###一、属性传值
A界面->B界面传值
B_界面.h文件(接收者)1
2
3
4 //////////B界面.h//////////
//1.声明属性
@property (nonatomic, copy) NSString *bString;
A_界面.m文件(发送者)1
2
3
4
5
6 //////////A界面.m//////////
//2.属性传值
BViewController *bVC = [BViewController new];
bVC.bString = @"A";
[self.navigationController pushViewController:bVC animated:YES];
B_界面.m文件(接收者)1
2
3
4
5 //////////B界面.m//////////
//3.结果
NSLog(@"A界面→B界面:%@", self.bString);
//输出: A界面→B界面:A