直接上代码:
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
//得到输入框的内容
NSString * textfieldContent = [textField.text stringByReplacingCharactersInRange:range withString:string];
if (textField == self.passWordTF && textField.isSecureTextEntry ) {
textField.text = textfieldContent;
return NO;
}
return YES;
}
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