JailedBird / ArouterGradlePlugin

Arouter auto register plugin for AGP7.4+ & AGP8
Apache License 2.0
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apg8 arouter autoregister transform

ArouterGradlePlugin

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简介

本插件可实现AGP7.4+和AGP8下ARouter框架自动化插桩,使用方法和com.alibaba:arouter-register 完全一致,无缝替换;

更新说明

最新版本1.0.2, 修复和优化

为了不影响篇幅,请到最底部查阅详细内容;

导入方法

插件发布在 ArouterPlugin ,点开即可查阅最全面的插件导入方式;

Koltin

Using the plugins DSL:

plugins {
    id("io.github.JailedBird.ARouterPlugin") version "1.0.2"
}

Using legacy plugin application:

buildscript {
    repositories {
        gradlePluginPortal()
    }
    dependencies {
        classpath("io.github.JailedBird:arouter-gradle-plugin:1.0.2")
    }
}

apply(plugin = "io.github.JailedBird.ARouterPlugin")

Grovvy

Using the plugins DSL:

plugins {
  id "io.github.JailedBird.ARouterPlugin" version "1.0.2"
}

Using legacy plugin application:

buildscript {
  repositories {
    gradlePluginPortal()
  }
  dependencies {
    classpath "io.github.JailedBird:arouter-gradle-plugin:1.0.2"
  }
}

apply plugin: "io.github.JailedBird.ARouterPlugin"

插桩代码

遍历注解处理器生成的路由信息,然后在loadRouterMap函数中插桩

override fun visitInsn(opcode: Int) {
    // generate code before return
    if (opcode in Opcodes.IRETURN..Opcodes.RETURN) {
        targetList?.forEach { scanSetting ->
            scanSetting.classList.forEach { name ->
                val className = name.replace("/", ".")
                mv.visitLdcInsn(className)// 类名

                mv.visitMethodInsn(
                    Opcodes.INVOKESTATIC,
                    ScanSetting.GENERATE_TO_CLASS_NAME,
                    ScanSetting.REGISTER_METHOD_NAME,
                    "(Ljava/lang/String;)V",
                    false
                )
            }
        }
    }
    super.visitInsn(opcode)
}

插桩后字节码如下:

.method public static loadRouterMap()V
    .registers 1

    .line 63
    const/4 v0, 0x0
    sput-boolean v0, Lcom/alibaba/android/arouter/core/LogisticsCenter;->registerByPlugin:Z

    .line 68
    const-string v0, "com.alibaba.android.arouter.routes.ARouter$$Root$$app"
    invoke-static {v0}, Lcom/alibaba/android/arouter/core/LogisticsCenter;->register(Ljava/lang/String;)V

    const-string v0, "com.alibaba.android.arouter.routes.ARouter$$Root$$arouterapi"
    invoke-static {v0}, Lcom/alibaba/android/arouter/core/LogisticsCenter;->register(Ljava/lang/String;)V

    const-string v0, "com.alibaba.android.arouter.routes.ARouter$$Providers$$app"
    invoke-static {v0}, Lcom/alibaba/android/arouter/core/LogisticsCenter;->register(Ljava/lang/String;)V

    const-string v0, "com.alibaba.android.arouter.routes.ARouter$$Providers$$arouterapi"
    invoke-static {v0}, Lcom/alibaba/android/arouter/core/LogisticsCenter;->register(Ljava/lang/String;)V

    return-void
.end method

更新说明

1.0.2 更新内容

1、 解决issue7 debug阶段编译慢的问题;宿主模块启用如下配置,可避免在debug的变体下进行插桩,此时会通过Arouter原生遍历dex寻找路由文件,首次启动慢,之后会保存在SP中,速度应该还可以接受;缺点是路由表表更,需要清除应用数据才能生效;默认关闭,推荐开启(毕竟大项目编译非常慢);

arouter_config {
    disableTransformWhenDebugBuild = true
}

2、 字节码插桩从ASM5升级到ASM7,解决 issue6 其实我暂时没弄懂这个原理,只是改了插桩API的这个ASM版本参数;

3、 重要:demo添加混淆规则! 分支 bugfix/agp8.2.2_runtime_error 实验发现AGP 8.2.2启用混淆minify后,貌似 会把 TypeWrapper的匿名内部类从泛型ParameterizedType混淆为Class,导致类型转换报错;

public class TypeWrapper<T> {
    protected final Type type;

    protected TypeWrapper() {
        Type superClass = getClass().getGenericSuperclass();

        type = ((ParameterizedType) superClass).getActualTypeArguments()[0];
    }

    public Type getType() {
        return type;
    }
}

导致对象注入时候,类型解析抛出异常;

    if(serializationService != null) {
      val res = substitute.intent?.extras?.getString("list")
      if(!res.isNullOrEmpty()) {
        val typeWrapper = object : TypeWrapper<MutableList<String>>(){}
        serializationService?.parseObject<MutableList<String>>(res, typeWrapper.type)?.let{
                substitute.list = it
            }
      }
    }

添加如下混淆即可:【没出现问题,不加也行】

# 避免继承自TypeWrapper的匿名内部类(获取泛型T对应的Type)被混淆 导致Type获取失败
# Caused by: java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType
# at com.alibaba.android.arouter.facade.model.TypeWrapper.<init>(TypeWrapper.java:19)
# 这种情况下 就是匿名内部类被混淆导致 getClass().getGenericSuperclass() 从ParameterizedType变为Class从而导致Type类型转换异常
-keep class ** extends com.alibaba.android.arouter.facade.model.TypeWrapper { *; }

参考文献

最后

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