1、在viewController的.m文件，遵守<UIAlertViewDelegate>代理协议
@interfacemoboViewController () <UIAlertViewDelegate>
2、在 - (void)viewDidLoad 方法中实现UIAlertView
1- (void)viewDidLoad2{3[super viewDidLoad];45//1、初始化 alertView6UIAlertView *altView = [[UIAlertView alloc]initWithTitle:[self altTitle] message:[self altMSG]delegate:self cancelButtonTitle:[self cancelBtnTitle] otherButtonTitles:[self otherBtnTitle], nil];7//2、显示 alertView8[altView show];910}
3、继续实现其它方法，返回各种标题以及监听按钮点击事件的代理方法
1//返回 标题2- (NSString *)altTitle{3return@"下线通知";4}56//返回 消息体7- (NSString *)altMSG{8return@"你的帐号在异地登录，密码可能泄露，建议前往http://mobodemy.com进行修改。";9}1011//返回 退出按钮 标题12- (NSString *) cancelBtnTitle {13return@"退出";14}1516//返回 重新登录 按钮标题17- (NSString *) otherBtnTitle {18return@"重新登录";19}2021//监听点击事件 代理方法22- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex23{24NSString *btnTitle =[alertView buttonTitleAtIndex:buttonIndex];25if([btnTitle isEqualToString:[self cancelBtnTitle]]) {26NSLog(@"你点击了退出");27}28elseif([btnTitle isEqualToString:[self otherBtnTitle]] ) {29NSLog(@"你点击了重新登录按钮");30}31}