我在Android应用程序中集成了twitter。在这里，我遇到了一些问题。
当我点击twitter登录按钮时，我的应用程序崩溃了，这是我得到的logcat错误。08-13 17:42:06.893: E/AndroidRuntime(9229): FATAL EXCEPTION: AsyncTask #2
08-13 17:42:06.893: E/AndroidRuntime(9229): java.lang.RuntimeException: An error occured while executing doInBackground()
08-13 17:42:06.893: E/AndroidRuntime(9229): at android.os.AsyncTask$3.done(AsyncTask.java:299)
08-13 17:42:06.893: E/AndroidRuntime(9229): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
08-13 17:42:06.893: E/AndroidRuntime(9229): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
08-13 17:42:06.893: E/AndroidRuntime(9229): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
08-13 17:42:06.893: E/AndroidRuntime(9229): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
08-13 17:42:06.893: E/AndroidRuntime(9229): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
08-13 17:42:06.893: E/AndroidRuntime(9229): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
08-13 17:42:06.893: E/AndroidRuntime(9229): at java.lang.Thread.run(Thread.java:841)
08-13 17:42:06.893: E/AndroidRuntime(9229): Caused by: java.lang.NoClassDefFoundError: twitter4j.conf.ConfigurationBuilder
08-13 17:42:06.893: E/AndroidRuntime(9229): at com.example.studentjob.JobFinalPage$LoginToTwitterTask.doInBackground(JobFinalPage.java:173)
08-13 17:42:06.893: E/AndroidRuntime(9229): at com.example.studentjob.JobFinalPage$LoginToTwitterTask.doInBackground(JobFinalPage.java:1)
08-13 17:42:06.893: E/AndroidRuntime(9229): at android.os.AsyncTask$2.call(AsyncTask.java:287)
08-13 17:42:06.893: E/AndroidRuntime(9229): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
08-13 17:42:06.893: E/AndroidRuntime(9229): ... 4 more
08-13 17:42:19.225: D/AbsListView(9229): onVisibilityChanged() is called, visibility : 0
08-13 17:42:19.225: D/AbsListView(9229): unregisterIRListener() is called
08-13 17:42:19.386: E/WindowManager(9229): Activity com.example.studentjob.JobFinalPage has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{4297b660 V.E..... R......D 0,0-464,500} that was originally added here
08-13 17:42:19.386: E/WindowManager(9229): android.view.WindowLeaked: Activity com.example.studentjob.JobFinalPage has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{4297b660 V.E..... R......D 0,0-464,500} that was originally added here
08-13 17:42:19.386: E/WindowManager(9229): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:450)
08-13 17:42:19.386: E/WindowManager(9229): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:258)
08-13 17:42:19.386: E/WindowManager(9229): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:73)
08-13 17:42:19.386: E/WindowManager(9229): at android.app.Dialog.show(Dialog.java:287)
08-13 17:42:19.386: E/WindowManager(9229): at com.example.studentjob.JobFinalPage$LoginToTwitterTask.onPreExecute(JobFinalPage.java:201)
08-13 17:42:19.386: E/WindowManager(9229): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
08-13 17:42:19.386: E/WindowManager(9229): at android.os.AsyncTask.execute(AsyncTask.java:534)
08-13 17:42:19.386: E/WindowManager(9229): at com.example.studentjob.JobFinalPage$1.onClick(JobFinalPage.java:105)
08-13 17:42:19.386: E/WindowManager(9229): at android.view.View.performClick(View.java:4475)
08-13 17:42:19.386: E/WindowManager(9229): at android.view.View$PerformClick.run(View.java:18786)
08-13 17:42:19.386: E/WindowManager(9229): at android.os.Handler.handleCallback(Handler.java:730)
08-13 17:42:19.386: E/WindowManager(9229): at android.os.Handler.dispatchMessage(Handler.java:92)
08-13 17:42:19.386: E/WindowManager(9229): at android.os.Looper.loop(Looper.java:137)
08-13 17:42:19.386: E/WindowManager(9229): at android.app.ActivityThread.main(ActivityThread.java:5419)
08-13 17:42:19.386: E/WindowManager(9229): at java.lang.reflect.Method.invokeNative(Native Method)
08-13 17:42:19.386: E/WindowManager(9229): at java.lang.reflect.Method.invoke(Method.java:525)
