Java ContentResolver.notifyChange方法代码示例

import android.content.ContentResolver; //导入方法依赖的package包/类
@Override
public ContentProviderResult[] applyBatch(ArrayList<ContentProviderOperation> operations)
        throws OperationApplicationException {
    SQLiteDatabase db = mDbHolder.get();
    db.beginTransaction();
    ContentProviderResult[] result = null;
    try {
        result = super.applyBatch(operations);
        db.setTransactionSuccessful();
        ContentResolver res = mCr;
        res.notifyChange(ScraperStore.ALL_CONTENT_URI, null);
        return result;
    } finally {
        db.endTransaction();
    }
}
 

import android.content.ContentResolver; //导入方法依赖的package包/类
@Override
public void onDeviceListUpdate(List<Device> devices) {
    final long now = System.currentTimeMillis() / 1000;
    final ContentResolver cr = getContentResolver();
    for(String deviceName : mUpnpId.keySet()){
        boolean isInList = false;
       for(Device device : devices){
           if(deviceName.startsWith("upnp://" + device.hashCode())){
               isInList = true;
               break;
           }
       }
        if (DBG) Log.d(TAG, "UPNP : is in list ?  "+deviceName+ " "+String.valueOf(isInList));
        long id = mUpnpId.get(deviceName).first;
        updateServerDb(id, cr, mUpnpId.get(deviceName).second, isInList?1:0, now);
        mUpnpId.put(deviceName, new Pair<>(id,isInList?1:0 ));
   }
    cr.notifyChange(NOTIFY_URI, null);
}
 

import android.content.ContentResolver; //导入方法依赖的package包/类
/**
 * returns that baseUri with appended Id and
 * if not in an transaction calls notifyChange for the baseUri and any additional Uri
 */
private final static Uri createUriAndNotify(long rowId, SQLiteDatabase db,
        Uri baseUri, ContentResolver cr, Uri... additionalNotifications) {
    if (rowId < 0) return null;
    Uri returnValue = ContentUris.withAppendedId(baseUri, rowId);
    // only notify when not in an transaction
    if (!db.inTransaction()) {
        cr.notifyChange(baseUri, null);
        if (additionalNotifications != null)
            for (Uri additional : additionalNotifications)
                cr.notifyChange(additional, null);
    }
    return returnValue;
}
 

import android.content.ContentResolver; //导入方法依赖的package包/类
public static void updateDashClock(Context context) {
    ContentResolver contentResolver = context.getContentResolver();
    contentResolver.notifyChange(getUpdateUri(), null);
}
 

import android.content.ContentResolver; //导入方法依赖的package包/类
protected static void handleDb(Context context, boolean hasLocalConnection) {
    ContentResolver cr = context.getContentResolver();
    if (hasLocalConnection) {
        long now = System.currentTimeMillis() / 1000;
        // list all servers in the db
        Cursor c = cr.query(SERVER_URI, PROJECTION_SERVERS, SELECTION_SMB, null, null);
        if (c != null) {
            if (DBG) Log.d(TAG, "found " + c.getCount() + " servers");
            while (c.moveToNext()) {
                long id = c.getLong(COLUMN_ID);
                String server = c.getString(COLUMN_DATA);
                int active = c.getInt(COLUMN_ACTIVE);
                MetaFile serverFile = MetaFile.from(server);
                if (serverFile == null) {
                    Log.d(TAG, "bad server [" + server + "]");
                    continue;
                }
                if (serverFile.exists()) {
                    if (DBG) Log.d(TAG, "server exists: " + serverFile.getDisplayPath());
                    updateServerDb(id, cr, active, 1, now);
                } else {
                    if (DBG) Log.d(TAG, "server does not exist: " + serverFile.getDisplayPath());
                    updateServerDb(id, cr, active, 0, now);
                }
            }
            c.close();
            // notify about a change in the db
            cr.notifyChange(NOTIFY_URI, null);
        } else if (DBG) {
            Log.d(TAG, "server query returned NULL");
        }
    } else {
        if (DBG) Log.d(TAG, "setting all smb servers inactive");
        // no more smb servers.
        ContentValues cv = new ContentValues(1);
        cv.put(MusicStore.SmbServer.SmbServerColumns.ACTIVE, "0");
        // update everything with inactive.
        cr.update(SERVER_URI, cv, SELECTION_SMB, null);
        // and tell the world
        cr.notifyChange(NOTIFY_URI, null);
    }
}
 

