IOException when trying to access photo taken by activity in LiveCard service

Question

I have a simple GDK app that has a menu option on a LiveCard to take a photo. I've followed the instructions in the Documentation to use the FileObserver very similar to the example there. However, once the file is done writing, I attempt to call a method in the binder to my service which then in turn tries to set the image uri on an ImageView in a RemoteView.

In the AndroidManifest.xml I have the following permissions:

---

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" android:required="true" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

MenuActivity:

---

   @Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.add_photo:
            startActivityForResult(new Intent(MediaStore.ACTION_IMAGE_CAPTURE), TAKE_PIC_REQ);                      
            break;
    }
    return super.onOptionsItemSelected(item);
}

    ...
    private void processPictureWhenReady(final String picturePath) {
    final File pictureFile = new File(picturePath);

    if (pictureFile.exists()) {

        liveCardService.setPicture(picturePath);
    }
    ...

LiveCardService:

---

    public class CompPlayerBinder extends Binder {


    public void setPlayerPicture(String picturePath) {
        liveCard.unpublish();

        RemoteViews view = new RemoteViews(getPackageName(), R.layout.photo_layout);

        view.setImageViewUri(R.id.the_photo, Uri.fromFile(new File(picturePath)));
        liveCard.setViews(view);

        Intent i = new Intent(CompPlayerService.this, MenuActivity.class);
        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
        liveCard.setAction(PendingIntent.getActivity(Service.this, 0, i, 0));
        liveCard.publish(LiveCard.PublishMode.SILENT);




     }
    }

When I run this I'm able to take the photo, but when I tap to accept, I get the following exception in my log

02-13 22:25:53.750 576-3201/? E/CachedFilesManager﹕ Failed to change mode on file

/mnt/sdcard/thumbnail_cache/t_thumb_20140213_222552_748.jpg java.io.IOException: Operation not permitted at com.google.glass.fs.Filesystem.changeMode(Native Method) at com.google.glass.util.CachedFilesManager.save(CachedFilesManager.java:433) at com.google.glass.camera.CameraUtils.saveThumbnailToCachedFiles(CameraUtils.java:76) at com.google.glass.camera.ApiTakePictureActivity$1.doInBackground(ApiTakePictureActivity.java:110) at com.google.glass.camera.ApiTakePictureActivity$1.doInBackground(ApiTakePictureActivity.java:105) at android.os.AsyncTask$2.call(AsyncTask.java:273) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) at java.util.concurrent.FutureTask.run(FutureTask.java:137) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) at java.lang.Thread.run(Thread.java:856)

Answer 1

Just figured out my problem. I was following the Compass example for the MenuActivity. In that example, after the menu is closed, the activity is finished, because of this onActivityResult never has a chance to run.

@Override
public void onOptionsMenuClosed(Menu menu) {
    super.onOptionsMenuClosed(menu);

    unbindService(mConnection);

    // We must call finish() from this method to ensure that the activity ends either when an
    // item is selected from the menu or when the menu is dismissed by swiping down.
    finish();
}

so what I do instead is only close the menu activity for the other menu options, and leave the activity running until after the photo is done being processed.

Answer 2

I'm Currently using the content resolver in an activity to grab the last picture taken. This is coded for an activity so you may have to adjust for livecard.

There is a dirty project here https://github.com/silenz357/Glass where this is "working". Hope it helps

     String[] projection = new String[]{MediaStore.Images.ImageColumns._ID,MediaStore.Images.ImageColumns.DATA,MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME,MediaStore.Images.ImageColumns.DATE_TAKEN,MediaStore.Images.ImageColumns.MIME_TYPE};                  
     final Cursor cursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,projection, null, null, MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC");                
    if(cursor != null){                 
         cursor.moveToFirst();
         String path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA));                    t.setText(path);
         ImageView imageView = (ImageView)findViewById(R.id.imageView1);    
                  image = BitmapFactory.decodeFile(path);                   
         int nh = (int) ( image.getHeight() * (512.0 / image.getWidth()) );                                
         Bitmap scaled = Bitmap.createScaledBitmap(image, 512, nh, true);                       
         imageView.setImageBitmap(scaled);