Set minSdk to 32 and remove code for old SDKs

We can't go to 33 yet, because roboelectric doesn't support that

app/build.gradle

@@ -18,7 +18,7 @@ android {
     buildToolsVersion rootProject.ext.buildToolsVersion
 
     defaultConfig {
-        minSdkVersion 29 // leave at 29 for robolectric tests
+        minSdkVersion 32 // leave at 32 for robolectric tests
         targetSdkVersion rootProject.ext.targetSdkVersion
         versionNameSuffix "-$gitDescribe"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

app/src/main/java/com/stevesoltys/seedvault/restore/install/InstallProgressAdapter.kt

@@ -1,6 +1,5 @@
 package com.stevesoltys.seedvault.restore.install
 
-import android.os.Build.VERSION.SDK_INT
 import android.view.LayoutInflater
 import android.view.View
 import android.view.View.GONE
@@ -81,10 +80,8 @@ internal class InstallProgressAdapter(
                 IN_PROGRESS -> {
                     appStatus.visibility = INVISIBLE
                     progressBar.visibility = VISIBLE
-                    if (SDK_INT >= 30) {
-                        progressBar.stateDescription =
-                            context.getString(R.string.restore_app_status_installing)
-                    }
+                    progressBar.stateDescription =
+                        context.getString(R.string.restore_app_status_installing)
                 }
                 SUCCEEDED -> {
                     appStatus.setImageResource(R.drawable.ic_check_green)

app/src/main/java/com/stevesoltys/seedvault/ui/AppViewHolder.kt

@@ -2,7 +2,6 @@ package com.stevesoltys.seedvault.ui
 
 import android.content.Context
 import android.content.pm.PackageManager
-import android.os.Build.VERSION.SDK_INT
 import android.view.View
 import android.view.View.GONE
 import android.view.View.INVISIBLE
@@ -40,12 +39,10 @@ internal abstract class AppViewHolder(protected val v: View) : RecyclerView.View
             appInfo.visibility = GONE
             appStatus.visibility = INVISIBLE
             progressBar.visibility = VISIBLE
-            if (SDK_INT >= 30) {
-                progressBar.stateDescription = context.getString(
-                    if (isRestore) R.string.restore_restoring
-                    else R.string.backup_app_in_progress
-                )
-            }
+            progressBar.stateDescription = context.getString(
+                if (isRestore) R.string.restore_restoring
+                else R.string.backup_app_in_progress
+            )
         } else {
             appStatus.visibility = VISIBLE
             progressBar.visibility = INVISIBLE

app/src/main/java/com/stevesoltys/seedvault/ui/recoverycode/RecoveryCodeInputFragment.kt

@@ -6,7 +6,6 @@ import android.content.Intent
 import android.hardware.biometrics.BiometricManager.Authenticators.BIOMETRIC_STRONG
 import android.hardware.biometrics.BiometricManager.Authenticators.DEVICE_CREDENTIAL
 import android.hardware.biometrics.BiometricPrompt
-import android.os.Build.VERSION.SDK_INT
 import android.os.Bundle
 import android.os.CancellationSignal
 import android.view.LayoutInflater
@@ -22,7 +21,6 @@ import android.widget.TextView
 import android.widget.Toast
 import android.widget.Toast.LENGTH_LONG
 import androidx.activity.result.contract.ActivityResultContracts.StartActivityForResult
-import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AlertDialog
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.content.ContextCompat.getMainExecutor
@@ -122,9 +120,9 @@ class RecoveryCodeInputFragment : Fragment() {
         newCodeButton.visibility = if (forStoringNewCode) GONE else VISIBLE
         newCodeButton.setOnClickListener { generateNewCode() }
 
-        viewModel.existingCodeChecked.observeEvent(viewLifecycleOwner, { verified ->
+        viewModel.existingCodeChecked.observeEvent(viewLifecycleOwner) { verified ->
             onExistingCodeChecked(verified)
-        })
+        }
 
         if (forStoringNewCode && isDebugBuild() && !viewModel.isRestore) debugPreFill()
     }
@@ -147,7 +145,7 @@ class RecoveryCodeInputFragment : Fragment() {
         }
         if (forStoringNewCode) {
             val keyguardManager = requireContext().getSystemService(KeyguardManager::class.java)
-            if (SDK_INT >= 30 && keyguardManager.isDeviceSecure) {
+            if (keyguardManager.isDeviceSecure) {
                 // if we have a lock-screen secret, we can ask for it before storing the code
                 storeNewCodeAfterAuth(input)
             } else {
@@ -159,7 +157,6 @@ class RecoveryCodeInputFragment : Fragment() {
         }
     }
 
