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解决:编辑一条彩信,附件选择添加音频,返回到编辑界面选择play,不能播放,没有声音

2014-06-10 17:15 627 查看
【操作步骤】:编辑一条彩信,附件选择添加音频(外部音频),返回到编辑界面选择play,菜单键选择view slideshow

【测试结果】:不能播放,没有声音
【预期结果】:可以播放

根据以往的经验(之前也有一片博文涉及到类似的功能)这里首先想到的是乱码,通过查看数据库,也证实了这个想法;



因此,从文件管理器中共享一个中文文件名的音频文件(当然通过测试其他任何格式的文件包括图片,视频等只要是中文乱码则都有相同的问题)到短信中(文件管理器通过ACTION_SEND启动ComposeMessageActivity,该Activity在清单文件中注册了该Action);


CompseMessageActivity通过handleSendIntent()方法来接受Intent中的数据:

private boolean handleSendIntent() {

        Intent intent = getIntent();

        Bundle extras = intent.getExtras();

        if (extras == null) {

            return false;

        }

        final String mimeType = intent.getType();

        String action = intent.getAction();

        if (Intent.ACTION_SEND.equals(action)) {

            if (extras.containsKey(Intent.EXTRA_STREAM)) {

                final Uri uri = (Uri)extras.getParcelable(Intent.EXTRA_STREAM);

                getAsyncDialog().runAsync(new Runnable() {

                    @Override

                    public void run() {

                        mAttachFileUri = uri;

                        addAttachment(mimeType, uri, false);

                    }

                }, null, R.string.adding_attachments_title);

                return true;

            } else if (extras.containsKey(Intent.EXTRA_TEXT)) {

                mWorkingMessage.setText(extras.getString(Intent.EXTRA_TEXT));

                return true;

            }

        } else if ((Intent.ACTION_SEND_MULTIPLE.equals(action) &&

                extras.containsKey(Intent.EXTRA_STREAM)) || mIsSendMultiple) {

            SlideshowModel slideShow = mWorkingMessage.getSlideshow();

            final ArrayList<Parcelable> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);

            if (uris.size() > 0) {

                mIsSendMultiple = true;

            }

            int currentSlideCount = slideShow != null ? slideShow.size() : 0;

            int importCount = uris.size();

            if (importCount + currentSlideCount > SlideshowEditor.MAX_SLIDE_NUM) {

                importCount = Math.min(SlideshowEditor.MAX_SLIDE_NUM - currentSlideCount,

                        importCount);

                Toast.makeText(ComposeMessageActivity.this,

                        getString(R.string.too_many_attachments,

                                SlideshowEditor.MAX_SLIDE_NUM, importCount),

                                Toast.LENGTH_LONG).show();

            }

            // Attach all the pictures/videos asynchronously off of the UI thread.

            // Show a progress dialog if adding all the slides hasn't finished

            // within half a second.

            final int numberToImport = importCount;

            getAsyncDialog().runAsync(new Runnable() {

                @Override

                public void run() {

                    for (int i = 0; i < numberToImport; i++) {

                        Parcelable uri = uris.get(i);

                        addAttachment(mimeType, (Uri) uri, true);

                    }

                    updateMmsSizeIndicator();

                }

            }, null, R.string.adding_attachments_title);

            return true;

        }

        return false;

    }

调用addAttachment()方法;

 private void addAttachment(String type, Uri uri, boolean append) {

        if (uri != null) {

            // When we're handling Intent.ACTION_SEND_MULTIPLE, the passed in items can be

            // videos, and/or images, and/or some other unknown types we don't handle. When

            // a single attachment is "shared" the type will specify an image or video. When

            // there are multiple types, the type passed in is "*/*". In that case, we've got

            // to look at the uri to figure out if it is an image or video.

            boolean wildcard = "*/*".equals(type);

            if (type.startsWith("image/")

                    || (wildcard && uri.toString().startsWith(mImageUri))

                    || (wildcard && isImageFile(uri))) {

                addImage(uri, append);

            } else if (type.startsWith("video/")

                    || (wildcard && uri.toString().startsWith(mVideoUri))

                    || (wildcard && isVideoFile(uri))) {

                addVideo(uri, append);

            } else if (type.startsWith("audio/")

                    || (wildcard && uri.toString().startsWith(mAudioUri))

                    || (wildcard && isAudioFile(uri))) {

                addAudio(uri, append);

            } else if (SystemProperties.getBoolean("persist.env.mms.vcard", true)

                    && (type.equals("text/x-vcard")

                    || (wildcard && isVcardFile(uri)))) {

                addVcard(uri);

            } else {

                // Add prompt when file type is not image/video/audio.

                Message msg = Message.obtain(mAddAttachmentHandler,

                        MSG_ADD_ATTACHMENT_FAILED, uri);

                mAddAttachmentHandler.sendMessage(msg);

            }

        }

    }

接下来会调用addVideo-->setAttachement()等方法进行设置附件,而这写操作均没有进行持久化操作。那么持久化操作在哪里呢?

