add storage abstraction, work on moving to StorageFile

Clover/app/src/main/java/org/floens/chan/controller/Controller.java

@@ -18,6 +18,7 @@
 package org.floens.chan.controller;
 
 import android.content.Context;
+import android.content.Intent;
 import android.content.res.Configuration;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
@@ -135,6 +136,9 @@ public abstract class Controller {
             controller.navigationController = navigationController;
         }
         controller.onCreate();
+        if (controller.view == null) {
+            throw new IllegalArgumentException("Controller has no view");
+        }
     }
 
     public boolean removeChildController(Controller controller) {
@@ -186,6 +190,12 @@ public abstract class Controller {
         return false;
     }
 
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        for (Controller childController : childControllers) {
+            childController.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
     public void presentController(Controller controller) {
         presentController(controller, true);
     }

Clover/app/src/main/java/org/floens/chan/core/saver/ImageSaveTask.java

@@ -19,15 +19,14 @@ package org.floens.chan.core.saver;
 
 import android.content.Intent;
 import android.graphics.Bitmap;
-import android.media.MediaScannerConnection;
 import android.net.Uri;
 
-import org.floens.chan.core.cache.FileCacheListener;
 import org.floens.chan.core.cache.FileCache;
 import org.floens.chan.core.cache.FileCacheDownloader;
+import org.floens.chan.core.cache.FileCacheListener;
 import org.floens.chan.core.model.PostImage;
+import org.floens.chan.core.storage.StorageFile;
 import org.floens.chan.utils.AndroidUtils;
-import org.floens.chan.utils.IOUtils;
 import org.floens.chan.utils.ImageDecoder;
 import org.floens.chan.utils.Logger;
 
@@ -38,7 +37,6 @@ import javax.inject.Inject;
 
 import static org.floens.chan.Chan.inject;
 import static org.floens.chan.utils.AndroidUtils.dp;
-import static org.floens.chan.utils.AndroidUtils.getAppContext;
 
 public class ImageSaveTask extends FileCacheListener implements Runnable {
     private static final String TAG = "ImageSaveTask";
@@ -48,7 +46,7 @@ public class ImageSaveTask extends FileCacheListener implements Runnable {
 
     private PostImage postImage;
     private ImageSaveTaskCallback callback;
-    private File destination;
+    private StorageFile destination;
     private boolean share;
     private boolean makeBitmap;
     private Bitmap bitmap;
@@ -78,11 +76,11 @@ public class ImageSaveTask extends FileCacheListener implements Runnable {
         return postImage;
     }
 
-    public void setDestination(File destination) {
+    public void setDestination(StorageFile destination) {
         this.destination = destination;
     }
 
-    public File getDestination() {
+    public StorageFile getDestination() {
         return destination;
     }
 
@@ -165,46 +163,32 @@ public class ImageSaveTask extends FileCacheListener implements Runnable {
         success = true;
         scanDestination();
         if (makeBitmap) {
-            bitmap = ImageDecoder.decodeFile(destination, dp(512), dp(256));
+            try {
+                bitmap = ImageDecoder.decodeFile(destination.inputStream(), dp(512), dp(256));
+            } catch (IOException e) {
+                Logger.e(TAG, "onDestination decodeFile", e);
+                bitmap = null;
+            }
         }
     }
 
     private boolean copyToDestination(File source) {
-        boolean result = false;
-
         try {
-            File parent = destination.getParentFile();
+            destination.copyFrom(source);
-            if (!parent.mkdirs() && !parent.isDirectory()) {
+            return true;
-                throw new IOException("Could not create parent directory");
-            }
-
-            if (destination.isDirectory()) {
-                throw new IOException("Destination file is already a directory");
-            }
-
-            IOUtils.copyFile(source, destination);
-
-            result = true;
         } catch (IOException e) {
-            Logger.e(TAG, "Error writing to file", e);
+            Logger.e(TAG, "copyToDestination copyFrom", e);
         }
 
-        return result;
+        return false;
     }
 
     private void scanDestination() {
-        MediaScannerConnection.scanFile(getAppContext(), new String[]{destination.getAbsolutePath()}, null, new MediaScannerConnection.OnScanCompletedListener() {
+        // TODO
-            @Override
+//        MediaScannerConnection.scanFile(getAppContext(), new String[]{destination.getAbsolutePath()}, null, (path, uri) -> {
-            public void onScanCompleted(String path, final Uri uri) {
+//             Runs on a binder thread
-                // Runs on a binder thread
+//            AndroidUtils.runOnUiThread(() -> afterScan(uri));
-                AndroidUtils.runOnUiThread(new Runnable() {
+//        });
-                    @Override
-                    public void run() {
-                        afterScan(uri);
-                    }
-                });
-            }
-        });
     }
 
     private void afterScan(final Uri uri) {

Clover/app/src/main/java/org/floens/chan/core/saver/ImageSaver.java

@@ -27,6 +27,8 @@ import android.widget.Toast;
 import org.floens.chan.R;
 import org.floens.chan.core.model.PostImage;
 import org.floens.chan.core.settings.ChanSettings;
+import org.floens.chan.core.storage.Storage;
+import org.floens.chan.core.storage.StorageFile;
 import org.floens.chan.ui.activity.StartActivity;
 import org.floens.chan.ui.helper.RuntimePermissionsHelper;
 import org.floens.chan.ui.service.SavingNotification;
@@ -37,11 +39,15 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.regex.Pattern;
 
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
 import de.greenrobot.event.EventBus;
 
 import static org.floens.chan.utils.AndroidUtils.getAppContext;
 import static org.floens.chan.utils.AndroidUtils.getString;
 
+@Singleton
 public class ImageSaver implements ImageSaveTask.ImageSaveTaskCallback {
     private static final String TAG = "ImageSaver";
     private static final int MAX_RENAME_TRIES = 500;
@@ -49,18 +55,18 @@ public class ImageSaver implements ImageSaveTask.ImageSaveTaskCallback {
     private static final int MAX_NAME_LENGTH = 50;
     private static final Pattern REPEATED_UNDERSCORES_PATTERN = Pattern.compile("_+");
     private static final Pattern SAFE_CHARACTERS_PATTERN = Pattern.compile("[^a-zA-Z0-9._]");
-    private static final ImageSaver instance = new ImageSaver();
     private NotificationManager notificationManager;
     private ExecutorService executor = Executors.newSingleThreadExecutor();
     private int doneTasks = 0;
     private int totalTasks = 0;
     private Toast toast;
 
-    public static ImageSaver getInstance() {
+    private Storage storage;
-        return instance;
+
-    }
+    @Inject
+    public ImageSaver(Storage storage) {
+        this.storage = storage;
 
-    private ImageSaver() {
         EventBus.getDefault().register(this);
         notificationManager = (NotificationManager) getAppContext().getSystemService(Context.NOTIFICATION_SERVICE);
     }
@@ -68,8 +74,13 @@ public class ImageSaver implements ImageSaveTask.ImageSaveTaskCallback {
     public void startDownloadTask(Context context, final ImageSaveTask task) {
         PostImage postImage = task.getPostImage();
         String name = ChanSettings.saveOriginalFilename.get() ? postImage.originalName : postImage.filename;
-        String fileName = filterName(name + "." + postImage.extension);
+//        String fileName = filterName(name + "." + postImage.extension);
-        task.setDestination(findUnusedFileName(new File(getSaveLocation(task), fileName), false));
+
+        // TODO
+        StorageFile file = storage.obtainStorageFileForName(name + "." + postImage.extension);
+        task.setDestination(file);
+
+//        task.setDestination(findUnusedFileName(new File(getSaveLocation(task), fileName), false));
 
 //        task.setMakeBitmap(true);
         task.setShowToast(true);
@@ -163,9 +174,9 @@ public class ImageSaver implements ImageSaveTask.ImageSaveTaskCallback {
         for (ImageSaveTask task : tasks) {
             PostImage postImage = task.getPostImage();
             String fileName = filterName(postImage.originalName + "." + postImage.extension);
-            task.setDestination(new File(getSaveLocation(task) + File.separator + subFolder + File.separator + fileName));
+            // TODO
-
+//            task.setDestination(new File(getSaveLocation(task) + File.separator + subFolder + File.separator + fileName));
-            startTask(task);
+//            startTask(task);
         }
         updateNotification();
     }
@@ -194,7 +205,7 @@ public class ImageSaver implements ImageSaveTask.ImageSaveTaskCallback {
         NotificationCompat.Builder builder = new NotificationCompat.Builder(getAppContext());
         builder.setSmallIcon(R.drawable.ic_stat_notify);
         builder.setContentTitle(getString(R.string.image_save_saved));
-        String savedAs = getAppContext().getString(R.string.image_save_as, task.getDestination().getName());
+        String savedAs = getAppContext().getString(R.string.image_save_as, task.getDestination().name());
         builder.setContentText(savedAs);
         builder.setPriority(NotificationCompat.PRIORITY_HIGH);
         builder.setStyle(new NotificationCompat.BigPictureStyle()
@@ -210,7 +221,7 @@ public class ImageSaver implements ImageSaveTask.ImageSaveTaskCallback {
         }
 
         String text = success ?
-                getAppContext().getString(R.string.image_save_as, task.getDestination().getName()) :
+                getAppContext().getString(R.string.image_save_as, task.getDestination().name()) :
                 getString(R.string.image_save_failed);
         toast = Toast.makeText(getAppContext(), text, Toast.LENGTH_LONG);
         toast.show();

Clover/app/src/main/java/org/floens/chan/core/settings/ChanSettings.java

@@ -115,6 +115,7 @@ public class ChanSettings {
     public static final BooleanSetting developer;
 
     public static final StringSetting saveLocation;
+    public static final StringSetting saveLocationTreeUri;
     public static final BooleanSetting saveOriginalFilename;
     public static final BooleanSetting shareUrl;
     public static final BooleanSetting enableReplyFab;
@@ -197,6 +198,7 @@ public class ChanSettings {
         saveLocation = new StringSetting(p, "preference_image_save_location", Environment.getExternalStorageDirectory() + File.separator + "Clover");
         saveLocation.addCallback((setting, value) ->
                 EventBus.getDefault().post(new SettingChanged<>(saveLocation)));
+        saveLocationTreeUri = new StringSetting(p, "preference_image_save_tree_uri", "");
         saveOriginalFilename = new BooleanSetting(p, "preference_image_save_original", false);
         shareUrl = new BooleanSetting(p, "preference_image_share_url", false);
         enableReplyFab = new BooleanSetting(p, "preference_enable_reply_fab", true);

Clover/app/src/main/java/org/floens/chan/core/storage/BaseStorageImpl.java

@@ -0,0 +1,38 @@
+package org.floens.chan.core.storage;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+
+public class BaseStorageImpl implements StorageImpl {
+    protected Context applicationContext;
+
+    public BaseStorageImpl(Context applicationContext) {
+        this.applicationContext = applicationContext;
+    }
+
+    @Override
+    public boolean supportsExternalStorage() {
+        return false;
+    }
+
+    @Override
+    public Intent getOpenTreeIntent() {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void handleOpenTreeIntent(Uri uri) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public StorageFile obtainStorageFileForName(String name) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public String currentStorageName() {
+        throw new UnsupportedOperationException();
+    }
+}

