.h文件
/**
快速创建AlertController：包括Alert 和 ActionSheet
@param title 标题文字
@param message 消息体文字
@param actions 可选择点击的按钮（不包括取消）
@param cancelTitle 取消按钮（可自定义按钮文字）
@param style 类型：Alert 或者 ActionSheet
@param completion 完成点击按钮之后的回调（不包括取消）
*/
+ (void)showAlertWithTitle: (NSString *)title message: (NSString *)message actionTitles: (NSArray<NSString *> *)actions cancelTitle: (NSString *)cancelTitle style: (UIAlertControllerStyle)style completion: (void(^)(NSInteger index))completion;
.m文件
+ (void)showAlertWithTitle: (NSString *)title message: (NSString *)message actionTitles: (NSArray<NSString *> *)actions cancelTitle: (NSString *)cancelTitle style: (UIAlertControllerStyle)style completion: (void(^)(NSInteger index))completion {
UIAlertController *alert = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:style];
for (NSInteger index = 0; index < actions.count; index++) {
UIAlertAction *action = [UIAlertAction actionWithTitle:actions[index] style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
!completion ? : completion(index);
}];
[alert addAction:action];
}
if (cancelTitle.length) {
UIAlertAction *cancel = [UIAlertAction actionWithTitle:cancelTitle style:UIAlertActionStyleCancel handler:nil];
[alert addAction:cancel];
}
UIViewController *vc = [[UIApplication sharedApplication] keyWindow].rootViewController;
[vc presentViewController:alert animated:YES completion:nil];
}
