CordovaResourceApi.java 文件源码

/**
 * Opens a stream to the given URI.
 * @return Never returns null.
 * @throws Throws an InvalidArgumentException for relative URIs. Relative URIs should be
 *     resolved before being passed into this function.
 * @throws Throws an IOException if the URI cannot be opened.
 */
public OutputStream openOutputStream(Uri uri, boolean append) throws IOException {
    assertBackgroundThread();
    switch (getUriType(uri)) {
        case URI_TYPE_FILE: {
            File localFile = new File(uri.getPath());
            File parent = localFile.getParentFile();
            if (parent != null) {
                parent.mkdirs();
            }
            return new FileOutputStream(localFile, append);
        }
        case URI_TYPE_CONTENT:
        case URI_TYPE_RESOURCE: {
            AssetFileDescriptor assetFd = contentResolver.openAssetFileDescriptor(uri, append ? "wa" : "w");
            return assetFd.createOutputStream();
        }
    }
    throw new FileNotFoundException("URI not supported by CordovaResourceApi: " + uri);
}