Clover/app/src/main/java/org/floens/chan/core/storage/LollipopStorageImpl.java

@@ -0,0 +1,106 @@
+package org.floens.chan.core.storage;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.provider.DocumentsContract;
+import android.support.annotation.RequiresApi;
+
+import org.floens.chan.core.settings.ChanSettings;
+import org.floens.chan.utils.IOUtils;
+import org.floens.chan.utils.Logger;
+
+import java.io.FileNotFoundException;
+
+@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
+public class LollipopStorageImpl extends BaseStorageImpl {
+    private static final String TAG = "LollipopStorageImpl";
+
+    public LollipopStorageImpl(Context applicationContext) {
+        super(applicationContext);
+    }
+
+    @Override
+    public boolean supportsExternalStorage() {
+        return true;
+    }
+
+    @Override
+    public Intent getOpenTreeIntent() {
+        return new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
+    }
+
+    @Override
+    public void handleOpenTreeIntent(Uri uri) {
+        String documentId = DocumentsContract.getTreeDocumentId(uri);
+        Uri treeDocumentUri = DocumentsContract.buildDocumentUriUsingTree(uri, documentId);
+
+        ChanSettings.saveLocationTreeUri.set(treeDocumentUri.toString());
+    }
+
+    @Override
+    public StorageFile obtainStorageFileForName(String name) {
+        String uriString = ChanSettings.saveLocationTreeUri.get();
+        if (uriString.isEmpty()) {
+            return null;
+        }
+
+        Uri treeUri = Uri.parse(uriString);
+
+        ContentResolver contentResolver = applicationContext.getContentResolver();
+
+        String documentId = DocumentsContract.getTreeDocumentId(treeUri);
+        Uri treeDocumentUri = DocumentsContract.buildDocumentUriUsingTree(treeUri, documentId);
+
+        Uri docUri;
+        try {
+            docUri = DocumentsContract.createDocument(contentResolver, treeDocumentUri,
+                    "text", name);
+        } catch (FileNotFoundException e) {
+            Logger.e(TAG, "obtainStorageFileForName createDocument", e);
+            return null;
+        }
+
+        return StorageFile.fromUri(contentResolver, docUri);
+    }
+
+    @Override
+    public String currentStorageName() {
+        String uriString = ChanSettings.saveLocationTreeUri.get();
+        if (uriString.isEmpty()) {
+            return null;
+        }
+
+        Uri treeUri = Uri.parse(uriString);
+        return queryTreeName(treeUri);
+    }
+
+    private String queryTreeName(Uri uri) {
+        ContentResolver contentResolver = applicationContext.getContentResolver();
+
+        Cursor c = null;
+        String name = null;
+        try {
+            c = contentResolver.query(uri, new String[]{
+                    DocumentsContract.Document.COLUMN_DISPLAY_NAME,
+                    DocumentsContract.Document.COLUMN_MIME_TYPE
+            }, null, null, null);
+
+            if (c != null && c.moveToNext()) {
+                name = c.getString(0);
+                // mime = c.getString(1);
+            }
+
+            return name;
+        } catch (Exception e) {
+            Logger.e(TAG, "queryTreeName", e);
+        } finally {
+            IOUtils.closeQuietly(c);
+        }
+
+        return null;
+    }
+}

Clover/app/src/main/java/org/floens/chan/core/storage/Storage.java

@@ -1,66 +1,58 @@
 package org.floens.chan.core.storage;
 
-import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.Intent;
+import android.net.Uri;
 import android.os.Build;
-import android.os.storage.StorageManager;
-import android.os.storage.StorageVolume;
-
-import java.util.Objects;
 
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+/**
+ * Abstraction of the storage APIs available in Android.
+ * <p>
+ * This is used primarily for saving images, especially on removable storage.
+ * <p>
+ * First, a good read:
+ * https://commonsware.com/blog/2017/11/13/storage-situation-internal-storage.html
+ * https://commonsware.com/blog/2017/11/14/storage-situation-external-storage.html
+ * https://commonsware.com/blog/2017/11/15/storage-situation-removable-storage.html
+ * <p>
+ * The Android Storage Access Framework can be used from Android 5.0 and higher. Since Android 5.0
+ * it has support for granting permissions for a directory, which we want to save our files to.
+ * <p>
+ * Otherwise a fallback is provided for only saving on the primary volume with the older APIs.
+ */
+@Singleton
 public class Storage {
-    private static final Storage instance;
+    private StorageImpl impl;
 
-    static {
+    @Inject
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
+    public Storage(Context applicationContext) {
-            instance = new Storage(new BaseStorageImpl());
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+            impl = new BaseStorageImpl(applicationContext);
         } else {
-            instance = new Storage(new NougatStorageImpl());
+            impl = new LollipopStorageImpl(applicationContext);
         }
-
-    }
-
-    public static Storage getInstance() {
-        return instance;
     }
 
-    private StorageImpl impl;
+    public boolean supportsExternalStorage() {
-
+        return impl.supportsExternalStorage();
-    public Storage(StorageImpl impl) {
-        this.impl = impl;
     }
 
-    public Intent requestExternalPermission(Context applicationContext) {
+    public Intent getOpenTreeIntent() {
-        return impl.requestExternalPermission(applicationContext);
+        return impl.getOpenTreeIntent();
     }
 
