UIButton的使用

UIButton是按鈕視圖控件，是UIView的子類，也擁有和view一樣的屬性，同時也有自己特有的屬性；

UIButton的主要作用是用來響應，或控制其他事件的發生；比如說顯示，或隱藏其他控件，或調用其他函數方法。

1. UILabel*lable01=[[UILabelalloc]initWithFrame:CGRectMake(0.0,0.0,300.0,40.0)];
2. lable01.backgroundColor=[UIColoryellowColor];
3. lable01.text=@"按鈕在控制我的顯示，或隱藏";
4. lable01.textColor=[UIColorredColor];
5. [self.viewaddSubview:lable01];
6. lable01.hidden=YES;
7. lable01.center=self.view.center;
8. lable01.tag=2000;
9. //實例化
10. UIButton*button001=[[UIButtonalloc]initWithFrame:CGRectMake(10.0,50.0,120.0,40.0)];
11. //是view的子類，擁有view一樣的屬性
12. [self.viewaddSubview:button001];
13. //button001.backgroundColor=[UIColoryellowColor];
14. //button001.layer.cornerRadius=5.0;
15. //button001.layer.masksToBounds=YES;
16. //button001.layer.borderWidth=0.5;
17. //button001.layer.borderColor=[UIColorredColor].CGColor;
18. button001.tag=1000;
19. //自己特有的屬性
20.  
21. //1選中狀態，默認是NO，即未選中；通常結合響應方法進行使用
22. button001.selected=NO;
23. //2按鈕標題顏色，可以根據響應狀態進行設置，比如常規，或高亮，或選中等
24. [button001setTitleColor:[UIColorredColor]forState:UIControlStateNormal];
25. [button001setTitleColor:[UIColorblackColor]forState:UIControlStateHighlighted];
26. [button001setTitleColor:[UIColorgreenColor]forState:UIControlStateSelected];
     
27. //3按鈕標題
28. //3-1大小
29. button001.titleLabel.font=[UIFontsystemFontOfSize:12.0];
30. //3-2對齊方式，默認居中
31. //button001.contentHorizontalAlignment=UIControlContentHorizontalAlignmentCenter;
32. //button001.contentVerticalAlignment=UIControlContentVerticalAlignmentCenter;
33. //4按鈕標題，同樣也可以根據響應狀態進行設置
34. [button001setTitle:@"顯示標簽"forState:UIControlStateNormal];
35. [button001setTitle:@"隱藏標簽"forState:UIControlStateHighlighted];
36. [button001setTitle:@"隱藏標簽"forState:UIControlStateSelected];
37. //5設置圖片，默認圖標在左，標題在右，還可通過設置改變顯示樣式，比如圖片在上，標題在下，或圖片在右，標題在左。
38. [button001setImage:[UIImageimageNamed:@"imageNormal"]forState:UIControlStateNormal];
39. [button001setImage:[UIImageimageNamed:@"imageSelected"]forState:UIControlStateSelected];
40. //6設置背景圖片
41. [button001setBackgroundImage:[UIImageimageNamed:@"bgImageNormal"]forState:UIControlStateNormal];
42. [button001setBackgroundImage:[UIImageimageNamed:@"bgImageHighlight"]forState:UIControlStateHighlighted];
43. [button001setBackgroundImage:[UIImageimageNamed:@"bgImageSelected"]forState:UIControlStateSelected];
44. //7其他屬性
45. //7-1如當前顯示標題
46. NSString*title=button001.currentTitle;
47. NSLog(@"title=%@",title);
48.  
49. //7-2點擊屬性，默認為YES，即可點擊
50. //方法1
51. //BOOLisEnable=button001.enabled;
52. //NSLog(@"isEnable=%@",@(isEnable));
53. //button001.enabled=NO;//設置為不可用
54. //isEnable=button001.enabled;
55. //NSLog(@"isEnable=%@",@(isEnable));
56. //方法2view的userInteractionEnabled屬性，默認為YES，即可點擊
57. BOOLisEnable=button001.userInteractionEnabled;
58. NSLog(@"isEnable=%@",@(isEnable));
59. button001.userInteractionEnabled=NO;//設置為不可用
60. isEnable=button001.userInteractionEnabled;
61. NSLog(@"isEnable=%@",@(isEnable));
     
62. //target方法
63. [button001addTarget:selfaction:@selector(buttonClick:)forControlEvents:UIControlEventTouchUpInside];
64. -(void)buttonClick:(UIButton*)button
65. {
66. button.selected=!button.selected;
67.  
68. UILabel*label=(UILabel*)[self.viewviewWithTag:2000];
69. label.hidden=!button.selected;
70.  
71. NSLog(@"按鈕被點擊了");
72. }
73.