ios本身没有系统的checkbox组件，但是实际开发中会经常用到，所以专门写了一个checkbox控件，直接上代码
名单
uicheckboxbutton.h文件如下：
#import
#import common.h
@interface uicheckboxbutton : uicontrol
{
uilabel *label;
uiimageview *icon;
bool checked;
id delegate;
}
@property (retain, nonatomic) id delegate;
@property (retain, nonatomic) uilabel *label;
@property (retain, nonatomic) uiimageview *icon;
-(bool)ischecked;
-(void)setchecked: (bool)flag;
@end
uicheckboxbutton.m文件如下：
#import uicheckboxbutton.h
@implementation uicheckboxbutton
@synthesize label,icon,delegate;
- (id)initwithframe:(cgrect)frame {
if ( self = [super initwithframe: frame])
{
icon =[[uiimageview alloc] initwithframe: cgrectmake (0, 0, frame.size.height, frame.size.height)];
[self setchecked:no];
[self addsubview: icon];
label =[[uilabel alloc] initwithframe: cgrectmake(icon.frame.size.width + 7, 0,
frame.size.width - icon.frame.size.width - 10,
frame.size.height)];
label.backgroundcolor =[uicolor clearcolor];
label.textalignment = uitextalignmentleft;
[self addsubview:label];
[self addtarget:self action:@selector(clicked) forcontrolevents: uicontroleventtouchupinside];
}
return self;
}
-(bool)ischecked {
return checked;
}
-(void)setchecked: (bool)flag {
if (flag != checked)
{
checked = flag;
}
if (checked)
{
[icon setimage: [uiimage imagenamed:@checkboxselect.png]];
}
else
{
[icon setimage: [uiimage imagenamed:@checkboxnoselect.png]];
}
}
-(void)clicked {
[self setchecked: !checked];
if (delegate != nil)
{
sel sel = nsselectorfromstring (@checkbuttonclicked);
if ([delegate respondstoselector: sel])
{
[delegate performselector: sel];
}
}
}
-(void)dealloc {
delegate = nil;
[label release];
[icon release];
[super dealloc];
}
@end
使用方法：
uicheckboxbutton *checkboxbutton = [[ uicheckboxbutton alloc] initwithframe: cgrectmake(30, 50, 220, 25)];
checkboxbutton.delegate = self.delegate;
checkboxbutton.label.text = [common gettextbytag:@nocostprompt];
checkboxbutton.label.textcolor = [common getcolorbytag:@alertlabelcolor];
[self.view addsubview:checkboxbutton];
[checkboxbutton release];
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