第一步：新建一个工程，在 .h文件中坐如下声明：

#import <UIKit/UIKit.h>

@interface MyButtonViewController : UIViewController{

    UIButton* myButton;

}

@property (nonatomic,retain)UIButton *myButton;

在. m 文件中

#import "MyButtonViewController.h"

@interface MyButtonViewController ()

@end

@implementation MyButtonViewController

@synthesize myLable,topic,form,contentField,contentLable,contentSwitch,myButton;

- (void)viewDidLoad

{

    //创建自定义控件，代码实现

    CGRect frame = CGRectMake(105.0f, 150.0f, 100.0f, 50.0f);  //位置

    myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; //初始化

    [myButton setTitle:@"Click here" forState:normal]; //设置标题以及其他属性

    myButton.frame = frame;

    [self.view addSubview:self.myButton]; //将UIButton  添加在视图上。

   

    [super viewDidLoad];

	// Do any additional setup after loading the view, typically from a nib.

}

- (void)viewDidUnload

{

    [super viewDidUnload];

    // Release any retained subviews of the main view.

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {

        return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);

    } else {

        return YES;

    }

}

-(void) dealloc{

    [myButton release];

    [super dealloc];

}

//实现键盘隐藏：

-(IBAction)resignResponder

{

    [topic resignFirstResponder];

    [form resignFirstResponder];

}