Custom CheckBox control developed for IOS

IOS does not have the system's CheckBox component, but it is often used in actual development. Therefore, a CheckBox control is specially written and the code is directly written.

:

The UICheckBoxButton. h file is as follows:

# 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

The UICheckBoxButton. m file is as follows:

# 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 initialize mselector: sel];

}

}

}

-(Void) dealloc {

Delegate = nil;

[Label release];

[Icon release];

[Super dealloc];

}

@ End

Usage:

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];