已经很长一段时间没有更新博客了，今天写了个弹出框，主要用于SDK里面

现贴出来分享下：

#import <Foundation/Foundation.h>

@interface SYTipView : NSObject
+ (SYTipView *)shareInstance;
- (void)showSuccessTipWithText:(NSString *)tipText;
- (void)showErrorTipWithText:(NSString *)tipText;

- (void)startWithText:(NSString *)tipText;
- (void)dismissSuccessWithText:(NSString *)tipText block:(void(^)())action;
- (void)dismissErrorWithText:(NSString *)tipText block:(void(^)())action;
@end

#import "SYTipView.h"

#define KEYWINDOW [UIApplication sharedApplication].keyWindow
#define GetKeyWindow  KEYWINDOW ? KEYWINDOW : [[UIApplication sharedApplication].windows objectAtIndex:0]
#define TIPVIEW_WIDTH 100
#define TIPIMAGEVIEW_WIDTH 30

static SYTipView *syTipView = nil;

@interface SYTipView ()<UITextViewDelegate>

@property (nonatomic, strong) UIActivityIndicatorView *activityIndicatorView;
@property (nonatomic, strong) UITextView *tipTextView;
@property (nonatomic, strong) UIViewController *tipViewController;
@property (nonatomic, strong) UIView *tipBgView;
@property (nonatomic, strong) UIImageView *rightImageView;
@property (nonatomic, strong) UIImageView *wrongImageView;
@property (nonatomic, assign) BOOL isDisplaying;    //限制不能重复点
@end

@implementation SYTipView

+ (SYTipView *)shareInstance
{
    static dispatch_once_t oneceToken;
    dispatch_once(&oneceToken, ^{
        syTipView = [[[self class] alloc] init];
    });
    return syTipView;
}

- (id)init
{
    self = [super init];
    if (self) {
        UIWindow *keyWindow = GetKeyWindow;
        
        if (_tipViewController == nil) {
            _tipViewController = [[UIViewController alloc] init];
            [_tipViewController.view setFrame:CGRectMake(0, 0, TIPVIEW_WIDTH, TIPVIEW_WIDTH)];
            _tipViewController.view.center = CGPointMake(keyWindow.rootViewController.view.bounds.size.width * 0.5f, keyWindow.rootViewController.view.bounds.size.height * 0.5f);
            _tipViewController.view.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;
        }
        
        if (_activityIndicatorView == nil) {
            _activityIndicatorView = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0 , 0, TIPVIEW_WIDTH, TIPVIEW_WIDTH)];
            _activityIndicatorView.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
            _activityIndicatorView.backgroundColor = [UIColor grayColor];
            _activityIndicatorView.alpha = 0.5;
            _activityIndicatorView.layer.cornerRadius = 10;
        }
        
        if (_tipBgView == nil) {
            _tipBgView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, TIPVIEW_WIDTH, TIPVIEW_WIDTH)];
            _tipBgView.layer.cornerRadius = 10;
            _tipBgView.backgroundColor = [UIColor grayColor];
            _tipBgView.alpha = 0.5;
        }
        
        if (_rightImageView == nil) {
            NSString *bundlePath = [[NSBundle mainBundle] pathForResource:@"SYTipView" ofType:@"bundle"];
            NSBundle *bundle = [NSBundle bundleWithPath:bundlePath];
            NSString *imagePath = [bundle pathForResource:@"images/SY_arrow" ofType:@"png"];
            _rightImageView = [[UIImageView alloc] initWithImage:[UIImage imageWithContentsOfFile:imagePath]];
//            NSString *const MJRefreshBundleName = @"SYTipView.bundle";
//            NSString *path = [MJRefreshBundleName stringByAppendingPathComponent:@"images/SY_arrow.png"];
//            UIImage *a = [UIImage imageNamed:path];
//            _rightImageView = [[UIImageView alloc] initWithImage:a];
            [_rightImageView setFrame:CGRectMake(0, 0, TIPIMAGEVIEW_WIDTH, TIPIMAGEVIEW_WIDTH)];
            _rightImageView.center = CGPointMake(_tipViewController.view.bounds.size.width / 2, _tipViewController.view.bounds.size.height - 64);
        }
        
        if (_wrongImageView== nil) {
            NSString *bundlePath = [[NSBundle mainBundle] pathForResource:@"SYTipView" ofType:@"bundle"];
            NSBundle *bundle = [NSBundle bundleWithPath:bundlePath];
            NSString *imagePath = [bundle pathForResource:@"images/SY_wrong" ofType:@"png"];
            _wrongImageView = [[UIImageView alloc] initWithImage:[UIImage imageWithContentsOfFile:imagePath]];
            [_wrongImageView setFrame:CGRectMake(0, 0, TIPIMAGEVIEW_WIDTH, TIPIMAGEVIEW_WIDTH)];
            _wrongImageView.center = CGPointMake(_tipViewController.view.bounds.size.width / 2, _tipViewController.view.bounds.size.height - 64);
        }
    }
    return self;
}

