UIApplication,UIWindow,UIViewController,UIView(layer)简单介绍

 1 // app启动完成的时候调用
 2 
 3 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 4 
 5  
 6 
 7     NSLog(@"%s",__func__);
 8 
 9     
10 
11     return YES;
12 
13 }
14 
15  
16 
17 // app即将失去焦点的时候调用
18 
19 - (void)applicationWillResignActive:(UIApplication *)application {
20 
21     NSLog(@"%s",__func__);
22 
23 }
24 
25  
26 
27 // app进入后台
28 
29 - (void)applicationDidEnterBackground:(UIApplication *)application {
30 
31    NSLog(@"%s",__func__);
32 
33     // 保存一些数据
34 
35     
36 
37 }
38 
39  
40 
41 // app即将进入前台的时候调用
42 
43 - (void)applicationWillEnterForeground:(UIApplication *)application {
44 
45     NSLog(@"%s",__func__);
46 
47 }
48 
49  
50 
51 // app即将获取焦点的时候
52 
53 // 当应用程序获取焦点的时候才能够与用户交互
54 
55 - (void)applicationDidBecomeActive:(UIApplication *)application {
56 
57     NSLog(@"%s",__func__);
58 
59 }
60 
61  
62 
63 // app关闭的时候调用
64 
65 - (void)applicationWillTerminate:(UIApplication *)application {
66 
67     
68 
69 }
70 
71  
72 
73 // 监听内存警告
74 
75 - (void)applicationDidReceiveMemoryWarning:(UIApplication *)application
76 
77 {
78 
79     NSLog(@"内存警告");
80 
81     // 清楚图片缓存
82 
83 }
84 
85  

 1     app.applicationIconBadgeNumber = 100;
 2 
 3     
 4 
 5     // 创建通知对象
 6 
 7     UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];
 8 
 9     
10 
11     
12 
13     // 注册用户通知
14 
15     [app registerUserNotificationSettings:settings];

 1     打电话
 2 
 3     UIApplication *app = [UIApplication sharedApplication];
 4 
 5     [app openURL:[NSURL URLWithString:@"tel://10086"]];
 6 
 7     
 8 
 9     发短信
10 
11     [app openURL:[NSURL URLWithString:@"sms://10086"]];
12 
13     
14 
15     发邮件
16 
17     [app openURL:[NSURL URLWithString:@"mailto://12345@qq.com"]];
18 
19     
20 
21     打开一个网页资源
22 
23     [app openURL:[NSURL URLWithString:@"http://ios.itcast.cn"]];
24 
25  

 1 - (void)loadView
 2 
 3 {
 4 
 5    
 6 
 7 }
 8 
 9  
10 
11 - (UIView *)view
12 
13 {
14 
15     if (_view == nil) {
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17         [self loadView];
18 
19         [self viewDidLoad];
20 
21     }
22 
23     return _view;
24 
25 }

 1     // 1.创建窗口
 2 
 3     self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
 4 
 5     
 6 
 7     // 设置窗口的颜色
 8 
 9     self.window.backgroundColor = [UIColor purpleColor];
10 
11     
12 
13     // 2.创建根控制器,在设置窗口的根控制器
14 
15     UIViewController *vc = [[UIViewController alloc] init];
16 
17     
18 
19     // 设置窗口的根控制器,底层会自动把根控制器的view添加到窗口上,并且让控制器的view有旋转功能
20 
21     self.window.rootViewController = vc;
22 
23     
24 
25     // 3.显示窗口
26 
27     // makeKeyAndVisible:让窗口成为应用程序的主窗口,并且显示窗口
28 
29     [self.window makeKeyAndVisible];
30 
31     
32 
33     return YES;
34 
35  

