iOS-自定义UIAlertView继承于UIView

因为在开发的时候 ，所有的 viewcontroller都是继承于同一个VC，导致子类VC上的UIAlertView会截获父类上的UIAlertView的delegate,只好就自己写了一个，因为是父类上的要求比较简单，所以就直接继承了一个UIView，做成效果类似的UIAlertView。其实是没什么难度的。

==================== h ====================

#import

@protocol LNfexibleDelegate

-(void)buttonDownForEvent;

@end

@interface LNFexibleAlertView : UIView

{

NSString *_title;

NSString *_message;

NSString *_btnName;

}

@property (strong,nonatomic) UILabel *titleLabel;

@property (strong,nonatomic) UILabel *messageLabel;

@property (strong,nonatomic) UIButton *btnEvent;

@property (strong,nonatomic) UIImageView *bgView;

@property (strong,nonatomic) UIImageView *centerView;

@property (weak,nonatomic) idLNdelegate;

-(id)initWithTitle:(NSString *)title andMessage:(NSString *)message andBtnName:(NSString *)name andFrame:(CGRect)frame;

-(void)dismiss;

@end

============= m ==============

#import "LNFexibleAlertView.h"

@implementation LNFexibleAlertView

@synthesize bgView = _bgView;

@synthesize titleLabel = _titleLabel;

@synthesize messageLabel = _messageLabel;

@synthesize btnEvent = _btnEvent;

@synthesize centerView = _centerView;

-(id)initWithTitle:(NSString *)title andMessage:(NSString *)message andBtnName:(NSString *)name andFrame:(CGRect)frame

{

self = [super init];

if (self) {

_title = title;

_message = message;

_btnName = name;

self.frame = frame;

[self buildStage];

}

return self;

}

-(void)buildStage

{

self.backgroundColor = [UIColor clearColor];

//模糊视图

_bgView = [[UIImageView alloc]initWithFrame:self.frame];

_bgView.backgroundColor = [UIColor blackColor];

_bgView.alpha = 0.52f;

_centerView = [[UIImageView alloc]initWithFrame:CGRectMake(50, 100, self.frame.size.width-100, 200)];

_centerView.backgroundColor = [UIColor whiteColor];

_centerView.layer.cornerRadius = 8;

_centerView.userInteractionEnabled = YES;

[self addSubview:_bgView];

[self addSubview:_centerView];

//提示信息

_titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(8, 5, _centerView.frame.size.width-16, 44)];

_titleLabel.font = [UIFont systemFontOfSize:20];

_titleLabel.textAlignment = NSTextAlignmentCenter;

_titleLabel.textColor = [UIColor blackColor];

_titleLabel.text = _title;

_messageLabel = [[UILabel alloc]initWithFrame:CGRectMake(8, _titleLabel.frame.size.height +_titleLabel.frame.origin.y, _titleLabel.frame.size.width, 44)];

_messageLabel.font = [UIFont systemFontOfSize:15];

_messageLabel.textAlignment = NSTextAlignmentCenter;

_messageLabel.numberOfLines = 0;

_messageLabel.textColor = [UIColor blackColor];

_messageLabel.text = _message;

CGSize lableSize = [_message sizeWithFont:_messageLabel.font constrainedToSize:CGSizeMake(_messageLabel.frame.size.width, 200) lineBreakMode:NSLineBreakByTruncatingTail];

CGRect frame = _messageLabel.frame;

frame.size.height = lableSize.height;

_messageLabel.frame = frame;

UIImageView *line = [[UIImageView alloc]initWithFrame:CGRectMake(0, _messageLabel.frame.origin.y+_messageLabel.frame.size.height+10, _centerView.frame.size.width, 1)];

line.backgroundColor = [UIColor lightGrayColor];

[_centerView addSubview:line];

//点击按钮

_btnEvent = [UIButton buttonWithType:UIButtonTypeRoundedRect];

_btnEvent.frame = CGRectMake(8, _messageLabel.frame.size.height+_messageLabel.frame.origin.y+17, _titleLabel.frame.size.width, 35);

_btnEvent.titleLabel.textAlignment = NSTextAlignmentCenter;

_btnEvent.titleLabel.font = [UIFont systemFontOfSize:20];

_btnEvent.titleLabel.textColor = [UIColor blueColor];

[_btnEvent setTitle:_btnName forState:UIControlStateNormal];

[_btnEvent addTarget:self action:@selector(clickButton) forControlEvents:UIControlEventTouchUpInside];

[_centerView addSubview:_titleLabel];

[_centerView addSubview:_messageLabel];

[_centerView addSubview:_btnEvent];

CGRect centerNew = _centerView.frame;

centerNew.size.height = _titleLabel.frame.size.height + _messageLabel.frame.size.height + _btnEvent.frame.size.height +33.0f;

_centerView.frame = centerNew;

_centerView.center = CGPointMake(self.frame.size.width/2, self.frame.size.height/2);

}

- (void)clickButton

{

[self.LNdelegate buttonDownForEvent];

[self dismiss];

}

-(void)dismiss

{

[self removeFromSuperview];

}

============ 引用 ===============

#define kUIHeight  [[UIScreen mainScreen]bounds].size.height

#define kUIWidth  [[UIScreen mainScreen]bounds].size.width

/**

*  自定义的 alert

*/

-(void)buildAlert

{

LNFexibleAlertView *alert = [[LNFexibleAlertView alloc]initWithTitle:@"提示" andMessage:@"测试新的alert!" andBtnName:@"确定" andFrame:CGRectMake(0,0,kUIWidth,kUIHeight)];

alert.LNdelegate = self;

[[[[UIApplication sharedApplication]delegate] window] addSubview:alert];

}

-(void)buttonDownForEvent

{

NSLog(@"9099090909090");

}