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>外地条码>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>外地条码>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?
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>外地条码>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>外地条码>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?
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。
您可以这样作。
NSLog(@"Bool Value: %@",(isAplhaNumericOnly?@"YES":@"NO"));
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