3568Android11第三方app操作U盘

2024-2-29 11:26| 发布者: forqs| 查看: 145| 评论: 0

类目： RK3568系列产品 > Android 文档编号: 1321

一、首先需要app的AndroidManifest.xml中添加如下请求读取和写入外部存储的权限：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

二、修改源码使WRITE_EXTERNAL_STORAGE和READ_EXTERNAL_STORAGE映射到 media_rw 用户组：

diff --git a/frameworks/base/data/etc/platform.xml b/frameworks/base/data/etc/platform.xml

index 76247c2d7a..2246d70a13 100644

--- a/frameworks/base/data/etc/platform.xml

+++ b/frameworks/base/data/etc/platform.xml

@@ -131,8 +131,12 @@

is negligible (one tag with the permission) compared to

the fragility as one can remove a built-in permission which

no longer needs to be mapped to gids and break grant propagation. -->

- <permission name="android.permission.READ_EXTERNAL_STORAGE" />

- <permission name="android.permission.WRITE_EXTERNAL_STORAGE" />

+ <permission name="android.permission.READ_EXTERNAL_STORAGE" >

+ <group gid="media_rw" />

+ </permission>

+ <permission name="android.permission.WRITE_EXTERNAL_STORAGE" >

+ <group gid="media_rw" />

+ </permission>

三、全编译烧写测试验证即可。

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