在开发中，可能会遇到一个页面好多textField或者textView的情况，键盘弹出时，会遮盖下面的输入框，使我们看不到内容，以往我都是测量当前textfield在屏幕中的位置，current_y,及current_height，计算当前键盘的height是否比当前textfield的下方位置要高，如果高的话，则需调整self.view整体位置。详见文章链接 https://www.jianshu.com/p/82881c4659b8 这个方法比较麻烦，现在我们引入IQKeyboardManger就能轻松解决我们的问题
1 . 首先导入IQKeyboardManager框架
$ pod 'IQKeyboardManager'
2.安装完成之后，引入文件，最好放在项目的PrefixHeader文件中
#import "IQKeyboardManager.h"
3.创建如图1 的 几个textField
输入文字时，键盘会遮挡部分输入框
UITextField * tf = [[UITextField alloc]initWithFrame:CGRectMake(100, 100, 200, 60)];
tf.placeholder = @"please input placeholder words.";
UITextField * tf2 = [[UITextField alloc]initWithFrame:CGRectMake(100, 240, 200, 60)];
tf2.placeholder = @"please input placeholder words.";
UITextField* tf3 = [[UITextFieldalloc]initWithFrame:CGRectMake(100,320,200,60)];
tf3.placeholder = @"please input placeholder words.";
UITextField* tf4 = [[UITextFieldalloc]initWithFrame:CGRectMake(100,400,200,60)];
tf4.placeholder = @"please input placeholder words.";
UITextField * tf5 = [[UITextField alloc]initWithFrame:CGRectMake(100, 480, 200, 60)];
tf5.placeholder = @"please input placeholder words.";
tf.borderStyle = UITextBorderStyleRoundedRect;
tf2.borderStyle = UITextBorderStyleRoundedRect;
tf3.borderStyle = UITextBorderStyleRoundedRect;
tf4.borderStyle = UITextBorderStyleRoundedRect;
tf5.borderStyle = UITextBorderStyleRoundedRect;
[self.viewaddSubview:tf];
[self.viewaddSubview:tf5];
[self.viewaddSubview:tf2];
[self.viewaddSubview:tf3];
[self.viewaddSubview:tf4];
3. 具体设置如下
//设置IQKeyboardManager
//1 控制自动键盘功能启用与否，默认为YES （只要项目中导入了此框架，不用设置下面代码，也会自动开启 )
[IQKeyboardManager sharedManager].enable = YES;
//2 键盘弹出时，点击背景，键盘回收
[IQKeyboardManager sharedManager].shouldResignOnTouchOutside = YES;
//3 隐藏键盘上的toolbar,默认是开启的
[IQKeyboardManager sharedManager].enableAutoToolbar = NO;
//4 如果某一个m文本框确实不需要键盘上面的toolbar(置空即可)
tf.inputAccessoryView = [[UIView alloc]init];
//5. 如果某个页面一进来不想让键盘弹出
- (void)viewWillAppear:(BOOL)animated{
[superviewWillAppear:animated];
//关闭自动键盘功能
[IQKeyboardManager sharedManager].enable = YES;
}
- (void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
//开启自动键盘功能
[IQKeyboardManager sharedManager].enable = YES;
}
结果如下，键盘不会遮挡输入框，页面整体自动上调，大功告成！！！
