Refactor backup flow and remove backup summary

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

@@ -16,7 +16,6 @@ import com.v2ray.ang.databinding.ActivityAboutBinding
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.extension.toastError
 import com.v2ray.ang.extension.toastSuccess
-import com.v2ray.ang.handler.MmkvManager
 import com.v2ray.ang.handler.SpeedtestManager
 import com.v2ray.ang.util.Utils
 import com.v2ray.ang.util.ZipUtil
@@ -27,7 +26,6 @@ import java.util.Locale
 class AboutActivity : BaseActivity() {
 
     private val binding by lazy { ActivityAboutBinding.inflate(layoutInflater) }
-    private val extDir by lazy { File(Utils.backupPath(this)) }
 
     private val requestPermissionLauncher =
         registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted ->
@@ -42,25 +40,50 @@ class AboutActivity : BaseActivity() {
             }
         }
 
+    private val createBackupFile =
+        registerForActivityResult(ActivityResultContracts.CreateDocument("application/zip")) { uri ->
+            if (uri != null) {
+                try {
+                    val ret = backupConfigurationToCache()
+                    if (ret.first) {
+                        // Copy the cached zip file to user-selected location
+                        contentResolver.openOutputStream(uri)?.use { output ->
+                            File(ret.second).inputStream().use { input ->
+                                input.copyTo(output)
+                            }
+                        }
+                        // Clean up cache file
+                        File(ret.second).delete()
+                        toastSuccess(R.string.toast_success)
+                    } else {
+                        toastError(R.string.toast_failure)
+                    }
+                } catch (e: Exception) {
+                    Log.e(AppConfig.TAG, "Failed to backup configuration", e)
+                    toastError(R.string.toast_failure)
+                }
+            }
+        }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(binding.root)
 
         title = getString(R.string.title_about)
 
-        binding.tvBackupSummary.text = this.getString(R.string.summary_configuration_backup, extDir)
-
         binding.layoutBackup.setOnClickListener {
-            val ret = backupConfiguration(extDir.absolutePath)
-            if (ret.first) {
-                toastSuccess(R.string.toast_success)
-            } else {
-                toastError(R.string.toast_failure)
-            }
+            val dateFormatted = SimpleDateFormat(
+                "yyyy-MM-dd-HH-mm-ss",
+                Locale.getDefault()
+            ).format(System.currentTimeMillis())
+            val defaultFileName = "${getString(R.string.app_name)}_${dateFormatted}.zip"
+            
+            // Let user choose where to save the backup file
+            createBackupFile.launch(defaultFileName)
         }
 
         binding.layoutShare.setOnClickListener {
-            val ret = backupConfiguration(cacheDir.absolutePath)
+            val ret = backupConfigurationToCache()
             if (ret.first) {
                 startActivity(
                     Intent.createChooser(
@@ -132,14 +155,18 @@ class AboutActivity : BaseActivity() {
         }
     }
 
-    private fun backupConfiguration(outputZipFilePos: String): Pair<Boolean, String> {
-        val dateFormated = SimpleDateFormat(
+    /**
+     * Backup configuration to cache directory
+     * Returns Pair<success, zipFilePath>
+     */
+    private fun backupConfigurationToCache(): Pair<Boolean, String> {
+        val dateFormatted = SimpleDateFormat(
             "yyyy-MM-dd-HH-mm-ss",
             Locale.getDefault()
         ).format(System.currentTimeMillis())
-        val folderName = "${getString(R.string.app_name)}_${dateFormated}"
+        val folderName = "${getString(R.string.app_name)}_${dateFormatted}"
         val backupDir = this.cacheDir.absolutePath + "/$folderName"
-        val outputZipFilePath = "$outputZipFilePos/$folderName.zip"
+        val outputZipFilePath = "${this.cacheDir.absolutePath}/$folderName.zip"
 
         val count = MMKV.backupAllToDirectory(backupDir)
         if (count <= 0) {

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

@@ -43,14 +43,6 @@
                         android:text="@string/title_configuration_backup"
                         android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />
 
-                    <TextView
-                        android:id="@+id/tv_backup_summary"
-                        android:layout_width="wrap_content"
-                        android:layout_height="wrap_content"
-                        android:layout_marginTop="@dimen/padding_spacing_dp16"
-                        android:maxLines="4"
-                        android:textAppearance="@style/TextAppearance.AppCompat.Small" />
-
                 </LinearLayout>
 
             </LinearLayout>

V2rayNG/app/src/main/res/values-ar/strings.xml

@@ -234,7 +234,6 @@
     <string name="title_oss_license">Open Source licenses</string>
     <string name="title_tg_channel">قناة Telegram</string>
     <string name="title_configuration_backup">نسخ التكوين احتياطيًا</string>
-    <string name="summary_configuration_backup">موقع التخزين: [%s]، سيتم مسح النسخة الاحتياطية بعد إلغاء تثبيت التطبيق أو مسح التخزين</string>
     <string name="title_configuration_restore">استعادة التكوين</string>
     <string name="title_configuration_share">مشاركة التكوين</string>
 

