1.在工程中找到Main.storyboard文件。
2.在Xcode右下角点击一个圆形的table标签，并找到Button控件。
3.点击Xcode右上角，有个双圆环的按钮。
4.按住ctrl建，并用鼠标左键点击按钮，拖向ViewController.h文件中，放开手并输入相应的名称。
这个时候在ViewController中就会多出来一个，你自己建的按钮信息，并和Main.storyboard中的按钮关联。
5.我们就可以操作这个按钮。我在ViewController.m中的viewDidLoad中，可以改变按钮不同状态下显示的内容，
在不同事件下的，操作。设置按钮的背景色，按钮上的文字颜色，按钮上的字体大小，
置按钮变成圆角，设置按钮边框的大小，这个设置按钮边框的颜色，设置阴影的颜色，
设置阴影的大小，设置阴影的透明度，等
代码如下：
//
// ViewController.m
// TestUI1
//
// Created by Lioncraft on 5/9/15.
// Copyright (c) 2015 Lioncraft. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self.MyTestBtn setTitle:@"可以松手~" forState:UIControlStateHighlighted];//对于点击下，改变按钮的文字内容
//forState总共有6种状态
// UIControlStateNormal = 0,
// UIControlStateHighlighted = 1 << 0, // used when UIControl isHighlighted is set
// UIControlStateDisabled = 1 << 1,
// UIControlStateSelected = 1 << 2, // flag usable by app (see below)
// UIControlStateApplication = 0x00FF0000, // additional flags available for application use
// UIControlStateReserved = 0xFF000000 // flags reserved for internal framework use
[self.MyTestBtn addTarget:self action:@selector(myTestBtn:) forControlEvents:UIControlEventTouchUpInside];
/**
*action:@selector 后面是要调用的函数
forControlEvents总共有19种事件
分别是：
UIControlEventTouchDown = 1 << 0, // on all touch downs
UIControlEventTouchDownRepeat = 1 << 1, // on multiple touchdowns (tap count > 1)
UIControlEventTouchDragInside = 1 << 2,
UIControlEventTouchDragOutside = 1 << 3,
UIControlEventTouchDragEnter = 1 << 4,
UIControlEventTouchDragExit = 1 << 5,
UIControlEventTouchUpInside = 1 << 6,
UIControlEventTouchUpOutside = 1 << 7,
UIControlEventTouchCancel = 1 << 8,
UIControlEventValueChanged = 1 << 12, // sliders, etc.
UIControlEventEditingDidBegin = 1 << 16, // UITextField
UIControlEventEditingChanged = 1 << 17,
UIControlEventEditingDidEnd = 1 << 18,
UIControlEventEditingDidEndOnExit = 1 << 19, // 'return key' ending editing
UIControlEventAllTouchEvents = 0x00000FFF, // for touch events
UIControlEventAllEditingEvents = 0x000F0000, // for UITextField
UIControlEventApplicationReserved = 0x0F000000, // range available for application use
UIControlEventSystemReserved = 0xF0000000, // range reserved for internal framework use
UIControlEventAllEvents = 0xFFFFFFFF
**/
//这个是设置按钮的背景色
self.MyTestBtn.backgroundColor = [UIColor colorWithRed:1.00f green:0.0f blue:0.82f alpha:1.00f];
//这个是设置按钮上文字的颜色
[self.MyTestBtn setTitleColor:[UIColor colorWithRed:0.00f green:1.0f blue:0.02f alpha:1.00f] forState:UIControlStateNormal];
//这个是设置按钮上文字的大小
self.MyTestBtn.font = [UIFont boldSystemFontOfSize:12.0f];
//这个是设置按钮变成圆角
self.MyTestBtn.layer.cornerRadius = 10;
//这个是设置按钮边框的大小
self.MyTestBtn.layer.borderWidth = 3;
//这个设置按钮边框的颜色
self.MyTestBtn.layer.borderColor = [UIColor blackColor].CGColor;
//这个是设置阴影的颜色
self.MyTestBtn.layer.shadowColor = [UIColor yellowColor].CGColor;
//这个是设置阴影的大小
self.MyTestBtn.layer.shadowOffset = CGSizeMake(5, 2);
//这个是设置阴影的透明度
self.MyTestBtn.layer.shadowOpacity = 0.6;
CGRect btnFrame = self.MyTestBtn.frame;
//btnFrame.origin.y += 100;
btnFrame.size.width = 100;
btnFrame.size.height = 100;
self.MyTestBtn.frame = btnFrame;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
//这个是弹出对话框的函数
-(void)myTestBtn:(UIButton *)sender{
UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@"提示" message:@"按钮点击提示" delegate:self cancelButtonTitle:@"确定" otherButtonTitles: nil];
[myAlertView show];
}
@end
6.最后，改变按钮的大小和位置还有问题。