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• 如何验证该数字是否为字母数字
原标题:How to validate a string whether it is alphanumeric

它可能简单,但我无法找到解决办法。 在我的申请中,我有许多<代码>UIText Field。 例如,我要说的是<代码>UIText Field,称text Field。 当我进入<条码>外地时,我应确认体格是字母数字。 我如何能够这样做?

除<代码>外,我还有一个纽州。 在进入<条码>外地后,当我报到时,我应确认所登载体是否为字母数字,用<条码>表示。 因此,任何人都能够帮助我以某种实例或样本法解决这一问题?

最佳回答

你们可以做以下努力:

NSString *string = myTextField.text;
NSCharacterSet *alphanumericSet = [NSCharacterSet alphanumericCharacterSet];
NSCharacterSet *numberSet = [NSCharacterSet decimalDigitCharacterSet];
BOOL isAplhaNumericOnly= [[string stringByTrimmingCharactersInSet:alphanumericSet] isEqualToString:@""] && ![[string stringByTrimmingCharactersInSet:numberSet] isEqualToString:@""];

只有当你窒息是甲型数字而不是数字时,这种ool才会恢复。

EDITED:-

Tolog bool-

NSLog(@"isAplhaNumericOnly: %d",isAplhaNumericOnly);

从这一职能返回:

if(isAplhaNumericOnly) {
    return;
}

另外,如果你想显示某种警示,你也可以撰写上述报警表。

问题回答

您可以这样作。

NSLog(@"Bool Value: %@",(isAplhaNumericOnly?@"YES":@"NO"));




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