一、出现问题场景
初始化UITextView,设置frame位当前控制器view的bounds大小,点击TextView导航栏出现上移问题.
二、解决方法

- (void)viewWillAppear:(BOOL)animated { 

 [superviewWillAppear:animated]; 

 [IQKeyboardManager sharedManager].enable =NO;

} 

 - (void)viewWillDisappear:(BOOL)animated { 

 [superviewWillDisappear:animated];

 [IQKeyboardManager sharedManager].enable =YES;

}

以亲测,问题已解决,方法简单有效.