我们在开发注册界面的时候,最后几个注册条件常常容易被系统弹出的键盘遮挡,如下图:
可以看见,邮箱条件被遮挡掉了,怎么解决呢?我是通过UITextField的代理加计算偏移量:
- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. self.emailTextField.delegate = self; } - (void)textFieldDidBeginEditing:(UITextField *)textField{ // 1.取得被遮挡的邮箱的textField的frame CGRect frame = self.emailTextField.frame; // 2.计算被遮挡的textField的bottom代表的高度(Y坐标) 与 能不被键盘遮挡的最大高度(Y坐标) 的距离 int offset = frame.origin.y + 32 - (self.view.frame.size.height - 216); [UIView animateWithDuration:0.3 animations:^{ if (offset > 0) { // 让整个view向上偏移差距 self.view.frame = CGRectMake(0, -offset, self.view.frame.size.width, self.view.frame.size.height); } }]; } - (void)textFieldDidEndEditing:(UITextField *)textField{ [UIView animateWithDuration:0.3 animations:^{ // 编辑结束后重置为原来的 self.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); }]; }结果图: