Java Metadata.isFolder方法代码示例

import com.google.android.gms.drive.Metadata; //导入方法依赖的package包/类
void readRelativeDir(Context context, Icons.IconType iconType, Icons.IconState state, MetadataBuffer children) {
    for (int i = 0; i < children.getCount(); ++i) {
        Metadata d = children.get(i);
        if (!d.isFolder()) {
            DriveFile file = Drive.DriveApi.getFile(mClient, d.getDriveId());
            DriveApi.ContentsResult contentsResult =
                    file.openContents(mClient, DriveFile.MODE_READ_ONLY, null).await();
            if (!contentsResult.getStatus().isSuccess()) {
                continue;
            }
            Contents r = contentsResult.getContents();
            Icons.saveIcon(context, d.getTitle(), iconType, state, r.getInputStream());
        }
    }
    children.close();
}
 

import com.google.android.gms.drive.Metadata; //导入方法依赖的package包/类
void readIconsDir(Context context, MetadataBuffer children) {
    for (int i = 0; i < children.getCount(); ++i) {
        Metadata d = children.get(i);
        if (!d.isFolder())
            continue;

        boolean found = false;
        for (Icons.IconType iconType : Icons.IconType.values()) {
            for (Icons.IconState state : Icons.IconState.values()) {
                String relativePath = iconType.name() + state.name();
                if (d.getTitle().equals(relativePath)) {
                    DriveFolder iconsDir = Drive.DriveApi.getFolder(mClient, d.getDriveId());
                    DriveApi.MetadataBufferResult resultIconsDir = iconsDir.listChildren(mClient).await();
                    if (!resultIconsDir.getStatus().isSuccess()) {
                        continue;
                    }
                    readRelativeDir(context, iconType, state, resultIconsDir.getMetadataBuffer());
                    found = true;
                    break;
                }
            }
            if (found)
                break;
        }
    }
    children.close();
}
 

import com.google.android.gms.drive.Metadata; //导入方法依赖的package包/类
@Override
protected Boolean doInBackground(Void... params) {

    // Create folder
    DriveFolder backupDir = Drive.DriveApi.getFolder(mClient, driveId);
    DriveApi.MetadataBufferResult result = backupDir.listChildren(mClient).await();
    if (!result.getStatus().isSuccess()) {
        // We failed, stop the task and return.
        return false;
    }

    MetadataBuffer b = null;
    try {
        b = result.getMetadataBuffer();
        for (int i = 0; i < b.getCount(); ++i) {
            Metadata d = b.get(i);
            if (d.getTitle().equals("scenes.json")) {
                scenes = readFile(d);
            } else if (d.getTitle().equals("groups.json")) {
                groups = readFile(d);
            } else if (d.getTitle().equals("devices.json")) {
                devices = readFile(d);
            } else if (d.isFolder() && d.getTitle().equals("icons")) {
                DriveFolder iconsDir = Drive.DriveApi.getFolder(mClient, d.getDriveId());
                DriveApi.MetadataBufferResult resultIconsDir = iconsDir.listChildren(mClient).await();
                if (!resultIconsDir.getStatus().isSuccess()) {
                    // We failed, stop the task and return.
                    continue;
                }
                readIconsDir(context, resultIconsDir.getMetadataBuffer());
            }
        }
    } finally {
        if (b != null) b.close();
    }

    return true;
}
 

import com.google.android.gms.drive.Metadata; //导入方法依赖的package包/类
/**
 * Looks for the specified file name (or title).<br><br>
 * 
 * <b>Note</b><br>
 *  Only returns the first found file if there is more than one file
 *  with the same filename/title.
 * 
 * @param fileName	The file name or title of the desired file.
 * @returns DriveFile The desired file or null if there is none. See
 * 					  {@link DriveFile}.
 * 
 */
public synchronized DriveFile sync_getFile(String fileName) throws TBDriveException {
	
	DriveFile driveFile = null;
	
    //Look for a file with title/filename
    SortOrder sortOrder = new SortOrder.Builder()
    	.addSortAscending(SortableField.TITLE)
    	.addSortDescending(SortableField.MODIFIED_DATE).build();
    
	Query query = new Query.Builder().addFilter(
			Filters.and(
					Filters.eq(SearchableField.TITLE, fileName)
					, Filters.eq(SearchableField.TRASHED, false)
					//, Filters.eq(SearchableField.MIME_TYPE, "text/plain")    					
					//, Filters.eq(customPropertyKey, "world")
					)
			)
			.setSortOrder(sortOrder)
	        .build();
	
	MetadataBufferResult result = Drive.DriveApi.query(getGoogleApiClient(), query).await();
	
	if (!result.getStatus().isSuccess()) {
        Log.e(TAG, "Problem while retrieving files: '" + result.getStatus().getStatusMessage() + "'");
        result.release();
        throw new TBDriveException("Problem while retrieving files: '" + result.getStatus().getStatusMessage() + "'");         
    }

	Iterator<Metadata> iterator = result.getMetadataBuffer().iterator();            	
	Metadata mData = null;
	while(iterator.hasNext()) {
		mData = iterator.next();
		
		if(!mData.isFolder()){
			driveFile = Drive.DriveApi.getFile(getGoogleApiClient(), mData.getDriveId());
			if(driveFile==null) {
				//Error getting Drive File from id. Should never happen
				Log.e(TAG, "Problem while retrieving file with DriveId: " + mData.getDriveId());
				result.release();
				throw new TBDriveException("Problem while retrieving file with DriveId: " + mData.getDriveId() + ". Not found in Drive!!");
			}         			
		}
		break; //Should only be one.
	}
	result.release();
	
	return driveFile;
}