Android 13 DreamCamera2在Android studio中运行

1.将服务器中DreamCamera2代码复制到本地电脑
s_unisoc_22a\vendor\sprd\platform\packages\apps\DreamCamera2

2.下载build.gradle对应版本Android Studio 4.1.1
下载地址：https://developer.android.google.cn/studio/archive

3.用Android Studio 4.1.1打开DreamCamera2项目，如出现gradle无法下载的情况，请自备梯子
File > Open… > DreamCamera2 > New Window > OK > New Window

4.连接平板电脑，点击Run “DreamCamera2”

5.出现Duplicate resources报错，报错文件为资源key同名冲突，注释一个即可
资源文件一：res\values\dream_camera_arrays_photo_part.xml
资源文件二：res\values\dream_camera_arrays_video_part.xml
同名key为：pref_camera_filter_display_key_array
对比发现同名key对应内容也一致，因些注释上述两个资源文件中的一个pref_camera_filter_display_key_array即可
这里我们注释dream_camera_arrays_video_part.xml中的pref_camera_filter_display_key_array

6.再次点击Run “DreamCamera2”

7.出现依赖缺失报错如下：
Transform’s input file does not exist: …\DreamCamera2\studio_libs\android-ex-camera2-utils.jar

8.去android12源码out目录使用find out -name "android-ex-camera2-utils.jar"可快速查找到该文件所在位置
out/soong/.intermediates/frameworks/ex/camera2/utils/android-ex-camera2-utils/android_common/javac/android-ex-camera2-utils.jar
out/soong/.intermediates/frameworks/ex/camera2/utils/android-ex-camera2-utils/android_common/javac/android-ex-camera2-utils.jar.rsp
out/soong/.intermediates/frameworks/ex/camera2/utils/android-ex-camera2-utils/android_common/turbine/android-ex-camera2-utils.jar
out/soong/.intermediates/frameworks/ex/camera2/utils/android-ex-camera2-utils/android_common/turbine/android-ex-camera2-utils.jar.rsp
out/soong/.intermediates/frameworks/ex/camera2/utils/android-ex-camera2-utils/android_common/turbine-combined/android-ex-camera2-utils.jar
这里我们使用javac/android-ex-camera2-utils.jar文件，并将其放入编译报错所在路径studio_libs中

9.再次点击Run “DreamCamera2”

10.出现类缺失报错如下：
错误: 找不到符号
符号: 类 SystemProperties；
位置: 程序包 android.os
此类为framework.jar中的类，这里我们他用find out -name “framework-minus-apex.jar”
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/aligned/framework-minus-apex.jar
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/combined/framework-minus-apex.jar
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/dex/framework-minus-apex.jar
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/hiddenapi/framework-minus-apex.jar
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/hiddenapi/unaligned/framework-minus-apex.jar
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/jarjar/framework-minus-apex.jar
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/turbine/framework-minus-apex.jar
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/turbine/framework-minus-apex.jar.rsp
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/turbine-combined/framework-minus-apex.jar
out/soong/.intermediates/frameworks/base/framework-minus-apex/android_common/turbine-jarjar/framework-minus-apex.jar
这里的们选一个文件最大的combined/framework-minus-apex.jar，并将其放入build.gradle文件中描述的目录，并重命名为framework.jar
options.compilerArgs.add(“-Xbootclasspath/p:${ANDROID_TOP}/unisoc_framework/framework.jar”)

11.再次点击Run “DreamCamera2”

12.出现已有软件版本号更新报错：The device already has a newer version of this application.
通过下面命令可以监控打开app的包名
C:\Users\WJS>adb shell am monitor
Monitoring activity manager… available commands:
(q)uit: finish monitoring
** Activity starting: com.android.camera2

通过包名获取apk安装位置
C:\Users\WJS>adb shell pm path com.android.camera2
package:/system_ext/app/DreamCamera2/DreamCamera2.apk

将apk下载到电脑上
C:\Users\WJS>adb pull /system_ext/app/DreamCamera2/DreamCamera2.apk .
/system_ext/app/DreamCamera2/DreamCamera2.apk: 1 file pulled, 0 skipped. 32.6 MB/s (7698606 bytes in 0.225s)

将apk拖入Android Studio中进行反编译可获取到其：
android:versionCode=“20002000”
android:versionName=“2.0.002”
将上述参数写入build.gradle中，同时点击Sync Now

11.再次点击Run “DreamCamera2”

12.签名不一致报错：The device already has an application with the same package but a different signature.
jks签名文件生成方法：
openssl pkcs8 -inform DER -nocrypt -in “platform.pk8” -out “key”
openssl pkcs12 -export -in “platform.x509.pem” -inkey “key” -out “p12” -password pass:123456 -name platform
openssl x509 -noout -fingerprint -in “platform.x509.pem”
keytool -importkeystore -deststorepass 123456 -destkeystore “platform.jks” -srckeystore “p12” -srcstoretype PKCS12 -srcstorepass 123456

platform.pk8和platform.x509.pem可以在build\target\product\security（debug签名）或者vendor\sprd\release\apk_key（release签名）找到
将生成的jks签名文件放入DreamCamera2/key目录中

在build.gradle中android节点下添加如下内容：
android {
signingConfigs {
bnd {
storeFile file(‘key/bnd/platform.jks’)
storePassword ‘123456’
keyPassword ‘123456’
keyAlias ‘platform’
}
}
…
buildTypes {
…
debug {
…
signingConfig signingConfigs.bnd
}
}
}