IOS label和button

1//创建UILabel函数
2- (void) creatUILabel{
3    //定义并创建一个UILabel对象
4    UILabel* label = [[UILabel alloc] init];
5    
6    //文字赋值,字符串对象，设定字体大小，颜色，阴影，阴影偏移量，对齐方式，显示行数(默认1，设为0时智能按合适的行数显示)
7    label.text = @"你好啊，how are you 你好啊，how are you 你好啊，how are you";
8    label.font = [UIFont systemFontOfSize:12];
9    label.textColor = [UIColor blueColor];
10    label.shadowColor = [UIColor grayColor];
11    label.shadowOffset = CGSizeMake(2, 1);
12    label.textAlignment = NSTextAlignmentCenter;
13    label.numberOfLines = 0;
14    
15    //设定label的显示位置(左坐标，上坐标，宽，高)
16    label.frame = CGRectMake(100, 400, 160, 40);
17    
18    //设定label的背景颜色,clearColor透明色
19    label.backgroundColor = [UIColor grayColor];
20    
21    //将label显示到屏幕上
22    //当前.视图 增加子视图：label
23    [self.view addSubview:label];
24
25}
26
27//创建普通按钮函数
28- (void) createUIRectButton{
29    //创建圆角按钮
30    UIButton* btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
31    btn.frame = CGRectMake(100, 100, 100, 60);
32    
33    //设置按钮文字内容，正常状态和按下状态,设置文字颜色
34    [btn setTitle:@"按钮1" forState:UIControlStateNormal];
35    [btn setTitle:@"按钮被按下" forState:UIControlStateHighlighted];
36    [btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
37    [btn setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
38    
39    //设置背景颜色
40    btn.backgroundColor = [UIColor grayColor];
41    
42    //添加事件
43    [btn addTarget:self action:@selector(pressBtn:) forControlEvents:UIControlEventTouchUpInside];
44    
45    //添加到视图中显示
46    [self.view addSubview:btn];
47}
48
49//创建显示图片按钮函数
50- (void) createImageBtn{
51    //创建一个自定义类型的btn
52    UIButton* btnImage = [UIButton buttonWithType:UIButtonTypeSystem];
53    btnImage.frame = CGRectMake(100, 200, 100, 100);
54    
55    //显示图片
56    UIImage* icon01 = [UIImage imageNamed:@"2.png"];
57    [btnImage setImage:icon01 forState:UIControlStateNormal];
58    
59    //添加事件
60    [btnImage addTarget:self action:@selector(pressBtn:) forControlEvents:UIControlEventTouchUpInside];
61    
62    [self.view addSubview:btnImage];
63    
64    //添加按钮唯一标记
65    btnImage.tag = 101;
66    
67}
68
69//响应按钮按下事件函数
70- (void) pressBtn:(UIButton*) btn{
71    if(btn.tag == 101){
72        NSLog(@"hahaha...");
73    }else{
74        NSLog(@"hehehe...");
75        btn.backgroundColor = [UIColor redColor];
76    }
77
78}
79
80//程序入口
81- (void)viewDidLoad {
82    [super viewDidLoad];
83    // Do any additional setup after loading the view, typically from a nib.
84    
85    //调用创建UI函数
86    [self creatUILabel];
87    [self createUIRectButton];
88    [self createImageBtn];
89}
90
91
92
93//按钮显示网络图片
94int all_number = (int)[responseObject[@"data"] count];
95for (NSInteger i = 0; i < all_number; i++) {
96	NSURL * imageUrl = [NSURL URLWithString: responseObject[@"data"][i][@"avatar"]];
97	UIImage * image = [UIImage imageWithData: [NSData dataWithContentsOfURL: imageUrl]];
98
99    //设置图片图片为主，不拉伸
100	//[self.four_site[i] setImage:image forState:normal];
101
102    //设置按钮背景图片，按钮为主，图片上的字依然会显示，按钮变大图片会拉伸
103	[self.four_site[i] setBackgroundImage: image forState: normal];
104}