一,效果图。
images/loading.gif' data-original="http://images2015.cnblogs.com/blog/337518/201510/337518-20151019154120520-465589141.jpg" width="218" height="400" />
二,工程图。
三,代码。
ViewController.m
- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. //TextField UITextField *textField=[[UITextField alloc]initWithFrame:CGRectMake(20, 100, 100, 200)]; textField.backgroundColor=[UIColor redColor]; textField.text=@"123"; [self.view addSubview:textField]; NSLog(@"判断textField里面是否为空%i",[self textFieldIsNOTEmpt:textField]); }//判断textField里面是否有空-(BOOL)textFieldIsNOTEmpt:(UITextField *)textField{ if ([textField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]].length!=0){ return YES; }else { return NO; }}
原标题:【代码笔记】判断textField里面是否有空
关键词:ie