import android.content.ContentResolver; //导入方法依赖的package包/类
protected void handleDb(Context context, boolean hasConnection, boolean hasLocalConnection) {
    if(mUpnpId==null)
        mUpnpId =new ConcurrentHashMap<>();
    mUpnpId.clear();
    final ContentResolver cr = context.getContentResolver();
    Log.d(TAG, "hasConnection "+String.valueOf(hasConnection));
    if (hasConnection) {
        Lmhosts.reset();
        final long now = System.currentTimeMillis() / 1000;
        // list all servers in the db
        Cursor c = cr.query(SERVER_URI, PROJECTION_SERVERS, SELECTION_ALL_NETWORK, null, null);
        if (c != null) {
            if (DBG) Log.d(TAG, "found " + c.getCount() + " servers");
            while (c.moveToNext()) {
                final long id = c.getLong(COLUMN_ID);
                final String server = c.getString(COLUMN_DATA);
                final int active = c.getInt(COLUMN_ACTIVE);
                if(!server.startsWith("upnp")) {
                    final FileEditor serverFile = FileEditorFactoryWithUpnp.getFileEditorForUrl(Uri.parse(server+"/"), null);
                    if (serverFile == null) {
                        Log.d(TAG, "bad server [" + server + "]");
                        continue;
                    }
                    new Thread() {
                        @Override
                        public void run() {
                            if (serverFile.exists()) {
                                if (DBG)
                                    Log.d(TAG, "server exists: " + server);
                                updateServerDb(id, cr, active, 1, now);
                            } else {
                                if (DBG)
                                    Log.d(TAG, "server does not exist: " + server);
                                updateServerDb(id, cr, active, 0, now);
                            }
                        }
                    }.start();
                }
                else if(server.startsWith("upnp")){
                    mUpnpId.put(server,new Pair<>(id, active));
                }
                else
                    updateServerDb(id, cr, active, 1, now); //for distant folders, we don't check existence (for now)
            }
            if(mUpnpId.size()>0&&hasLocalConnection){
                if(!mUpnpDiscoveryStarted) {
                    //we start upnp discovery but we don't want to add the listener twice
                    UpnpServiceManager.startServiceIfNeeded(context).addListener(this);
                    mUpnpDiscoveryStarted=true;
                }
                onDeviceListUpdate(new ArrayList<Device>(UpnpServiceManager.startServiceIfNeeded(context).getDevices()));
            }
            c.close();
            // notify about a change in the db
            cr.notifyChange(NOTIFY_URI, null);
        } else if (DBG) {
            Log.d(TAG, "server query returned NULL");
        }
    } else{
            if (DBG) Log.d(TAG, "setting all smb servers inactive");
            // no more smb servers.
            ContentValues cv = new ContentValues(1);
            cv.put(VideoStore.SmbServer.SmbServerColumns.ACTIVE, "0");
            // update everything with inactive.
            cr.update(SERVER_URI, cv, SELECTION_ALL_NETWORK, null);
            // and tell the world

            cr.notifyChange(NOTIFY_URI, null);
    }
}
 

import android.content.ContentResolver; //导入方法依赖的package包/类
@Override
public void onMountedServerChange() {
  final Uri rootsUri = DocumentsContract.buildRootsUri(AUTHORITY);
  final ContentResolver resolver = getContext().getContentResolver();
  resolver.notifyChange(rootsUri, null, false);
}