IOS UIButton 简单应用
2011-06-12
objective-c 开发过程是经常用到 UIButton 控件。 简单介绍写 UIButton 的使用 (也包括了一个简单的 delegate 的实现)。
首先, View的实现
视图头文件 View.h
#import
// delegate声明
@protocol btnAction
-(void)getDetail;
@end
@interface SAView : UIView {
id delegate;
}
@property (nonatomic, assign) id delegate;
-(void) getDetail:(id)sender;
@end
实现文件 View.m
#import "SAView.h"
@implementation SAView
@synthesize delegate;
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
[self setBackgroundColor:[UIColor grayColor]];
UIButton * btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(20, 20, 200, 40);
[btn setTitle:@"Cilck Me!" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(getDetail:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:btn];
}
return self;
}
-(void)getDetail:(id)sender
{
[delegate getDetail];
}
- (void)dealloc
{
[super dealloc];
}
@end
然后,Controller 的实现
Controller.h
#import
#import "SAView.h"
@interface rootController : UIViewController {
}
@end
Controller.m
#import "rootController.h"
@implementation rootController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)dealloc
{
[super dealloc];
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView
{
SAView * main = [[SAView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
main.delegate = self;
self.view = main;
[main release];
}
/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[super viewDidLoad];
}
*/
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
-(void)getDetail
{
NSLog(@"OK");
}
@end
以上就是简单的 UIButton 和delegate的应用