[移动开发]【AndroidArouterKotlin】一个小例子教你使用阿里路由框架Arouter

效果

配置

project gradle

buildscript {
	...
    dependencies {
        ...
        //配置初始化预编译插件-->
        classpath 'com.alibaba:arouter-register:1.0.2'
    }
}

module gradle

plugins {
    ...
    //配置插件-->
    id 'kotlin-kapt'
    id 'com.alibaba.arouter'
}

android {
    ...

    defaultConfig {
        ...
        //配置选项-->
        javaCompileOptions {
            annotationProcessorOptions {
                arguments = [AROUTER_MODULE_NAME: project.getName()]
            }
        }
    }
    ...
}

dependencies {
	...
	//配置依赖-->
    implementation 'com.alibaba:arouter-api:1.5.0'
    kapt 'com.alibaba:arouter-compiler:1.2.2'
}

Crazy Codeing

Routes

object Routes {
    const val PATH_MAIN = "/main/main"
    const val PATH_LOGIN = "/main/login"
    const val PATH_AUTHENTICATION = "/main/authentication"
    const val PATH_VIP = "/main/vip"
    const val PATH_DEGRADE = "/main/degra"

    const val DEGRADE_SERVICE = "/degrade/service"
    const val INTERCEPTOR = "interceptor"

    const val EXTRA_LOGIN = 0x01
    const val EXTRA_AUTHENTICATION = EXTRA_LOGIN shl 1
    const val EXTRA_VIP = EXTRA_AUTHENTICATION shl 1
}

RouteHelper

fun String.navigate() {
    ARouter.getInstance().build(this).navigation()
}

MainApplication

class MainApplication : Application() {
    override fun onCreate() {
        super.onCreate()

        if (BuildConfig.DEBUG) {
            ARouter.openLog()
            ARouter.openDebug()
        }

        ARouter.init(this)
    }
}

MainActivity

@Route(path = Routes.PATH_MAIN)
class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        findViewById<Button>(R.id.main_center).setOnClickListener {
            Routes.PATH_LOGIN.navigate()
        }

        findViewById<Button>(R.id.main_vip).setOnClickListener {
            Routes.PATH_VIP.navigate()
        }

        findViewById<Button>(R.id.main_account).setOnClickListener {
            Routes.PATH_AUTHENTICATION.navigate()
        }

        findViewById<Button>(R.id.main_degrade).setOnClickListener {
            "/main/unknow".navigate()
        }
    }
}

自定义降级策略
CustomDegradeService

@Route(path = Routes.DEGRADE_SERVICE)
class CustomDegradeService : DegradeService {
    override fun init(context: Context?) {
        ARouter.getInstance().build(Routes.PATH_DEGRADE).greenChannel().navigation()
    }

    override fun onLost(context: Context?, postcard: Postcard?) {
    }
}

自定义拦截器
CustomInterceptor

@Interceptor(priority = 9, name = Routes.INTERCEPTOR)
class CustomInterceptor : IInterceptor {
    private var mContext: Context? = null

    override fun init(context: Context?) {
        this.mContext = context
    }

    override fun process(postcard: Postcard?, callback: InterceptorCallback?) {
        val flag = postcard!!.extra

        when {
            (flag and Routes.EXTRA_LOGIN) != 0 -> {
                //login
                callback!!.onInterrupt(RuntimeException("need login"))
                showToast("请先登录")
            }
            (flag and Routes.EXTRA_AUTHENTICATION) != 0 -> {
                //authentication
                callback!!.onInterrupt(RuntimeException("need authentication"))
                showToast("请先实名认证")
            }
            (flag and Routes.EXTRA_VIP) != 0 -> {
                //vip
                callback!!.onInterrupt(RuntimeException("need become vip"))
                showToast("请先加入会员")
            }
            else -> {
                callback!!.onContinue(postcard)
            }
        }
    }

    private fun showToast(content: String) {
        Handler(Looper.getMainLooper()).post {
            Toast.makeText(mContext!!, content, Toast.LENGTH_SHORT).show()
        }
    }
}

AuthenticationActivity

@Route(path = Routes.PATH_AUTHENTICATION, extras = Routes.EXTRA_AUTHENTICATION)
class AuthenticationActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_authentication)

        findViewById<Button>(R.id.authentication_return).setOnClickListener {
            Routes.PATH_MAIN.navigate()
            finish()
        }
    }
}

DegradeActivity

@Route(path = Routes.PATH_DEGRADE)
class DegradeActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_degrade)

        findViewById<ImageView>(R.id.degrade_return).setOnClickListener {
            Routes.PATH_MAIN.navigate()
            finish()
        }
    }
}

LoginActivity

@Route(path = Routes.PATH_LOGIN,extras = Routes.EXTRA_LOGIN)
class LoginActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_login)

        findViewById<Button>(R.id.login_return).setOnClickListener {
            Routes.PATH_MAIN.navigate()
            finish()
        }
    }
}

VipActivity

@Route(path = Routes.PATH_VIP,extras = Routes.EXTRA_VIP)
class VipActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_vip)

        findViewById<Button>(R.id.vip_return).setOnClickListener {
            Routes.PATH_MAIN.navigate()
            finish()
        }
    }
}

还有一些布局文件及简单的按钮控件

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