以下代码用于删除文件。

// 创建删除请求。
DeleteObjectRequest delete = new DeleteObjectRequest("<bucketName>", "<objectKey>");
// 异步删除。
OSSAsyncTask deleteTask = oss.asyncDeleteObject(delete, new OSSCompletedCallback<DeleteObjectRequest, DeleteObjectResult>() {
    @Override
    public void onSuccess(DeleteObjectRequest request, DeleteObjectResult result) {
        Log.d("asyncCopyAndDelObject", "success!");
    }

    @Override
    public void onFailure(DeleteObjectRequest request, ClientException clientExcepion, ServiceException serviceException) {
        // 请求异常。
        if (clientExcepion != null) {
            // 本地异常，如网络异常等。
            clientExcepion.printStackTrace();
        }
        if (serviceException != null) {
            // 服务异常。
            Log.e("ErrorCode", serviceException.getErrorCode());
            Log.e("RequestId", serviceException.getRequestId());
            Log.e("HostId", serviceException.getHostId());
            Log.e("RawMessage", serviceException.getRawMessage());
        }
    }
});