V2rayNG/app/src/main/res/values-bn/strings.xml

@@ -234,7 +234,6 @@
     <string name="title_oss_license">Open Source licenses</string>
     <string name="title_tg_channel">টেলিগ্রাম চ্যানেল</string>
     <string name="title_configuration_backup">কনফিগারেশন ব্যাকআপ</string>
-    <string name="summary_configuration_backup">স্টোরেজ অবস্থান: [%s], অ্যাপ আনইনস্টল বা স্টোরেজ ক্লিয়ার করার পরে ব্যাকআপ মুছে যাবে</string>
     <string name="title_configuration_restore">কনফিগারেশন পুনরুদ্ধার</string>
     <string name="title_configuration_share">কনফিগারেশন শেয়ার করুন</string>
 

V2rayNG/app/src/main/res/values-bqi-rIR/strings.xml

@@ -234,7 +234,6 @@
     <string name="title_oss_license">موجوزا کود بونچک</string>
     <string name="title_tg_channel">تورگه تلگرام</string>
     <string name="title_configuration_backup">لادراری گرؽڌن ز کانفیگ</string>
-    <string name="summary_configuration_backup">جاگه زفت کردن: [%s]، بعڌ پاک کردن برنومه یا پاک کردن جاگه زفت کردن، نوسخه لادرار هم پاک ابۊ.</string>
     <string name="title_configuration_restore">وورگندن کانفیگ</string>
     <string name="title_configuration_share">یک رسۊوی کانفیگ</string>
 

V2rayNG/app/src/main/res/values-fa/strings.xml

@@ -233,7 +233,6 @@
     <string name="title_oss_license">مجوز های منبع باز</string>
     <string name="title_tg_channel">کانال تلگرام</string>
     <string name="title_configuration_backup">پشتیبان گیری از پیکربندی</string>
-    <string name="summary_configuration_backup">محل ذخیره سازی: [%s], پس از حذف نصب برنامه یا پاک کردن فضای ذخیره سازی، نسخه پشتیبان پاک می شود</string>
     <string name="title_configuration_restore">بازیابی پیکربندی</string>
     <string name="title_configuration_share">اشتراک گذاری پیکربندی</string>
     <string name="title_pref_promotion">تبلیغات</string>

V2rayNG/app/src/main/res/values-ru/strings.xml

@@ -233,7 +233,6 @@
     <string name="title_oss_license">Лицензии открытого исходного кода</string>
     <string name="title_tg_channel">Telegram-канал</string>
     <string name="title_configuration_backup">Резервирование конфигурации</string>
-    <string name="summary_configuration_backup">Путь: [%s]. Резервная копия будет стёрта при удалении приложения или очистке хранилища.</string>
     <string name="title_configuration_restore">Восстановление конфигурации</string>
     <string name="title_configuration_share">Поделиться конфигурацией</string>
 

V2rayNG/app/src/main/res/values-vi/strings.xml

@@ -235,7 +235,6 @@
     <string name="title_oss_license">Open Source licenses</string>
     <string name="title_tg_channel">Kênh Telegram</string>
     <string name="title_configuration_backup">Sao lưu cấu hình</string>
-    <string name="summary_configuration_backup">Nơi lưu trữ: [%s], bản backup sẽ được dọn dẹp sau khi xóa ứng dụng hoặc xóa bộ nhớ.</string>
     <string name="title_configuration_restore">Khôi phục cấu hình</string>
     <string name="title_configuration_share">Chia sẻ cấu hình</string>
     <string name="title_pref_promotion">Quảng bá server</string>

V2rayNG/app/src/main/res/values-zh-rCN/strings.xml

@@ -231,7 +231,6 @@
     <string name="title_oss_license">Open Source licenses</string>
     <string name="title_tg_channel">Telegram 频道</string>
     <string name="title_configuration_backup">备份配置</string>
-    <string name="summary_configuration_backup">存储位置: [%s], 卸载 App 或清除存储后备份将被清除</string>
     <string name="title_configuration_restore">还原配置</string>
     <string name="title_configuration_share">分享配置</string>
 

V2rayNG/app/src/main/res/values-zh-rTW/strings.xml

@@ -232,7 +232,6 @@
     <string name="title_oss_license">Open Source licenses</string>
     <string name="title_tg_channel">Telegram 頻道</string>
     <string name="title_configuration_backup">備份設定</string>
-    <string name="summary_configuration_backup">儲存位置: [%s], 卸載App或清除儲存後備份將被清除</string>
     <string name="title_configuration_restore">還原設定</string>
     <string name="title_configuration_share">分享設定</string>
 

V2rayNG/app/src/main/res/values/strings.xml

@@ -237,7 +237,6 @@
     <string name="title_oss_license">Open Source licenses</string>
     <string name="title_tg_channel">Telegram channel</string>
     <string name="title_configuration_backup">Backup configuration</string>
-    <string name="summary_configuration_backup">Storage location: [%s], The backup will be cleared after uninstalling the app or clearing the storage</string>
     <string name="title_configuration_restore">Restore configuration</string>
     <string name="title_configuration_share">Share configuration</string>