Add app picker and process picker integration

Introduce an AppPickerActivity to browse and select installed apps (with search, select-all and invert selection). Add AppSelectorAdapter, activity_app_picker layout and menu_app_picker menu, and register the activity in AndroidManifest.xml. Integrate the picker into RoutingEditActivity using an ActivityResult launcher and add a btn_process_picker to the routing edit layout; selected package list is loaded into the process EditText. Minor UI adjustments include padding for the EditText and marking system apps in the list.

V2rayNG/app/src/main/AndroidManifest.xml

@@ -88,6 +88,9 @@
         <activity
             android:name=".ui.PerAppProxyActivity"
             android:exported="false" />
+        <activity
+            android:name=".ui.AppPickerActivity"
+            android:exported="false" />
         <activity
             android:name=".ui.ScannerActivity"
             android:exported="false" />

V2rayNG/app/src/main/java/com/v2ray/ang/ui/AppPickerActivity.kt

@@ -0,0 +1,179 @@
+package com.v2ray.ang.ui
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import androidx.appcompat.widget.SearchView
+import androidx.lifecycle.lifecycleScope
+import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivityAppPickerBinding
+import com.v2ray.ang.dto.AppInfo
+import com.v2ray.ang.util.AppManagerUtil
+import com.v2ray.ang.util.LogUtil
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import java.text.Collator
+
+class AppPickerActivity : BaseActivity() {
+    companion object {
+        private const val EXTRA_SELECTED_PACKAGES = "selected_packages"
+        private const val EXTRA_PICKER_TITLE = "picker_title"
+
+        fun createIntent(
+            context: Context,
+            selectedPackages: Collection<String> = emptyList(),
+            title: String? = null
+        ): Intent = Intent(context, AppPickerActivity::class.java).apply {
+            putStringArrayListExtra(EXTRA_SELECTED_PACKAGES, ArrayList(selectedPackages))
+            title?.let { putExtra(EXTRA_PICKER_TITLE, it) }
+        }
+
+        fun getSelectedPackages(intent: Intent?): List<String> {
+            return intent?.getStringArrayListExtra(EXTRA_SELECTED_PACKAGES).orEmpty()
+        }
+    }
+
+    private val binding by lazy { ActivityAppPickerBinding.inflate(layoutInflater) }
+    private val initialSelectedPackages by lazy {
+        intent.getStringArrayListExtra(EXTRA_SELECTED_PACKAGES).orEmpty()
+    }
+    private val selectedPackages = LinkedHashSet<String>()
+    private var appsAll: List<AppInfo> = emptyList()
+    private val adapter = AppSelectorAdapter(selectedPackages)
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentViewWithToolbar(binding.root, showHomeAsUp = true, title = resolveScreenTitle())
+
+        selectedPackages.addAll(initialSelectedPackages)
+        setupRecyclerView()
+        loadApps()
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.menu_app_picker, menu)
+
+        val searchItem = menu.findItem(R.id.search_view)
+        if (searchItem != null) {
+            val searchView = searchItem.actionView as SearchView
+            searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+                override fun onQueryTextSubmit(query: String?): Boolean = false
+
+                override fun onQueryTextChange(newText: String?): Boolean {
+                    filterApps(newText.orEmpty())
+                    return false
+                }
+            })
+        }
+
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
+        R.id.select_all -> {
+            selectAllVisible()
+            true
+        }
+
+        R.id.invert_selection -> {
+            invertVisibleSelection()
+            true
+        }
+
+        else -> super.onOptionsItemSelected(item)
+    }
+
+    override fun finish() {
+        setResult(
+            RESULT_OK,
+            Intent().apply {
+                putStringArrayListExtra(EXTRA_SELECTED_PACKAGES, getSelectedPackages())
+            }
+        )
+        super.finish()
+    }
+
+    private fun setupRecyclerView() {
+        binding.recyclerView.adapter = adapter
+        addCustomDividerToRecyclerView(binding.recyclerView, this, R.drawable.custom_divider)
+    }
+
+    private fun loadApps() {
+        showLoading()
+
+        lifecycleScope.launch {
+            try {
+                val apps = withContext(Dispatchers.IO) {
+                    val appsList = AppManagerUtil.loadNetworkAppList(this@AppPickerActivity)
+                    sortApps(appsList)
+                }
+
+                appsAll = apps
+                updateDisplayedApps(apps)
+            } catch (e: Exception) {
+                LogUtil.e("AppPickerActivity", "Failed to load app list", e)
+            } finally {
+                hideLoading()
+            }
+        }
+    }
+
+    private fun filterApps(content: String) {
+        val key = content.uppercase()
+        val filteredApps = appsAll.filter { app ->
+            key.isEmpty() || matchesSearch(app, key)
+        }
+        updateDisplayedApps(filteredApps)
+    }
+
+    private fun sortApps(apps: List<AppInfo>): List<AppInfo> {
+        val collator = Collator.getInstance()
+        return apps.sortedWith { p1, p2 ->
+            val p1Selected = selectedPackages.contains(p1.packageName)
+            val p2Selected = selectedPackages.contains(p2.packageName)
+            when {
+                p1Selected && !p2Selected -> -1
+                !p1Selected && p2Selected -> 1
+                p1.isSystemApp && !p2.isSystemApp -> 1
+                !p1.isSystemApp && p2.isSystemApp -> -1
+                else -> collator.compare(p1.appName, p2.appName)
+            }
+        }
+    }
+
+    private fun matchesSearch(app: AppInfo, keyword: String): Boolean {
+        return app.appName.uppercase().contains(keyword) || app.packageName.uppercase().contains(keyword)
+    }
+
+    private fun updateDisplayedApps(apps: List<AppInfo>) {
+        adapter.submitList(apps)
+    }
+
+    private fun selectAllVisible() {
+        adapter.apps.forEach { app -> selectedPackages.add(app.packageName) }
+        adapter.refreshSelection()
+    }
+
+    private fun invertVisibleSelection() {
+        adapter.apps.forEach { app ->
+            if (selectedPackages.contains(app.packageName)) {
+                selectedPackages.remove(app.packageName)
+            } else {
+                selectedPackages.add(app.packageName)
+            }
+        }
+        adapter.refreshSelection()
+    }
+
+    private fun getSelectedPackages(): ArrayList<String> {
+        return ArrayList(selectedPackages.sorted())
+    }
+
+    private fun resolveScreenTitle(): String {
+        return intent.getStringExtra(EXTRA_PICKER_TITLE) ?: getString(R.string.per_app_proxy_settings)
+    }
+}
+

