Add multi-process support

longan/src/main/java/com/dylanc/longan/AppInitializer.kt

@@ -26,32 +26,8 @@ class AppInitializer : Initializer<Unit> {
   private var started = 0
 
   override fun create(context: Context) {
-    application = context as Application
-    application.doOnActivityLifecycle(
-      onActivityCreated = { activity, _ ->
-        activityCache.add(activity)
-      },
-      onActivityStarted = { activity ->
-        started++
-        if (started == 1) {
-          onAppStatusChangedListener?.onForeground(activity)
-        }
-      },
-      onActivityStopped = { activity ->
-        started--
-        if (started == 0) {
-          onAppStatusChangedListener?.onBackground(activity)
-        }
-      },
-      onActivityDestroyed = { activity ->
-        activityCache.remove(activity)
-      }
-    )
+    Longan.initialize(context as Application)
   }
 
   override fun dependencies() = emptyList<Class<Initializer<*>>>()
-
-  companion object {
-    internal var onAppStatusChangedListener: OnAppStatusChangedListener? = null
-  }
 }

longan/src/main/java/com/dylanc/longan/Application.kt

@@ -29,7 +29,6 @@ import android.content.res.Configuration.UI_MODE_NIGHT_MASK
 import android.content.res.Configuration.UI_MODE_NIGHT_YES
 import android.graphics.drawable.Drawable
 import android.net.Uri
-import android.os.Process
 import android.provider.Settings
 import androidx.core.content.pm.PackageInfoCompat
 
@@ -67,7 +66,7 @@ fun relaunchApp(killProcess: Boolean = true) =
   application.packageManager.getLaunchIntentForPackage(packageName)?.let {
     it.addFlags(FLAG_ACTIVITY_CLEAR_TASK or FLAG_ACTIVITY_CLEAR_TOP)
     startActivity(it)
-    if (killProcess) Process.killProcess(Process.myPid())
+    if (killProcess) killProcess()
   }
 
 fun doOnAppStatusChanged(onForeground: ((Activity) -> Unit)? = null, onBackground: ((Activity) -> Unit)? = null) =
@@ -82,7 +81,7 @@ fun doOnAppStatusChanged(onForeground: ((Activity) -> Unit)? = null, onBackgroun
   })
 
 fun doOnAppStatusChanged(listener: OnAppStatusChangedListener) {
-  AppInitializer.onAppStatusChangedListener = listener
+  Longan.onAppStatusChangedListener = listener
 }
 
 interface OnAppStatusChangedListener {

longan/src/main/java/com/dylanc/longan/Longan.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2021. Reone
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.dylanc.longan
+
+import android.app.Application
+
+object Longan {
+    private var started = 0
+    internal var onAppStatusChangedListener: OnAppStatusChangedListener? = null
+
+    fun initialize(app: Application) {
+        application = app
+        application.doOnActivityLifecycle(
+            onActivityCreated = { activity, _ ->
+                activityCache.add(activity)
+            },
+            onActivityStarted = { activity ->
+                started++
+                if (started == 1) {
+                    onAppStatusChangedListener?.onForeground(activity)
+                }
+            },
+            onActivityStopped = { activity ->
+                started--
+                if (started == 0) {
+                    onAppStatusChangedListener?.onBackground(activity)
+                }
+            },
+            onActivityDestroyed = { activity ->
+                activityCache.remove(activity)
+            }
+        )
+    }
+}

longan/src/main/java/com/dylanc/longan/Process.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2021. Reone
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+@file:Suppress("unused")
+
+package com.dylanc.longan
+
+import android.annotation.SuppressLint
+import android.app.ActivityManager
+import android.app.Application
+import android.content.Context
+import android.os.Build
+import android.os.Process
+
+fun killProcess(pid: Int = Process.myPid()) {
+    Process.killProcess(pid)
+}
+
+val Context.currentProcessName: String?
+    get() {
+        if (!cacheName.isNullOrEmpty()) {
+            return cacheName
+        }
+        cacheName = nameFromApplication ?: nameFromActivityThread ?: nameFromActivityManager
+        return cacheName
+    }
+
+private var cacheName: String? = null
+private val nameFromApplication: String?
+    get() = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) Application.getProcessName() else null
+private val nameFromActivityThread: String?
+    @SuppressLint("PrivateApi")
+    get() {
+        return runCatching {
+            var processName: String?
+            Class.forName("android.app.ActivityThread", false, Application::class.java.classLoader)
+                .getDeclaredMethod("currentProcessName", *arrayOfNulls<Class<*>?>(0)).let {
+                    it.isAccessible = true
+                    processName = it.invoke(null, *arrayOfNulls(0)) as String
+                }
+            return processName
+        }.getOrNull()
+    }
+private val Context.nameFromActivityManager: String?
+    get() {
+        val pid = Process.myPid()
+        (context.getSystemService(Context.ACTIVITY_SERVICE) as? ActivityManager)?.runningAppProcesses?.forEach {
+            if (it.pid == pid) {
+                return it.processName
+            }
+        }
+        return null
+    }

