Android 热修复框架 Tinker ( 一 )

1.什么是Tinker?

Tinker是微信官方的Android热补丁解决方案，它支持动态下发代码、So库以及资源，让应用能够在不需要重新安装的情况下实现更新。当然，你也可以使用Tinker来更新你的插件。

2.快速集成Tinker

1.添加Gradle依赖

1.在项目的build.gradle中，添加tinker-patch-gradle-plugin的依赖

buildscript {
    dependencies {
        classpath ('com.tencent.tinker:tinker-patch-gradle-plugin:1.7.5')
    }
}

2.然后在app的gradle文件app/build.gradle，我们需要添加tinker的库依赖以及apply tinker的gradle插件.

dependencies {
    //可选，用于生成application类 
    provided('com.tencent.tinker:tinker-android-anno:1.7.5')
    //tinker的核心库
    compile('com.tencent.tinker:tinker-android-lib:1.7.5') 
}

2.配置Gradle签名打包

1.签名文件的生成

点击Android studio中的: Buider->Generate Signed APk..–>Create New

填完信息后最终生成：tinker.jks签名文件

2.配置Gridle

   signingConfigs {
        release {
            try {
                storeFile file("./keystore/tinker.jks")
                storePassword "tinker"
                keyAlias "tinker"
                keyPassword "tinker"
            } catch (ex) {
                throw new InvalidUserDataException(ex.toString())
            }
        }

        debug {
            storeFile file("./keystore/debug.keystore")
        }
    }

    buildTypes {
        release {
            minifyEnabled true
            signingConfig signingConfigs.release
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
        debug {
            debuggable true
            minifyEnabled false
            signingConfig signingConfigs.debug
        }
    }



    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }

3.添加混淆

//在proguard-rules.pro文件中添加混淆
-keepattributes SourceFile,LineNumberTable

4.启动分包功能和给BuildConfig.java添加字段（调试时可能会用上）

    /**
     * 这里配置的数据将会赋值给BuidConfig.java类中
     */
    defaultConfig {
        applicationId "xmg.com.androidtinker"
        minSdkVersion 15
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

        /**
         * you can use multiDex and install it in your ApplicationLifeCycle implement
         */
        multiDexEnabled true
        /**
         * not like proguard, multiDexKeepProguard is not a list, so we can't just
         * add for you in our task. you can copy tinker keep rules at
         * build/intermediates/tinker_intermediates/tinker_multidexkeep.pro
         */
        multiDexKeepProguard file("keep_in_main_dex.txt")
        /**
         * buildConfig can change during patch!
         * we can use the newly value when patch
         */
        buildConfigField "String", "MESSAGE", "\"I am the base apk\""
//        buildConfigField "String", "MESSAGE", "\"I am the patch apk\""
        /**
         * client version would update with patch
         * so we can get the newly git version easily!
         * 这里是给BuildConfig.java 添加字段TINKER_ID与PLATFORM，字段的类型都是String，并给字段赋值："${}"   " "
         */
        buildConfigField "String", "TINKER_ID", "\"${getTinkerIdValue()}\""
        buildConfigField "String", "PLATFORM",  "\"all\""

    }

5.添加：keep_in_main_dex.txt 文件到app的根目录下

# you can copy the tinker keep rule at
# build/intermediates/tinker_intermediates/tinker_multidexkeep.pro

-keep class com.tencent.tinker.loader.** {
   
   
    *;
}

-keep class tinker.sample.android.app.SampleApplication {
   
   
    *;
}

-keep public class * implements com.tencent.tinker.loader.app.ApplicationLifeCycle {
   
   
    *;
}

-keep public class * extends com.tencent.tinker.loader.TinkerLoader {
   
   
    *;
}

-keep public class * extends com.tencent.tinker.loader.app.TinkerApplication {
   
   
    *;
}

# here, it is your own keep rules.
# you must be careful that the class name you write won't be proguard
# but the tinker class above is OK, we have already keep for you!

3.添加集成Tinker的代码

1.添加SampleApplicationLike和Application

推荐使用tinker-android-anno 来自动生成 Application ，然而你仅仅需要给你的SampleApplicationLike 添加注解 。

@DefaultLifeCycle(
application = "xmg.com.androidtinker.SampleApplication", //自动生成Application的全路径      
flags = S