输入时如何更改UITextField文本的值?
换句话说:
当我输入1时应显示1
当我键入10它应该显示10
当我输入100它应该显示100
但
当我键入1000,它应该显示1000
你能给任何想法吗?
解决方法
向文本字段控件添加“textFieldDidChange”通知方法.
[textField addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged]; -(void)textFieldDidChange:(UITextField *)theTextField { NSLog(@"text changed: %@",theTextField.text); NSString *textFieldText = [theTextField.text stringByReplacingOccurrencesOfString:@"," withString:@""]; NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init]; [formatter setNumberStyle:NSNumberFormatterDecimalStyle]; NSString *formattedOutput = [formatter stringFromNumber:[NSNumber numberWithInt:[textFieldText integerValue]]]; textField.text=formattedOutput; }