Use Android Studio to debug the application of LiveTV: transplant, compile and debug at one go

Posted by jl on Tue, 01 Feb 2022 00:57:22 +0100

1. Preface

After the detailed explanation of a total of eight articles in "debugging system applications with Android Studio - TvSettings", I believe you have been able to make most of Android MK control system APK source code, transplanted into a project file that can be compiled and debugged with AS.
Taking advantage of the hot iron, we will continue to transplant several APK systems. I believe we will encounter various problems. This paper begins to transplant the system application of LiveTV.

Note: aosp source code is the android system source code. The latest version is android 12.0-beta-1 (S).

2. Basic ideas

Get LiveTV source code
Android. Live TV analysis MK file
Create a new project with the same name using AS
Copy the src and res files into the project
Add dependency
Resolve compilation errors
Installation and commissioning
be accomplished

Students without foundation, please read the first batch of articles in this series first. There are detailed pictures and texts in it. Because the methods are the same, only the necessary description is made downstairs

TvSettings for debugging system applications using Android Studio (I): Migration

Using Android Studio to debug system application TvSettings (2): build gradle

Using Android Studio to debug system application TvSettings (3): first compilation

3. Commissioning platform

Software version: android P(9.0)
Development board: MediaTek 9652(ARM)
Product: android smart TV
Note: you can also use your own mobile phone or android simulator in the same way; At the same time, you need to prepare a package of AOSP source code or the public android source code supporting the development board.

4. Obtain App source code

aosp_tv\packages\apps\TV (AOSP is the original version of Google. Students without development platform can try this version for simulator)
aosp_tv\vendor\mediatek\proprietary_tv\open\packages\apps\LiveTV (MTK original, using the source code of this package)

5. Analysis configuration file

5.1 analysis target document

Path: aosp_tv\vendor\mediatek\proprietary_tv\open\packages\apps\LiveTV

LiveTV\Android.mk
LiveTV\AndroidManifest.xml

5.2 analysis results

LiveTV\AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mediatek.wwtv.tvcenter"   -> Package name
    ......Omit />
    <uses-sdk android:minSdkVersion="28" android:targetSdkVersion="28" />  -> API/SDK LV For 28
     ......Omit

.
LiveTV\Android.mk

ifeq "$(MSTAR_BSP)" "true"
LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional
LOCAL_DEX_PREOPT:=false
LOCAL_STATIC_JAVA_LIBRARIES += com.mediatek.mtkaudiopatchmanager 
                            ->  implementation files('../libs/com.mediatek.mtkaudiopatchmanager.jar')

LOCAL_STATIC_JAVA_LIBRARIES += \      ->  MTK specific,by implementation static link library
    com.mediatek.support.sharecode \  ->  implementation files('../libs/com.mediatek.support.sharecode.jar')
    com.mediatek.support.tv \ ->          implementation files('../libs/com.mediatek.support.tv.jar')
    volley \ ->                           implementation files('../libs/volley.jar')
    com.mediatek.dm \ ->     implementation files('../libs/com.mediatek.dm.jar')
    com.mediatek.tv.ini ->   implementation files('../libs/com.mediatek.tv.ini.jar')

LOCAL_STATIC_ANDROID_LIBRARIES := \    -->android.support Support library, for implementation Static link
    android-support-v7-recyclerview \ ->    implementation 'com.android.support:recyclerview-v7:28.0.0'
    android-support-v7-preference \ ->      implementation 'com.android.support:preference-v7:28.0.0'
    android-support-v7-appcompat \ ->       implementation 'com.android.support:appcompat-v7:28.0.0'
    android-support-v7-palette \ ->         implementation 'com.android.support:palette-v7:28.0.0'
    android-support-v14-preference \ ->     implementation 'com.android.support:preference-v14:28.0.0'
    android-support-v17-preference-leanback \ ->     implementation 'com.android.support:preference-leanback-v17:28.0.0'
    android-support-v17-leanback \ ->                implementation 'com.android.support:leanback-v17:28.0.0'
    android-support-tv-provider \ ->                 implementation 'com.android.support:support-tv-provider:28.0.0'
    com.mediatek.tv.agent \      ->                  implementation files('../libs/com.mediatek.tv.agent.jar')
    android-arch-lifecycle-extensions ->             implementation 'android.arch.lifecycle:extensions:1.1.1'

LOCAL_RESOURCE_DIR := \
    $(LOCAL_PATH)/res

LOCAL_USE_AAPT2 := true

LOCAL_SRC_FILES := \
        $(call all-java-files-under, src)

LOCAL_SRC_FILES += ../../../public_inc/android/common/FileSystemPath.java   ->Of other directories that need to be included java file

LOCAL_PRIVATE_PLATFORM_APIS := true   ->use sdk of hide of api To compile,So we need to compile it ourselves framework.jar

LOCAL_PACKAGE_NAME := LiveTV   -> APK Name, and LiveTV.apk
LOCAL_CERTIFICATE := platform    -> Use system signature
LOCAL_PRIVILEGED_MODULE := true     -> Install to system/priv-app Under the directory

include $(BUILD_PACKAGE)   -> Compile into APK file
endif

6. Build the Android Studio project of LiveTv

Because it is the second article on transplantation, the same steps will not be described in detail. If you have any questions, you can refer to the relevant articles in this column.