-    public interface StorageImpl {
+    public void handleOpenTreeIntent(Uri uri) {
-        Intent requestExternalPermission(Context applicationContext);
+        impl.handleOpenTreeIntent(uri);
     }
 
-    public static class BaseStorageImpl implements StorageImpl {
+    public StorageFile obtainStorageFileForName(String name) {
-        @Override
+        return impl.obtainStorageFileForName(name);
-        public Intent requestExternalPermission(Context applicationContext) {
-            throw new UnsupportedOperationException();
-        }
     }
 
-    @TargetApi(Build.VERSION_CODES.N)
+    public String currentStorageName() {
-    public static class NougatStorageImpl extends BaseStorageImpl {
+        return impl.currentStorageName();
-        @Override
-        public Intent requestExternalPermission(Context applicationContext) {
-            StorageManager sm = (StorageManager)
-                    applicationContext.getSystemService(Context.STORAGE_SERVICE);
-            Objects.requireNonNull(sm);
-            for (StorageVolume storageVolume : sm.getStorageVolumes()) {
-                if (!storageVolume.isPrimary()) {
-                    Intent accessIntent = storageVolume.createAccessIntent(null);
-                    return accessIntent;
-                }
-            }
-
-            return null;
-        }
     }
 }

Clover/app/src/main/java/org/floens/chan/core/storage/StorageFile.java

@@ -0,0 +1,93 @@
+package org.floens.chan.core.storage;
+
+import android.content.ContentResolver;
+import android.net.Uri;
+
+import org.floens.chan.utils.IOUtils;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public class StorageFile {
+    private final ContentResolver contentResolver;
+    private final Uri uriOpenableByContentResolvers;
+    private final File file;
+
+    public static StorageFile fromFile(File file) {
+        return new StorageFile(file);
+    }
+
+    public static StorageFile fromUri(ContentResolver contentResolver, Uri uriOpenableByContentResolvers) {
+        return new StorageFile(contentResolver, uriOpenableByContentResolvers);
+    }
+
+    private StorageFile(ContentResolver contentResolver, Uri uriOpenableByContentResolvers) {
+        this.contentResolver = contentResolver;
+        this.uriOpenableByContentResolvers = uriOpenableByContentResolvers;
+        this.file = null;
+    }
+
+    private StorageFile(File file) {
+        this.contentResolver = null;
+        this.uriOpenableByContentResolvers = null;
+        this.file = file;
+    }
+
+    public InputStream inputStream() throws IOException {
+        if (file != null) {
+            return new FileInputStream(file);
+        } else {
+            return contentResolver.openInputStream(uriOpenableByContentResolvers);
+        }
+    }
+
+    public OutputStream outputStream() throws IOException {
+        if (file != null) {
+            File parent = file.getParentFile();
+            if (!parent.mkdirs() && !parent.isDirectory()) {
+                throw new IOException("Could not create parent directory");
+            }
+
+            if (file.isDirectory()) {
+                throw new IOException("Destination not a file");
+            }
+
+            return new FileOutputStream(file);
+        } else {
+            return contentResolver.openOutputStream(uriOpenableByContentResolvers);
+        }
+    }
+
+    public String name() {
+        return "dummy name";
+    }
+
+    public boolean exists() {
+        // TODO
+        return false;
+    }
+
+    public boolean delete() {
+        // TODO
+        return true;
+    }
+
+    public void copyFrom(File source) throws IOException {
+        InputStream is = null;
+        OutputStream os = null;
+        try {
+            is = new BufferedInputStream(new FileInputStream(source));
+            os = new BufferedOutputStream(outputStream());
+            IOUtils.copy(is, os);
+        } finally {
+            IOUtils.closeQuietly(is);
+            IOUtils.closeQuietly(os);
+        }
+    }
+}

Clover/app/src/main/java/org/floens/chan/core/storage/StorageImpl.java

@@ -0,0 +1,16 @@
+package org.floens.chan.core.storage;
+
+import android.content.Intent;
+import android.net.Uri;
+
+public interface StorageImpl {
+    boolean supportsExternalStorage();
+
+    Intent getOpenTreeIntent();
+
+    void handleOpenTreeIntent(Uri uri);
+
+    StorageFile obtainStorageFileForName(String name);
+
+    String currentStorageName();
+}

