Support hiding app icon (#492)

app/src/main/AndroidManifest.xml

@@ -45,15 +45,23 @@
             android:launchMode="singleTop">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
-                <category android:name="android.intent.category.LAUNCHER" />
-                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
-                <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
             <intent-filter>
                 <action android:name="android.service.quicksettings.action.QS_TILE_PREFERENCES" />
             </intent-filter>
         </activity>
+        <activity-alias
+            android:name=".MainActivityAlias"
+            android:exported="true"
+            android:targetActivity=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity-alias>
+
         <activity
             android:name=".ExternalControlActivity"
             android:exported="true"
@@ -197,5 +205,14 @@
                 <action android:name="android.intent.action.MY_PACKAGE_REPLACED" />
             </intent-filter>
         </receiver>
+
+        <receiver android:name=".DialerReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.provider.Telephony.SECRET_CODE" />
+                <!-- 252746382 is the name of Clash Meta in T9 -->
+                <data android:scheme="android_secret_code" android:host="252746382" />
+            </intent-filter>
+        </receiver>
     </application>
 </manifest>

app/src/main/java/com/github/kr328/clash/AppSettingsActivity.kt

@@ -1,5 +1,6 @@
 package com.github.kr328.clash
 
+import android.content.ComponentName
 import android.content.pm.PackageManager
 import com.github.kr328.clash.common.util.componentName
 import com.github.kr328.clash.design.AppSettingsDesign
@@ -17,6 +18,7 @@ class AppSettingsActivity : BaseActivity<AppSettingsDesign>(), Behavior {
             ServiceStore(this),
             this,
             clashRunning,
+            ::onHideIconChange,
         )
 
         setContentDesign(design)
@@ -59,4 +61,17 @@ class AppSettingsActivity : BaseActivity<AppSettingsDesign>(), Behavior {
                 PackageManager.DONT_KILL_APP,
             )
         }
+
+    private fun onHideIconChange(hide: Boolean) {
+        val newState = if (hide) {
+            PackageManager.COMPONENT_ENABLED_STATE_DISABLED
+        } else {
+            PackageManager.COMPONENT_ENABLED_STATE_ENABLED
+        }
+        packageManager.setComponentEnabledSetting(
+            ComponentName(this, mainActivityAlias),
+            newState,
+            PackageManager.DONT_KILL_APP
+        )
+    }
 }

app/src/main/java/com/github/kr328/clash/DialerReceiver.kt

@@ -0,0 +1,13 @@
+package com.github.kr328.clash
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+
+class DialerReceiver : BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+        val intent = Intent(context, MainActivity::class.java)
+            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        context.startActivity(intent)
+    }
+}

app/src/main/java/com/github/kr328/clash/MainActivity.kt

@@ -159,3 +159,5 @@ class MainActivity : BaseActivity<MainDesign>() {
         }
     }
 }
+
+val mainActivityAlias = "${MainActivity::class.java.name}Alias"

design/src/main/java/com/github/kr328/clash/design/AppSettingsDesign.kt

@@ -19,6 +19,7 @@ class AppSettingsDesign(
     srvStore: ServiceStore,
     behavior: Behavior,
     running: Boolean,
+    onHideIconChange: (hide: Boolean) -> Unit,
 ) : Design<AppSettingsDesign.Request>(context) {
     enum class Request {
         ReCreateAllActivities
@@ -65,6 +66,17 @@ class AppSettingsDesign(
                 }
             }
 
+            switch(
+                value = uiStore::hideAppIcon,
+                icon = R.drawable.ic_baseline_hide,
+                title = R.string.hide_app_icon_title,
+                summary = R.string.hide_app_icon_desc,
+            ) {
+                listener = OnChangedListener {
+                    onHideIconChange(uiStore::hideAppIcon.get())
+                }
+            }
+
             category(R.string.service)
 
             switch(

design/src/main/java/com/github/kr328/clash/design/store/UiStore.kt

@@ -25,6 +25,11 @@ class UiStore(context: Context) {
         values = DarkMode.values()
     )
 
+    var hideAppIcon: Boolean by store.boolean(
+        key = "hide_app_icon",
+        defaultValue = false
+    )
+
     var proxyExcludeNotSelectable by store.boolean(
         key = "proxy_exclude_not_selectable",
         defaultValue = false,

design/src/main/res/drawable/ic_baseline_hide.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M825.9,134.2l51.7,51.7 -655.1,655.1 -51.7,-51.7 655.1,-655.1zM804.4,325.8c41.3,39.5 81.3,87.9 120,145.3a73.1,73.1 0,0 1,2.8 77.4l-2.8,4.4 -6.9,10.1C795.2,740.3 660,829 512,829c-58.4,0 -114.9,-13.8 -169.3,-41.4l55.1,-55.1c37.4,15.7 75.5,23.4 114.2,23.4 120.9,0 235.5,-75.1 345.1,-234l6.7,-9.8 -6.7,-9.8c-34.3,-49.7 -69,-91.2 -104.4,-124.7l51.7,-51.7zM512,195c51.4,0 101.3,10.7 149.7,32.1l-56.5,56.5A289.4,289.4 0,0 0,512 268.2c-120.9,0 -235.5,75.1 -345.1,234L160.2,512l6.7,9.8c29.5,42.8 59.4,79.5 89.7,110.3l-51.7,51.7c-36.1,-36.7 -71.3,-80.3 -105.4,-130.9a73.1,73.1 0,0 1,-2.8 -77.4l2.8,-4.4 6.9,-10.1C228.8,283.7 364,195 512,195zM664.8,465.4a161.7,161.7 0,0 1,-205.8 205.8l65.1,-65.1a88.6,88.6 0,0 0,75.6 -75.6l65.1,-65.1zM512,356.7c6.4,0 12.8,0.4 19,1.1l-179.5,179.6A161.7,161.7 0,0 1,512 356.7z" />
+
+</vector>

design/src/main/res/values-zh/strings.xml

@@ -37,6 +37,8 @@
     <string name="format_profile_activated">%s 已激活</string>
     <string name="format_traffic_forwarded">%s 已转发</string>
     <string name="global_mode">全局模式</string>
+    <string name="hide_app_icon_title">隐藏应用图标</string>
+    <string name="hide_app_icon_desc">可以在拨号盘输入 *#*#252746382#*#* 打开应用</string>
     <string name="history">历史</string>
     <string name="import_from_file">从文件导入</string>
     <string name="import_from_url">从 URL 导入</string>

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

@@ -341,4 +341,7 @@
     <string name="external_control_activity">External Control</string>
     <string name="external_control_started">Clash.Meta service started</string>
     <string name="external_control_stopped">Clash.Meta service stopped</string>
+
+    <string name="hide_app_icon_title">Hide App Icon</string>
+    <string name="hide_app_icon_desc">You can dial *#*#252746382#*#* to open this App</string>
 </resources>