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需求

近期，客户需要预装一个apk，同时该apk要可卸载。

解决方法

1、device/mediatek/mt6761/device.mk

需要在该文件中添加：

+PRODUCT_PROPERTY_OVERRIDES += persist.sys.pms_sys_removable=1
+
+ifneq ($(strip $(MTK_BASIC_PACKAGE)), yes)
+  PRODUCT_COPY_FILES += $(call add-to-product-copy-files-if-exists,vendor/mediatek/proprietary/frameworks/base/data/etc/pms_sysapp_removable_vendor_list.txt:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/pms_sysapp_removable_vendor_list.txt)
+endif

2、/vendor/mediatek/proprietary/frameworks/base/data/etc/pms_sysapp_removable_vendor_list.txt

在该文档中将apk的包名添加上

3、路径：

/vendor/mediatek/proprietary/frameworks/base/services/core/java/com/mediatek/server/pm/PmsExtImpl.java
修改如下：

private static final File REMOVABLE_SYS_APP_LIST_VENDOR = Environment
-            .buildPath(Environment.getRootDirectory(), "etc", "permissions",
+            .buildPath(Environment.getVendorDirectory(), "etc", "permissions","pms_sysapp_removable_vendor_list.txt");

4、Android.mk

LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)LOCAL_MODULE := LeChang
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_CLASS := APPS
LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)
LOCAL_CERTIFICATE := platform
LOCAL_SRC_FILES := $(LOCAL_MODULE).apk

此外，在该文件中可添加：LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR)/app， 也可以将LOCAL_CERTIFICATE := platform中的platform 换为PRESIGNED