Clover/app/src/main/java/org/floens/chan/ui/activity/StartActivity.java

@@ -51,6 +51,7 @@ import org.floens.chan.ui.controller.BrowseController;
 import org.floens.chan.ui.controller.DoubleNavigationController;
 import org.floens.chan.ui.controller.DrawerController;
 import org.floens.chan.ui.controller.SplitNavigationController;
+import org.floens.chan.ui.controller.StorageSetupController;
 import org.floens.chan.ui.controller.StyledToolbarNavigationController;
 import org.floens.chan.ui.controller.ThreadSlideController;
 import org.floens.chan.ui.controller.ViewThreadController;
@@ -164,6 +165,8 @@ public class StartActivity extends AppCompatActivity implements NfcAdapter.Creat
         } else {
             browseController.loadWithDefaultBoard();
         }
+
+        mainNavigationController.pushController(new StorageSetupController(this), false);
     }
 
     private boolean restoreFromUrl() {
@@ -487,6 +490,8 @@ public class StartActivity extends AppCompatActivity implements NfcAdapter.Creat
         super.onActivityResult(requestCode, resultCode, data);
 
         imagePickDelegate.onActivityResult(requestCode, resultCode, data);
+
+        drawerController.onActivityResult(requestCode, resultCode, data);
     }
 
     private Controller stackTop() {

Clover/app/src/main/java/org/floens/chan/ui/controller/AlbumDownloadController.java

@@ -46,6 +46,9 @@ import org.floens.chan.utils.RecyclerUtils;
 import java.util.ArrayList;
 import java.util.List;
 
+import javax.inject.Inject;
+
+import static org.floens.chan.Chan.inject;
 import static org.floens.chan.ui.theme.ThemeHelper.theme;
 import static org.floens.chan.utils.AndroidUtils.dp;
 
@@ -59,6 +62,8 @@ public class AlbumDownloadController extends Controller implements View.OnClickL
 
     private boolean allChecked = true;
     private AlbumAdapter adapter;
+
+    @Inject
     private ImageSaver imageSaver;
 
     public AlbumDownloadController(Context context) {
@@ -69,7 +74,7 @@ public class AlbumDownloadController extends Controller implements View.OnClickL
     public void onCreate() {
         super.onCreate();
 
-        imageSaver = ImageSaver.getInstance();
+        inject(this);
 
         view = inflateRes(R.layout.controller_album_download);
 

Clover/app/src/main/java/org/floens/chan/ui/controller/ImageViewerController.java

@@ -92,6 +92,9 @@ public class ImageViewerController extends Controller implements ImageViewerPres
     @Inject
     ImageLoader imageLoader;
 
+    @Inject
+    ImageSaver imageSaver;
+
     private int statusBarColorPrevious;
     private AnimatorSet startAnimation;
     private AnimatorSet endAnimation;
@@ -226,7 +229,7 @@ public class ImageViewerController extends Controller implements ImageViewerPres
                         File.separator +
                         presenter.getLoadable().boardCode);
             }
-            ImageSaver.getInstance().startDownloadTask(context, task);
+            imageSaver.startDownloadTask(context, task);
         }
     }
 

Clover/app/src/main/java/org/floens/chan/ui/controller/SaveLocationController.java

@@ -18,9 +18,7 @@
 package org.floens.chan.ui.controller;
 
 import android.Manifest;
-import android.app.Activity;
 import android.content.Context;
-import android.content.Intent;
 import android.support.design.widget.FloatingActionButton;
 import android.view.View;
 