V2rayNG/app/src/main/java/com/v2ray/ang/ui/AppSelectorAdapter.kt

@@ -0,0 +1,64 @@
+package com.v2ray.ang.ui
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.v2ray.ang.databinding.ItemRecyclerBypassListBinding
+import com.v2ray.ang.dto.AppInfo
+
+class AppSelectorAdapter(
+    private val selectedPackages: MutableSet<String>
+) : RecyclerView.Adapter<AppSelectorAdapter.AppViewHolder>() {
+
+    var apps: List<AppInfo> = emptyList()
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AppViewHolder {
+        val binding = ItemRecyclerBypassListBinding.inflate(LayoutInflater.from(parent.context), parent, false)
+        return AppViewHolder(binding)
+    }
+
+    override fun getItemCount(): Int = apps.size
+
+    override fun onBindViewHolder(holder: AppViewHolder, position: Int) {
+        holder.bind(apps[position])
+    }
+
+    fun submitList(newApps: List<AppInfo>) {
+        apps = newApps
+        notifyDataSetChanged()
+    }
+
+    fun refreshSelection() {
+        notifyDataSetChanged()
+    }
+
+    inner class AppViewHolder(private val binding: ItemRecyclerBypassListBinding) : RecyclerView.ViewHolder(binding.root),
+        View.OnClickListener {
+        private lateinit var appInfo: AppInfo
+
+        fun bind(item: AppInfo) {
+            appInfo = item
+            binding.icon.setImageDrawable(item.appIcon)
+            binding.name.text = if (item.isSystemApp) {
+                String.format("** %s", item.appName)
+            } else {
+                item.appName
+            }
+            binding.packageName.text = item.packageName
+            binding.checkBox.isChecked = selectedPackages.contains(item.packageName)
+            itemView.setOnClickListener(this)
+        }
+
+        override fun onClick(v: View?) {
+            val packageName = appInfo.packageName
+            if (selectedPackages.contains(packageName)) {
+                selectedPackages.remove(packageName)
+            } else {
+                selectedPackages.add(packageName)
+            }
+            binding.checkBox.isChecked = selectedPackages.contains(packageName)
+        }
+    }
+}
+

