Fix text/plain mime

- unification class TransferFile
- MediaStore Android 11 Q download support

app/src/main/java/com/localtransfer/MainActivity.java

@@ -227,7 +227,7 @@ public class MainActivity extends AppCompatActivity {
 
     public static final int REQUEST_ID_READ_EXTERNAL_STORAGE = 2001;
 
-    private  boolean checkAndRequestPermissions() {
+    private boolean checkAndRequestPermissions() {
 
         if (ContextCompat.checkSelfPermission(
                 this, Manifest.permission.READ_EXTERNAL_STORAGE) ==

app/src/main/java/com/localtransfer/SettingsActivity.java

@@ -1,8 +1,10 @@
 package com.localtransfer;
 
+import android.Manifest;
 import android.app.Activity;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.os.Environment;
 import android.util.Log;
@@ -10,6 +12,8 @@ import android.view.MenuItem;
 
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceFragmentCompat;
 import androidx.preference.PreferenceManager;
@@ -49,14 +53,22 @@ public class SettingsActivity extends AppCompatActivity {
 
             SwitchPreference shared;
             shared = findPreference("use_shared_storage");
-            if(shared.isChecked())
-                directory.setVisible(true);
+            if(shared.isChecked()) {
+                if(checkAndRequestPermissions())
+                    directory.setVisible(true);
+                else
+                    shared.setChecked(false);
+            }
             else
                 directory.setVisible(false);
 
             shared.setOnPreferenceClickListener(preference -> {
-                if(shared.isChecked())
-                    directory.setVisible(true);
+                if(shared.isChecked()) {
+                    if(checkAndRequestPermissions())
+                        directory.setVisible(true);
+                    else
+                        shared.setChecked(false);
+                }
                 else
                     directory.setVisible(false);
                 return false;
@@ -71,6 +83,35 @@ public class SettingsActivity extends AppCompatActivity {
             });
         }
 
+        private boolean checkAndRequestPermissions() {
+
+            if (ContextCompat.checkSelfPermission(
+                    getActivity(), Manifest.permission.READ_EXTERNAL_STORAGE) ==
+                    PackageManager.PERMISSION_GRANTED) {
+                Log.d("READ_EXTERNAL_STORAGE", "already granted");
+                return true;
+            }
+            else {
+                ActivityCompat.requestPermissions(getActivity(), new String[] {android.Manifest.permission.READ_EXTERNAL_STORAGE}, MainActivity.REQUEST_ID_READ_EXTERNAL_STORAGE);
+            }
+            return false;
+        }
+        @Override
+        public void onRequestPermissionsResult(int requestCode,
+                                               String permissions[],
+                                               int[] grantResults) {
+            switch (requestCode) {
+                case MainActivity.REQUEST_ID_READ_EXTERNAL_STORAGE:
+                    if (grantResults.length > 0 &&
+                            grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                        Log.d("READ_EXTERNAL_STORAGE", "granted");
+                    }  else {
+                        Log.d("READ_EXTERNAL_STORAGE", "No granted");
+                    }
+                    return;
+            }
+        }
+
         @Override
         public void onActivityResult(int requestCode, int resultCode, Intent data) {
             super.onActivityResult(requestCode, resultCode, data);

app/src/main/java/com/localtransfer/UploadFile.java

@@ -28,6 +28,8 @@ public class UploadFile extends Transfer {
 
     public Uri uri;
 
+    public String type;
+
     public UploadFile() {
         this.id = View.generateViewId();
         instances.add(this);
@@ -44,9 +46,19 @@ public class UploadFile extends Transfer {
             Cursor cursor = activity.getContentResolver().query(uri, null, null, null, null);
             cursor.moveToFirst();
 
-            file.name = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
-            file.size = cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
-            file.sizeSI = Transfer.humanReadableByteCountBin(file.size);
+            file.type = activity.getContentResolver().getType(uri);
+
+            int col_name = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME);
+            if (col_name != -1)
+                file.name = cursor.getString(col_name);
+            if(file.name == null)
+                file.name = file.type.split("/")[0] + "_" + new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()) + "." + file.type.split("/")[1];
+
+            int col_size = cursor.getColumnIndex(OpenableColumns.SIZE);
+            if (col_name != -1) {
+                file.size = cursor.getLong(col_size);
+                file.sizeSI = Transfer.humanReadableByteCountBin(file.size);
+            }
 
             file.AddTransfer();
         }
@@ -116,15 +128,7 @@ public class UploadFile extends Transfer {
         Cursor cursor = activity.getContentResolver().query(uri, null, null, null, null);
         cursor.moveToFirst();
 
-        String type = activity.getContentResolver().getType(uri);
-
-        String fileName = null;
-        int col_name = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME);
-        if (col_name != -1)
-            fileName = cursor.getString(col_name);
-        if(fileName == null)
-            fileName = type.split("/")[0] + "_" + new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()) + "." + type.split("/")[1];
-        String fileNameUTF8 = new String(fileName.getBytes(), StandardCharsets.ISO_8859_1);
+        String fileNameUTF8 = new String(name.getBytes(), StandardCharsets.ISO_8859_1);
 
         url = new URL(protocol, host, port, root + "/upload.php");
 
@@ -152,6 +156,7 @@ public class UploadFile extends Transfer {
         InputStream in = activity.getContentResolver().openInputStream(uri);
 
         size = in.available();
+        sizeSI = Transfer.humanReadableByteCountBin(size);
 
         while ((bufferLength = in.read(buffer)) > 0) {
             request.write(buffer, 0, bufferLength);
@@ -168,7 +173,7 @@ public class UploadFile extends Transfer {
         int responseCode = conn.getResponseCode();
 
         if (responseCode == HttpURLConnection.HTTP_OK) {
-            message = "File " + fileName + " successful upload";
+            message = "File " + name + " successful upload";
             state = Transfer.STATE_SUCCESS;
             progressEnd();
         }

app/src/main/java/com/localtransfer/fragment/DownloadFragment.java

@@ -300,7 +300,7 @@ public class DownloadFragment extends Fragment {
 
         DownloadFile dl = (DownloadFile) DownloadFile.getFileById(id);
 
-        if(dl.type.equals("text/plain")) {
+        if(dl.mime.equals("text/plain")) {
             String text = null;
             try {
                 InputStream is = getActivity().getContentResolver().openInputStream(dl.uri);
@@ -321,7 +321,7 @@ public class DownloadFragment extends Fragment {
 
             try {
                 Intent intent = new Intent(Intent.ACTION_SEND);
-                intent.setType(dl.type);
+                intent.setType(dl.mime);
                 intent.putExtra(Intent.EXTRA_TEXT, text);
                 startActivity(Intent.createChooser(intent, getString(R.string.share_title)));
             } catch (ActivityNotFoundException e) {