@@ -28,7 +26,6 @@ import org.floens.chan.R;
 import org.floens.chan.controller.Controller;
 import org.floens.chan.core.saver.FileWatcher;
 import org.floens.chan.core.settings.ChanSettings;
-import org.floens.chan.core.storage.Storage;
 import org.floens.chan.ui.activity.StartActivity;
 import org.floens.chan.ui.adapter.FilesAdapter;
 import org.floens.chan.ui.helper.RuntimePermissionsHelper;
@@ -77,18 +74,6 @@ public class SaveLocationController extends Controller implements FileWatcher.Fi
         } else {
             requestPermission();
         }
-
-        test();
-    }
-
-    private void test() {
-        Storage storage = Storage.getInstance();
-        Intent intent = storage.requestExternalPermission(context.getApplicationContext());
-        if (intent != null) {
-            if (intent.resolveActivity(context.getPackageManager()) != null) {
-                ((Activity) context).startActivityForResult(intent, 10024);
-            }
-        }
     }
 
     @Override

Clover/app/src/main/java/org/floens/chan/ui/controller/StorageSetupController.java

@@ -0,0 +1,79 @@
+package org.floens.chan.ui.controller;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import org.floens.chan.R;
+import org.floens.chan.controller.Controller;
+import org.floens.chan.core.storage.Storage;
+
+import javax.inject.Inject;
+
+import static org.floens.chan.Chan.inject;
+
+public class StorageSetupController extends Controller implements View.OnClickListener {
+    private static final int OPEN_TREE_INTENT_RESULT_ID = 101;
+
+    private static final String TAG = "StorageSetupController";
+
+    @Inject
+    private Storage storage;
+
+    private TextView text;
+    private Button button;
+
+    public StorageSetupController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+        inject(this);
+
+        // Navigation
+        navigation.setTitle(R.string.storage_setup_screen);
+
+        // View inflation
+        view = inflateRes(R.layout.controller_storage_setup);
+
+        // View binding
+        text = view.findViewById(R.id.text);
+        button = view.findViewById(R.id.button);
+
+        // View setup
+        button.setOnClickListener(this);
+
+        updateName();
+    }
+
+    @Override
+    public void onClick(View v) {
+        if (v == button) {
+            requestTree();
+        }
+    }
+
+    private void requestTree() {
+        Intent i = storage.getOpenTreeIntent();
+        ((Activity) context).startActivityForResult(i, OPEN_TREE_INTENT_RESULT_ID);
+        updateName();
+    }
+
+    private void updateName() {
+        text.setText(storage.currentStorageName());
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (requestCode == OPEN_TREE_INTENT_RESULT_ID && resultCode == Activity.RESULT_OK) {
+            storage.handleOpenTreeIntent(data.getData());
+            updateName();
+        }
+    }
+}

Clover/app/src/main/java/org/floens/chan/utils/ImageDecoder.java

@@ -25,6 +25,7 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.io.InputStream;
 
 /**
  * Simple ImageDecoder. Taken from Volley ImageRequest.
@@ -55,26 +56,27 @@ public class ImageDecoder {
         if (!file.exists())
             return null;
 
-        FileInputStream fis;
-
         try {
-            fis = new FileInputStream(file);
+            InputStream fis = new FileInputStream(file);
+            return decodeFile(fis, maxWidth, maxHeight);
         } catch (FileNotFoundException e) {
             e.printStackTrace();
             return null;
         }
+    }
 
+    public static Bitmap decodeFile(InputStream is, int maxWidth, int maxHeight) {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
 
         Bitmap bitmap = null;
 
         try {
-            IOUtils.copy(fis, baos);
+            IOUtils.copy(is, baos);
             bitmap = decode(baos.toByteArray(), maxWidth, maxHeight);
         } catch (IOException | OutOfMemoryError e) {
             e.printStackTrace();
         } finally {
-            IOUtils.closeQuietly(fis);
+            IOUtils.closeQuietly(is);
             IOUtils.closeQuietly(baos);
         }
 

Clover/app/src/main/res/layout/controller_storage_setup.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp">
+
+        <TextView
+            android:id="@+id/text"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <Button
+            android:id="@+id/button"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="open" />
+
+    </LinearLayout>
+
+</ScrollView>

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

@@ -546,6 +546,10 @@ Re-enable this permission in the app settings if you permanently disabled it."
     <string name="setting_folder_navigate_up">Up</string>
 
 
+    <!-- Storage setup settings -->
+    <string name="storage_setup_screen">Setup storage</string>
+
+
     <!-- Theme settings -->
     <string name="setting_theme_explanation">
 "Swipe to change the theme.