I am writing my UI app to use Navigation architecture components, so I need to pass an ArrayList Object that implements Parcelable, but I couldn't find any information about it.

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I am writing my UI app to use Navigation architecture components, so I need to pass an ArrayList Object that implements Parcelable, but I couldn't find any information about it.

android - 传递数组列表 between Fragments in NavigationComponents

I am writing my UI app to use Navigation architecture components, so I need to pass an ArrayList Object that implements Parcelable, but I couldn't find any information about it.

问题描述

I am writing my UI app to use Navigation architecture components, so I need to pass an ArrayList Object that implements Parcelable, but I couldn't find any information about it.

I would appreciate if you would help.

This is a hard-coded version that can execute MessageBoxA

  const char* title = "hello";
  const char* content = "world";
  size_t titleLen = strlen(title) + 1;
  size_t contentLen = strlen(content) + 1;
  
  BYTE* newmem = (BYTE*)VirtualAllocEx(gc.hProcess, 0, 1024, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
  printf("newmem: %x\n", newmem);

  DWORD titleAddr = (DWORD)newmem;
  DWORD contentAddr = titleAddr + titleLen;
  DWORD funAddr = contentAddr + contentLen;

  WriteProcessMemory(gc.hProcess, (LPVOID)titleAddr, (LPCVOID)title, titleLen, 0);
  WriteProcessMemory(gc.hProcess, (LPVOID)contentAddr, (LPCVOID)content, contentLen, 0);

    /*
     3 00000000 6A00                        push 0
     4 00000002 6878563412                  push 0x12345678
     5 00000007 6878563412                  push 0x12345678
     6 0000000C 6A00                        push 0
     7 0000000E E800000000                  call MessageBoxA
     8 00000013 C3                          ret
    */
    BYTE funcode[] = {
     0x6A, 0x00,
     0x68, 0x00,0x00,0x00,0x00,
     0x68, 0x00,0x00,0x00,0x00,
     0x6A, 0x00,
     0xE8, 0x00,0x00,0x00,0x00,
     0xC3
    };
  
  DWORD pMessageBoxA = 0x76E013D0;
  DWORD MessageBoxA = pMessageBoxA - (funAddr + 0xE) - 5;
  memcpy_s(funcode + 0x3, 4, &titleAddr, 4);
  memcpy_s(funcode + 0x8, 4, &contentAddr, 4);
  memcpy_s(funcode + 0xF, 4, &MessageBoxA, 4);

  WriteProcessMemory(gc.hProcess, (LPVOID)funAddr, funcode, sizeof(funcode), 0);

  HANDLE hThread = CreateRemoteThread(gc.hProcess, 0, 0,
    (LPTHREAD_START_ROUTINE)funAddr, 0, 0, 0);

  WaitForSingleObject(hThread, INFINITE);
  VirtualFreeEx(gc.hProcess, newmem, 0, MEM_RELEASE);
  CloseHandle(hThread);

标签： androidandroid-fragmentsnavigation

解决方案

您暂时无法通过安全参数共享数据，因为库不支持它。但是，您可以使用这样的传统方法：

如果您想将 ArrayList 数据发送FragmentA到 FragmentB：

在FragmentA：

val myParcelizedObjectArrayList = ArrayList<MyParcelisedObject>()
val bundle = bundleOf("SOME_BUNDLE_KEY" to myParcelizedObjectArrayList)

findNavController().navigate(R.id.action_fragmentA_to_fragmentB, bundle)

在FragmentB's onCreate() 中可以这样获取列表：

val myArrayList = arguments?.getParcelableArrayList<MyParcelisedObject>("SOME_BUNDLE_KEY")

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