ios学习笔记

界面跳转

let vr = MyViewController(nibName: "MyViewController", bundle: nil)
vc.labelContent = input.text
self.presentModalViewController(vc, animated: true);

        //将我们的storyBoard实例化，“Main”为StoryBoard的名称
        UIStoryboard *mainStoryBoard = [UIStoryboard storyboardWithName:@"Me" bundle:nil];

        //将第二个控制器实例化，"SecondViewController"为我们设置的控制器的ID
        ReceiptAddressVC *vc = [mainStoryBoard instantiateViewControllerWithIdentifier:@"ReceiptAddressVC"];
        [self.navigationController pushViewController:vc animated:YES];

返回到上一页面

复制文本到剪切板

UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.string = self.label1.text;pasteboard.string = self.label1.text;

方法二

/// 测试剪切板，实现代码拷贝内容
    func testPasteBoard(str:String) {
        //就这两句话就实现了
        let paste = UIPasteboard.general
        paste.string = str
    }

获取剪切板内容

监听剪切板变化

2，复制字符串数组

UIPasteboard.general.strings = ["hellow", "hangge.com"]

3，复制图片

let image = UIImage(named: "logo.png")
UIPasteboard.general.image = image

websocket连接

自定义view

关闭软键盘

self.userNameTF = [[UITextField alloc] init];
[self.view addSubview:self.userNameTF];
//在需要关闭键盘时调用
[self.userNameTF resignFirstResponder];

方法二
加入如下方法：

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [usernameTextFiled resignFirstResponder ];
    [passwdTextFiled resignFirstResponder ];
}

swift代码
方法一
对单个的UITextField调用resignFirstResponder方法， 使其失去第一响应者

sender.resignFirstResponder()

方法二
对UIViewController，重写touchesBegan， 并调用endEditing方法

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        view.endEditing(true)
    }

使用流布局

使用滚动布局

解析json

http网络请求
get请求

post请求

显示gif图片

保存数据 读取数据

image显示网络图片

storyboard界面跳转

单文件界面跳转