在AppDelegate中导入头文件 #import "IQKeyboardManager.h" 在didFinishLaunch中进行全局设置:

//!< set keyboard
    [IQKeyboardManager sharedManager].enable = YES;
    
    [IQKeyboardManager sharedManager].shouldResignOnTouchOutside = YES;  
      

然后在整个项目中就不用再担心键盘遮挡的问题了.