#pragma mark - 构造TipTextView

- (void)createTipTextView:(NSString *)tipText
{
    //文字提示
    _tipTextView = [[UITextView alloc] initWithFrame:CGRectMake(0 , 0, TIPVIEW_WIDTH, TIPVIEW_WIDTH)];
    
    //让文字垂直居中
    _tipTextView.delegate = self;
    [_tipTextView addObserver:self forKeyPath:@"contentSize" options:(NSKeyValueObservingOptionNew) context:nil];
    _tipTextView.textAlignment = NSTextAlignmentCenter;
    _tipTextView.font = [UIFont boldSystemFontOfSize:14];
    _tipTextView.backgroundColor = [UIColor clearColor];
    _tipTextView.textColor = [UIColor whiteColor];
    _tipTextView.userInteractionEnabled = NO;
    _tipTextView.text = tipText;
}

//#pragma mark -
//
//- (void)showTipWithText:(NSString *)tipText
//{
//    UIWindow *keyWindow = GetKeyWindow;
//    
//    _tipViewController.view.center = CGPointMake(keyWindow.rootViewController.view.bounds.size.width * 0.5f, keyWindow.rootViewController.view.bounds.size.height * 0.5f);
//    [_tipViewController.view addSubview:_activityIndicatorView];
//    
//    [self createTipTextView:tipText];
//    [_tipViewController.view addSubview:_tipTextView];
//    
//    [keyWindow.rootViewController.view addSubview:_tipViewController.view];
////    [_activityIndicatorView startAnimating];
//    
//    [self performSelector:@selector(dismissTipView) withObject:nil afterDelay:1];
//}

//#pragma mark - 显示正确信息提示
//
//- (void)dismissTipView
//{
//    [_activityIndicatorView stopAnimating];
//    [_activityIndicatorView removeFromSuperview];
//    [_tipTextView removeFromSuperview];
//    [_tipViewController.view removeFromSuperview];
//}

#pragma mark - 显示正确信息提示

- (void)showSuccessTipWithText:(NSString *)tipText
{
    if (_isDisplaying) {
        return;
    }
    _isDisplaying = YES;
    UIWindow *keyWindow = GetKeyWindow;
    
    _tipViewController.view.center = CGPointMake(keyWindow.rootViewController.view.bounds.size.width * 0.5f, keyWindow.rootViewController.view.bounds.size.height * 0.5f);
    
    [_tipBgView addSubview:_rightImageView];
    [self createTipTextView:tipText];
    [_tipBgView addSubview:_tipTextView];
    [_tipViewController.view addSubview:_tipBgView];
    
    [keyWindow.rootViewController.view addSubview:_tipViewController.view];
    
    [self performSelector:@selector(removeSuccessTipView) withObject:nil afterDelay:1];
}

- (void)removeSuccessTipView
{
    [_rightImageView removeFromSuperview];
    [_tipTextView removeFromSuperview];
    _tipTextView = nil;
    [_tipBgView removeFromSuperview];
    [_tipViewController.view removeFromSuperview];
    
    _isDisplaying = NO;
}

#pragma mark - 显示错误信息提示

- (void)showErrorTipWithText:(NSString *)tipText
{
    if (_isDisplaying) {
        return;
    }
    _isDisplaying = YES;
    UIWindow *keyWindow = GetKeyWindow;
    
    _tipViewController.view.center = CGPointMake(keyWindow.rootViewController.view.bounds.size.width * 0.5f, keyWindow.rootViewController.view.bounds.size.height * 0.5f);
    
    [_tipBgView addSubview:_wrongImageView];
    [self createTipTextView:tipText];
    [_tipBgView addSubview:_tipTextView];
    [_tipViewController.view addSubview:_tipBgView];
    
    [keyWindow.rootViewController.view addSubview:_tipViewController.view];
    
    [self performSelector:@selector(removeErrorTipView) withObject:nil afterDelay:1];
}

