本文介绍了退出AlertView中存在的文本字段的键盘的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在alertview上有三个文本字段，我将键盘设置为decimalType，
I have three text fields on an alertview, I set keyboard as decimalType ,
- (IBAction)heightMethod:(id)sender
{
self.utextfield = [[UITextField alloc] initWithFrame:CGRectMake(12.0, 45.0, 260.0, 25.0)]; utextfield.placeholder = @" Centimeters";
self.utextfield.delegate=self;
self.utextfield.tag=3;
[ self.utextfield setBackgroundColor:[UIColor whiteColor]];
[self.alertHeight addSubview: self.utextfield];
// Adds a password Field
self.ptextfield = [[UITextField alloc] initWithFrame:CGRectMake(40, 80.0, 80, 25.0)]; ptextfield.placeholder = @" Feet";
self.ptextfield.delegate=self;
self.ptextfield.tag=4;
[self.ptextfield setBackgroundColor:[UIColor whiteColor]];
[self.alertHeight addSubview:self.ptextfield];
self.ptextfieldInches = [[UITextField alloc] initWithFrame:CGRectMake(140, 80.0, 80, 25.0)]; ptextfieldInches.placeholder = @" Inches";
self.ptextfieldInches.delegate=self;
self.ptextfieldInches.tag=5;
[ptextfieldInches setBackgroundColor:[UIColor whiteColor]];
[self.alertHeight addSubview:ptextfieldInches];
[self.utextfield setKeyboardType:UIKeyboardTypeDecimalPad];
[self.ptextfieldInches setKeyboardType:UIKeyboardTypeDecimalPad];
[self.ptextfield setKeyboardType:UIKeyboardTypeDecimalPad];
[self.alertHeight show];
}
当我点击任何文本字段时，键盘只会退出两次，但是第三次它不会退出.我在alertview的delgate方法中添加了resignfirst响应器方法，请看这里
As I tap any textfield, keyboard resign only two times, but on third time its not resigning . I added resignfirst responder method inside the delgate method of alertview , look here
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
推荐答案
创建 UITextField 的iVar，并在侧面的 UITextFieldDelegate 方法 textFieldShouldBeginEditing 中进行分配.希望它能工作.
Create iVar of UITextField and assign in side UITextFieldDelegate method textFieldShouldBeginEditing. Hopefully it should work.
像下面这样:
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
textField = iVar;
}
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