添加 Activity/Application 生命周期管理

* 关闭所有 Activity
* 应用前后台监听

app/src/main/java/luyao/util/ktx/ui/LifeCycleActivity.kt

@@ -1,10 +1,14 @@
 package luyao.util.ktx.ui
 
 import android.os.Handler
+import kotlinx.android.synthetic.main.activity_lifecycle.*
 import luyao.ktx.R
+import luyao.util.ktx.MainActivity
 import luyao.util.ktx.base.BaseActivity
 import luyao.util.ktx.ext.loge
+import luyao.util.ktx.ext.toast
 import luyao.util.ktx.lifecycle.KtxHandler
+import luyao.util.ktx.lifecycle.KtxManager
 
 /**
  * Created by luyao
@@ -19,6 +23,9 @@ class LifeCycleActivity : BaseActivity() {
     }
 
     override fun initData() {
+        currentActivityBt.setOnClickListener { KtxManager.currentActivity?.let { toast(it.localClassName) } }
+        finishMainBt.setOnClickListener { KtxManager.finishActivity(MainActivity::class.java) }
+        finishAllBt.setOnClickListener { KtxManager.finishAllActivity() }
     }
 
     private val myHandler = KtxHandler(this, Handler.Callback {

app/src/main/res/layout/activity_lifecycle.xml

@@ -4,4 +4,19 @@
               android:layout_width="match_parent"
               android:layout_height="match_parent">
 
+    <androidx.appcompat.widget.AppCompatButton
+            android:id="@+id/currentActivityBt"
+            android:text="currentActivity"
+            style="@style/NormalButton"/>
+
+    <androidx.appcompat.widget.AppCompatButton
+            android:id="@+id/finishMainBt"
+            android:text="finishMainActivity"
+            style="@style/NormalButton"/>
+
+    <androidx.appcompat.widget.AppCompatButton
+            android:id="@+id/finishAllBt"
+            android:text="finishAllActivity"
+            style="@style/NormalButton"/>
+
 </LinearLayout>

ktx/src/main/AndroidManifest.xml

@@ -2,9 +2,8 @@
           package="luyao.util.ktx">
 
 
-    
-    <application >
-        
+    <application>
+
         <provider
                 android:authorities="${applicationId}.fileprovider"
                 android:name="androidx.core.content.FileProvider"
@@ -14,6 +13,11 @@
                     android:name="android.support.FILE_PROVIDER_PATHS"
                     android:resource="@xml/filepaths"/>
         </provider>
-        
+
+        <provider
+                android:authorities="${applicationId}.KtxInstaller"
+                android:name=".Ktx"
+                android:exported="false"/>
+
     </application>
 </manifest>

ktx/src/main/java/luyao/util/ktx/Ktx.kt

@@ -0,0 +1,53 @@
+package luyao.util.ktx
+
+import android.app.Application
+import android.content.ContentProvider
+import android.content.ContentValues
+import android.database.Cursor
+import android.net.Uri
+import androidx.lifecycle.ProcessLifecycleOwner
+import luyao.util.ktx.lifecycle.KtxLifeCycleCallBack
+import luyao.util.ktx.lifecycle.KtxLifeObserver
+
+/**
+ * Created by luyao
+ * on 2019/8/6 14:22
+ */
+class Ktx : ContentProvider() {
+
+    companion object {
+        lateinit var app: Application
+        var watchActivityLife = true
+        var watchAppLife = true
+    }
+
+
+    override fun onCreate(): Boolean {
+        val application = context!!.applicationContext as Application
+        install(application)
+        return true
+    }
+
+    private fun install(application: Application) {
+        app = application
+        if (watchActivityLife) application.registerActivityLifecycleCallbacks(KtxLifeCycleCallBack())
+        if (watchAppLife) ProcessLifecycleOwner.get().lifecycle.addObserver(KtxLifeObserver())
+    }
+
+    override fun insert(uri: Uri, values: ContentValues?): Uri? = null
+
+    override fun query(
+        uri: Uri,
+        projection: Array<String>?,
+        selection: String?,
+        selectionArgs: Array<String>?,
+        sortOrder: String?
+    ): Cursor? = null
+
+
+    override fun update(uri: Uri, values: ContentValues?, selection: String?, selectionArgs: Array<String>?): Int = 0
+
+    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<String>?): Int = 0
+
+    override fun getType(uri: Uri): String? = null
+}

