fix(android): Fix several Android file upload issues (#1302 by @hojason117)

[skip ci]

android/src/main/java/com/reactnativecommunity/webview/RNCWebViewManager.java

     public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
       String[] acceptTypes = fileChooserParams.getAcceptTypes();
       boolean allowMultiple = fileChooserParams.getMode() == WebChromeClient.FileChooserParams.MODE_OPEN_MULTIPLE;
-      Intent intent = fileChooserParams.createIntent();
-      return getModule(mReactContext).startPhotoPickerIntent(filePathCallback, intent, acceptTypes, allowMultiple);
+      return getModule(mReactContext).startPhotoPickerIntent(filePathCallback, acceptTypes, allowMultiple);
     }
 
     @Override

android/src/main/java/com/reactnativecommunity/webview/RNCWebViewModule.java

 import android.os.Environment;
 import android.os.Parcelable;
 import android.provider.MediaStore;
+
 import androidx.annotation.RequiresApi;
 import androidx.core.content.ContextCompat;
 import androidx.core.content.FileProvider;
+
 import android.util.Log;
 import android.webkit.MimeTypeMap;
 import android.webkit.ValueCallback;
   private static final int PICKER = 1;
   private static final int PICKER_LEGACY = 3;
   private static final int FILE_DOWNLOAD_PERMISSION_REQUEST = 1;
-  final String DEFAULT_MIME_TYPES = "*/*";
   private ValueCallback<Uri> filePathCallbackLegacy;
   private ValueCallback<Uri[]> filePathCallback;
-  private Uri outputFileUri;
+  private File outputImage;
+  private File outputVideo;
   private DownloadManager.Request downloadRequest;
+
+  private enum MimeType {
+    DEFAULT("*/*"),
+    IMAGE("image"),
+    VIDEO("video");
+
+    private final String value;
+
+    MimeType(String value) {
+      this.value = value;
+    }
+  }
+
   private PermissionListener webviewFileDownloaderPermissionListener = new PermissionListener() {
     @Override
     public boolean onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
       return;
     }
 
+    boolean imageTaken = false;
+    boolean videoTaken = false;
+
+    if (outputImage != null && outputImage.length() > 0) {
+      imageTaken = true;
+    }
+    if (outputVideo != null && outputVideo.length() > 0) {
+      videoTaken = true;
+    }
+
     // based off of which button was pressed, we get an activity result and a file
     // the camera activity doesn't properly return the filename* (I think?) so we use
     // this filename instead
             filePathCallback.onReceiveValue(null);
           }
         } else {
-          Uri result[] = this.getSelectedFiles(data, resultCode);
-          if (result != null) {
-            filePathCallback.onReceiveValue(result);
+          if (imageTaken) {
+            filePathCallback.onReceiveValue(new Uri[]{getOutputUri(outputImage)});
+          } else if (videoTaken) {
+            filePathCallback.onReceiveValue(new Uri[]{getOutputUri(outputVideo)});
           } else {
-            filePathCallback.onReceiveValue(new Uri[]{outputFileUri});
+            filePathCallback.onReceiveValue(this.getSelectedFiles(data, resultCode));
           }
         }
         break;
       case PICKER_LEGACY:
-        Uri result = resultCode != Activity.RESULT_OK ? null : data == null ? outputFileUri : data.getData();
-        filePathCallbackLegacy.onReceiveValue(result);
+        if (resultCode != RESULT_OK) {
+          filePathCallbackLegacy.onReceiveValue(null);
+        } else {
+          if (imageTaken) {
+            filePathCallbackLegacy.onReceiveValue(getOutputUri(outputImage));
+          } else if (videoTaken) {
+            filePathCallbackLegacy.onReceiveValue(getOutputUri(outputVideo));
+          } else {
+            filePathCallbackLegacy.onReceiveValue(data.getData());
+          }
+        }
         break;
 
     }
+
+    if (outputImage != null && !imageTaken) {
+      outputImage.delete();
+    }
+    if (outputVideo != null && !videoTaken) {
+      outputVideo.delete();
+    }
+
     filePathCallback = null;
     filePathCallbackLegacy = null;
-    outputFileUri = null;
+    outputImage = null;
+    outputVideo = null;
   }
 
   public void onNewIntent(Intent intent) {
       return null;
     }
 
-    // we have one file selected
-    if (data.getData() != null) {
-      if (resultCode == RESULT_OK && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-        return WebChromeClient.FileChooserParams.parseResult(resultCode, data);
-      } else {
-        return null;
-      }
-    }
-
     // we have multiple files selected
     if (data.getClipData() != null) {
       final int numSelectedFiles = data.getClipData().getItemCount();
       }
       return result;
     }
+
+    // we have one file selected
+    if (data.getData() != null && resultCode == RESULT_OK && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+      return WebChromeClient.FileChooserParams.parseResult(resultCode, data);
+    }
+
     return null;
   }
 
