相机上传的照片不能在Nexus，Android WebView中工作

Question

我正在使用android webview。我在的Camera动作上传图片时遇到问题。在这里，相机打开，我点击图像，但没有任何反应，图像没有得到上传。但它可以像文档或图库一样正常工作。有很多解决方案和this。但我无法解决我的问题。可以做些什么来解决这个问题？

在我menifest文件，我包括：

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

在我的活动，我包括：

private static final int INPUT_FILE_REQUEST_CODE = 1; 
private static final int FILECHOOSER_RESULTCODE = 1; 
private static final String TAG = MainActivity.class.getSimpleName(); 
private WebView webView; 
private ValueCallback<Uri> mUploadMessage; 
private Uri mCapturedImageURI = null; 
private ValueCallback<Uri[]> mFilePathCallback; 
private String mCameraPhotoPath; 

@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) { 
     if (requestCode != FILECHOOSER_RESULTCODE || mUploadMessage == null) { 
      super.onActivityResult(requestCode, resultCode, data); 
      return; 
     } 

     if (requestCode == FILECHOOSER_RESULTCODE) { 

      if (null == this.mUploadMessage) { 
       return; 

      } 

      Uri result = null; 

      try { 
       if (resultCode != RESULT_OK) { 

        result = null; 

       } else { 

        // retrieve from the private variable if the intent is null 
        result = data == null ? mCapturedImageURI : data.getData(); 
       } 
      } catch (Exception e) { 
       Toast.makeText(getApplicationContext(), "activity :" + e, 
         Toast.LENGTH_LONG).show(); 
      } 

      mUploadMessage.onReceiveValue(result); 
      mUploadMessage = null; 

     } 
    } 

    return; 
} 

对于我WebChromeClient，我包括：

public class MyWebChromeClient extends WebChromeClient{ 
// For Android 5.0 
    public boolean onShowFileChooser(WebView view, ValueCallback<Uri[]> filePath, WebChromeClient.FileChooserParams fileChooserParams) { 
     // Double check that we don't have any existing callbacks 
     if (mFilePathCallback != null) { 
      mFilePathCallback.onReceiveValue(null); 
     } 
     mFilePathCallback = filePath; 

     Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     if (takePictureIntent.resolveActivity(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; 

    } 

    // openFileChooser for Android 3.0+ 
    public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) { 

     mUploadMessage = uploadMsg; 
     // Create AndroidExampleFolder at sdcard 
     // Create AndroidExampleFolder at sdcard 

     File imageStorageDir = new File(
       Environment.getExternalStoragePublicDirectory(
         Environment.DIRECTORY_PICTURES) 
       , "Photo Folder"); 

     if (!imageStorageDir.exists()) { 
      // Create AndroidExampleFolder at sdcard 
      imageStorageDir.mkdirs(); 
     } 

     // Create camera captured image file path and name 
     File file = new File(
       imageStorageDir + File.separator + "IMG_" 
         + String.valueOf(System.currentTimeMillis()) 
         + ".jpg"); 
     Log.d("File", "File: " + file); 
     mCapturedImageURI = Uri.fromFile(file); 

     // Camera capture image intent 
     final Intent captureIntent = new Intent(
       android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 

     captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI); 

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

     // Create file chooser intent 
     Intent chooserIntent = Intent.createChooser(i, "Image Chooser"); 

     // Set camera intent to file chooser 
     chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS 
       , new Parcelable[] { captureIntent }); 

     // On select image call onActivityResult method of activity 
     startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE); 


    } 

    // 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); 
    } 
} 

有什么可以在这里完成，以便通过相机操作上传图像？

Answer 1

我解决我的相机问题通过改变代码下面一行onActivityResult方法：

if (resultCode == Activity.RESULT_OK) { 
      if (data == null || data.getDataString() == 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)}; 
       } 
      } 
     } 

我补充一点：if (data == null || data.getDataString() == null) {...}