#import// block格式: 返回值(^block名字)(参数)

// (1)定义block

typedef void(^myBlcok)(NSArray *array);

@interface ZQResignVC : UIViewController

// (2)申明block属性

@property (strong, nonatomic) myBlcok block;

@end

// 用block存储值

@implementation ZQResignVC

NSArray *array=[[NSArray alloc]initWithObjects:_userNameText.text,_passWordText.text ,nil];

if (self.block)

{

 self.block(array);

}

// 拿到block的值

ZQResignVC *resignVC=[[ZQResignVC alloc]init];

//直接

resignVC.block=^(NSArray *array){

_userNameText.text=array[0];

_passWordText.text=array[1];

};