我在android中使用Twitter4j API,当我从twitter浏览器屏幕按回按钮取消授权时,它将我带回到PrepareRequestTokenActivity的onResume()(twitter4j api提供的活动),我正在从onResume完成此活动,但是当授权是成功的,然后它也会转到onResume()然后转到相同活动的onNewIntent()方法,但是活动从恢复完成并且身份验证失败.有没有办法从twitter浏览器屏幕捕获后退按钮？以下是活动.
public class PrepareRequestTokenActivity extends Activity {
public static final String CONSUMER_KEY = "Hr8aDOFeDdY9UbvQB0w2w";
public static final String CONSUMER_SECRET= "wfZOJYkYVEYrmdmltOaKfRdnUfSiUkr2MQdjRUY2xU";
public static final String REQUEST_URL = "http://twitter.com/oauth/request_token"; //"https://api.twitter.com/oauth/request_token"
public static final String ACCESS_URL = "http://twitter.com/oauth/authorize"; //"https://api.twitter.com/oauth/authorize"
public static final String AUTHORIZE_URL = "http://twitter.com/oauth/access_token"; //"https://api.twitter.com/oauth/access_token"
final public static String OAUTH_CALLBACK_SCHEME = "droidnotify-oauth-twitter";
final public static String OAUTH_CALLBACK_URL = OAUTH_CALLBACK_SCHEME + "://callback";
private boolean _debug = false;
private OAuthConsumer _consumer;
private OAuthProvider _provider;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
_debug = Log.getDebug();
if (_debug) Log.v("PrepareRequestTokenActivity.onCreate()");
try {
_consumer = new CommonsHttpOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
//_provider = new CommonsHttpOAuthProvider(REQUEST_URL, ACCESS_URL, AUTHORIZE_URL);
_provider = new DefaultOAuthProvider(REQUEST_URL, ACCESS_URL, AUTHORIZE_URL);
} catch (Exception ex) {
if (_debug) Log.e("PrepareRequestTokenActivity.onCreate() Error creating consumer / provider: " + ex.toString());
}
if (_debug) Log.v("PrepareRequestTokenActivity.onCreate() Starting task to retrieve request token.");
new OAuthRequestTokenTask(this, _consumer, _provider).execute();
}
@Override
public void onNewIntent(Intent intent) {
super.onNewIntent(intent);
if (_debug) Log.v("PrepareRequestTokenActivity.onNewIntent()");
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
final Uri uri = intent.getData();
if (uri != null && uri.getScheme().equals(OAUTH_CALLBACK_SCHEME)) {
if (_debug) Log.v("PrepareRequestTokenActivity.onNewIntent() Callback received : " + uri);
if (_debug) Log.v("PrepareRequestTokenActivity.onNewIntent() Retrieving Access Token");
new RetrieveAccessTokenTask(this, _consumer, _provider, prefs).execute(uri);
finish();
}
}
public class RetrieveAccessTokenTask extends AsyncTask<Uri, Void, Void> {
private Context _context;
private OAuthProvider _provider;
private OAuthConsumer _consumer;
private SharedPreferences _prefs;
public RetrieveAccessTokenTask(Context context, OAuthConsumer consumer,OAuthProvider provider, SharedPreferences prefs) {
_context = context;
_consumer = consumer;
_provider = provider;
_prefs=prefs;
}
@Override
protected Void doInBackground(Uri...params) {
final Uri uri = params[0];
final String oauth_verifier = uri.getQueryParameter(OAuth.OAUTH_VERIFIER);
try {
_provider.retrieveAccessToken(_consumer, oauth_verifier);
final Editor edit = _prefs.edit();
edit.putString(OAuth.OAUTH_TOKEN, _consumer.getToken());
edit.putString(OAuth.OAUTH_TOKEN_SECRET, _consumer.getTokenSecret());
edit.commit();
String token = _prefs.getString(OAuth.OAUTH_TOKEN, "");
String secret = _prefs.getString(OAuth.OAUTH_TOKEN_SECRET, "");
_consumer.setTokenWithSecret(token, secret);
//_context.startActivity(new Intent(_context, AndroidTwitterSample.class));
//executeAfterAccessTokenRetrieval();
Toast.makeText(_context, "Twitter Authentication Successfull", Toast.LENGTH_LONG);
Toast.makeText(_context, "OAuth.OAUTH_TOKEN KEY: " + OAuth.OAUTH_TOKEN + ", OAuth.OAUTH_TOKEN Value: " + _consumer.getToken(), Toast.LENGTH_LONG);
Toast.makeText(_context, "OAuth.OAUTH_TOKEN_SECRET KEY: " + OAuth.OAUTH_TOKEN_SECRET + ", OAuth.OAUTH_TOKEN_SECRET Value: " + _consumer.getTokenSecret(), Toast.LENGTH_LONG);
if (_debug) Log.v("OAuth - Access Token Retrieved");
} catch (Exception ex) {
if (_debug) Log.e("OAuth - Access Token Retrieval Error: " + ex.toString());
}
return null;
}
}
}
解决方法:
只需将一个布尔标志初始化为false,使其在PrepareRequestTokenActivity的onNewIntent()函数中为true,并在onResume函数中添加一个if条件,如果此标志为false则完成活动,如果为true则不执行任何操作,即单击后退按钮时从浏览器它直接转到onResume,此时你的标志将是假的,然后这个活动将完成,当成功或不,谢谢它将首先转到onNewIntent()然后onResume,所以是真的然后活动将不会完成
标签：android,twitter,twitter4j 来源： https://codeday.me/bug/20190630/1332493.html
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