当我们添加过附件之后,去查看或者播放幻灯片的时候会首先对附件内容进行持久化操作。这里我们调用了MessageUtils.java中的viewMmsMessageAttachment()方法。

 public static void viewMmsMessageAttachment(final Activity activity, final Uri msgUri,

            final SlideshowModel slideshow, final int requestCode, AsyncDialog asyncDialog)
{

        boolean isSimple = (slideshow == null) ? false : slideshow.isSimple();

        if (isSimple) {

            // In attachment-editor mode, we only ever have one slide.

            MessageUtils.viewSimpleSlideshow(activity, slideshow);

        } else {

            // The user wants to view the slideshow. We have to persist the slideshow parts

            // in a background task. If the task takes longer than a half second, a progress dialog

            // is displayed. Once the PDU persisting is done, another runnable on the UI thread get

            // executed to start the SlideshowActivity.

            asyncDialog.runAsync(new Runnable() {

                @Override

                public void run() {

                    // If a slideshow was provided, save it to disk first.

                    if (slideshow != null) {

                        PduPersister persister = PduPersister.getPduPersister(activity);

                        try {

                            PduBody pb = slideshow.toPduBody();

                            persister.updateParts(msgUri, pb, null);

                            slideshow.sync(pb);

                        } catch (MmsException e) {

                            Log.e(TAG, "Unable to save message for preview");

                            return;

                        }

                    }

                }

            }, new Runnable() {

                @Override

                public void run() {

                    // Once the above background thread is complete, this runnable is run

                    // on the UI thread to launch the slideshow activity.

                    launchSlideshowActivity(activity, msgUri, requestCode);

                }

            }, R.string.building_slideshow_title);

        }

    }
上述代码中调用了PudPersister类中的updateParts()方法;

public void updateParts(Uri uri, PduBody body, HashMap<Uri, InputStream> preOpenedFiles)

            throws MmsException {

        try {

            PduCacheEntry cacheEntry;

            synchronized(PDU_CACHE_INSTANCE) {

                if (PDU_CACHE_INSTANCE.isUpdating(uri)) {

                    if (LOCAL_LOGV) {

                        Log.v(TAG, "updateParts: " + uri + " blocked by isUpdating()");

                    }

                    try {

                        PDU_CACHE_INSTANCE.wait();

                    } catch (InterruptedException e) {

                        Log.e(TAG, "updateParts: ", e);

                    }

                    cacheEntry = PDU_CACHE_INSTANCE.get(uri);

                    if (cacheEntry != null) {

                        ((MultimediaMessagePdu) cacheEntry.getPdu()).setBody(body);

                    }

                }

                // Tell the cache to indicate to other callers that this item

                // is currently being updated.

                PDU_CACHE_INSTANCE.setUpdating(uri, true);

            }

            ArrayList<PduPart> toBeCreated = new ArrayList<PduPart>();

            HashMap<Uri, PduPart> toBeUpdated = new HashMap<Uri, PduPart>();

            int partsNum = body.getPartsNum();

            StringBuilder filter = new StringBuilder().append('(');

            for (int i = 0; i < partsNum; i++) {

                PduPart part = body.getPart(i);

                Uri partUri = part.getDataUri();

                if ((partUri == null) || TextUtils.isEmpty(partUri.getAuthority())

                        || !partUri.getAuthority().startsWith("mms")) {

                    toBeCreated.add(part);

                } else {

                    toBeUpdated.put(partUri, part);

                    // Don't use 'i > 0' to determine whether we should append

                    // 'AND' since 'i = 0' may be skipped in another branch.

                    if (filter.length() > 1) {

                        filter.append(" AND ");

                    }

                    filter.append(Part._ID);

                    filter.append("!=");

                    DatabaseUtils.appendEscapedSQLString(filter, partUri.getLastPathSegment());

                }

            }

            filter.append(')');

            long msgId = ContentUris.parseId(uri);

            // Remove the parts which doesn't exist anymore.

            SqliteWrapper.delete(mContext, mContentResolver,

                    Uri.parse(Mms.CONTENT_URI + "/" + msgId + "/part"),

                    filter.length() > 2 ? filter.toString() : null, null);

            // Create new parts which didn't exist before.

            for (PduPart part : toBeCreated) {

                persistPart(part, msgId, preOpenedFiles);

            }


            // Update the modified parts.

            for (Map.Entry<Uri, PduPart> e : toBeUpdated.entrySet()) {

                updatePart(e.getKey(), e.getValue(), preOpenedFiles);

            }


        } finally {

            synchronized(PDU_CACHE_INSTANCE) {

                PDU_CACHE_INSTANCE.setUpdating(uri, false);

                PDU_CACHE_INSTANCE.notifyAll();

