private synchronized void compareAudioFiles() {
// Log.i("Test", "----------compareAudioFiles");
if (null == mAudioCategory) {
return;
}
String volumeName = "external";
Uri uri = Audio.Media.getContentUri(volumeName);
String[] columns =
new String[] {
BaseColumns._ID,
MediaColumns.DATA,
MediaColumns.DISPLAY_NAME,
MediaColumns.SIZE,
MediaColumns.DATE_ADDED,
MediaColumns.DATE_MODIFIED,
AudioColumns.DURATION,
AudioColumns.ARTIST,
AudioColumns.ALBUM,
AudioColumns.ALBUM_ID,
MediaColumns.MIME_TYPE,
MediaColumns.TITLE
};
Cursor cur = null;
try {
cur =
mContext
.getContentResolver()
.query(uri, columns, buildSelectionByCategory(TYPE_AUDIO), null, null);
if (cur == null) {
return;
}
if (!cur.moveToFirst()) {
return;
}
compareFile(cur, mAudioCategory, mDeletedAudioList, TYPE_AUDIO);
} catch (SQLiteException ex) {
ex.printStackTrace();
} finally {
if (cur != null) {
cur.close();
}
}
}
private void registerReceiver() {
ContentResolver resolver = mContext.getContentResolver();
String volumeName = "external";
Uri uriAudio = Audio.Media.getContentUri(volumeName);
mAudioObv = new ContentObserverAudio();
resolver.registerContentObserver(uriAudio, true, mAudioObv);
Uri uriImages = Images.Media.getContentUri(volumeName);
mImagesObv = new ContentObserverImage();
resolver.registerContentObserver(uriImages, true, mImagesObv);
Uri uriVideo = Video.Media.getContentUri(volumeName);
mVideoObv = new ContentObserverVideo();
resolver.registerContentObserver(uriVideo, true, mVideoObv);
mMediaScanReceiver = new MediaScanReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
filter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
filter.addDataScheme("file");
mContext.registerReceiver(mMediaScanReceiver, filter);
}
/**
* 获取专辑名称
*
* @param dbId
* @return
*/
public String getAlbumBucket(int dbId) {
String volumeName = "external";
String selection = BaseColumns._ID + "='" + dbId + "'";
String[] columns = new String[] {AudioColumns.ALBUM};
Uri uri = Audio.Media.getContentUri(volumeName);
Cursor cur = null;
try {
cur = mContext.getContentResolver().query(uri, columns, selection, null, null);
if (null == cur) {
return null;
}
if (!cur.moveToFirst()) {
return null;
}
return MediaDbUtil.getString(cur, AudioColumns.ALBUM);
} finally {
if (cur != null) {
cur.close();
}
}
}
/**
* 获取文件的MimeType
*
* @param dbId
* @param type
* @return
*/
public String getMimeType(int dbId, int type) {
String volumeName = "external";
String selection = BaseColumns._ID + "='" + dbId + "'";
String[] columns = new String[] {MediaColumns.MIME_TYPE};
Uri uri = null;
switch (type) {
case TYPE_IMAGE:
uri = Images.Media.getContentUri(volumeName);
break;
case TYPE_AUDIO:
uri = Audio.Media.getContentUri(volumeName);
break;
case TYPE_VIDEO:
uri = Video.Media.getContentUri(volumeName);
break;
default:
break;
}
if (uri == null) {
return null;
}
Cursor cur = null;
try {
cur = mContext.getContentResolver().query(uri, columns, selection, null, null);
if (null == cur) {
return null;
}
if (!cur.moveToFirst()) {
return null;
}
return MediaDbUtil.getString(cur, MediaColumns.MIME_TYPE);
} finally {
if (cur != null) {
cur.close();
}
}
}
public void refreshCategoryInfo() {
// clear
for (FileCategory fc : sCategories) {
setCategoryInfo(fc, 0, 0);
}
// query database
String volumeName = "external";
Uri uri = Audio.Media.getContentUri(volumeName);
refreshMediaCategory(FileCategory.Music, uri);
uri = Video.Media.getContentUri(volumeName);
refreshMediaCategory(FileCategory.Video, uri);
uri = Images.Media.getContentUri(volumeName);
refreshMediaCategory(FileCategory.Picture, uri);
uri = Files.getContentUri(volumeName);
refreshMediaCategory(FileCategory.Theme, uri);
refreshMediaCategory(FileCategory.Doc, uri);
refreshMediaCategory(FileCategory.Zip, uri);
refreshMediaCategory(FileCategory.Apk, uri);
}
private Uri getContentUriByCategory(FileCategory cat) {
Uri uri;
String volumeName = "external";
switch (cat) {
case Theme:
case Doc:
case Zip:
case Apk:
uri = Files.getContentUri(volumeName);
break;
case Music:
uri = Audio.Media.getContentUri(volumeName);
break;
case Video:
uri = Video.Media.getContentUri(volumeName);
break;
case Picture:
uri = Images.Media.getContentUri(volumeName);
break;
default:
uri = null;
}
return uri;
}
