实现方法:
1)将输入框的代理设置为self
(在lb文件中将输入框的delegate设置为File’s Owner 。或者使用代码textField.delegate = self;
2)将输入框所对应的ViewController.h设置实现了UITextFieldDelegate协议
在ViewController.m文件中实现UITextFieldDelegate的三个方法即可:
//开始编辑输入框的时候,软键盘出现,执行此事件 -(void)textFieldDidBeginEditing:(UITextField *)textField { CGRect frame = textField.frame; int offset = frame.origin.y + 32 - (self.view.frame.size.height - 216.0);//键盘高度216 NSTimeInterval animationDuration = 0.30f; [UIView beginAnimations:@"ResizeForKeyboard" context:nil]; [UIView setAnimationDuration:animationDuration]; //将视图的Y坐标向上移动offset个单位,以使下面腾出地方用于软键盘的显示 if(offset > 0) self.view.frame = CGRectMake(0.0f, -offset, self.view.frame.size.width, self.view.frame.size.height); [UIView commitAnimations]; } //当用户按下return键或者按回车键,keyboard消失 -(BOOL)textFieldShouldReturn:(UITextField *)textField { [textField resignFirstResponder]; return YES; } //输入框编辑完成以后,将视图恢复到原始状态 -(void)textFieldDidEndEditing:(UITextField *)textField { self.view.frame =CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); }
方法很简单吧?请注意一定不要忘记设置输入框的代理delegate哦