OpenFileChooser 以外的任何选项

Question

我正在使用 OpenFileChooser，它正在 Android 4.2.2(Jelly Bean) 上工作，但没有在 Android Lollipop (5.0) 上工作 version.So 有什么选择吗这个东西支持从4.0到新版本。

我正在使用这个教程

http://androidexample.com/Open_File_Chooser_With_Camera_Option_In_Webview_File_Option/index.php?view=article_discription&aid=128&aaid=148

并且已提交关于此的问题

问题 62220：单击 android 4.4 webview

时未调用 openFileChooser

我正在使用 webview，我在其中调用了包含文件 chooser/Image 选择器的网页。

Answer 1

如 Issue 62220: openFileChooser not called when is clicked on android 4.4 webview 中所述：

openFileChooser is not a public API.

从 API 21 (Android 5.0 Lollipop) 开始，您应该使用 onShowFileChooser.

对于 API 19 (4.4)，您可以通过使用 @JavascriptInterface 并可能注入脚本以使用自定义 DOM+[= 替换 <input type="file"> 元素来解决它28=]。参见：https://codemumbai.wordpress.com/android-webview-image-upload-solved/

Answer 2

在 onCreate 之前添加：

private WebView mWebView;
private ProgressBar mProgressBar;

//new block
private static final String TAG = MainActivity.class.getSimpleName();
public static final int INPUT_FILE_REQUEST_CODE = 1;
public static final String EXTRA_FROM_NOTIFICATION = "EXTRA_FROM_NOTIFICATION";
private ValueCallback<Uri[]> mFilePathCallback;
private String mCameraPhotoPath;

// Storage Permissions
private static final int REQUEST_EXTERNAL_STORAGE = 1;
private static String[] PERMISSIONS_STORAGE = {
        Manifest.permission.READ_EXTERNAL_STORAGE,
        Manifest.permission.WRITE_EXTERNAL_STORAGE,
        Manifest.permission.CAMERA
};

添加到 mWebView.setWebChromeClient(new WebChromeClient() { 这个：

public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback,
                    WebChromeClient.FileChooserParams fileChooserParams) {

                //verifyStoragePermissions(MainActivity.this);
                Log.e("111","onShowFileChooser");
                if(mFilePathCallback != null) {
                    mFilePathCallback.onReceiveValue(null);
                }
                mFilePathCallback = filePathCallback;

                Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                if (takePictureIntent.resolveActivity(MainActivity.this.getPackageManager()) != null) {
                    // Create the File where the photo should go
                    File photoFile = null;
                    try {
                        photoFile = createImageFile();
                        takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
                    } catch (IOException ex) {
                        // Error occurred while creating the File
                        Log.e(TAG, "Unable to create Image File", ex);
                    }

                    // Continue only if the File was successfully created
                    if (photoFile != null) {
                        mCameraPhotoPath = "file:" + photoFile.getAbsolutePath();
                        takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                                Uri.fromFile(photoFile));
                    } else {
                        takePictureIntent = null;
                    }
                }

                Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
                contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
                contentSelectionIntent.setType("image/*");

                Intent[] intentArray;
                if(takePictureIntent != null) {
                    intentArray = new Intent[]{takePictureIntent};
                } else {
                    intentArray = new Intent[0];
                }

                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;
            }

并将此添加到 class:

@Override
public void onActivityResult (int requestCode, int resultCode, Intent data) {

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        if (requestCode != INPUT_FILE_REQUEST_CODE || mFilePathCallback == 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 (mCameraPhotoPath != null) {
                    results = new Uri[]{Uri.parse(mCameraPhotoPath)};
                }
            } else {
                String dataString = data.getDataString();
                if (dataString != null) {
                    results = new Uri[]{Uri.parse(dataString)};
                }
            }
        }

        mFilePathCallback.onReceiveValue(results);
        mFilePathCallback = null;
    } else if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
        System.out.println("In KitKat Condition");

        if (requestCode != FILECHOOSER_RESULTCODE || mUploadMessage == null) {
            System.out.println("In != Null");
            super.onActivityResult(requestCode, resultCode, data);
            return;
        }
        if (requestCode == FILECHOOSER_RESULTCODE) {

            System.out.println("requestCode == FileChooser ResultCode");
            if (null == this.mUploadMessage) {
                System.out.println("In null == this.mUploadMessage");
                return;
            }
            Uri result = null;
            try {
                if (resultCode != RESULT_OK) {

                    result = null;
                } else {

                    //newcode

                    // retrieve from the private variable if the intent is null
                    result = data == null ? mCapturedImageURI : data.getData();

                    KitkatPath = Uri.parse("file://"+getPath(MainActivity.this, result));
                    System.out.println("KitkatPath== "+KitkatPath);
                    System.out.println("result = "+result);
                }
            } catch (Exception e) {
                // Toast.makeText(getApplicationContext(), "activity :" + e, Toast.LENGTH_LONG).show();
                e.printStackTrace();
            }
            // mUploadMessage.onReceiveValue(result);
            mUploadMessage.onReceiveValue(KitkatPath);
            System.out.println("mUploadMessage = "+mUploadMessage);
            mUploadMessage = null;
        }
    }

}

最后一件事，添加到清单

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

它应该适用于棒棒糖和棉花糖

OpenFileChooser 以外的任何选项

Any Option other than OpenFileChooser

android

android-afilechooser