 
     ArrayList<Parcelable> extraIntents = new ArrayList<>();
     if (acceptsImages(acceptType)) {
-      extraIntents.add(getPhotoIntent());
+      Intent photoIntent = getPhotoIntent();
+      if (photoIntent != null) {
+        extraIntents.add(photoIntent);
+      }
     }
     if (acceptsVideo(acceptType)) {
-      extraIntents.add(getVideoIntent());
+      Intent videoIntent = getVideoIntent();
+      if (videoIntent != null) {
+        extraIntents.add(videoIntent);
+      }
     }
     chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, extraIntents.toArray(new Parcelable[]{}));
 
   }
 
   @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
-  public boolean startPhotoPickerIntent(final ValueCallback<Uri[]> callback, final Intent intent, final String[] acceptTypes, final boolean allowMultiple) {
+  public boolean startPhotoPickerIntent(final ValueCallback<Uri[]> callback, final String[] acceptTypes, final boolean allowMultiple) {
     filePathCallback = callback;
 
     ArrayList<Parcelable> extraIntents = new ArrayList<>();
-    if (! needsCameraPermission()) {
+    if (!needsCameraPermission()) {
       if (acceptsImages(acceptTypes)) {
-        extraIntents.add(getPhotoIntent());
+        Intent photoIntent = getPhotoIntent();
+        if (photoIntent != null) {
+          extraIntents.add(photoIntent);
+        }
       }
       if (acceptsVideo(acceptTypes)) {
-        extraIntents.add(getVideoIntent());
+        Intent videoIntent = getVideoIntent();
+        if (videoIntent != null) {
+          extraIntents.add(videoIntent);
+        }
       }
     }
 
   }
 
   private Intent getPhotoIntent() {
-    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
-    outputFileUri = getOutputUri(MediaStore.ACTION_IMAGE_CAPTURE);
-    intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
+    Intent intent = null;
+
+    try {
+      outputImage = getCapturedFile(MimeType.IMAGE);
+      Uri outputImageUri = getOutputUri(outputImage);
+      intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
+      intent.putExtra(MediaStore.EXTRA_OUTPUT, outputImageUri);
+    } catch (IOException | IllegalArgumentException e) {
+      Log.e("CREATE FILE", "Error occurred while creating the File", e);
+      e.printStackTrace();
+    }
+
     return intent;
   }
 
   private Intent getVideoIntent() {
-    Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
-    outputFileUri = getOutputUri(MediaStore.ACTION_VIDEO_CAPTURE);
-    intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
+    Intent intent = null;
+
+    try {
+      outputVideo = getCapturedFile(MimeType.VIDEO);
+      Uri outputVideoUri = getOutputUri(outputVideo);
+      intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
+      intent.putExtra(MediaStore.EXTRA_OUTPUT, outputVideoUri);
+    } catch (IOException | IllegalArgumentException e) {
+      Log.e("CREATE FILE", "Error occurred while creating the File", e);
+      e.printStackTrace();
+    }
+    
     return intent;
   }
 
   private Intent getFileChooserIntent(String acceptTypes) {
     String _acceptTypes = acceptTypes;
     if (acceptTypes.isEmpty()) {
-      _acceptTypes = DEFAULT_MIME_TYPES;
+      _acceptTypes = MimeType.DEFAULT.value;
     }
     if (acceptTypes.matches("\\.\\w+")) {
       _acceptTypes = getMimeTypeFromExtension(acceptTypes.replace(".", ""));
   private Intent getFileChooserIntent(String[] acceptTypes, boolean allowMultiple) {
     Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
     intent.addCategory(Intent.CATEGORY_OPENABLE);
-    intent.setType("*/*");
+    intent.setType(MimeType.DEFAULT.value);
     intent.putExtra(Intent.EXTRA_MIME_TYPES, getAcceptedMimeType(acceptTypes));
     intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, allowMultiple);
     return intent;
     if (types.matches("\\.\\w+")) {
       mimeType = getMimeTypeFromExtension(types.replace(".", ""));
     }
-    return mimeType.isEmpty() || mimeType.toLowerCase().contains("image");
+    return mimeType.isEmpty() || mimeType.toLowerCase().contains(MimeType.IMAGE.value);
   }
 
   private Boolean acceptsImages(String[] types) {
     String[] mimeTypes = getAcceptedMimeType(types);
-    return isArrayEmpty(mimeTypes) || arrayContainsString(mimeTypes, "image");
+    return arrayContainsString(mimeTypes, MimeType.DEFAULT.value) || arrayContainsString(mimeTypes, MimeType.IMAGE.value);
   }
 