6.1 basic steps

Android Studio -> Create New Project->Android Tv->NoActivity
Fill in the project information and create a LiveTV project according to the analysis results of the upstairs configuration
Delete the res and src files in the new LiveTV project
AOSP_ tv\vendor\mediatek\proprietary_ TV \ open \ packages \ apps \ src, res, androidmanifest. In livetv Copy the XML file to the corresponding directory of the new AS project
Git initializes the LiveTV project and submits a modification; In the following steps, submit every time you solve an error
According to upstairs analysis, edit build Gradle and other dependencies and configurations
Compile - > resolve error - > compile passed
Sign - > Run - > resolve run errors
be accomplished!

6.2 created directory structure

Note: org and org represent the original version

szhou@yanfa-zs-502143:/mnt/d/szhou/note/android_02/source_as/LiveTV$ tree -L 5
.
├── app
│   ├── build.gradle
│   ├── libs
│   ├── proguard-rules.pro
│   └── src
│       └── main
│           ├── AndroidManifest.xml ->from aosp_tv\vendor\mediatek\proprietary_tv\open\packages\apps\LiveTV\AndroidManifest.xml copy
│           ├── assets
│           │   ├── licenses.html
│           │   ├── music
│           │   └── rating_sources.html
│           ├── java
│           │   └── com       --> from aosp_tv\vendor\mediatek\proprietary_tv\open\packages\apps\LiveTV\src\com\* copy
│           └── res   -> l from aosp_tv\vendor\mediatek\proprietary_tv\open\packages\apps\LiveTV\res copy
│               ├── anim
│               ├── animator
│               ├── color
│               ├── drawable
│               ├── drawable-hdpi
│               ├── drawable-ldpi
│               ├── drawable-mdpi
│               ├── drawable-xhdpi
│               ├── drawable-xxhdpi
│               ├── font
│               ├── layout
│               ├── raw
│               ├── values
│               ├── values-hdpi
│               ├── values-land
│               ├── values-xhdpi
│               └── xml
├── build.gradle
├── gradle
│   └── wrapper
│       ├── gradle-wrapper.jar
│       └── gradle-wrapper.properties
├── gradle.properties
├── gradlew
├── gradlew.bat
├── local.properties
└── settings.gradle

28 directories, 13 files
szhou@yanfa-zs-502143:/mnt/d/szhou/note/android_02/source_as/LiveTV$

6.3 modify app / build gradle

Edit app / build according to the analysis results in 5.2 above Gradle file, and add some common wrong configuration items of TvSettings transplanted before and the configuration of system signature. The final effect is as follows.

app/build. The full text of gradle is modified as follows

plugins {
    id 'com.android.application'
}

android {
    compileSdkVersion 28
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "com.mediatek.wwtv.tvcenter"
        minSdkVersion 28
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"

    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

    //Solve the jdk compatibility problem. By default, it is version 1.7 and does not support lamda expressions
    compileOptions {
        sourceCompatibility 1.8
        targetCompatibility 1.8
    }

    //System signature file
    signingConfigs {
        release {
            storeFile file("../../keystore/mh/platform.jks")
            storePassword 'android'
            keyAlias 'platform'
            keyPassword 'android'
        }

        debug {
            storeFile file("../../keystore/mh/platform.jks")
            storePassword 'android'
            keyAlias 'platform'
            keyPassword 'android'
        }
    }
}

dependencies {
     
     //Necessary jar package to replace android.com of SDK Jar, because you need to use hide system functions
    compileOnly files('libs/framework.jar')

    //Press Android The analysis results of MK will depend on this
    //1. LOCAL_STATIC_JAVA_LIBRARIES of the Android.mk
    //The following MTK specific dependencies should be copied from the compiled source directory and stored as app/libs
    implementation files('libs/com.mediatek.mtkaudiopatchmanager.jar')  //LOCAL_STATIC_JAVA_LIBRARIES += com.mediatek.mtkaudiopatchmanager
    implementation files('libs/com.mediatek.support.sharecode.jar') // com.mediatek.support.sharecode
   //implementation files('libs/com.mediatek.support.tv.jar') //com. mediatek. support. There are duplicate classes in TV compilation. This item is temporarily removed
    implementation files('libs/volley.jar') //volley
    implementation files('libs/com.mediatek.dm.jar') //com.mediatek.dm
    implementation files('libs/com.mediatek.tv.ini.jar') //com.mediatek.tv.ini

