webview 选择文件

来源：互联网发布：bp神经网络数据归一化编辑：程序博客网时间：2024/06/18 14:11

网页上的button定义 <input tyoe="file" />

方法一，也是网上能搜到最多的解决方案
参考网址：http://stackoverflow.com/questions/4944102/android-webview-file-input-field-filechooser-doesnt-show-up
http://m0s-programming.blogspot.tw/2011/02/file-upload-in-through-webview-on.html

       @Override      protected void onActivityResult(int requestCode, int resultCode, Intent data) {            if(requestCode==FILECHOOSER_RESULTCODE) {                 if (null == mUploadMessage) return;                          Uri result = data == null || resultCode != RESULT_OK ? null                                  : data.getData();                          mUploadMessage.onReceiveValue(result);                          mUploadMessage = null;                                          }          ｝

在WebChromeClient的设定中加入如下代码：

        setting.setWebChromeClient(new WebChromeClient() {             // For Android 3.0+         public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {                  if (mUploadMessage != null) return;                mUploadMessage = uploadMsg;                   Intent i = new Intent(Intent.ACTION_GET_CONTENT);                i.addCategory(Intent.CATEGORY_OPENABLE);                i.setType("*/*");                    startActivityForResult( Intent.createChooser( i, "File Chooser" ), BrowserActivity.FILECHOOSER_RESULTCODE );                 }             // For Android < 3.0         public void openFileChooser(ValueCallback<Uri> uploadMsg) {                openFileChooser( uploadMsg, "" );         }           });         // For Android  > 4.1.1       public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {               openFileChooser(uploadMsg, acceptType);       }

          openFileChooser为隐藏方法。
           这样可以实现打开目录上传文件。不过在3.0以后的版本中，如果同样的网页在android自带的浏览器打开会发现，
           还有照相，录音的功能，然后直接将生成的图片或音频文件上传，这样就要使用下面的方法。
方法二，参考自com.android.browser的源码程式。

   @Override       protected void onActivityResult(int requestCode, int resultCode, Intent data) {            if(requestCode==FILECHOOSER_RESULTCODE) {                 if (null == mUploadMessage) return;                          Uri result = data == null || resultCode != RESULT_OK ? null                                  : data.getData();                            if (result == null && data == null && resultCode == Activity.RESULT_OK) {                            File cameraFile = new File(mCameraFilePath);                            if (cameraFile.exists()) {                                result = Uri.fromFile(cameraFile);                                // Broadcast to the media scanner that we have a new photo                                // so it will be added into the gallery for the user.                                sendBroadcast(                                        new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, result));                                    }                             }                        mUploadMessage.onReceiveValue(result);                          mUploadMessage = null;              }          ｝

在WebChromeClient的设定中加入如下代码：

setting.setWebChromeClient(new WebChromeClient() {             // For Android 3.0+         public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {                  if (mUploadMessage != null) return;                mUploadMessage = uploadMsg;                startActivityForResult(createDefaultOpenableIntent(),                        BrowserActivity.FILECHOOSER_RESULTCODE);            }                 }             // For Android < 3.0         public void openFileChooser(ValueCallback<Uri> uploadMsg) {                openFileChooser( uploadMsg, "" );         }  });

private Intent createDefaultOpenableIntent() {           // Create and return a chooser with the default OPENABLE           // actions including the camera, camcorder and sound           // recorder where available.             Intent i = new Intent(Intent.ACTION_GET_CONTENT);             i.addCategory(Intent.CATEGORY_OPENABLE);             i.setType("*/*");             Intent chooser = createChooserIntent(createCameraIntent(), createCamcorderIntent(),                    createSoundRecorderIntent());            chooser.putExtra(Intent.EXTRA_INTENT, i);            return chooser;        }                private Intent createChooserIntent(Intent... intents) {            Intent chooser = new Intent(Intent.ACTION_CHOOSER);            chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, intents);            chooser.putExtra(Intent.EXTRA_TITLE, "File Chooser");           return chooser;          }    private Intent createCameraIntent() {          Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);          File externalDataDir = Environment.getExternalStoragePublicDirectory(                    Environment.DIRECTORY_DCIM);          File cameraDataDir = new File(externalDataDir.getAbsolutePath() +                    File.separator + "browser-photos");          cameraDataDir.mkdirs();          String mCameraFilePath = cameraDataDir.getAbsolutePath() + File.separator +                    System.currentTimeMillis() + ".jpg";          cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(mCameraFilePath)));          return cameraIntent;        }    private Intent createCamcorderIntent() {         return new Intent(MediaStore.ACTION_VIDEO_CAPTURE);        }    private Intent createSoundRecorderIntent() {         return new Intent(MediaStore.Audio.Media.RECORD_SOUND_ACTION);        }

0 0