  1 /**
  2 
  3  *  通过一个frame来初始化一个UI控件
  4 
  5  */
  6 
  7 - (id)initWithFrame:(CGRect)frame;
  8 
  9  
 10 
 11 // YES:能够跟用户进行交互
 12 
 13 @property(nonatomic,getter=isUserInteractionEnabled) BOOL userInteractionEnabled;  // default is YES
 14 
 15  
 16 
 17 // 控件的一个标记(父控件可以通过tag找到对应的子控件)
 18 
 19 @property(nonatomic)                                 NSInteger tag;                // default is 0
 20 
 21  
 22 
 23 // 图层(可以用来设置圆角效果\阴影效果)
 24 
 25 @property(nonatomic,readonly,retain)                 CALayer  *layer;
 26 
 27  
 28 
 29 @end
 30 
 31  
 32 
 33 @interface UIView(UIViewGeometry)
 34 
 35 // 位置和尺寸(以父控件的左上角为坐标原点(0, 0))
 36 
 37 @property(nonatomic) CGRect            frame;
 38 
 39  
 40 
 41 // 位置和尺寸(以自己的左上角为坐标原点(0, 0))
 42 
 43 @property(nonatomic) CGRect            bounds;
 44 
 45  
 46 
 47 // 中点(以父控件的左上角为坐标原点(0, 0))
 48 
 49 @property(nonatomic) CGPoint           center;      
 50 
 51  
 52 
 53 // 形变属性(平移\缩放\旋转)
 54 
 55 @property(nonatomic) CGAffineTransform transform;   // default is CGAffineTransformIdentity
 56 
 57  
 58 
 59 // YES:支持多点触摸
 60 
 61 @property(nonatomic,getter=isMultipleTouchEnabled) BOOL multipleTouchEnabled;   // default is NO
 62 
 63 @end
 64 
 65  
 66 
 67 @interface UIView(UIViewHierarchy)
 68 
 69 // 父控件
 70 
 71 @property(nonatomic,readonly) UIView       *superview;
 72 
 73  
 74 
 75 // 子控件(新添加的控件默认都在subviews数组的后面, 新添加的控件默认都显示在最上面\最顶部)
 76 
 77 @property(nonatomic,readonly,copy) NSArray *subviews;
 78 
 79  
 80 
 81 // 获得当前控件所在的window
 82 
 83 @property(nonatomic,readonly) UIWindow     *window;
 84 
 85  
 86 
 87 // 从父控件中移除一个控件
 88 
 89 - (void)removeFromSuperview;
 90 
 91  
 92 
 93 // 添加一个子控件(可以将子控件插入到subviews数组中index这个位置)
 94 
 95 - (void)insertSubview:(UIView *)view atIndex:(NSInteger)index;
 96 
 97  
 98 
 99 // 交换subviews数组中所存放子控件的位置
100 
101 - (void)exchangeSubviewAtIndex:(NSInteger)index1 withSubviewAtIndex:(NSInteger)index2;
102 
103  
104 
105 // 添加一个子控件(新添加的控件默认都在subviews数组的后面, 新添加的控件默认都显示在最上面\最顶部)
106 
107 - (void)addSubview:(UIView *)view;
108 
109  
110 
111 // 添加一个子控件view(被挡在siblingSubview的下面)
112 
113 - (void)insertSubview:(UIView *)view belowSubview:(UIView *)siblingSubview;
114 
115  
116 
117 // 添加一个子控件view(盖在siblingSubview的上面)
118 
119 - (void)insertSubview:(UIView *)view aboveSubview:(UIView *)siblingSubview;
120 
121  
122 
123 // 将某个子控件拉到最上面(最顶部)来显示
124 
125 - (void)bringSubviewToFront:(UIView *)view;
126 
127  
128 
129 // 将某个子控件拉到最下面(最底部)来显示
130 
131 - (void)sendSubviewToBack:(UIView *)view;
132 
133  
134 
135 /**系统自动调用(留给子类去实现)**/
136 
137 - (void)didAddSubview:(UIView *)subview;
138 
139 - (void)willRemoveSubview:(UIView *)subview;
140 
141  
142 
143 - (void)willMoveToSuperview:(UIView *)newSuperview;
144 
145 - (void)didMoveToSuperview;
146 
147 - (void)willMoveToWindow:(UIWindow *)newWindow;
148 
149 - (void)didMoveToWindow;
150 
151 /**系统自动调用**/
152 
153  
154 
155 // 是不是view的子控件或者子控件的子控件(是否为view的后代)
156 
157 - (BOOL)isDescendantOfView:(UIView *)view;  // returns YES for self.
158 
159  
160 
161 // 通过tag获得对应的子控件(也可以或者子控件的子控件)
162 
163 - (UIView *)viewWithTag:(NSInteger)tag;     // recursive search. includes self
164 
165  
166 
167 /**系统自动调用(留给子类去实现)**/
168 
169 // 控件的frame发生改变的时候就会调用,一般在这里重写布局子控件的位置和尺寸
170 
171 // 重写了这个写方法后,一定调用[super layoutSubviews];
172 
173 - (void)layoutSubviews;
174 
175  
176 
177 @end
178 
179  
180 
181 @interface UIView(UIViewRendering)
182 
183 // YES : 超出控件边框范围的内容都剪掉
184 
185 @property(nonatomic)                 BOOL              clipsToBounds;
186 
187  
188 
189 // 背景色
190 
191 @property(nonatomic,copy)            UIColor          *backgroundColor; // default is nil
192 
193  
194 
195 // 透明度(0.0~1.0)
196 
197 @property(nonatomic)                 CGFloat           alpha;                      // default is 1.0
198 
199  
200 
201 // YES:不透明  NO:透明
202 
203 @property(nonatomic,getter=isOpaque) BOOL              opaque;                     // default is YES
204 
205  
206 
207 // YES : 隐藏  NO : 显示
208 
209 @property(nonatomic,getter=isHidden) BOOL              hidden;
210 
211  
212 
213 // 内容模式
214 
215 @property(nonatomic)                 UIViewContentMode contentMode;                // default is UIViewContentModeScaleToFill
216 
217 @end
218 
219  
220 
221  

 1 @interface UIView(UIViewAnimationWithBlocks)
 2 
 3 + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion;
 4 
 5 + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion;
 6 
 7  
 8 
 9 + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations;
10 
11 + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay usingSpringWithDamping:(CGFloat)dampingRatio initialSpringVelocity:(CGFloat)velocity options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion;
12 
13 @end
14 
15  
16 
17