Alert封装

直接上代码

+(void)alertWithTitle:(NSString *)title andMessage:(NSString *)message andActionNames:(NSArray *)names andResult:(void(^)(NSString *name))result{
    UIAlertController *alert=[UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
    for (int i=0; i<names.count; i++) {
        NSString *name=[names objectAtIndex:i];
        [alert addAction:[UIAlertAction actionWithTitle:name style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            if (result) {
                result(action.title);
            }
        }]];
    }
    UIViewController *rootVC=[UIApplication sharedApplication].keyWindow.rootViewController;
    [rootVC presentViewController:alert animated:YES completion:nil];
}