ios开发中可能用到的功能

1:调用系统声音(拍照声音)

a:在 工程下的target - Build Phases –Link Binary With Libraries –添加AudioToolbox.framework

b:在头文件中引入系统库 import<AudioToolbox/AudioToolbox.h>

c:函数中调用,更多声音 参考这里

AudioServicesPlaySystemSound(1108);    

2:获取用户复制的内容(像淘宝一样)

NSString *string = [UIPasteboard generalPasteboard].string;

3:统一收起键盘

[[[UIApplication sharedApplication] keyWindow] endEditing:YES];    

4:获取某个字体的高度

font.lineHeight;    

5:移除所有子视图

[[someView subviews]makeObjectsPerformSelector:@selector(removeFromSuperview)];    

6: 让label在指定位置换行

label.numberOfLines = 0; 

 label.text = @"此处\n换行";

7:摇一摇功能    

a、打开摇一摇功能    

[UIApplication sharedApplication].applicationSupportsShakeToEdit = YES;     

b:让需要摇动的控制器成为第一响应者

[self becomeFirstResponder];

c、实现以下方法

 // 开始摇动 - (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event

// 取消摇动 - (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event

// 摇动结束 - (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event

8:在状态栏增加网络请求的菊花，类似safari加载网页的时候状态栏菊花

sharedApplication].networkActivityIndicatorVisible = YES;    

9:长按复制

- (void)viewDidLoad{ 

 [self.view addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(pasteBoard:)]];

 } 

 - (void)pasteBoard:(UILongPressGestureRecognizer *)longPress {

 if(longPress.state == UIGestureRecognizerStateBegan) {

 UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];

 pasteboard.string = @"需要复制的文本"; }

 }

10:设置textfield左边的间距,不通过自定义的方式

CGRect frame = textInputTitle.frame;

frame.size.width = 10;// 距离左侧的距离

 UIView *leftview = [[UIView alloc] initWithFrame:frame];

textInputTitle.leftViewMode = UITextFieldViewModeAlways;

textInputTitle.leftView = leftview;

上面是想要自己保存的一些东西，其他功能请参考这里