   private Boolean acceptsVideo(String types) {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+      return false;
+    }
+
     String mimeType = types;
     if (types.matches("\\.\\w+")) {
       mimeType = getMimeTypeFromExtension(types.replace(".", ""));
     }
-    return mimeType.isEmpty() || mimeType.toLowerCase().contains("video");
+    return mimeType.isEmpty() || mimeType.toLowerCase().contains(MimeType.VIDEO.value);
   }
 
   private Boolean acceptsVideo(String[] types) {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+      return false;
+    }
+
     String[] mimeTypes = getAcceptedMimeType(types);
-    return isArrayEmpty(mimeTypes) || arrayContainsString(mimeTypes, "video");
+    return arrayContainsString(mimeTypes, MimeType.DEFAULT.value) || arrayContainsString(mimeTypes, MimeType.VIDEO.value);
   }
 
   private Boolean arrayContainsString(String[] array, String pattern) {
   }
 
   private String[] getAcceptedMimeType(String[] types) {
-    if (isArrayEmpty(types)) {
-      return new String[]{DEFAULT_MIME_TYPES};
+    if (noAcceptTypesSet(types)) {
+      return new String[]{MimeType.DEFAULT.value};
     }
     String[] mimeTypes = new String[types.length];
     for (int i = 0; i < types.length; i++) {
     return type;
   }
 
-  private Uri getOutputUri(String intentType) {
-    File capturedFile = null;
-    try {
-      capturedFile = getCapturedFile(intentType);
-    } catch (IOException e) {
-      Log.e("CREATE FILE", "Error occurred while creating the File", e);
-      e.printStackTrace();
-    }
-
+  private Uri getOutputUri(File capturedFile) {
     // for versions below 6.0 (23) we use the old File creation & permissions model
     if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
       return Uri.fromFile(capturedFile);
     return FileProvider.getUriForFile(getReactApplicationContext(), packageName + ".fileprovider", capturedFile);
   }
 
-  private File getCapturedFile(String intentType) throws IOException {
+  private File getCapturedFile(MimeType mimeType) throws IOException {
     String prefix = "";
     String suffix = "";
     String dir = "";
-    String filename = "";
 
-    if (intentType.equals(MediaStore.ACTION_IMAGE_CAPTURE)) {
-      prefix = "image-";
-      suffix = ".jpg";
-      dir = Environment.DIRECTORY_PICTURES;
-    } else if (intentType.equals(MediaStore.ACTION_VIDEO_CAPTURE)) {
-      prefix = "video-";
-      suffix = ".mp4";
-      dir = Environment.DIRECTORY_MOVIES;
+    switch (mimeType) {
+      case IMAGE:
+        prefix = "image-";
+        suffix = ".jpg";
+        dir = Environment.DIRECTORY_PICTURES;
+        break;
+      case VIDEO:
+        prefix = "video-";
+        suffix = ".mp4";
+        dir = Environment.DIRECTORY_MOVIES;
+        break;
+
+      default:
+        break;
     }
 
-    filename = prefix + String.valueOf(System.currentTimeMillis()) + suffix;
+    String filename = prefix + String.valueOf(System.currentTimeMillis()) + suffix;
+    File outputFile = null;
 
     // for versions below 6.0 (23) we use the old File creation & permissions model
     if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
       // only this Directory works on all tested Android versions
       // ctx.getExternalFilesDir(dir) was failing on Android 5.0 (sdk 21)
       File storageDir = Environment.getExternalStoragePublicDirectory(dir);
-      return new File(storageDir, filename);
+      outputFile = new File(storageDir, filename);
+    } else {
+      File storageDir = getReactApplicationContext().getExternalFilesDir(null);
+      outputFile = File.createTempFile(prefix, suffix, storageDir);
     }
 
-    File storageDir = getReactApplicationContext().getExternalFilesDir(null);
-    return File.createTempFile(filename, suffix, storageDir);
+    return outputFile;
   }
 
-  private Boolean isArrayEmpty(String[] arr) {
+  private Boolean noAcceptTypesSet(String[] types) {
     // when our array returned from getAcceptTypes() has no values set from the webview
     // i.e. <input type="file" />, without any "accept" attr
     // will be an array with one empty string element, afaik
-    return arr.length == 0 || (arr.length == 1 && arr[0] != null && arr[0].length() == 0);
+
+    return types.length == 0 || (types.length == 1 && types[0] != null && types[0].length() == 0);
   }
 
   private PermissionAwareActivity getPermissionAwareActivity() {