-    @RequiresApi(30)
     private fun storeNewCodeAfterAuth(input: List<CharSequence>) {
         val context = requireContext()
         val biometricPrompt = BiometricPrompt.Builder(context)

app/src/test/java/com/stevesoltys/seedvault/metadata/MetadataManagerTest.kt

@@ -41,7 +41,7 @@ import kotlin.random.Random
 @Suppress("DEPRECATION")
 @RunWith(AndroidJUnit4::class)
 @Config(
-    sdk = [29], // robolectric does not support 30, yet
+    sdk = [32], // robolectric does not support 33, yet
     application = TestApp::class
 )
 class MetadataManagerTest {

app/src/test/java/com/stevesoltys/seedvault/plugins/saf/DocumentFileTest.kt

@@ -19,7 +19,7 @@ import org.robolectric.annotation.Config
 
 @RunWith(AndroidJUnit4::class)
 @Config(
-    sdk = [29], // robolectric does not support 30, yet
+    sdk = [32], // robolectric does not support 33, yet
     application = TestApp::class
 )
 internal class DocumentFileTest {

app/src/test/java/com/stevesoltys/seedvault/restore/install/DeviceInfoTest.kt

@@ -22,7 +22,7 @@ import kotlin.random.Random
 
 @RunWith(AndroidJUnit4::class)
 @Config(
-    sdk = [29], // robolectric does not support 30, yet
+    sdk = [32], // robolectric does not support 33, yet
     application = TestApp::class
 )
 internal class DeviceInfoTest {
@@ -62,12 +62,10 @@ internal class DeviceInfoTest {
         assertFalse(deviceInfo.isSupportedLanguage("de"))
 
         // test areUnknownSplitsAllowed
-        val deviceName = "unknown robolectric"
+        assertTrue(deviceInfo.areUnknownSplitsAllowed("robolectric robolectric"))
         if (onlyOnSameDevice) {
-            assertTrue(deviceInfo.areUnknownSplitsAllowed(deviceName))
             assertFalse(deviceInfo.areUnknownSplitsAllowed("foo bar"))
         } else {
-            assertTrue(deviceInfo.areUnknownSplitsAllowed(deviceName))
             assertTrue(deviceInfo.areUnknownSplitsAllowed("foo bar"))
         }
     }

build.gradle

@@ -22,7 +22,7 @@ buildscript {
 ext {
     buildToolsVersion = '33.0.0'
     compileSdkVersion = 33
-    minSdkVersion = 29
+    minSdkVersion = 32
     targetSdkVersion = 33
 }
 

storage/demo/src/main/java/de/grobox/storagebackuptester/LogFragment.kt

@@ -1,11 +1,7 @@
 package de.grobox.storagebackuptester
 
-import android.Manifest.permission.ACCESS_MEDIA_LOCATION
-import android.Manifest.permission.WRITE_EXTERNAL_STORAGE
 import android.content.Intent
-import android.content.pm.PackageManager.PERMISSION_GRANTED
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.os.Environment
 import android.provider.Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION
@@ -21,7 +17,6 @@ import android.widget.Button
 import android.widget.ProgressBar
 import android.widget.Toast
 import android.widget.Toast.LENGTH_SHORT
-import androidx.activity.result.contract.ActivityResultContracts.RequestMultiplePermissions
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import androidx.recyclerview.widget.RecyclerView
@@ -43,13 +38,6 @@ open class LogFragment : Fragment() {
     private lateinit var button: Button
     private val adapter = LogAdapter()
 
-    private val permissionRequest =
-        registerForActivityResult(RequestMultiplePermissions()) { grantedMap ->
-            if (grantedMap[WRITE_EXTERNAL_STORAGE] == true) {
-                Toast.makeText(requireContext(), "Please try again now!", LENGTH_SHORT).show()
-            }
-        }
-
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
@@ -62,19 +50,19 @@ open class LogFragment : Fragment() {
         progressBar = v.findViewById(R.id.progressBar)
         horizontalProgressBar = v.findViewById(R.id.horizontalProgressBar)
         button = v.findViewById(R.id.button)
-        viewModel.backupLog.observe(viewLifecycleOwner, { progress ->
+        viewModel.backupLog.observe(viewLifecycleOwner) { progress ->
             progress.text?.let { adapter.addItem(it) }
             horizontalProgressBar.max = progress.total
             horizontalProgressBar.setProgress(progress.current, true)
             list.postDelayed({
                 list.scrollToPosition(adapter.itemCount - 1)
             }, 50)
-        })
-        viewModel.backupButtonEnabled.observe(viewLifecycleOwner, { enabled ->
+        }
+        viewModel.backupButtonEnabled.observe(viewLifecycleOwner) { enabled ->
             button.isEnabled = enabled
             progressBar.visibility = if (enabled) INVISIBLE else VISIBLE
             if (!enabled) adapter.clear()
-        })
+        }
         button.setOnClickListener {
             if (!checkPermission()) return@setOnClickListener
             viewModel.simulateBackup()
@@ -120,23 +108,13 @@ open class LogFragment : Fragment() {
     }
 
