Web视图在单击照相机意图屏幕上的是图标后显示小崩溃的图像图标

Question

我正在创建一个应用程序以在Web视图中加载URL。我创建了“图像选择器”以开始从画廊和相机中选择照片的活动。

A）从图库中选择图像工作正常。B）当我通过摄像机捕获图像时，它在Web视图中显示崩溃的小图像图标。

注意：在拍摄图像后，当我在“相机”屏幕上停留5-8秒以上时，相机照片在网络视图上完美显示。但是，即使在捕获图像后迅速按“是”按钮也应该可以。

这是我的Web视图代码，用于设置WebChromeClient

        webView.setWebChromeClient(new WebChromeClient() {

            @Override
            public boolean onShowFileChooser(
                    WebView webView, ValueCallback<Uri[]> newFilePathCallback,
                    FileChooserParams fileChooserParams) {

                if (filePathCallback != null) {
                    filePathCallback.onReceiveValue(null);
                }
                filePathCallback = newFilePathCallback;

                Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
                    Log.d("Mainn", "onShowFileChooser()");
                    // Create the File where the photo should go
                    File photoFile = null;
                    try {
                        photoFile = createImageFile();
                    } catch (IOException e) {
                        Log.d("Mainn", "onShowFileChooser().. e : " + e.getLocalizedMessage());
                        e.printStackTrace();
                    }

                    Log.d("Mainn", "onShowFileChooser() 4");
                    // Continue only if the File was successfully created
                    if (photoFile != null) {
                        Log.d("Mainn", "onShowFileChooser() 5");
                        cameraPhotoPath = "file:" + photoFile.getAbsolutePath();
                        takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                                Uri.fromFile(photoFile));
                    } else {
                        Log.d("Mainn", "onShowFileChooser() 6");
                        takePictureIntent = null;
                    }
                }
                Log.d("Mainn", "onShowFileChooser() 7");
                Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
                contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
                contentSelectionIntent.setType("image/*");

                Intent[] intentArray;
                if (takePictureIntent != null) {
                    Log.d("Mainn", "onShowFileChooser() 8");
                    intentArray = new Intent[]{takePictureIntent};
                } else {
                    Log.d("Mainn", "onShowFileChooser() 9");
                    intentArray = new Intent[0];
                }

                Log.d("Mainn", "onShowFileChooser() 10");
                Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
                chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
                chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
                chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);

                startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE);

                return true;
            }
        });
    }

onActivityResult（）代码在这里

    @Override
    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
        if (requestCode != INPUT_FILE_REQUEST_CODE || filePathCallback == null) {
            super.onActivityResult(requestCode, resultCode, data);
            return;
        }

        Uri[] results = null;

        // Check that the response is a good one
        if (resultCode == Activity.RESULT_OK) {
            if (data == null) {
                // If there is not data, then we may have taken a photo
                if (cameraPhotoPath != null) {
                    results = new Uri[]{Uri.parse(cameraPhotoPath)};
                }
            } else {
                String dataString = data.getDataString();
                if (dataString != null) {
                    results = new Uri[]{Uri.parse(dataString)};
                }
            }
        }

        filePathCallback.onReceiveValue(results);
        filePathCallback = null;

    }

Answer 1

使用FileProvider代替Uri.fromFile（）。它将解决此问题。

Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

Uri uri = FileProvider.getUriForFile(getActivity(), getActivity().getPackageName(), photoFile);
takePictureIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
takePictureIntent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);

takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);