ktx/src/main/java/luyao/util/ktx/lifecycle/KtxHandler.kt

@@ -1,7 +1,6 @@
 package luyao.util.ktx.lifecycle
 
 import android.os.Handler
-import android.os.Message
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.LifecycleObserver
 import androidx.lifecycle.LifecycleOwner
@@ -11,7 +10,7 @@ import androidx.lifecycle.OnLifecycleEvent
  * Created by luyao
  * on 2019/8/6 9:34
  */
-class KtxHandler(lifecycleOwner: LifecycleOwner,callback: Callback) : Handler(callback), LifecycleObserver {
+class KtxHandler(lifecycleOwner: LifecycleOwner, callback: Callback) : Handler(callback), LifecycleObserver {
 
     private val mLifecycleOwner: LifecycleOwner = lifecycleOwner
 

ktx/src/main/java/luyao/util/ktx/lifecycle/KtxLifeCycleCallBack.kt

@@ -0,0 +1,46 @@
+package luyao.util.ktx.lifecycle
+
+import android.app.Activity
+import android.app.Application
+import android.os.Bundle
+import luyao.util.ktx.ext.loge
+
+/**
+ * Created by luyao
+ * on 2019/8/6 10:45
+ */
+class KtxLifeCycleCallBack : Application.ActivityLifecycleCallbacks {
+
+
+    override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
+        KtxManager.pushActivity(activity)
+        "onActivityCreated : ${activity.localClassName}".loge()
+    }
+
+    override fun onActivityStarted(activity: Activity) {
+        "onActivityStarted : ${activity.localClassName}".loge()
+    }
+
+    override fun onActivityResumed(activity: Activity) {
+        "onActivityResumed : ${activity.localClassName}".loge()
+    }
+
+    override fun onActivityPaused(activity: Activity) {
+        "onActivityPaused : ${activity.localClassName}".loge()
+    }
+
+
+    override fun onActivityDestroyed(activity: Activity) {
+        "onActivityDestroyed : ${activity.localClassName}".loge()
+        KtxManager.popActivity(activity)
+    }
+
+    override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle?) {
+    }
+
+    override fun onActivityStopped(activity: Activity) {
+        "onActivityStopped : ${activity.localClassName}".loge()
+    }
+
+
+}

ktx/src/main/java/luyao/util/ktx/lifecycle/KtxLifeObserver.kt

@@ -0,0 +1,24 @@
+package luyao.util.ktx.lifecycle
+
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleObserver
+import androidx.lifecycle.OnLifecycleEvent
+import luyao.util.ktx.Ktx
+import luyao.util.ktx.ext.toast
+
+/**
+ * Created by luyao
+ * on 2019/8/6 15:10
+ */
+class KtxLifeObserver : LifecycleObserver {
+
+    @OnLifecycleEvent(Lifecycle.Event.ON_START)
+    fun onForeground() {
+        Ktx.app.toast("应用进入前台")
+    }
+
+    @OnLifecycleEvent(Lifecycle.Event.ON_STOP)
+    fun onBackground() {
+        Ktx.app.toast("应用进入后台")
+    }
+}

ktx/src/main/java/luyao/util/ktx/lifecycle/KtxManager.kt

@@ -0,0 +1,55 @@
+package luyao.util.ktx.lifecycle
+
+import android.app.Activity
+import java.util.*
+import java.lang.Class
+
+/**
+ * Created by luyao
+ * on 2019/8/6 10:58
+ */
+object KtxManager {
+
+    private val mActivityList = LinkedList<Activity>()
+
+    val currentActivity: Activity?
+        get() =
+            if (mActivityList.isEmpty()) null
+            else mActivityList.last
+
+
+    fun pushActivity(activity: Activity) {
+        if (mActivityList.contains(activity)) {
+            if (mActivityList.last != activity) {
+                mActivityList.remove(activity)
+                mActivityList.add(activity)
+            }
+        } else {
+            mActivityList.add(activity)
+        }
+    }
+
+    fun popActivity(activity: Activity) {
+        mActivityList.remove(activity)
+    }
+
+    fun finishCurrentActivity() {
+        currentActivity?.finish()
+    }
+
+    fun finishActivity(activity: Activity) {
+        mActivityList.remove(activity)
+        activity.finish()
+    }
+
+    fun  finishActivity(clazz: Class<*>){
+        for (activity in mActivityList)
+            if (activity.javaClass == clazz)
+                activity.finish()
+    }
+
+    fun finishAllActivity() {
+        for (activity in mActivityList)
+            activity.finish()
+    }
+}