我正在尝试使用 oauth2（用于仅应用程序身份验证）从 twitter 获取用户时间线，但结果始终为空。我没有使用 OAUTH 的经验，我查看了一些教程和示例，但到目前为止还没有运气。我需要在用户无需登录的情况下检索特定用户的时间线（在此示例中为 Twitter）。
我有一个使用 twitter API 1 的应用程序，我尝试使用 oauth2 将我现有的代码调整到新的 API 1.1 以进行仅应用程序身份验证。所以代码应该可以工作，除非它没有从 Twitter 得到任何回报。如果我确实得到了结果，那么它应该再次工作。
与 Twitter 的连接是在 asyncop 下的函数 twitterconnect 中建立的。
这是我的代码：
public class TwitterActivity extends Activity {
private ConfigurationBuilder builder;
// twitter consumer key and secret
static String TWITTER_CONSUMER_KEY = "**************";
static String TWITTER_CONSUMER_SECRET = "*************";
// twitter acces token and accestokensecret
static String TWITTER_ACCES_TOKEN = "************";
static String TWITTER_ACCES_TOKEN_SECRET = "************";
ArrayList<Tweet> tweets = new ArrayList<Tweet>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.twitter);
new AsyncOp().execute("test");
}
//Async class...
public class AsyncOp extends AsyncTask<String, Void,List<twitter4j.Status>> {
protected List<twitter4j.Status> doInBackground(String... urls) {
//auth with twitter
List<twitter4j.Status> statuses = null;
try {
Twitter twitter=twitterConnect();
statuses = twitter.getUserTimeline("Twitter");
return statuses;
} catch (Exception ex) {
Log.d("Main.displayTimeline", "" + ex.getMessage());
}
return statuses;
}
protected void onPostExecute(List<twitter4j.Status> statuses) {
try {
String TWITTER="EEE MMM dd HH:mm:ss ZZZZZ yyyy"; SimpleDateFormat sf=new
SimpleDateFormat(TWITTER, Locale.ENGLISH); sf.setLenient(true);
for(int i=0;i<statuses.size();i++){
twitter4j.Status stat = statuses.get(i);
User user=stat.getUser();
Date datePosted=stat.getCreatedAt();
String text=stat.getText();
String name=user.getName();
String profile_image_url=user.getProfileImageURL();
Tweet t =new Tweet(datePosted,text,name,profile_image_url,twitterHumanFriendlyDate(datePosted));
tweets.add(t);
// logcat info
Log.i("date",datePosted.toString());
Log.i("text",text);
Log.i("user",name);
Log.i("userprofilepic",profile_image_url);
Log.i("timeofpost",twitterHumanFriendlyDate(datePosted));
}
ListView listView = (ListView) findViewById(R.id.ListViewId);
listView.setAdapter(new UserItemAdapter(TwitterActivity.this,
R.layout.listitem, tweets));
ProgressBar bar=(ProgressBar) findViewById(R.id.progressBar1);
bar.setVisibility(View.GONE);
} catch
(Exception e) { e.printStackTrace(); } }
}
public class UserItemAdapter extends ArrayAdapter<Tweet> {
private ArrayList<Tweet> tweets;
public UserItemAdapter(Context context, int textViewResourceId,
ArrayList<Tweet> tweets) {
super(context, textViewResourceId, tweets);
this.tweets = tweets;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.listitem, null);
}
Tweet tweet = tweets.get(position);
if (tweet != null) {
TextView username = (TextView) v.findViewById(R.id.username);
TextView message = (TextView) v.findViewById(R.id.message);
ImageView image = (ImageView) v.findViewById(R.id.avatar);
TextView date = (TextView) v.findViewById(R.id.date);
if (username != null) {
username.setText(tweet.username);
}
if (message != null) {
message.setText(tweet.message);
}
if (image != null) {
image.setImageBitmap(getBitmap(tweet.image_url));
}
if (date != null) {
date.setText(tweet.hfdate);
}
}
return v;
}
}
public Bitmap getBitmap(String bitmapUrl) {
try {
URL url = new URL(bitmapUrl);
return BitmapFactory.decodeStream(url.openConnection()
.getInputStream());
} catch (Exception ex) {
return null;
}
}
// build twitter
public Twitter twitterConnect() throws Exception
{
// setup
builder.setOAuthConsumerKey(TWITTER_CONSUMER_KEY).setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET);
OAuth2Token token = new TwitterFactory(builder.build()).getInstance().getOAuth2Token();
// exercise & verify
ConfigurationBuilder cb = new ConfigurationBuilder();
cb.setUseSSL(true);
cb.setApplicationOnlyAuthEnabled(true);
Twitter twitter = new TwitterFactory(cb.build()).getInstance();
twitter.setOAuthConsumer(TWITTER_CONSUMER_KEY, TWITTER_CONSUMER_SECRET);
twitter.setOAuth2Token(token);
return twitter;
}
public String twitterHumanFriendlyDate(Date dateCreated) {
// parse Twitter date
SimpleDateFormat dateFormat = new SimpleDateFormat(
"EEE MMM dd HH:mm:ss ZZZZZ yyyy", Locale.ENGLISH);
dateFormat.setLenient(false);
Date created = dateCreated;
// today
Date today = new Date();
// how much time since (ms)
Long duration = today.getTime() - created.getTime();
long second = 1000;
long minute = second * 60;
long hour = minute * 60;
long day = hour * 24;
if (duration < second * 7) {
return "right now";
}
if (duration < minute) {
int n = (int) Math.floor(duration / second);
return n + " seconds ago";
}
if (duration < minute * 2) {
return "about 1 minute ago";
}
if (duration < hour) {
int n = (int) Math.floor(duration / minute);
return n + " minutes ago";
}
if (duration < hour * 2) {
return "about 1 hour ago";
}
if (duration < day) {
int n = (int) Math.floor(duration / hour);
return n + " hours ago";
}
if (duration > day && duration < day * 2) {
return "yesterday";
}
if (duration < day * 365) {
int n = (int) Math.floor(duration / day);
return n + " days ago";
} else {
return "over a year ago";
}
}
}
我的问题是 oauth 方法吗？或者也许是getusertimeline？如果有人有一些带有 twitter4j 的 oauth2 示例代码或教程，将不胜感激