V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingEditActivity.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import android.widget.ArrayAdapter
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
 import androidx.lifecycle.lifecycleScope
 import com.v2ray.ang.AppConfig.BUILTIN_OUTBOUND_TAGS
@@ -23,12 +24,19 @@ import kotlinx.coroutines.launch
 class RoutingEditActivity : BaseActivity() {
     private val binding by lazy { ActivityRoutingEditBinding.inflate(layoutInflater) }
     private val position by lazy { intent.getIntExtra("position", -1) }
+    private val processPickerLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+        if (result.resultCode == RESULT_OK) {
+            val selectedPackages = AppPickerActivity.getSelectedPackages(result.data)
+            binding.etProcess.text = Utils.getEditable(selectedPackages.joinToString(","))
+        }
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentViewWithToolbar(binding.root, showHomeAsUp = true, title = getString(R.string.routing_settings_rule_title))
 
         setupOutboundTagInput()
+        setupProcessPicker()
 
         val rulesetItem = SettingsManager.getRoutingRuleset(position)
         if (rulesetItem != null) {
@@ -39,9 +47,31 @@ class RoutingEditActivity : BaseActivity() {
 
         SettingsManager.canUseProcessRouting().let { canUse ->
             binding.etProcess.isEnabled = canUse
+            binding.btnProcessPicker.isEnabled = canUse
         }
     }
 
+    private fun setupProcessPicker() {
+        binding.btnProcessPicker.setOnClickListener {
+            processPickerLauncher.launch(
+                AppPickerActivity.createIntent(
+                    context = this,
+                    selectedPackages = getSelectedProcessPackages(),
+                    title = getString(R.string.routing_settings_process)
+                )
+            )
+        }
+    }
+
+    private fun getSelectedProcessPackages(): List<String> {
+        return binding.etProcess.text
+            .toString()
+            .split(",")
+            .map { it.trim() }
+            .filter { it.isNotEmpty() }
+            .distinct()
+    }
+
     /**
      * Sets up the AutoCompleteTextView for outbound tag:
      * suggestions = built-in tags (proxy/direct/block) + all existing profile remarks.

V2rayNG/app/src/main/res/layout/activity_app_picker.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/recycler_view"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:scrollbars="vertical"
+    app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
+
+

V2rayNG/app/src/main/res/layout/activity_routing_edit.xml

@@ -114,13 +114,34 @@
                     android:layout_height="wrap_content"
                     android:text="@string/routing_settings_process" />
 
-                <EditText
-                    android:id="@+id/et_process"
+                <RelativeLayout
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:hint="@string/routing_settings_tips"
-                    android:inputType="textMultiLine"
-                    android:maxLines="10" />
+                    android:layout_marginTop="@dimen/padding_spacing_dp8"
+                    android:layout_marginBottom="@dimen/padding_spacing_dp8">
+
+                    <EditText
+                        android:id="@+id/et_process"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:hint="@string/routing_settings_tips"
+                        android:inputType="textMultiLine"
+                        android:maxLines="10"
+                        android:minHeight="48dp"
+                        android:paddingStart="0dp"
+                        android:paddingEnd="48dp" />
+
+                    <ImageButton
+                        android:id="@+id/btn_process_picker"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_alignParentEnd="true"
+                        android:layout_centerVertical="true"
+                        android:background="?attr/selectableItemBackgroundBorderless"
+                        android:contentDescription="@string/routing_settings_process"
+                        android:src="@drawable/ic_per_apps_24dp" />
+
+                </RelativeLayout>
             </LinearLayout>
 
             <LinearLayout

V2rayNG/app/src/main/res/menu/menu_app_picker.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/search_view"
+        android:icon="@drawable/ic_description_24dp"
+        android:title="@string/menu_item_search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="ifRoom" />
+
+    <item
+        android:id="@+id/select_all"
+        android:icon="@drawable/ic_select_all_24dp"
+        android:title="@string/menu_item_select_all"
+        app:showAsAction="withText" />
+
+    <item
+        android:id="@+id/invert_selection"
+        android:icon="@drawable/ic_select_all_24dp"
+        android:title="@string/menu_item_invert_selection"
+        app:showAsAction="withText" />
+
+</menu>
+