摘要：
typedefstruct Test{int tag; float x; float y;}Test; Test test1; test1.tag = 1; test1.x = 2; test1.y = 3; NSValue* value_test = [NSValue value:&test1 withObjCType:@encode(Test)];//对结构体进行封装 Test test2;//声明test2，为了得到test1的值 [value_test getValue:&test2];//同类型赋值 NSLog(@"%s",@encode(Test 阅读全文