【代码笔记】判断textField里面是否有空

一，效果图。

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; } }