Android 排除一些相机意图

Question

我正在开发一个应用程序，它需要使用从 WebView 输入的文件来使用相机。

所以这是我编写的代码，它适用于 google 相机。

在我的 webchrome 客户端中

webView.setWebChromeClient(new WebChromeClient()  
    {  

           //The undocumented magic method override  
           //Eclipse will swear at you if you try to put @Override here  
        // For Android 3.0+
        @SuppressWarnings("unused")
        public void openFileChooser(ValueCallback<Uri> uploadMsg) {  

            mUploadMessage = uploadMsg;  
            File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
            // Create the storage directory if it does not exist
            if (! imageStorageDir.exists()){
                imageStorageDir.mkdirs();                  
            }
            File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");  
            imageUri = Uri.fromFile(file); 

            final List<Intent> cameraIntents = new ArrayList<Intent>();
            final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            final PackageManager packageManager = getPackageManager();
            final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
            for(ResolveInfo res : listCam) {
                final String packageName = res.activityInfo.packageName;
                final Intent i = new Intent(captureIntent);
                i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
                i.setPackage(packageName);
                i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
                cameraIntents.add(i);

            }


            mUploadMessage = uploadMsg; 
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);  
            i.addCategory(Intent.CATEGORY_OPENABLE);  
            i.setType("image/*"); 
            Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
            chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
            MainActivity.this.startActivityForResult(chooserIntent,  FILECHOOSER_RESULTCODE);

       }

        //For Android 4.1
        @SuppressWarnings("unused")
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType){
            mUploadMessage = uploadMsg;  
            File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
            // Create the storage directory if it does not exist
            if (! imageStorageDir.exists()){
                imageStorageDir.mkdirs();                  
            }
            File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");  
            imageUri = Uri.fromFile(file); 

            final List<Intent> cameraIntents = new ArrayList<Intent>();
            final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            final PackageManager packageManager = getPackageManager();
            final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
            for(ResolveInfo res : listCam) {
                final String packageName = res.activityInfo.packageName;
                final Intent i = new Intent(captureIntent);
                i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
                i.setPackage(packageName);
                i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
                cameraIntents.add(i);

            }


            mUploadMessage = uploadMsg; 
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);  
            i.addCategory(Intent.CATEGORY_OPENABLE);  
            i.setType("image/*"); 
            Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
            chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
            MainActivity.this.startActivityForResult(chooserIntent,  FILECHOOSER_RESULTCODE);

        }

        //For Android 3.0+
       @SuppressWarnings("unused")
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture){
           mUploadMessage = uploadMsg;  
           File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
           // Create the storage directory if it does not exist
           if (! imageStorageDir.exists()){
               imageStorageDir.mkdirs();                  
           }
           File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");  
           imageUri = Uri.fromFile(file); 

           final List<Intent> cameraIntents = new ArrayList<Intent>();
           final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
           final PackageManager packageManager = getPackageManager();
           final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
           for(ResolveInfo res : listCam) {
               final String packageName = res.activityInfo.packageName;
               final Intent i = new Intent(captureIntent);
               i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
               i.setPackage(packageName);
               i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
               cameraIntents.add(i);

           }


           mUploadMessage = uploadMsg; 
           Intent i = new Intent(Intent.ACTION_GET_CONTENT);  
           i.addCategory(Intent.CATEGORY_OPENABLE);  
           i.setType("image/*"); 
           Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
           chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
           MainActivity.this.startActivityForResult(chooserIntent,  FILECHOOSER_RESULTCODE);

       }

       //For Android 5.0+
       public boolean onShowFileChooser(
               WebView webView, ValueCallback<Uri[]> filePathCallback,
               WebChromeClient.FileChooserParams fileChooserParams) {

           // Double check that we don't have any existing callbacks
           if(mFilePathCallback != null) {
               mFilePathCallback.onReceiveValue(null);
           }
           mFilePathCallback = filePathCallback;

           // Set up the take picture intent
           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;
               }
           }

           // Set up the intent to get an existing image
           Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
           contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
           contentSelectionIntent.setType("image/*");

           // Set up the intents for the Intent chooser
           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, MainActivity.FILECHOOSER_RESULTCODE);

           return true;
       }
    });

那么这是我的活动结果：

private Uri imageUri;
 @Override  
 protected void onActivityResult(int requestCode, int resultCode,  
                                    Intent intent) { 
    if (Build.VERSION.SDK_INT >= 21){
        if(requestCode != FILECHOOSER_RESULTCODE || mFilePathCallback == null) {
            super.onActivityResult(requestCode, resultCode, intent);
            return;
        }

        Uri[] results = null;

        // Check that the response is a good one
        if(resultCode == Activity.RESULT_OK) {
            if(intent == 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 = intent.getDataString();
                if (dataString != null) {
                    results = new Uri[]{Uri.parse(dataString)};
                }
            }
        }

        mFilePathCallback.onReceiveValue(results);
        mFilePathCallback = null;
        return;
    }else{
          if(requestCode==FILECHOOSER_RESULTCODE)
          {  
              if (null == this.mUploadMessage) {
                    return;
                }

                Uri result;
                if (resultCode != RESULT_OK) {
                    result = null;
                } else {
                    result = intent == null ? this.imageUri : intent.getData(); // retrieve from the private variable if the intent is null
                }

                this.mUploadMessage.onReceiveValue(result);
                this.mUploadMessage = null;
          } 
    }
 }

它正在使用 google 相机上传图片或拍照。

我的问题是如何在进行输入动作时排除一些相机意图？

比如我想删除列表中的camera 360或retrica，怎么办？

Answer 1

您可以通过setPackage限制可用的应用程序。

Answer 2

不，不支持您尝试执行的操作。您可以使用 setPackage 将其限制为一个特定的应用程序，或者将包保留为空，并允许任何有能力的应用程序处理意图。

Answer 3

编辑这部分：

for(ResolveInfo res : listCam) {
           final String packageName = res.activityInfo.packageName;
           final Intent i = new Intent(captureIntent);
           i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
           i.setPackage(packageName);
           i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
           cameraIntents.add(i);

       }

给这个：

for(ResolveInfo res : listCam) {
               final String packageName = res.activityInfo.packageName;
               final Intent i = new Intent(captureIntent);
               if(packageName.equals("ihate.this.package")||packageName.equals("begone.unwanted.package")){
                Log.i("camera", res.activityInfo.packageName+" blocked!");
               }else{
                i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
                captureIntent.setPackage(packageName);
                i.setPackage(packageName);
                i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
                   cameraIntents.add(i);
               }

           }

如果你想知道包名只需登录 res.activityInfo.packageName

您可以对 android 5.0

执行相同的方法

Android 排除一些相机意图

Android Exclude Some Camera Intent

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