Android - bool读取错误

[AtlantisFaded]

平台：Android

背景：隐私弹窗的功能，使用mmkv，bool标志

错误case描述：隐私弹窗弹出后，已经同意后，在已经设置为true的情况后，下一次启动依然读取到的默认值（false）

日志（对应下面的关键代码操作）：

关键代码：

1. 已经在application正确初始化：
   
2. 数值读取：
   
3. onCreate中判断：
   
4. 隐私弹窗点击同意后设置bool:
   

[AtlantisFaded]

implementation 'com.tencent:mmkv:1.2.14'

[AtlantisFaded]

其他的bool都正确，唯独这个隐私弹窗的值错误，跟bool值无关，试过了int，依然不正确。
怀疑是跟启动时机有关，在onCreate()中读取不准，但是延迟5s后读取，依然不准，比较玄学了。。

[lingol]

You should provide logs of MMKV.

[lingol]

Most of the case, you could solve it by setting MULTI_PROCESS_MODE if haven't.
If that doesn't solve your problem, you could start a small demo project, add the privacy policy set/get logic and see if it still happens.

[AtlantisFaded]

MMKV Log（中间分割线上面是初次启动并设置true，下面是第二次启动）

---------------------------- PROCESS STARTED (1398) for package com.atlantis.launcher ----------------------------
2022-12-16 20:18:47.389 1398-1398 MMKV com.atlantis.launcher I Enable checkProcessMode()
2022-12-16 20:18:47.393 1398-1398 MMKV com.atlantis.launcher I native-bridge.cpp:104::JNI_OnLoad current API level = 28, libc++_shared=0
2022-12-16 20:18:47.394 1398-1398 MMKV com.atlantis.launcher I MMKV.cpp:165::initialize version v1.2.14, page size 4096, arch arm64-v8a
2022-12-16 20:18:47.394 1398-1398 MMKV com.atlantis.launcher I MMKV.cpp:176::initialize armv8 AES instructions is supported
2022-12-16 20:18:47.394 1398-1398 MMKV com.atlantis.launcher I MMKV.cpp:184::initialize armv8 CRC32 instructions is supported
2022-12-16 20:18:47.394 1398-1398 MMKV com.atlantis.launcher I MMKV.cpp:207::initializeMMKV root dir: /data/user/0/com.atlantis.launcher/files/mmkv
2022-12-16 20:18:47.598 1398-1398 MMKV com.atlantis.launcher I MemoryFile.cpp:97::open open fd[0x59], /data/user/0/com.atlantis.launcher/files/mmkv/mmkv.default
2022-12-16 20:18:47.599 1398-1398 MMKV com.atlantis.launcher I MemoryFile.cpp:97::open open fd[0x5a], /data/user/0/com.atlantis.launcher/files/mmkv/mmkv.default.crc
2022-12-16 20:18:47.599 1398-1398 MMKV com.atlantis.launcher I <MMKV_IO.cpp:81::loadFromFile> loading [mmkv.default] with 0 actual size, file size 4096, InterProcess 0, meta info version:0
2022-12-16 20:18:47.599 1398-1398 MMKV com.atlantis.launcher I <MMKV_IO.cpp:130::loadFromFile> loaded [mmkv.default] with 0 key-values
2022-12-16 20:18:47.624 1398-1398 MMKV com.atlantis.launcher I MemoryFile.cpp:97::open open fd[0x5b], /data/user/0/com.atlantis.launcher/files/mmkv/UserConfig
2022-12-16 20:18:47.624 1398-1398 MMKV com.atlantis.launcher I MemoryFile.cpp:97::open open fd[0x5c], /data/user/0/com.atlantis.launcher/files/mmkv/UserConfig.crc
2022-12-16 20:18:47.624 1398-1398 MMKV com.atlantis.launcher I <MMKV_IO.cpp:81::loadFromFile> loading [UserConfig] with 0 actual size, file size 4096, InterProcess 1, meta info version:0
2022-12-16 20:18:47.624 1398-1398 MMKV com.atlantis.launcher I <MMKV_IO.cpp:130::loadFromFile> loaded [UserConfig] with 0 key-values
2022-12-16 20:18:55.256 1398-1398 MMKV com.atlantis.launcher I <MMKV_IO.cpp:451::writeActualSize> [UserConfig] increase sequence to 1, crc 1285129681, actualSize 4
2022-12-16 20:18:55.341 1398-1398 MMKV com.atlantis.launcher I <MMKV_IO.cpp:451::writeActualSize> [mmkv.default] increase sequence to 1, crc 1285129681, actualSize 4
---------------------------- PROCESS ENDED (1398) for package com.atlantis.launcher ----------------------------
---------------------------- PROCESS STARTED (2214) for package com.atlantis.launcher ----------------------------
2022-12-16 20:19:34.953 2214-2214 MMKV com.atlantis.launcher I Enable checkProcessMode()
2022-12-16 20:19:34.956 2214-2214 MMKV com.atlantis.launcher I native-bridge.cpp:104::JNI_OnLoad current API level = 28, libc++_shared=0
2022-12-16 20:19:34.957 2214-2214 MMKV com.atlantis.launcher I MMKV.cpp:165::initialize version v1.2.14, page size 4096, arch arm64-v8a
2022-12-16 20:19:34.957 2214-2214 MMKV com.atlantis.launcher I MMKV.cpp:176::initialize armv8 AES instructions is supported
2022-12-16 20:19:34.957 2214-2214 MMKV com.atlantis.launcher I MMKV.cpp:184::initialize armv8 CRC32 instructions is supported
2022-12-16 20:19:34.957 2214-2214 MMKV com.atlantis.launcher I MMKV.cpp:207::initializeMMKV root dir: /data/user/0/com.atlantis.launcher/files/mmkv
2022-12-16 20:19:35.139 2214-2214 MMKV com.atlantis.launcher I MemoryFile.cpp:97::open open fd[0x58], /data/user/0/com.atlantis.launcher/files/mmkv/mmkv.default
2022-12-16 20:19:35.139 2214-2214 MMKV com.atlantis.launcher I MemoryFile.cpp:97::open open fd[0x59], /data/user/0/com.atlantis.launcher/files/mmkv/mmkv.default.crc
2022-12-16 20:19:35.139 2214-2214 MMKV com.atlantis.launcher I <MMKV_IO.cpp:81::loadFromFile> loading [mmkv.default] with 108 actual size, file size 4096, InterProcess 0, meta info version:3
2022-12-16 20:19:35.139 2214-2214 MMKV com.atlantis.launcher I <MMKV_IO.cpp:86::loadFromFile> loading [mmkv.default] with crc 329900609 sequence 1 version 3
2022-12-16 20:19:35.139 2214-2214 MMKV com.atlantis.launcher I <MMKV_IO.cpp:130::loadFromFile> loaded [mmkv.default] with 5 key-values
2022-12-16 20:19:35.164 2214-2214 MMKV com.atlantis.launcher I MemoryFile.cpp:97::open open fd[0x5b], /data/user/0/com.atlantis.launcher/files/mmkv/UserConfig
2022-12-16 20:19:35.164 2214-2214 MMKV com.atlantis.launcher I MemoryFile.cpp:97::open open fd[0x5c], /data/user/0/com.atlantis.launcher/files/mmkv/UserConfig.crc
2022-12-16 20:19:35.164 2214-2214 MMKV com.atlantis.launcher I <MMKV_IO.cpp:81::loadFromFile> loading [UserConfig] with 305 actual size, file size 4096, InterProcess 1, meta info version:3
2022-12-16 20:19:35.164 2214-2214 MMKV com.atlantis.launcher I <MMKV_IO.cpp:86::loadFromFile> loading [UserConfig] with crc 3594725849 sequence 1 version 3
2022-12-16 20:19:35.164 2214-2214 MMKV com.atlantis.launcher I <MMKV_IO.cpp:130::loadFromFile> loaded [UserConfig] with 9 key-values

