Example usage for android.provider DocumentsContract buildRootsUri

Introduction

In this page you can find the example usage for android.provider DocumentsContract buildRootsUri.

Prototype

public static Uri buildRootsUri(String authority) 

Source Link

Document

Build URI representing the roots of a document provider.

Usage

From source file:com.example.android.storageprovider.MyCloudFragment.java

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == R.id.sample_action) {
        toggleLogin();//w  w  w .j a v  a 2  s  .  c o  m
        item.setTitle(mLoggedIn ? R.string.log_out : R.string.log_in);

        // BEGIN_INCLUDE(notify_change)
        // Notify the system that the status of our roots has changed.  This will trigger
        // a call to MyCloudProvider.queryRoots() and force a refresh of the system
        // picker UI.  It's important to call this or stale results may persist.
        getActivity().getContentResolver().notifyChange(DocumentsContract.buildRootsUri(AUTHORITY), null,
                false);
        // END_INCLUDE(notify_change)
    }
    return true;
}

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From source file:com.raspi.chatapp.util.storage.file.LocalStorageProvider.java

/**
 * Check to see if we are missing the Storage permission group. In those cases, we cannot access local files and
 * must invalidate any root URIs currently available.
 *
 * @param context The current Context/*  w w  w  . jav a 2  s  . com*/
 * @return whether the permission has been granted it is safe to proceed
 */
static boolean isMissingPermission(@Nullable Context context) {
    if (context == null) {
        return true;
    }
    if (ContextCompat.checkSelfPermission(context,
            Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
        // Make sure that our root is invalidated as apparently we lost permission
        context.getContentResolver()
                .notifyChange(DocumentsContract.buildRootsUri(LocalStorageProvider.AUTHORITY), null);
        return true;
    }
    return false;
}

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From source file:org.alfresco.mobile.android.application.providers.storage.StorageAccessDocumentsProvider.java

@Override
public Cursor queryRoots(String[] projection) throws FileNotFoundException {
    final DocumentFolderCursor rootCursor = new DocumentFolderCursor(resolveRootProjection(projection));
    final Uri uri = DocumentsContract.buildRootsUri(mAuthority);
    try {/*www  .ja v  a2s . co m*/
        for (int i = 0; i < accountsIndex.size(); i++) {
            addRootRow(rootCursor, accountsIndex.get(accountsIndex.keyAt(i)));
        }
    } catch (Exception e) {
        rootCursor.setErrorInformation("Error : " + e.getMessage());
        rootCursor.setNotificationUri(getContext().getContentResolver(), uri);
        getContext().getContentResolver().notifyChange(uri, null);
        Log.w(TAG, Log.getStackTraceString(e));
    }

    return rootCursor;
}

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From source file:cn.edu.wyu.documentviewer.RootsCache.java

/**
 * Bring up requested provider and query for all active roots.
 *//* w ww  .ja  v a  2  s  . c  o m*/
private Collection<RootInfo> loadRootsForAuthority(ContentResolver resolver, String authority) {
    if (DEBUG)
        Log.d(TAG, "Loading roots for " + authority);

    synchronized (mObservedAuthorities) {
        if (mObservedAuthorities.add(authority)) {
            // Watch for any future updates
            final Uri rootsUri = DocumentsContract.buildRootsUri(authority);
            mContext.getContentResolver().registerContentObserver(rootsUri, true, mObserver);
        }
    }

    final List<RootInfo> roots = Lists.newArrayList();
    final Uri rootsUri = DocumentsContract.buildRootsUri(authority);

    ContentProviderClient client = null;
    Cursor cursor = null;
    try {
        client = DocumentsApplication.acquireUnstableProviderOrThrow(resolver, authority);
        cursor = client.query(rootsUri, null, null, null, null);
        while (cursor.moveToNext()) {
            final RootInfo root = RootInfo.fromRootsCursor(authority, cursor);
            roots.add(root);
        }
    } catch (Exception e) {
        Log.w(TAG, "Failed to load some roots from " + authority + ": " + e);
    } finally {
        IOUtils.closeQuietly(cursor);
        ContentProviderClient.releaseQuietly(client);
    }
    return roots;
}

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