // //先移除本通知,原因是:点击一个功能跳到登录界面,但是在登录界面点的取消,反复操作,再点这个功能, //相同的通知会增加多次,登陆成功后会多次进入相应的功能 // APPLICATION.jumpType = ZHUANZHANG_HOME_LOGIN; [[NSNotificationCenter defaultCenter] removeObserver:self name:@"LOGIN_ZZ" object:nil] ; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(jumpToZhuanZhang) name:@"LOGIN_ZZ" object:nil]; LoginViewController *loginVC = [[LoginViewController alloc]init]; [self.navigationController presentViewController:loginVC animated:YES completion:^{}]; } } ********登录按钮点击事件******** - (IBAction)loginBtnClicked:(id)sender { if (self.userName.text.length > 0 && self.passWord.text.length > 0) { APPLICATION.isLogin = YES; [self dismissViewControllerAnimated:YES completion:^{ if(APPLICATION.jumpType == ZHUANZHANG_HOME_LOGIN){ [[NSNotificationCenter defaultCenter] postNotificationName:@"LOGIN_ZZ" object:nil ]; }else if (APPLICATION.jumpType == HUIKUAN_HOME_LOGIN){ [[NSNotificationCenter defaultCenter] postNotificationName:@"LOGIN_HK" object:nil ]; }else if (APPLICATION.jumpType == JIEKUAN_HOME_LOGIN){ [[NSNotificationCenter defaultCenter] postNotificationName:@"LOGIN_JK" object:nil ]; } }]; }else{ UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"提示" message:@"输入有误" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil nil]; [alertView show]; } }
4简单的实现就完成了。
5开始对上面代码封装 封装后的代码地址http://download.csdn.net/detail/qq_15509071/9839559
百度网盘的链接地址是 https://pan.baidu.com/s/1qYEwdvm
5.1增加路由类
// // RouteManager.h // GuideLoginDemo // // Created by yfc on 17/5/11. // Copyright ? 2017年 yfc. All rights reserved. // #import#import @interface RouteManager : NSObject + (void)pushViewControllerWithOriginViewController:(UIViewController *)originViewController loginFlag:(NSString *)loginFlag identifier:(const NSString *)identifier otherParameters:(NSDictionary *)parameters; @end
// // RouteManager.m // GuideLoginDemo // // Created by yfc on 17/5/11. // Copyright ? 2017年 yfc. All rights reserved. // #import "RouteManager.h" #import "config.h" static RouteManager *routeManager = nil; @interface RouteManager () @property(nonatomic,assign)UIViewController *originViewController; @property(nonatomic,retain)NSString *currentIdentifier; @property(nonatomic,assign)RouteManager *manager_; @end @implementation RouteManager + (RouteManager*)sharedRouteManager{ @synchronized(routeManager) { if(!routeManager) { routeManager = [[RouteManager alloc]init]; } } return routeManager; } + (void)pushViewControllerWithOriginViewController:(UIViewController *)originViewController loginFlag:(NSString *)loginFlag identifier:(const NSString *)identifier otherParameters:(NSDictionary *)parameters;{ RouteManager *manager = [RouteManager sharedRouteManager]; NSLog(@"manager=%@",manager); manager.manager_ = manager; [manager pushViewControllerWithOriginViewController:originViewController loginFlag:loginFlag identifier:identifier otherParameters:parameters]; } - (void)pushViewControllerWithOriginViewController:(UIViewController *)originViewController loginFlag:(NSString *)loginFlag identifier:(const NSString *)identifier otherParameters:(NSDictionary *)parameters;{ self.originViewController = originViewController; self.currentIdentifier = (NSString *)identifier; if ([loginFlag isEqualToString:@"Y"]) { if (APPLICATION.isLogin == YES){ [self pushViewController]; }else{ //引导登录 [self setNotiObserverLogin]; } } else{ [self pushViewController]; } } - (void)setNotiObserverLogin{ APPLICATION.jumpType = ROUTE_MANAGER; [[NSNotificationCenter defaultCenter] removeObserver:self name:@"ROUTE_MANAGER" object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(pushViewController) name:@"ROUTE_MANAGER" object:nil]; //如果已经有登录页了 不要重复弹出 UINavigationController *topNavi = (UINavigationController*)APPLICATION.window.rootViewController.presentedViewController; for (UIViewController *loginVC in topNavi.viewControllers) { if ([loginVC isKindOfClass:NSClassFromString(@"LoginViewController")]) { return; } } NSLog(@"%@",(APPLICATION.window.rootViewController.presentedViewController)); LoginViewController *loginVC = [[LoginViewController alloc]init]; [APPLICATION.window.rootViewController presentViewController:loginVC animated:YES completion:^{}]; } - (void)pushViewController{ { id viewController = [[NSClassFromString(self.currentIdentifier) alloc]init]; if ([self.originViewController isKindOfClass:[UINavigationController class]]) { [(UINavigationController*)self.originViewController pushViewController:viewController animated:YES]; }else{ [self.originViewController.navigationController pushViewController:viewController animated:YES]; } } } @end
未完待续……