android sd卡权限

概述把androidP上被谷歌架空的mediawrite权限补回来，解决外置存储卡复制、移动等 *** 作，提示需要root权限的问题。frameworks/base/data/etc/platform.xml<permissionname="android.permission.WRITE_MEDIA_STORAGE"><groupgid="sdcard_r"/><groupgid

把androID P上被谷歌架空的media write权限补回来，解决外置存储卡复制、移动等 *** 作，提示需要root权限的问题。

frameworks/base/data/etc/platform.xml    <permission name="androID.permission.WRITE_MEDIA_STORAGE" >        <group gID="sdcard_r" />        <group gID="sdcard_rw" />        <group gID="sdcard_all" />        <group gID="media_rw" />    </permission>frameworks/base/services/core/java/com/androID/server/pm/PackageManagerService.java@OverrIDepublic voID systemReady() {...    StorageManagerInternal.addExternalStoragePolicy(                new StorageManagerInternal.ExternalStorageMountPolicy() {        @OverrIDe        public int getMountMode(int uID, String packagename) {                if (Process.isIsolated(uID)) {                    return Zygote.MOUNT_EXTERNAL_NONE;                }                //  +{ for BUG                if (checkUIDPermission(WRITE_MEDIA_STORAGE, uID) == PERMISSION_GRANTED) {                    return Zygote.MOUNT_EXTERNAL_DEFAulT;                }                //  + } for BUG                if (checkUIDPermission(READ_EXTERNAL_STORAGE, uID) == PERMISSION_DENIED) {                    return Zygote.MOUNT_EXTERNAL_DEFAulT;                }                if (checkUIDPermission(WRITE_EXTERNAL_STORAGE, uID) == PERMISSION_DENIED) {                    return Zygote.MOUNT_EXTERNAL_READ;                }                return Zygote.MOUNT_EXTERNAL_WRITE;            }    }...}

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