WebView 选择相册图片踩坑

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wv_main.setWebChromeClient(new WebChromeClient() {

            //   Andorid 4.1----4.4

            public void openFileChooser(ValueCallback<uri> uploadFile, String   acceptType, String capture) {

                mFilePathCallback   = uploadFile;

                handle(uploadFile);

            }

            //   for 5.0+

            @Override

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

                if (mFilePathCallbackArray != null) {

                    mFilePathCallbackArray.onReceiveValue(null);

                }

                mFilePathCallbackArray   = filePathCallback;

                handleup(filePathCallback);

                return true;

            }

        });

    }

    private void handle(ValueCallback<uri> uploadFile) {

        Intent   intent = new Intent(Intent.ACTION_PICK);

        intent.setType("image/*");

        startActivityForResult(intent,   PICK_REQUEST);

    }

    private void handleup(ValueCallback<uri[]> uploadFile) {

        Intent   intent = new Intent(Intent.ACTION_PICK);

        intent.setType("image/*");

        startActivityForResult(intent,   PICK_REQUEST);

    }

</uri[]></uri></uri[]></uri>

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@Override

   protected void onActivityResult(int requestCode, int resultCode, Intent data) {

       super.onActivityResult(requestCode,   resultCode, data);

       if (requestCode == PICK_REQUEST) {

           if (null != data) {

               Uri   uri = data.getData();

               handleCallback(uri);

           }   else {

               //   取消了照片选取的时候调用

               handleCallback(null);

           }

       }   else {

           //   取消了照片选取的时候调用

           handleCallback(null);

       }

   }

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/**

     * 处理WebView的回调

     *

     * @param   uri

     */

    private void handleCallback(Uri uri) {

        if (Build.VERSION.SDK_INT >=   Build.VERSION_CODES.LOLLIPOP) {

            if (mFilePathCallbackArray != null) {

                if (uri != null) {

                    mFilePathCallbackArray.onReceiveValue(new Uri[]{uri});

                }   else {

                    mFilePathCallbackArray.onReceiveValue(null);

                }

                mFilePathCallbackArray   = null;

            }

        }   else {

            if (mFilePathCallback != null) {

                if (uri != null) {

                    String   url = getFilePathFromContentUri(uri, getContentResolver());

                    Uri   u = Uri.fromFile(new File(url));

                    mFilePathCallback.onReceiveValue(u);

                }   else {

                    mFilePathCallback.onReceiveValue(null);

                }

                mFilePathCallback   = null;

            }

        }

    }

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4.1-4.4

 mFilePathCallback.onReceiveValue(null);

5.0

mFilePathCallbackArray.onReceiveValue(null);

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public static String   getFilePathFromContentUri(Uri selectedVideoUri,

                                                   ContentResolver   contentResolver) {

        String   filePath;

        String[]   filePathColumn = {MediaStore.MediaColumns.DATA};

        Cursor   cursor = contentResolver.query(selectedVideoUri, filePathColumn, null, null, null);

//      也可用下面的方法拿到cursor

//      Cursor   cursor = this.context.managedQuery(selectedVideoUri, filePathColumn, null,   null, null);

        cursor.moveToFirst();

        int columnIndex =   cursor.getColumnIndex(filePathColumn[0]);

        filePath   = cursor.getString(columnIndex);

        cursor.close();

        return filePath;

    }