     private fun checkPermission(): Boolean {
-        return if (Build.VERSION.SDK_INT >= 30) {
-            if (Environment.isExternalStorageManager()) return true
-            Toast.makeText(requireContext(), "Permission needed", LENGTH_SHORT).show()
-            val i = Intent(ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION).apply {
-                data = Uri.parse("package:${requireContext().packageName}")
-            }
-            startActivity(i)
-            false
-        } else {
-            if (requireContext().checkSelfPermission(WRITE_EXTERNAL_STORAGE) == PERMISSION_GRANTED) {
-                true
-            } else {
-                Toast.makeText(requireContext(), "No storage permission", LENGTH_SHORT).show()
-                permissionRequest.launch(arrayOf(WRITE_EXTERNAL_STORAGE, ACCESS_MEDIA_LOCATION))
-                false
-            }
+        if (Environment.isExternalStorageManager()) return true
+        Toast.makeText(requireContext(), "Permission needed", LENGTH_SHORT).show()
+        val i = Intent(ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION).apply {
+            data = Uri.parse("package:${requireContext().packageName}")
         }
+        startActivity(i)
+        return false
     }
 
 }

storage/demo/src/main/java/de/grobox/storagebackuptester/settings/InfoFragment.kt

@@ -1,6 +1,5 @@
 package de.grobox.storagebackuptester.settings
 
-import android.os.Build.VERSION.SDK_INT
 import android.os.Bundle
 import android.provider.DocumentsContract
 import android.provider.MediaStore
@@ -39,16 +38,14 @@ class InfoFragment : MediaScanFragment() {
             } catch (e: IllegalArgumentException) {
                 e.toString()
             }
-            val gen = if (SDK_INT >= 30) try {
+            val gen = try {
                 MediaStore.getGeneration(context, volumeName)
             } catch (e: IllegalArgumentException) {
                 e.toString()
-            } else null
+            }
             sb.appendLine("  $volumeName")
             sb.appendLine("    version: $version")
-            if (gen != null) {
-                sb.appendLine("    generation:  $gen")
-            }
+            sb.appendLine("    generation:  $gen")
         }
         sb.appendLine()
         sb.appendLine("Media files smaller than 100 KB: ${mediaFilesSmallerThan(100 * 1024)}")

storage/lib/src/main/AndroidManifest.xml

@@ -3,13 +3,6 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="org.calyxos.backup.storage">
 
-    <uses-permission
-        android:name="android.permission.READ_EXTERNAL_STORAGE"
-        android:maxSdkVersion="29" />
-    <uses-permission
-        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
-        android:maxSdkVersion="29" />
-
     <uses-permission
         android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
         tools:ignore="ScopedStorage" />

storage/lib/src/main/java/org/calyxos/backup/storage/restore/FileRestore.kt

@@ -4,7 +4,6 @@ import android.content.ContentValues
 import android.content.Context
 import android.media.MediaScannerConnection
 import android.net.Uri
-import android.os.Build.VERSION.SDK_INT
 import android.os.Environment.getExternalStorageDirectory
 import android.provider.MediaStore.MediaColumns
 import android.util.Log
@@ -39,13 +38,7 @@ internal class FileRestore(
         val finalTag: String
         when {
             file.mediaFile != null -> {
-                bytes = if (SDK_INT < 30) {
-                    // MediaProvider on API 29 doesn't let us write files into any folders freely,
-                    // so don't attempt to restore via MediaStore API
-                    restoreFile(file, streamWriter)
-                } else {
-                    restoreFile(file.mediaFile, streamWriter)
-                }
+                bytes = restoreFile(file.mediaFile, streamWriter)
                 finalTag = "M$tag"
             }
             file.docFile != null -> {
@@ -112,10 +105,7 @@ internal class FileRestore(
             // changing owner requires backup permission
             put(MediaColumns.OWNER_PACKAGE_NAME, mediaFile.ownerPackageName)
             put(MediaColumns.IS_PENDING, 1)
-            if (SDK_INT >= 30) {
-                val isFavorite = if (mediaFile.isFavorite) 1 else 0
-                put(MediaColumns.IS_FAVORITE, isFavorite)
-            }
+            put(MediaColumns.IS_FAVORITE, if (mediaFile.isFavorite) 1 else 0)
         }
         val contentUri = MediaType.fromBackupMediaType(mediaFile.type).contentUri
         val uri = contentResolver.insert(contentUri, contentValues)!!

storage/lib/src/main/java/org/calyxos/backup/storage/scanner/MediaScanner.kt

@@ -5,13 +5,11 @@ import android.content.ContentUris
 import android.content.Context
 import android.database.Cursor
 import android.net.Uri
-import android.os.Build.VERSION.SDK_INT
 import android.os.Bundle
 import android.os.Environment
 import android.provider.MediaStore
 import android.provider.MediaStore.MediaColumns.IS_DOWNLOAD
 import android.util.Log
-import androidx.annotation.RequiresApi
 import androidx.core.database.getIntOrNull
 import androidx.core.database.getLongOrNull
 import androidx.core.database.getStringOrNull
@@ -23,7 +21,7 @@ import java.io.File
 public class MediaScanner(context: Context) {
 
     private companion object {
-        private val PROJECTION_29 = arrayOf(
+        private val PROJECTION = arrayOf(
             MediaStore.MediaColumns._ID,
             MediaStore.MediaColumns.RELATIVE_PATH,
             MediaStore.MediaColumns.DISPLAY_NAME,
@@ -31,10 +29,6 @@ public class MediaScanner(context: Context) {
             MediaStore.MediaColumns.SIZE,
             MediaStore.MediaColumns.OWNER_PACKAGE_NAME,
             MediaStore.MediaColumns.VOLUME_NAME,
-        )
-
-        @RequiresApi(30)
-        private val PROJECTION_30 = arrayOf(
             MediaStore.MediaColumns.IS_FAVORITE,
             MediaStore.MediaColumns.GENERATION_MODIFIED,
         )
@@ -59,7 +53,7 @@ public class MediaScanner(context: Context) {
     internal fun scanMediaUri(uri: Uri, extraQuery: String? = null): List<MediaFile> {
         val extras = Bundle().apply {
             val query = StringBuilder()
-            if (SDK_INT >= 30 && uri != MediaType.Downloads.contentUri) {
+            if (uri != MediaType.Downloads.contentUri) {
                 query.append("$IS_DOWNLOAD=0")
             }
             extraQuery?.let {
@@ -68,8 +62,7 @@ public class MediaScanner(context: Context) {
             }
             if (query.isNotEmpty()) putString(QUERY_ARG_SQL_SELECTION, query.toString())
         }
-        val projection = if (SDK_INT >= 30) PROJECTION_29 + PROJECTION_30 else PROJECTION_29
-        val cursor = contentResolver.query(uri, projection, extras, null)
+        val cursor = contentResolver.query(uri, PROJECTION, extras, null)
         return ArrayList<MediaFile>(cursor?.count ?: 0).apply {
             cursor?.use { c ->
                 while (c.moveToNext()) add(createMediaFile(c, uri))
@@ -94,13 +87,9 @@ public class MediaScanner(context: Context) {
             dir = cursor.getString(PROJECTION_PATH),
             fileName = cursor.getString(PROJECTION_NAME),
             dateModified = cursor.getLongOrNull(PROJECTION_DATE_MODIFIED),
-            generationModified = if (SDK_INT >= 30) cursor.getLongOrNull(
-                PROJECTION_GENERATION_MODIFIED
-            ) else null,
+            generationModified = cursor.getLongOrNull(PROJECTION_GENERATION_MODIFIED),
             size = cursor.getLong(PROJECTION_SIZE),
-            isFavorite = if (SDK_INT >= 30) {
-                cursor.getIntOrNull(PROJECTION_IS_FAVORITE) == 1
-            } else false,
+            isFavorite = cursor.getIntOrNull(PROJECTION_IS_FAVORITE) == 1,
             ownerPackageName = cursor.getStringOrNull(PROJECTION_OWNER_PACKAGE_NAME),
             volume = cursor.getString(PROJECTION_VOLUME_NAME)
         )

storage/lib/src/main/java/org/calyxos/backup/storage/ui/Notifications.kt

@@ -7,7 +7,6 @@ import android.app.NotificationManager
 import android.app.NotificationManager.IMPORTANCE_LOW
 import android.app.PendingIntent
 import android.content.Context
-import android.os.Build.VERSION.SDK_INT
 import androidx.annotation.DrawableRes
 import androidx.annotation.StringRes
 import androidx.core.app.NotificationCompat
@@ -145,7 +144,7 @@ internal class Notifications(private val context: Context) {
         setShowWhen(false)
         setWhen(System.currentTimeMillis())
         setProgress(expected, transferred, expected == 0)
-        if (SDK_INT >= 31) setForegroundServiceBehavior(FOREGROUND_SERVICE_IMMEDIATE)
+        setForegroundServiceBehavior(FOREGROUND_SERVICE_IMMEDIATE)
     }.build()
 
 }