判断 UITextField 输入的全是空格
2016-03-25 本文已影响562人
K__M
UITextField *tf = [alertView textFieldAtIndex:0];//获得输入框
if(self.selectArray.count < 6)
{
NSString *temp = [tf.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
//看剩下的字符串的长度是否为零
if ([temp length]== 0) {
[UIAlertView alertViewWithTitle:@"请输入标签" message:@"" cancelButtonTitle:@"确定" otherButtonTitles:nil onDismiss:^(NSInteger buttonIndex) {
} onCancel:^{
}];
return;
}
