利用源生Launcher开发定制Home

本文主要是介绍利用源生Launcher开发定制Home，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

1.将所有的com.android.launcher3修改为com.demo.launcher

linux环境下可以批量修改，命令如下：
sed -i “s/com.android.launcher3/com.demo.launcher/g” grep com.android.launcher3 -rl Launcher3

2.新建Android Studio工程，新建library，将Launcher3的源码拷贝到library中。具体拷贝目录到：library\src\main目录下。

3.需要配置library的build.gradle

apply plugin: 'com.android.library'
apply plugin: 'com.google.protobuf'android {compileSdkVersion 28buildToolsVersion "29.0.2"defaultConfig {minSdkVersion 28targetSdkVersion 28versionCode 1versionName "1.0"testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"}buildTypes {release {minifyEnabled falseproguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'}}sourceSets {main.java.srcDirs += 'src/main/src'main.java.srcDirs += 'src/main/src_flags'main.java.srcDirs += 'src/main/protos'main.java.srcDirs += 'src/main/src_ui_overrides'main.proto.srcDirs += 'src/main/proto_overrides'main.proto.srcDirs += 'src/main/protos'main.res.srcDirs += 'src/main/res'}compileOptions {sourceCompatibility = '1.8'targetCompatibility = '1.8'}
}dependencies {implementation fileTree(dir: 'libs', include: ['*.jar'])implementation 'com.android.support:appcompat-v7:28.0.0'testImplementation 'junit:junit:4.13'androidTestImplementation 'com.android.support.test:runner:1.0.2'androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'implementation 'com.android.support:support-v4:28.0.0'implementation 'com.google.protobuf:protobuf-java:3.11.4'implementation 'com.google.protobuf.nano:protobuf-javanano:3.2.0rc2'implementation 'com.android.support:support-dynamic-animation:28.0.0'implementation 'com.android.support:recyclerview-v7:28.0.0'
}protobuf {protoc {artifact = 'com.google.protobuf:protoc:3.1.0'}generateProtoTasks {all().each { task ->task.builtins {remove java}task.builtins {java {}// Add cpp output without any option.// DO NOT omit the braces if you want this builtin to be added.cpp {}}}}generatedFilesBaseDir = "$projectDir/src/generated"
}

这里面需要注意的俩个地方：
1.使用sourceSets添加src目录和res目录。这样编译才能链接进去。
2.使用protobuf插件和简本，编译protobuf相关源码。

4.工程目录的build.gradle，也需要增加protobuf的classpath，如下：

// Top-level build file where you can add configuration options common to all sub-projects/modules.buildscript {repositories {google()maven { url 'https://maven.google.com' }jcenter()}dependencies {classpath 'com.android.tools.build:gradle:3.6.2'classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.12'// NOTE: Do not place your application dependencies here; they belong// in the individual module build.gradle files}
}allprojects {repositories {google()jcenter()}
}task clean(type: Delete) {delete rootProject.buildDir
}

5.需要在android系统源码中拷贝nano相关的源码

编译报错找不到：import com.demo.launcher.userevent.nano.LauncherLogProto.ControlType;

在系统源码中搜索：

find / -name "LauncherLogProto.java"

搜索结果:

/home/CD/sunxiaolin/work/ac_cgn_ga2/out/target/common/obj/JAVA_LIBRARIES/LauncherCommonDepsLib2_intermediates/proto/src/com/demo/launcher/userevent/nano/LauncherLogProto.java