Android实现彩信附件的添加与删除功能

MessageUtils.selectImage(this, REQUEST_CODE_ATTACH_IMAGE);

Intent innerIntent = new Intent(Intent.ACTION_GET_CONTENT);
innerIntent.setType(contentType); //image type
Intent wrapperIntent = Intent.createChooser(innerIntent, null);
startActivityForResult(wrapperIntent,requestCode);

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Mms.ScrapSpace.CONTENT_URI);
startActivityForResult(intent, REQUEST_CODE_TAKE_PICTURE);

Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
startActivityForResult(intent, REQUEST_CODE_TAKE_VIDEO);

MessageUtils.selectAudio(this, REQUEST_CODE_ATTACH_SOUND);
Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType(ContentType.AUDIO_AMR);
intent.setClassName("com.android.soundrecorder", "com.android.soundrecorder.SoundRecorder");

Uri dataUri = mWorkingMessage.saveAsMms(false);
Intent intent = new Intent(this, SlideshowEditActivity.class);
intent.setData(dataUri);
startActivityForResult(intent, REQUEST_CODE_CREATE_SLIDESHOW);

addImage(uri, false);

addVideo(data.getData(), false);

Message msg = Message.obtain(mHandler, MSG_REMOVE_ATTACHMENT);
msg.sendToTarget();

mWorkingMessage.setAttachment(WorkingMessage.TEXT, null, false);

SlideModel slide = mSlideshow.get(0);
MediaModel media;
// Remove any previous attachments.
slide.removeImage();
slide.removeVideo();
slide.removeAudio();
// If we're changing to text, just bail out.
if (type == TEXT) {
  return;
}
// Make a correct MediaModel for the type of attachment.
if (type == IMAGE) {
  media = new ImageModel(mContext, uri, mSlideshow.getLayout()
      .getImageRegion());
} else if (type == VIDEO) {
  media = new VideoModel(mContext, uri, mSlideshow.getLayout()
      .getImageRegion());
} else if (type == AUDIO) {
  media = new AudioModel(mContext, uri);
} else {
  throw new IllegalArgumentException("changeMedia type=" + type
      + ", uri=" + uri);
}
// Add it to the slide.
slide.add(media);
// For video and audio, set the duration of the slide to
// that of the attachment.
if (type == VIDEO || type == AUDIO) {
  slide.updateDuration(media.getDuration());
}

private void internalAddOrReplace(MediaModel old, MediaModel media) {
  int addSize = media.getMediaSize();
  int removeSize;
  if (old == null) {
    if (null != mParent) {
      mParent.checkMessageSize(addSize);
    }
    mMedia.add(media);
    increaseSlideSize(addSize);
    increaseMessageSize(addSize);
  } else {
    removeSize = old.getMediaSize();
    if (addSize > removeSize) {
      if (null != mParent) {
        mParent.checkMessageSize(addSize - removeSize);
      }
      increaseSlideSize(addSize - removeSize);
      increaseMessageSize(addSize - removeSize);
    } else {
      decreaseSlideSize(removeSize - addSize);
      decreaseMessageSize(removeSize - addSize);
    }
    mMedia.set(mMedia.indexOf(old), media);
    old.unregisterAllModelChangedObservers();
  }
  for (IModelChangedObserver observer : mModelChangedObservers) {
    media.registerModelChangedObserver(observer);
  }
}

public static void resizeImageAsync(final Context context,
     final Uri imageUri, final Handler handler,
     final ResizeImageResultCallback cb, final boolean append) {
   // Show a progress toast if the resize hasn't finished
   // within one second.
   // Stash the runnable for showing it away so we can cancel
   // it later if the resize completes ahead of the deadline.
   final Runnable showProgress = new Runnable() {
     public void run() {
       Toast.makeText(context, R.string.compressing,
           Toast.LENGTH_SHORT).show();
     }
   };
   // Schedule it for one second from now.
   handler.postDelayed(showProgress, 1000);
   new Thread(new Runnable() {
     public void run() {
       final PduPart part;
       try {
         UriImage image = new UriImage(context, imageUri);
         part = image.getResizedImageAsPart(MmsConfig
             .getMaxImageWidth(), MmsConfig.getMaxImageHeight(),
             MmsConfig.getMaxMessageSize() - MESSAGE_OVERHEAD);
       } finally {
         // Cancel pending show of the progress toast if necessary.
         handler.removeCallbacks(showProgress);
       }
       handler.post(new Runnable() {
         public void run() {
           cb.onResizeResult(part, append);
         }
       });
     }
   }).start();
}