java如何使用安卓asynchttp库

1 年，1 月 Questions & Answers 568

我正在尝试使用安卓异步http库将文件异步上传到服务器。回调在我调用upload的方法中。但是，我在尝试从AsyncTask类调用该方法时出错。有人能发现a在哪里出错吗？以下是我的上传方法：

public void upload(String title, String genre, String description, String songuri, int accountId) {

    File song = new File(songuri);

    try {
        String url = Uri.parse(getResources().getString(R.string.audio_upload_url))
                .buildUpon()
                .appendQueryParameter("title", title)
                .appendQueryParameter("tags", genre)
                .appendQueryParameter("description", description)
                .appendQueryParameter("accountId", String.valueOf(accountId))
                .build().toString();

        AsyncHttpResponseHandler httpResponseHandler = createHTTPResponseHandler();

        RequestParams params = new RequestParams();
        // this path could be retrieved from library or camera
        //String imageFilePath = "/storage/sdcard/DCIM/Camera/IMG.jpg";
        //params.put("data", new File(imageFilePath));

        params.put("song", song);

        AsyncHttpClient client = new AsyncHttpClient();
        client.post(url, params, httpResponseHandler);
    } catch (IOException e) {
        e.printStackTrace();
    }

}

下面是如何初始化AsyncHttpResponseHandler类

 public AsyncHttpResponseHandler createHTTPResponseHandler() {
    AsyncHttpResponseHandler handler = new AsyncHttpResponseHandler() {
        @Override
        public void onStart() {
            super.onStart();
        }

        @Override
        public void onProgress(int position, int length) {
            super.onProgress(position, length);

            // progressBar.setProgress(position);
            //progressBar.setMax(length);
}


        @Override
        public void onFinish() {
            super.onFinish();
        }

        @Override
        public void onSuccess(int i, Header[] headers, byte[] bytes) {

        }

        @Override
        public void onFailure(int i, Header[] headers, byte[] bytes, Throwable throwable) {

        }

    };

    return handler;
}

在我的AsyncTask类中，这就是我调用upload方法的方式

@Override
    protected UploadFragment doInBackground(UploadFragment... params) {
        String title = titleEt.getText().toString();
        String description = descriptionEt.getText().toString();

        int user_id;
        userdetails = sessionManager.getUserDetails();
        User user = userdetails.get(0);
        user_id = user.getUserid();

        upload(title, "genre", description, songPath, user_id);
        return null;
    }

由于窗口泄漏，我在AsyncTask类的onPreExecute方法的最后一行中得到了错误，这意味着我在执行doInBackground（）方法时得到了错误

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java如何使用安卓asynchttp库

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