- (void)removeErrorTipView
{
    [_wrongImageView removeFromSuperview];
    [_tipTextView removeFromSuperview];
    _tipTextView = nil;
    [_tipBgView removeFromSuperview];
    [_tipViewController.view removeFromSuperview];
    
    _isDisplaying = NO;
}

#pragma mark - 开始提示

- (void)startWithText:(NSString *)tipText;
{
    if (_isDisplaying) {
        return;
    }
    _isDisplaying = YES;
    UIWindow *keyWindow = GetKeyWindow;
    
    _tipViewController.view.center = CGPointMake(keyWindow.rootViewController.view.bounds.size.width * 0.5f, keyWindow.rootViewController.view.bounds.size.height * 0.5f);
    [_tipViewController.view addSubview:_activityIndicatorView];

    [self createTipTextView:tipText];
    [_tipViewController.view addSubview:_tipTextView];
    
    [keyWindow.rootViewController.view addSubview:_tipViewController.view];
    [_activityIndicatorView startAnimating];
}

#pragma mark - 关闭有回调的成功提示

- (void)dismissSuccessWithText:(NSString *)tipText block:(void(^)())action
{
    [_activityIndicatorView stopAnimating];
    [_activityIndicatorView removeFromSuperview];
    
    [_tipBgView addSubview:_rightImageView];
    
    [_tipTextView removeFromSuperview];
    _tipTextView = nil;
    [self createTipTextView:tipText];
    [_tipBgView addSubview:_tipTextView];
    
    [_tipViewController.view addSubview:_tipBgView];

    [self performSelector:@selector(removeSuccessTipViewAction:) withObject:action afterDelay:1];
}

- (void)removeSuccessTipViewAction:(void(^)())action
{
    [_tipTextView removeFromSuperview];
    _tipTextView = nil;
    [_rightImageView removeFromSuperview];
    [_tipBgView removeFromSuperview];
    [_tipViewController.view removeFromSuperview];
    action();
    
    _isDisplaying = NO;
}

#pragma mark - 关闭有回调的失败提示

- (void)dismissErrorWithText:(NSString *)tipText block:(void(^)())action
{
    [_activityIndicatorView stopAnimating];
    [_activityIndicatorView removeFromSuperview];
    
    [_tipBgView addSubview:_wrongImageView];
    
    [_tipTextView removeFromSuperview];
    _tipTextView = nil;
    [self createTipTextView:tipText];
    [_tipBgView addSubview:_tipTextView];
    
    [_tipViewController.view addSubview:_tipBgView];
    
    [self performSelector:@selector(removeErrorTipViewAction:) withObject:action afterDelay:1];
}

- (void)removeErrorTipViewAction:(void(^)())action
{
    [_tipTextView removeFromSuperview];
    _tipTextView = nil;
    [_wrongImageView removeFromSuperview];
    [_tipBgView removeFromSuperview];
    [_tipViewController.view removeFromSuperview];
    action();
    
    _isDisplaying = NO;
}

//- (void)dismissTipViewAction:(void(^)())action
//{
//    [_activityIndicatorView stopAnimating];
//    [_activityIndicatorView removeFromSuperview];
//    [_tipTextView removeFromSuperview];
//    [_tipViewController.view removeFromSuperview];
//    action();
//}

//- (void)dismissWithText:(NSString *)tipText block:(void(^)())action
//{
//    _tipTextView.text = tipText;
//    
//    [self performSelector:@selector(dismissTipViewAction:) withObject:action afterDelay:1];
//}

#pragma mark - 文本垂直居中对齐或底部居中对齐KVC

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
    UITextView *tempTextView = object;
    //    //垂直居中对齐
    //    CGFloat topCorrect = (tempTextView.bounds.size.height - tempTextView.contentSize.height * tempTextView.zoomScale) / 2;
    //    topCorrect = topCorrect < 0.0 ? 0.0 : topCorrect;
    //    tempTextView.contentOffset = (CGPoint){.x = 0, .y = -topCorrect};
    
    // Bottom vertical alignment
    CGFloat topCorrect = ([tempTextView bounds].size.height - [tempTextView contentSize].height);
    topCorrect = (topCorrect < 0.0 ? 0.0 : topCorrect);
    tempTextView.contentOffset = (CGPoint){.x = 0, .y = -topCorrect};
    
    [tempTextView removeObserver:self forKeyPath:@"contentSize" context:nil];
}
@end

IOS7风格弹出框-支持block回调