自定义UIActionSheet

来源：互联网发布：常见的网络安全设备有编辑：程序博客网时间：2024/05/16 16:18

UIActionSheet类系IOS开发中实现警告框的重要的类，而在好多应用中，都对它进行了扩展，今天介绍一下自定义风格的UIActionSheet

一、自定义CustomActionSheet类

CustomActionSheet类继承UIActionSheet，具体的实现如下所示：

1）CustomActionSheet.h头文件

#import <Foundation/Foundation.h>

@interface CustomActionSheet : UIActionSheet {

UIToolbar* toolBar;

UIView* view;

}

@property(nonatomic,retain)UIView* view;

@property(nonatomic,retain)UIToolbar* toolBar;

/*因为是通过给ActionSheet 加 Button来改变ActionSheet, 所以大小要与actionsheet的button数有关

*height = 84, 134, 184, 234, 284, 334, 384, 434, 484

*如果要用self.view = anotherview. 那么another的大小也必须与view的大小一样

-(id)initWithHeight:(float)height WithSheetTitle:(NSString*)title;

@end

2）CustomActionSheet.m实现文件

#import "CustomActionSheet.h"

@implementation CustomActionSheet

@synthesize view;

@synthesize toolBar;

-(id)initWithHeight:(float)height WithSheetTitle:(NSString*)title

{

self = [super init];
if (self) {
int theight = height - 40;
int btnnum = theight/50;
for(int i=0; i<btnnum; i++){
[self addButtonWithTitle:@" "];
}
toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
toolBar.barStyle = UIBarStyleBlackOpaque;
UIBarButtonItem *titleButton = [[UIBarButtonItem alloc] initWithTitle:title
style:UIBarButtonItemStylePlain
target:nil
action:nil];

UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleDone
target:self
action:@selector(done)];

UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithTitle:@"Cancel"
style:UIBarButtonItemStyleBordered
target:self
action:@selector(docancel)];

UIBarButtonItem *fixedButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:nil
action:nil];

NSArray *array = [[NSArray alloc] initWithObjects:leftButton,fixedButton,titleButton,fixedButton,rightButton,nil];
[toolBar setItems: array];
[titleButton release];
[leftButton release];
[rightButton release];
[fixedButton release];
[array release];
[self addSubview:toolBar];
view = [[UIView alloc] initWithFrame:CGRectMake(0, 44, 320, height-44)];
view.backgroundColor = [UIColor groupTableViewBackgroundColor];
[self addSubview:view];

}

return self;

}

-(void)done
{
[self dismissWithClickedButtonIndex:0 animated:YES];
}
-(void)docancel
{
[self dismissWithClickedButtonIndex:0 animated:YES];
}
-(void)dealloc
{
[view release];
[super dealloc];

}

@end

二、利用自定义的CustomActionSheet类显示提示框

#import "TestActionSheetViewController.h"

#import "CustomActionSheet.h"

@implementation TestActionSheetViewController

-(IBAction)btndown

{

CustomActionSheet* sheet = [[CustomActionSheet alloc] initWithHeight:284.0f

WithSheetTitle:@"自定义ActionSheet"];

UILabel* label = [[UILabel alloc] initWithFrame:CGRectMake(0,50, 320, 50)];

label.text = @"这里是要自定义放的控制";

label.backgroundColor = [UIColor clearColor];
label.textAlignment = UITextAlignmentCenter;
[sheet.view addSubview:label];
[sheet showInView:self.view];
[sheet release];

}

@end

这里的UILabel是作一个示例，在这个位置你可以换成你自己的内容即可；

三、效果图

0 0