08-13 17:42:19.386: E/WindowManager(9229): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)
08-13 17:42:19.386: E/WindowManager(9229): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
08-13 17:42:19.386: E/WindowManager(9229): at dalvik.system.NativeStart.main(Native Method)
08-13 17:42:21.558: I/Process(9229): Sending signal. PID: 9229 SIG: 9
08-13 17:42:21.918: D/AbsListView(9795): Get MotionRecognitionManager
08-13 17:42:21.928: D/AbsListView(9795): Get MotionRecognitionManager
08-13 17:42:21.928: D/AbsListView(9795): Get MotionRecognitionManager
08-13 17:42:21.938: D/AbsListView(9795): Get MotionRecognitionManager
08-13 17:42:21.938: D/AbsListView(9795): Get MotionRecognitionManager
08-13 17:42:22.088: D/libEGL(9795): loaded /vendor/lib/egl/libEGL_adreno.so
08-13 17:42:22.088: D/libEGL(9795): loaded /vendor/lib/egl/libGLESv1_CM_adreno.so
08-13 17:42:22.098: D/libEGL(9795): loaded /vendor/lib/egl/libGLESv2_adreno.so
08-13 17:42:22.098: I/Adreno-EGL(9795): <qeglDrvAPI_eglInitialize:316>: EGL 1.4 QUALCOMM build: (CL4169980)
08-13 17:42:22.098: I/Adreno-EGL(9795): OpenGL ES Shader Compiler Version: 17.01.10.SPL
08-13 17:42:22.098: I/Adreno-EGL(9795): Build Date: 09/26/13 Thu
08-13 17:42:22.098: I/Adreno-EGL(9795): Local Branch:
08-13 17:42:22.098: I/Adreno-EGL(9795): Remote Branch:
08-13 17:42:22.098: I/Adreno-EGL(9795): Local Patches:
08-13 17:42:22.098: I/Adreno-EGL(9795): Reconstruct Branch:
08-13 17:42:22.158: D/OpenGLRenderer(9795): Enabling debug mode 0
以下是代码：
SharedPreferences pref;
Editor editor;
private static SharedPreferences mSharedPreferences;
private static Twitter twitter;
private static RequestToken requestToken;
public final String consumer_key = "z2E7ISesmQsjDRah5qFA";
public final String secret_key = "IcJHyb74pYhOUupkbO7Vez5a0VxJ4aHiYOviQUDMk4";
// Preference Constants
static String PREFERENCE_NAME = "twitter_oauth";
static final String PREF_KEY_OAUTH_TOKEN = "oauth_token";
static final String PREF_KEY_OAUTH_SECRET = "oauth_token_secret";
static final String URL_TWITTER_AUTH = "https://api.twitter.com/oauth/authorize";
static final String URL_TWITTER_OAUTH_VERIFIER = "oauth_verifier";
static final String URL_TWITTER_OAUTH_TOKEN = "oauth_token";
String resgid,prelocation,prefdescription,prefjurl;
SharedPreferences preferences;
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.jobdetails);
Intent intent=getIntent();
tittle=intent.getStringExtra("usertittle");
userdescription=intent.getStringExtra("userdescription");
joburl=intent.getStringExtra("joburl");
location=intent.getStringExtra("location");
if(tittle!=null)
{
preferences = getSharedPreferences("m_key",MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("tittle", tittle);
editor.putString("description", userdescription);
editor.putString("location", location);
editor.putString("jurl", joburl);
editor.commit();
}
SharedPreferences myPrefs = getSharedPreferences("m_key",
MODE_WORLD_READABLE);
resgid = myPrefs.getString("tittle",null);
prelocation=myPrefs.getString("location",null);
prefdescription=myPrefs.getString("description",null);
prefjurl=myPrefs.getString("jurl",null);
title=(TextView) findViewById(R.id.comapnyname);
description=(TextView) findViewById(R.id.description);
locationtext=(TextView) findViewById(R.id.locationname);
company=(TextView) findViewById(R.id.tittlename);
twit=(ImageButton) findViewById(R.id.twitter);
jobshare=(ImageButton) findViewById(R.id.share);
if(tittle!=null){
company.setText(tittle);
title.setText("N/A");
description.setText(userdescription);
locationtext.setText(location);
}else{
company.setText(resgid);
title.setText("N/A");
description.setText(prefdescription);
locationtext.setText(prelocation);
}
mSharedPreferences = getSharedPreferences("twitter_oauth", MODE_PRIVATE);
twit.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
//Intent intent=new Intent(getApplicationContext(),JobResult.class);
