add files

.gitignore

@@ -0,0 +1,10 @@
+*.iml
+.gradle
+/local.properties
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,33 @@
+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 27
+    defaultConfig {
+        applicationId "com.itscoder.allenwu.eventbuskt"
+        minSdkVersion 15
+        targetSdkVersion 27
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/itscoder/allenwu/eventbuskt/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package com.itscoder.allenwu.eventbuskt
+
+import android.support.test.InstrumentationRegistry
+import android.support.test.runner.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getTargetContext()
+        assertEquals("com.itscoder.allenwu.eventbuskt", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.itscoder.allenwu.eventbuskt">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/itscoder/allenwu/eventbuskt/EventBus.kt

@@ -0,0 +1,43 @@
+package com.itscoder.allenwu.eventbuskt
+
+import java.util.concurrent.CopyOnWriteArrayList
+import java.util.concurrent.ExecutorService
+import java.util.concurrent.Executors
+
+object EventBus {
+    private val executorService: ExecutorService = Executors.newCachedThreadPool()
+    private const val DEFAULT_TAG = ""
+    // 根据事件类型，找到所有对应的注解方法
+    private val subscriberMap = mutableMapOf<EventType,CopyOnWriteArrayList<Subscription>>()
+    private val methodFinder = SubscriberMethodFinder(subscriberMap)
+
+    /**
+     * 注册观察者，类似查找出当前 Activity 中被@Subscriber关键字来标记方法
+     */
+    fun register(obj: Any) = executorService.execute(){
+        methodFinder.findSubscribeMethods(obj)
+    }
+
+    /**
+     * 分发事件
+     */
+    @JvmOverloads
+    fun post(event: IEvent,tag: String = DEFAULT_TAG){
+        val eventType = EventType(event.javaClass,tag)
+        // 找出所有该事件的订阅者
+        val list = methodFinder.getMatchEventType(eventType)
+        // 分发
+        list?.let{
+            EventDispatcher.dispatchEvent(event, it)
+        }
+    }
+
+    /**
+     * 注销观察者
+     */
+    fun unregister(obj: Any) = executorService.execute {
+        methodFinder.removeSubscriberMethod(obj)
+    }
+
+    fun getExecutorService() = executorService
+}

app/src/main/java/com/itscoder/allenwu/eventbuskt/EventDispatcher.kt

@@ -0,0 +1,32 @@
+package com.itscoder.allenwu.eventbuskt
+
+import android.os.Looper
+import com.itscoder.allenwu.eventbuskt.handler.*
+import java.util.concurrent.CopyOnWriteArrayList
+
+object EventDispatcher {
+
+    private val postHandler = PostEventHandler()
+    private val mainHandler = MainEventHandler(Looper.getMainLooper())
+    private val asyncHandler = AsyncEventHandler()
+    private val bgHandler = BackgroundHandler()
+
+    fun dispatchEvent(event: IEvent, list: CopyOnWriteArrayList<Subscription>) =
+            list.forEach { it: Subscription ->
+                it.let {
+                    val subscriber = it.subscriber.get()
+                    subscriber?.let { subscriber: Any ->
+                        val eventHandler = getEventHandler(it.threadMode)
+                        eventHandler.handleEvent(it, event)
+                    }
+                }
+            }
+
+    // 很据ThreadMode获取对应的事件处理器
+    private fun getEventHandler(mode: ThreadMode): EventHandler = when (mode) {
+        ThreadMode.POSTING -> postHandler
+        ThreadMode.ASYNC -> asyncHandler
+        ThreadMode.MAIN -> mainHandler
+        ThreadMode.BACKGROUND -> bgHandler
+    }
+}

app/src/main/java/com/itscoder/allenwu/eventbuskt/EventType.kt

@@ -0,0 +1,31 @@
+package com.itscoder.allenwu.eventbuskt
+
+/**
+ * 确定唯一Key，记录对应的事件执行方法
+ */
+internal class EventType(private val eventClass: Class<*>, private val tag: String){
+    override fun equals(other: Any?): Boolean {
+
+        if (this === other){
+            return true
+        }
+        // 判断是否为空，是否属于同一种类型
+        if (other == null || (other.javaClass.name !== this.javaClass.name)) {
+            return false
+        }
+
+        // 能执行到这里，说明 obj 和 this 同类且非 null
+        val eventType = other as EventType
+        val tagJudge = tag == eventType.tag
+        val eventJudge = eventClass.name == eventType.eventClass.name
+        // EventType是同一个类型
+        return tagJudge && eventJudge
+    }
+
+    override fun hashCode(): Int {
+        var hash = 7
+        hash = hash * 31 + eventClass.hashCode()
+        hash = hash * 31 + tag.hashCode()
+        return hash
+    }
+}

app/src/main/java/com/itscoder/allenwu/eventbuskt/IEvent.kt

@@ -0,0 +1,6 @@
+package com.itscoder.allenwu.eventbuskt
+
+/**
+ * 事件实现接口
+ */
+abstract class IEvent

app/src/main/java/com/itscoder/allenwu/eventbuskt/MainActivity.kt

@@ -0,0 +1,31 @@
+package com.itscoder.allenwu.eventbuskt
+
+import android.support.v7.app.AppCompatActivity
+import android.os.Bundle
+import android.util.Log
+import android.view.View
+import android.widget.Button
+import android.widget.Toast
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        EventBus.register(this)
+
+        findViewById<Button>(R.id.btn).setOnClickListener(View.OnClickListener {
+            EventBus.post(TestEvent("Hello,EventBus"))
+        })
+    }
+
+    @Subscriber("")
+    fun test(event: TestEvent){
+        Log.i("MainActivity",event.toString())
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        EventBus.unregister(this)
+    }
+}