Question

我有一个带文件选择器的webview，可以在Samsung Galaxy Tab 2(Android 4.1.1), Lenovo, Nexus Tablets中使用。但问题是它不是在Samsung galaxy Tab 3中徘徊。哪个是Android 4.4 tablet。我在这里添加了setWebChromeClient代码。你能帮助别人吗？

// implement WebChromeClient inner class
        // we will define openFileChooser for select file from camera
        webView.setWebChromeClient(new WebChromeClient() {

            // openFileChooser for Android 3.0+
            public void openFileChooser(ValueCallback<Uri> uploadMsg,
                    String acceptType) {
                /** updated, out of the IF **/
                mUploadMessage = uploadMsg;
                /** updated, out of the IF **/
                Log.e("Reac", "**Here");
                try {
                    File imageStorageDir = new File(base_directory,
                            "profile_pictures");
                    if (!imageStorageDir.exists()) {
                        imageStorageDir.mkdirs();
                    }
                    src_file = new File(imageStorageDir + File.separator
                            + "IMG_" + child_id + ".jpg");
                    mCapturedImageURI = Uri.fromFile(src_file); // save to the
                                                                // private
                                                                // variable

                    final Intent captureIntent = new Intent(
                            android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                    captureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                            mCapturedImageURI);

                    startActivityForResult(captureIntent,
                            FILECHOOSER_RESULTCODE);
                } catch (Exception e) {
                    Toast.makeText(getBaseContext(), "Camera Exception:" + e,
                            Toast.LENGTH_LONG).show();
                }
            }



            // openFileChooser for Android < 3.0
            public void openFileChooser(ValueCallback<Uri> uploadMsg) {
                openFileChooser(uploadMsg, "");
            }

            // openFileChooser for other Android versions
            public void openFileChooser(ValueCallback<Uri> uploadMsg,
                    String acceptType, String capture) {
                openFileChooser(uploadMsg, acceptType);
            }

            /** Added code to clarify chooser. **/

            // The webPage has 2 filechoosers and will send a console message
            // informing what action to perform, taking a photo or updating the
            // file
            public boolean onConsoleMessage(ConsoleMessage cm) {
                onConsoleMessage(cm.message(), cm.lineNumber(), cm.sourceId());
                return true;
            }

            public void onConsoleMessage(String message, int lineNumber,
                    String sourceID) {
                // Log.d("androidruntime", "Per cÔøΩnsola: " + message);
            }
            /** Added code to clarify chooser. **/

        });

我只添加了一段代码。请问我是否需要任何细节。

Answer 1

Android 4.4中似乎有known bug使<input type="file">无法在WebView中运行。

不幸的是openFileChooser不是公共API，也没有公众支持。在Android中，Lollipop为此目的引入了API onShowFileChooser。

我的建议是使用JavaScript native WebView interface解决问题，并定义由应用的原生部分处理的自定义openFileChooser API。

文件选择器不适用于三星Tab 3 Android 4.4

1 个答案: