如何在android中实现Dropbox？我已经成功实现了API，但仍然无法正常工作

Question

If anyone having the sample program then please provide here it is necessary for implement in our project.

I am new to Android Technology that's I am facing problem.If anybody required the code then I will provide here.

Thanks in advance.

Answer 1

Try this,

String file_name = "/my_file.txt";
String file_path = Environment.getExternalStorageDirectory()
        .getAbsolutePath() + file_name;
AndroidAuthSession session;

public void initDropBox() {

    AppKeyPair appKeys = new AppKeyPair(APP_KEY, APP_SECRET);
    session = new AndroidAuthSession(appKeys);
    mDBApi = new DropboxAPI<AndroidAuthSession>(session);
    mDBApi.getSession().startOAuth2Authentication(ChatActivity.this);

}

Entry response;

public void uploadFile() {
    writeFileContent(file_path);
    File file = new File(file_path);
    FileInputStream inputStream = null;
    try {
        inputStream = new FileInputStream(file);
    } catch (FileNotFoundException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }


    try {
        response = mDBApi.putFile("/my_file.txt", inputStream,
                file.length(), null, null);
        Log.i("DbExampleLog", "The uploaded file's rev is: " + response.rev);
    } catch (DropboxException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();

    }

}
public void downloadFile() {

    File file = new File(file_path);
    FileOutputStream outputStream = null;

    try {
        outputStream = new FileOutputStream(file);
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    DropboxFileInfo info = null;
    try {
        info = mDBApi.getFile("/my_file.txt", null, outputStream, null);



        Log.i("DbExampleLog", "The file's rev is: "
                + info.getMetadata().rev);
    } catch (DropboxException e) {
        // TODO Auto-generated catch block

        e.printStackTrace();
    }

}

@Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        if (mDBApi.getSession().authenticationSuccessful()) {
            try {
                // Required to complete auth, sets the access token on the
                // session

                mDBApi.getSession().finishAuthentication();

            String accessToken = mDBApi.getSession().getOAuth2AccessToken();

            /**
             * You'll need this token again after your app closes, so it's
             * important to save it for future access (though it's not shown
             * here). If you don't, the user will have to re-authenticate
             * every time they use your app. A common way to implement
             * storing keys is through Android's SharedPreferences API.
             */

        } catch (IllegalStateException e) {
            Log.i("DbAuthLog", "Error authenticating", e);
        }
    }
}

->Call uploadFile(...) and downLoadFile(...) method in child thread otherwise it will give you Exception ->For that use AsyncTask and call these above method in doInBackground(...) method .

hope,this will be helpful.Thanks