//startActivity(intent);
if(isConnected())
{
twit.setImageResource(R.drawable.sharetwitterselected);
}else{
twit.setImageResource(R.drawable.sharetwitterselected);
LoginToTwitterTask login = new LoginToTwitterTask();
login.execute();
}
}
});
jobshare.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v)
{
Uri uri = getIntent().getData();
HandleOuthCallBack hc = new HandleOuthCallBack();
hc.execute(uri);
try
{
String Sharetext=resgid+"\nJob URL :"+prefjurl+"\nPosted By \n Student Job. ";
new updateTwitterStatus().execute(Sharetext);
}
catch (Exception e)
{
e.printStackTrace();
}
}
});
}
private boolean isConnected()
{
return mSharedPreferences.getString("oauth_token", null) != null;
}
private class HandleOuthCallBack extends AsyncTask<Object, Void, Void> {
@Override
protected Void doInBackground(Object... params) {
try{
Uri uri = (Uri) params[0];
String verifier = uri.getQueryParameter("oauth_verifier");
AccessToken accessToken = twitter.getOAuthAccessToken(requestToken, verifier);
Editor e = mSharedPreferences.edit();
e.putString("oauth_token", accessToken.getToken());
e.putString("oauth_token_secret", accessToken.getTokenSecret());
e.commit();
}catch(Exception e)
{
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
}
@Override
protected void onPreExecute() {
}
}
ProgressDialog dialog;
private class LoginToTwitterTask extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... params) {
try{
ConfigurationBuilder configurationBuilder = new ConfigurationBuilder();
configurationBuilder.setOAuthConsumerKey("z2E7ISesmQsjDRah5qFA");
configurationBuilder.setOAuthConsumerSecret("IcJHyb74pYhOUupkbO7Vez5a0VxJ4aHiYOviQUDMk4");
Configuration configuration = configurationBuilder.build();
twitter = new TwitterFactory(configuration).getInstance();
requestToken = twitter.getOAuthRequestToken("oauth://StudentJob");
dialog.dismiss();
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(requestToken.getAuthenticationURL()));
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
getApplicationContext().startActivity(intent);
}catch(Exception e){
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result)
{
super.onPostExecute(result);
}
@Override
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(JobFinalPage.this);
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
dialog.setMax(100);
dialog.setTitle("Loading ..");
dialog.show();
}
}
class updateTwitterStatus extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute()
{
super.onPreExecute();
}
/**
* getting Places JSON
* */
protected String doInBackground(String... args) {
String status = args[0];
try
{
ConfigurationBuilder builder = new ConfigurationBuilder();
builder.setOAuthConsumerKey("z2E7ISesmQsjDRah5qFA");
builder.setOAuthConsumerSecret("IcJHyb74pYhOUupkbO7Vez5a0VxJ4aHiYOviQUDMk4");
// Access Token
try{
String access_token = mSharedPreferences.getString("oauth_token", "");
// Access Token Secret
String access_token_secret = mSharedPreferences.getString("oauth_token_secret", "");
AccessToken accessToken = new AccessToken(access_token, access_token_secret);
Twitter twitter = new TwitterFactory(builder.build()).getInstance(accessToken);
}
catch(Exception e)
{
e.printStackTrace();
}
// Update status
twitter4j.Status response = twitter.updateStatus(status);
} catch (TwitterException e) {
// Error in updating status
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog and show
* the data in UI Always use runOnUiThread(new Runnable()) to update UI
* from background thread, otherwise you will get error
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
// updating UI from Background Thread
runOnUiThread(new Runnable() {
@Override
public void run()
{
Toast.makeText(getApplicationContext(),
"Status tweeted successfully", Toast.LENGTH_SHORT).show();
}
});
}
有人可以帮我吗？
答案 0 :(得分：0)
在上一次完成之前，你无法启动另一个AsyncTask。所以检查HandleOuthCallBack是否完成，然后启动你的登录任务。