android.provider.DocumentsContract#createDocument ( )源码实例Demo

@Override
public void createFolder(String new_name)
{
    try
    {
        Uri new_uri = DocumentsContract.createDocument(ctx.getContentResolver(), uri, Document.MIME_TYPE_DIR,
                new_name);
        if (new_uri != null)
        {
            notifyRefr(new_name);
            return;
        }
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
    notify(ctx.getString(R.string.fman_create_folder_error, new_name), CommanderIf.OPERATION_FAILED);
}
 

@Override
public com.sovworks.eds.fs.Directory createDirectory(String name) throws IOException
{
    Uri uri = DocumentsContract.createDocument(
            _context.getContentResolver(),
            _path.getDocumentUri(),
            DocumentsContract.Document.MIME_TYPE_DIR,
            name
    );
    if(uri == null)
        throw new IOException("Failed creating folder");
    return new Directory(new DocumentPath(uri));
}
 

@Override
public com.sovworks.eds.fs.File createFile(String name) throws IOException
{
    String mimeType = FileOpsService.getMimeTypeFromExtension(_context, new StringPathUtil(name).getFileExtension());
    Uri uri = DocumentsContract.createDocument(
            _context.getContentResolver(),
            _path.getDocumentUri(),
            mimeType, name);
    if(uri == null)
        throw new IOException("Failed creating file");
    return new File(new DocumentPath(uri));
}
 

public static Uri createFile(Context context, Uri self, String mimeType,
        String displayName) {
    try {
        return DocumentsContract.createDocument(context.getContentResolver(), self, mimeType,
                displayName);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
        return null;
    }
}
 

public static Uri createFile(Context context, Uri self, String mimeType,
        String displayName) {
    try {
        return DocumentsContract.createDocument(context.getContentResolver(), self, mimeType,
                displayName);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
        return null;
    }
}
 

public static Uri createFile(Context context, Uri self, String mimeType,
        String displayName) {
    try {
        return DocumentsContract.createDocument(context.getContentResolver(), self, mimeType,
                displayName);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
        return null;
    }
}
 

@Override
public Uri newFile(String fileName)
{
    try
    {
        Uri curr = getUri();
        String mime = FileUtils.getMimeByExt(FileUtils.getFileExt(fileName), "*/*");
        return DocumentsContract.createDocument(ctx.getContentResolver(), curr, mime, fileName);
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
    return null;
}
 

public static Uri createFile(Context context, Uri self, String mimeType,
        String displayName) {
    try {
        return DocumentsContract.createDocument(context.getContentResolver(), self, mimeType,
                displayName);
    } catch (Exception e) {
        // Maybe user ejects tf card
        Log.e(TAG, "Failed to createFile", e);
        return null;
    }
}
 

/**
 * Creates a directory under the directory represented as the uri in the argument.
 *
 * @param uri The uri of the directory under which a new directory is created.
 * @param directoryName The directory name of a new directory.
 */
//VisibileForTesting
void createDirectory(Uri uri, String directoryName) {
    ContentResolver contentResolver = getActivity().getContentResolver();
    Uri docUri = DocumentsContract.buildDocumentUriUsingTree(uri,
            DocumentsContract.getTreeDocumentId(uri));
    Uri directoryUri = null;
    try {
        directoryUri = DocumentsContract
                .createDocument(contentResolver, docUri, Document.MIME_TYPE_DIR, directoryName);
    } catch (IOException e) {
        Log.w(TAG, "IOException", e);
    }
    if (directoryUri != null) {
        Log.i(TAG, String.format(
                "Created directory : %s, Document Uri : %s, Created directory Uri : %s",
                directoryName, docUri, directoryUri));
        Toast.makeText(getActivity(), String.format("Created a directory [%s]",
                directoryName), Toast.LENGTH_SHORT).show();
    } else {
        Log.w(TAG, String.format("Failed to create a directory : %s, Uri %s", directoryName,
                docUri));
        Toast.makeText(getActivity(), String.format("Failed to created a directory [%s] : ",
                directoryName), Toast.LENGTH_SHORT).show();
    }

}
 

public static Uri createFile(Context context, Uri self, String mimeType,
        String displayName) {
    return DocumentsContract.createDocument(context.getContentResolver(), self, mimeType,
            displayName);
}