1，动态获得textfield 的输入内容
在- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string添加如下代码就可以获得全部的代码。
NSString *text = [textField.text stringByReplacingCharactersInRange:range withString:string];
慢慢添加吧
2,//只允许数字和小数点输入
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSString *allText = [textField.text stringByReplacingCharactersInRange:range withString:string];
NSUInteger lengthOfString = string.length;
if ([string isEqualToString:@"."]) {
return YES;
}
for (NSInteger loopIndex = 0; loopIndex < lengthOfString; loopIndex++) {//只允许数字输入
unichar character = [string characterAtIndex:loopIndex];
if (character < 48){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"只允许输入数字位数" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alert show];
return NO; // 48 unichar for 0
}
if (character > 57){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"只允许输入数字位数" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
[alert show];
return NO; // 57 unichar for 9
}
}
return YES;
}