代码块路径 （注意：如果你的xcode没有添加过代码块，那你是找不到这个文件夹的）

~/Library/Developer/Xcode/UserData/CodeSnippets

UILabel *<#label#> = [[UILabel alloc] initWithFrame:CGRectMake(<#CGFloat x#>, <#CGFloat y#>, <#CGFloat width#>, <#CGFloat height#>)];

<#label#>.font = [UIFont systemFontOfSize:<#(CGFloat)#>];

<#label#>.textColor = [UIColor colorWithRed:<#(CGFloat)#> green:<#(CGFloat)#> blue:<#(CGFloat)#> alpha:<#(CGFloat)#>];

<#label#>.text =@"<#text#>";

<#label#>.textAlignment = <#NSTextAlignment#>;

<#label#>.numberOfLines = <#CGFloat#>;

[self.view addSubview:<#label#>];

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UIButton *<#button#> = [UIButton buttonWithType:UIButtonTypeCustom];

<#button#>.frame = CGRectMake(<#CGFloat x#>, <#CGFloat y#>, <#CGFloat width#>, <#CGFloat height#>);

[<#button#> setTitle:<#(nullable NSString *)#> forState:UIControlStateNormal];

[<#button#> addTarget:selfaction:@selector(<#selector#>) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:<#button#>];

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UITextField *<#textField#> = [[UITextField alloc] initWithFrame:CGRectMake(<#CGFloat x#>, <#CGFloat y#>, <#CGFloat width#>, <#CGFloat height#>)];

<#textField#>.borderStyle = <#UITextBorderStyle#>;

<#textField#>.placeholder =@"<#NSString#>";

<#textField#>.clearButtonMode = <#UITextFieldViewModeWhileEditing#>;

<#textField#>.returnKeyType = <#UIReturnKeySend#>;

[self.view addSubview:<#textField#>];

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UIImageView *<#imageView#> = [[UIImageView alloc] initWithFrame:CGRectMake(<#CGFloat x#>, <#CGFloat y#>, <#CGFloat width#>, <#CGFloat height#>)];

<#imageView#>.image = [UIImage imageNamed:<#(nonnull NSString *)#>];

[self.view addSubview:<#imageView#>];

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UIBarButtonItem *<#item#> = [[UIBarButtonItem alloc] initWithTitle:<#(nullable NSString *)#>

style:UIBarButtonItemStylePlain

target:self

action:@selector(<#selector#>)];

[self.navigationController.navigationItem setRightBarButtonItem:<#item#>];

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UIAlertController *<#alert#> = [UIAlertController alertControllerWithTitle:<#(nullable NSString *)#>

message:<#(nullable NSString *)#>

preferredStyle:UIAlertControllerStyleActionSheet];

UIAlertAction*sureAction = [UIAlertActionactionWithTitle:@"确定"

style:UIAlertActionStyleDefault

handler:^(UIAlertAction*_Nonnullaction) {

<#code#>

}];

UIAlertAction*cancelAction = [UIAlertActionactionWithTitle:@"取消"

style:UIAlertActionStyleDefault

handler:nil];

[<#alert#> addAction:sureAction];

[<#alert#> addAction:cancelAction];

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<#view#>.layer.cornerRadius = <#CGFloat#>;

<#view#>.layer.borderWidth = <#CGFloat#>;

<#view#>.layer.borderColor = [UIColor colorWithRed:<#(CGFloat)#>/255.0

green:<#(CGFloat)#>/255.0

blue:<#(CGFloat)#>/255.0

alpha:1];