[AtlantisFaded]

以上log是基于设置了MULTI_PROCESS_MODE的情况下

不知道我使用的对不对，另外应用是单进程app。

感谢回复，之后有时间会将关键代码提取出来，做一个单独的demo，再看看结果。目前通过其他的bool绕过了这个问题（其他bool是正确的）。

[lingol]

You should never store mmkv as a static variable.

[AtlantisFaded]

2022-12-16 20:18:47.624 1398-1398 MMKV com.atlantis.launcher I <MMKV_IO.cpp:81::loadFromFile> loading [UserConfig] with 0 actual size, file size 4096, InterProcess 1, meta info version:0

The file has been deleted. You should check who and when it's deleted.

收到，但是搜了下，没有地方删除该key，唯一的一处删除是其他的key

我会新起一个demo，再看看，大佬快下班吧哈哈

[lingol]

2022-12-16 20:18:47.624 1398-1398 MMKV com.atlantis.launcher I <MMKV_IO.cpp:81::loadFromFile> loading [UserConfig] with 0 actual size, file size 4096, InterProcess 1, meta info version:0

The file has been deleted. You should check who and when it's deleted.

收到，但是搜了下，没有地方删除该key，唯一的一处删除是其他的key

我会新起一个demo，再看看，大佬快下班吧哈哈

Ignore it. Check my latest reply instead.

[AtlantisFaded]

You should never store mmkv as a static variable.

单独针对隐私弹窗数值读取，改成了每次 MMKV.defaultMMKV()，设置为true后，依然每次启动还是false

[lingol]

That's strange. I guess you have to make a demo to figure it out.

[lingol]

Any updates yet?

[lingol]

Closed due to inactive.