Fixed download for API 29+ and minor refactor on older file saveing

Author: Pelkar

widgetssdk/src/main/java/com/glia/widgets/chat/ChatView.kt

@@ -8,6 +8,7 @@ import android.content.Intent
 import android.content.pm.PackageManager
 import android.content.res.TypedArray
 import android.net.Uri
+import android.os.Build
 import android.provider.MediaStore
 import android.provider.Settings
 import android.text.Editable
@@ -877,7 +878,7 @@ internal class ChatView(context: Context, attrs: AttributeSet?, defStyleAttr: In
     }
 
     override fun onFileDownloadClick(file: AttachmentFile) {
-        if (ContextCompat.checkSelfPermission(
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S || ContextCompat.checkSelfPermission(
                 context, Manifest.permission.WRITE_EXTERNAL_STORAGE
             ) == PackageManager.PERMISSION_GRANTED
         ) {

widgetssdk/src/main/java/com/glia/widgets/filepreview/data/source/local/DownloadsFolderDataSource.java

@@ -171,30 +171,18 @@ private Completable downloadFileToDownloadsAPI29(String fileName, String content
 
     private Completable downloadFileToDownloadsOld(String fileName, InputStream inputStream) {
         return Completable.create(emitter -> {
-            OutputStream fos = null;
-            try {
-                String imagesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).toString();
-                File file = new File(imagesDir, fileName);
-                fos = new FileOutputStream(file);
+            String imagesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).toString();
+            File file = new File(imagesDir, fileName);
+            try (OutputStream fos = new FileOutputStream(file)) {
                 byte[] buffer = new byte[10 * 1024]; // or other buffer size
                 int read;
                 while ((read = inputStream.read(buffer)) != -1) {
                     fos.write(buffer, 0, read);
                 }
-                fos.flush();
                 emitter.onComplete();
             } catch (FileNotFoundException ex) {
                 Logger.e(TAG, "File saving to downloads folder failed: " + ex.getMessage());
                 emitter.onError(ex);
-            } finally {
-                if (fos != null) {
-                    try {
-                        fos.flush();
-                        fos.close();
-                    } catch (IOException e) {
-                        Logger.e(TAG, e.getMessage());
-                    }
-                }
             }
             emitter.onComplete();
         });