iOS 判斷字串是否為空字串 && 判斷字串包含那個字元
阿新 • • 發佈:2019-02-16
- (BOOL) isBlankString:(NSString *)string { if (string == nil || string == NULL) { return YES; } if ([string isKindOfClass:[NSNull class]]) { return YES; } if ([[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length]==0) { return YES; } return NO; }
//判斷roadTitleLab.text 是否含有qingjoin
if([roadTitleLab.text rangeOfString:@"qingjoin"].location !=NSNotFound)//_roaldSearchText
{
NSLog(@"yes");
}
else
{
NSLog(@"no");
}