    //2. LOCAL_STATIC_ANDROID_LIBRARIES of the Android.mk
    //The following Android Support items can be queried on Baidu or the official Android website
    implementation 'com.android.support:recyclerview-v7:28.0.0' //android-support-v7-recyclerview
    implementation 'com.android.support:preference-v7:28.0.0' //android-support-v7-preference
    implementation 'com.android.support:appcompat-v7:28.0.0' //android-support-v7-appcompat
    implementation 'com.android.support:palette-v7:28.0.0' //android-support-v7-palette
    implementation 'com.android.support:preference-v14:28.0.0' //android-support-v14-preference
    implementation 'com.android.support:preference-leanback-v17:28.0.0' //android-support-v17-preference-leanback
    implementation 'com.android.support:leanback-v17:28.0.0' //android-support-v17-leanback
    implementation 'com.android.support:support-tv-provider:28.0.0' //android-support-tv-provider
    //implementation files('libs/com.mediatek.tv.agent.jar') //com.mediatek.tv.agent; Duplicate classes appear during compilation. This item is temporarily removed
    implementation 'android.arch.lifecycle:extensions:1.1.1' //android-arch-lifecycle-extensions
}

6.4 modify livetv / build gradle

Add the following statement to add the framework Set the jar priority to the highest and set it to the default SDK Jar was previously referenced. Note the path of jar: APP / LIBS / framework Jar. If there is a write error, the classes cannot be found, and these classes are used by the framework Jar contains.

allprojects {
      //Prompt framework Priority of jar
    gradle.projectsEvaluated {
        tasks.withType(JavaCompile) {
            // If there are multiple jars that need to be upgraded, separate them with semicolons, such as jar / framework jar; jar/core-all. jar;
            options.compilerArgs.add('-Xbootclasspath/p:app/libs/framework.jar;')
        }
    }
}

6.5 JAR package added

The following JAR package, from AOSP_ tv\out\target\common\obj\JAVA_ Available in the libraries \ directory, you can view the previous relevant articles to understand the detailed process.

szhou@yanfa-zs-502143:/mnt/d/szhou/note/android_02/source_as/LiveTV/app$ tree -L 2 libs
libs
├── com.mediatek.dm.jar
├── com.mediatek.mtkaudiopatchmanager.jar
├── com.mediatek.support.sharecode.jar
├── com.mediatek.support.tv.jar
├── com.mediatek.tv.agent.jar
├── com.mediatek.tv.ini.jar
├── framework.jar
└── volley.jar

0 directories, 8 files
szhou@yanfa-zs-502143:/mnt/d/szhou/note/android_02/source_as/LiveTV/app$

6.6 compilation passed

7. Deploy, test and resolve runtime errors

7.1 preparation before deployment

This paper uses the adb debugging of the local network, so first connect the development board to the local LAN
Every time you connect to the development board, you need to start the abdd service of the board and input commands through the serial port
For each deployment, you need to manually delete the files under system / priv app / livetv /
Because LiveTV is android:persistent = "true", it cannot be installed directly during debugging. You can set it to android:persistent = "false" first
After that, you can directly use AS and click run 'app' or debug 'app'

7.2 strange NoSuchMethodError: No virtual method readMultiPsStrValue error

7.2.1 error printing

--------- beginning of crash
06-08 09:55:49.884  5430  5430 E AndroidRuntime: Process: com.mediatek.wwtv.tvcenter, PID: 5430
06-08 09:55:49.884  5430  5430 E AndroidRuntime: java.lang.NoSuchMethodError: No virtual method readMultiPsStrValue(Ljava/lang/String;)Ljava/lang/String; in class Lcom/mediatek/wwtv/tvcenter/util/SaveValue; or its super classes (declaration of 'com.mediatek.wwtv.tvcenter.util.SaveValue' appears in /system/priv-app/LiveTV_ZKJG/LiveTV_ZKJG.apk)
...... Omit

7.2.2 cause analysis

In essence, the JVM cannot find a specific method readMultiPsStrValue of a class, resulting in an error
There may also be an inconsistency due to the version of the class that contains this readMultiPsStrValue method
In the case of this article, this readMultiPsStrValue method is my custom method SaveValue readMultiPsStrValue(), there is no version inconsistency. Through decompiling APK, it is found that SaveValue is prefixed with C0005SaveValue. It is judged that the problem is caused by the unclean environment, because APK does not have this problem if it is integrated into the system image and burned.

7.2.3 analysis process

Decompile the version compiled by Android Studio and find that the custom class SaveValue is renamed C0005 SaveValue
Decompile Android MK integrates the compiled version. It is found that the user-defined class SaveValue has not been renamed

7.2.4 conclusion

The JVM could not find savevalue Readmultipsstrvalue because it has been renamed
Solution: Rename SaveValue to SaveValueT1. The name of this class is too simple. I don't know if this is the reason. Change the name and recompile to solve the problem;
This problem is only caused by repeated installation. During the test, it is suspected that the problem is caused by the unclean LiveTV of the uninstalled system. Follow up research will be carried out

7.2.5 other errors

Others are relatively simple mistakes, which have been encountered in the previous articles. If you have trouble, you can read the previous articles or exchange private letters~

7.2.5 share the picture of victory

8. Series of articles