            }

        }

    }

根据上述代码我们可以发现,如果是第一次,也就是没有持久化的时候则会进行insert操作,如果已经执行过insert则会进行update操作,在之前的一篇博客中已经描述过具体的修改方法,这里不再详细赘述,只是把修改的内容给展示出来,其他操作请参考我之前写的一篇博客,地址为:http://blog.csdn.net/huangyabin001/article/details/27523961

修改后:

private void updatePart(Uri uri, PduPart part, HashMap<Uri, InputStream> preOpenedFiles)

            throws MmsException {

        ContentValues values = new ContentValues(7);

        int charset = part.getCharset();

        if (charset != 0 ) {

            values.put(Part.CHARSET, charset);

        }

        String contentType = null;

        if (part.getContentType() != null) {

            contentType = toIsoString(part.getContentType());

            values.put(Part.CONTENT_TYPE, contentType);

        } else {

            throw new MmsException("MIME type of the part must be set.");

        }

        if (part.getFilename() != null) {

            String fileName = new String(part.getFilename());

            values.put(Part.FILENAME, fileName);

        }

        if (part.getName() != null) {

            String name = new String(part.getName());

            values.put(Part.NAME, name);

        }

        String value = null;

        if (part.getContentDisposition() != null) {

            value = toIsoString(part.getContentDisposition());

            values.put(Part.CONTENT_DISPOSITION,value);

        }

        if (part.getContentId() != null) {

            byte[] byteContentId=part.getContentId();

            int encodeContentId=detectEncoding(byteContentId);

            try{

                switch(encodeContentId){

                    case GB2312:

                        value=new String(byteContentId,"GB2312");

                    break;

                    case ASCII:

                        value=new String(byteContentId,"ASCII");

                    break;

                    case UTF8:

                        value=new String(byteContentId,"UTF-8");

                    break;

                    case UNICODE:

                        value=new String(byteContentId,"Unicode");

                    break;

                    default:

                        value = toIsoString(byteContentId);

                    break;

                }

                values.put(Part.CONTENT_ID, value);

            }catch(Exception e){

                e.printStackTrace();

            }

        }

        if (part.getContentLocation() != null) {

            byte[] byteContentLocation=part.getContentLocation();

            int encodeContentLocation=detectEncoding(byteContentLocation);

            try{

                switch(encodeContentLocation){

                    case GB2312:

                        value=new String(byteContentLocation,"GB2312");

                    break;

                    case ASCII:

                        value=new String(byteContentLocation,"ASCII");

                    break;

                    case UTF8:

                        value=new String(byteContentLocation,"UTF-8");

                    break;

                    case UNICODE:

                        value=new String(byteContentLocation,"Unicode");

                    break;

                    default:

                        value = toIsoString(byteContentLocation);

                    break;

                }

                values.put(Part.CONTENT_LOCATION,value);

            }catch(Exception e){

                e.printStackTrace();

            }

        }
        SqliteWrapper.update(mContext, mContentResolver, uri, values, null, null);

        // Only update the data when:

        // 1. New binary data supplied or

        // 2. The Uri of the part is different from the current one.

        if ((part.getData() != null)

                || (uri != part.getDataUri())) {

            persistData(part, uri, contentType, preOpenedFiles);

        }

    }

修改前:

  private void updatePart(Uri uri, PduPart part, HashMap<Uri, InputStream> preOpenedFiles)

            throws MmsException {

        ContentValues values = new ContentValues(7);

        int charset = part.getCharset();

        if (charset != 0 ) {

            values.put(Part.CHARSET, charset);

        }

        String contentType = null;

        if (part.getContentType() != null) {

            contentType = toIsoString(part.getContentType());

            values.put(Part.CONTENT_TYPE, contentType);

        } else {

            throw new MmsException("MIME type of the part must be set.");

        }

        if (part.getFilename() != null) {

            String fileName = new String(part.getFilename());

            values.put(Part.FILENAME, fileName);

        }

        if (part.getName() != null) {

            String name = new String(part.getName());

            values.put(Part.NAME, name);

        }

        Object value = null;

        if (part.getContentDisposition() != null) {

            value = toIsoString(part.getContentDisposition());

            values.put(Part.CONTENT_DISPOSITION, (String) value);

        }

        if (part.getContentId() != null) {

            value = toIsoString(part.getContentId());

            values.put(Part.CONTENT_ID, (String) value);

        }

        if (part.getContentLocation() != null) {

            value = toIsoString(part.getContentLocation());

            values.put(Part.CONTENT_LOCATION, (String) value);

        }

        SqliteWrapper.update(mContext, mContentResolver, uri, values, null, null);

        // Only update the data when:

        // 1. New binary data supplied or

        // 2. The Uri of the part is different from the current one.

        if ((part.getData() != null)

                || (uri != part.getDataUri())) {

            persistData(part, uri, contentType, preOpenedFiles);

        }

    }
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