sample/src/main/AndroidManifest.xml

@@ -32,19 +32,22 @@
     </activity>
     <activity android:name=".ui.DialogsActivity" />
     <activity
-      android:name=".ui.SpannableStringActivity"
-      android:exported="true"></activity>
+        android:name=".ui.SpannableStringActivity"
+        android:exported="true" />
     <activity android:name=".ui.InputTextActivity" />
     <activity android:name=".ui.ActivityResultActivity" />
+    <activity
+        android:name=".ui.ProcessActivity"
+        android:process=":other" />
 
     <provider
-      android:name="androidx.core.content.FileProvider"
-      android:authorities="${applicationId}.provider"
-      android:exported="false"
-      android:grantUriPermissions="true">
+        android:name="androidx.core.content.FileProvider"
+        android:authorities="${applicationId}.provider"
+        android:exported="false"
+        android:grantUriPermissions="true">
       <meta-data
-        android:name="android.support.FILE_PROVIDER_PATHS"
-        android:resource="@xml/file_paths" />
+          android:name="android.support.FILE_PROVIDER_PATHS"
+          android:resource="@xml/file_paths" />
     </provider>
   </application>
 

sample/src/main/java/com/dylanc/longan/sample/App.kt

@@ -1,9 +1,7 @@
 package com.dylanc.longan.sample
 
 import android.app.Application
-import com.dylanc.longan.fileProviderAuthority
-import com.dylanc.longan.initLogger
-import com.dylanc.longan.saveCrashLogLocally
+import com.dylanc.longan.*
 
 /**
  * @author Dylan Cai
@@ -12,6 +10,9 @@ class App : Application() {
 
   override fun onCreate() {
     super.onCreate()
+    if (currentProcessName != BuildConfig.APPLICATION_ID) {
+      Longan.initialize(this)
+    }
     initLogger(BuildConfig.DEBUG)
     saveCrashLogLocally()
     fileProviderAuthority = "$packageName.provider"

sample/src/main/java/com/dylanc/longan/sample/ui/MainActivity.kt

@@ -13,7 +13,7 @@ import com.dylanc.viewbinding.binding
 class MainActivity : AppCompatActivity() {
 
   private val binding: ActivityRecyclerViewBinding by binding()
-  private val items = listOf(R.string.dialogs, R.string.spannable_string, R.string.activity_result)
+  private val items = listOf(R.string.dialogs, R.string.spannable_string, R.string.activity_result, R.string.activity_process)
   private val adapter by simpleIntListAdapter<ItemTextBinding> {
     tvTitle.setText(it)
   }
@@ -27,6 +27,7 @@ class MainActivity : AppCompatActivity() {
         R.string.dialogs -> startActivity<DialogsActivity>()
         R.string.spannable_string -> startActivity<SpannableStringActivity>()
         R.string.activity_result -> startActivity<ActivityResultActivity>()
+        R.string.activity_process -> startActivity<ProcessActivity>()
       }
     }
     pressBackTwiceToExitApp(R.string.exit_app)

sample/src/main/java/com/dylanc/longan/sample/ui/ProcessActivity.kt

@@ -0,0 +1,25 @@
+package com.dylanc.longan.sample.ui
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import com.dylanc.longan.currentProcessName
+import com.dylanc.longan.packageInfo
+import com.dylanc.longan.sample.databinding.ActivityRecyclerViewBinding
+import com.dylanc.longan.sample.databinding.ItemTextBinding
+import com.dylanc.viewbinding.base.simpleStringListAdapter
+import com.dylanc.viewbinding.binding
+
+class ProcessActivity : AppCompatActivity() {
+
+    private val binding: ActivityRecyclerViewBinding by binding()
+    private val items = listOf(packageInfo.packageName, packageInfo.versionName, "process: $currentProcessName")
+    private val adapter by simpleStringListAdapter<ItemTextBinding> {
+        tvTitle.text = it
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding.recyclerView.adapter = adapter
+        adapter.submitList(items)
+    }
+}

sample/src/main/res/values/strings.xml

@@ -4,6 +4,7 @@
   <string name="dialogs">Dialogs</string>
   <string name="spannable_string">SpannableString</string>
   <string name="activity_result">ActivityResult</string>
+  <string name="activity_process">OtherProcessInit</string>
   <string name="selector">selector</string>
   <string name="single_choice_selector">single choice selector</string>
   <string name="multi_choice_selector">multi choice selector</string>