的活动:
class updateTwitterStatus扩展了AsyncTask {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Retos.this);
pDialog.setMessage("Updating to twitter...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... args) {
Log.d("Tweet Text", "> " + args[0]);
String status = args[0];
try {
ConfigurationBuilder builder = new ConfigurationBuilder();
builder.setOAuthConsumerKey(TWITTER_CONSUMER_KEY);
builder.setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET);
String access_token = mSharedPreferences.getString(PREF_KEY_OAUTH_TOKEN, "");
String access_token_secret = mSharedPreferences.getString(PREF_KEY_OAUTH_SECRET, "");
AccessToken accessToken = new AccessToken(access_token, access_token_secret);
Twitter twitter = new TwitterFactory(builder.build()).getInstance(accessToken);
twitter4j.Status response = twitter.updateStatus(status);
Log.d("Status", "> " + response.getText());
} catch (TwitterException e) {
Log.d("Twitter Update Error", e.getMessage());
}
return null;
}
protected void onPostExecute(String file_url) {
pDialog.dismiss();
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(),
"Status tweeted successfully", Toast.LENGTH_SHORT).show();
txtUpdate.setText("");
}
});
}
}
这就是LogCat
06-05 18:00:26.696:E / AndroidRuntime(1516):致命异常:AsyncTask#2 06-05 18:00:26.696:E / AndroidRuntime(1516):java.lang.RuntimeException:执行doInBackground()时发生错误 06-05 18:00:26.696:E / AndroidRuntime(1516):在android.os.AsyncTask $ 3.done(AsyncTask.java:299) 06-05 18:00:26.696:E / AndroidRuntime(1516):at java.util.concurrent.FutureTask $ Sync.innerSetException(FutureTask.java:273) 06-05 18:00:26.696:E / AndroidRuntime(1516):at java.util.concurrent.FutureTask.setException(FutureTask.java:124) 06-05 18:00:26.696:E / AndroidRuntime(1516):at java.util.concurrent.FutureTask $ Sync.innerRun(FutureTask.java:307) 06-05 18:00:26.696:E / AndroidRuntime(1516):at java.util.concurrent.FutureTask.run(FutureTask.java:137) 06-05 18:00:26.696:E / AndroidRuntime(1516):在android.os.AsyncTask $ SerialExecutor $ 1.run(AsyncTask.java:230) 06-05 18:00:26.696:E / AndroidRuntime(1516):at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 06-05 18:00:26.696:E / AndroidRuntime(1516):at java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:569) 06-05 18:00:26.696:E / AndroidRuntime(1516):at java.lang.Thread.run(Thread.java:856) 06-05 18:00:26.696:E / AndroidRuntime(1516):引起:java.lang.NullPointerException 06-05 18:00:26.696:E / AndroidRuntime(1516):at com.example.prueba.Retos $ updateTwitterStatus.doInBackground(Retos.java:145) 06-05 18:00:26.696:E / AndroidRuntime(1516):at com.example.prueba.Retos $ updateTwitterStatus.doInBackground(Retos.java:1) 06-05 18:00:26.696:E / AndroidRuntime(1516):在android.os.AsyncTask $ 2.call(AsyncTask.java:287) 06-05 18:00:26.696:E / AndroidRuntime(1516):at java.util.concurrent.FutureTask $ Sync.innerRun(FutureTask.java:305) 06-05 18:00:26.696:E / AndroidRuntime(1516):... 5 more
答案 0 :(得分:1)
在第145行附近的Retos.java中寻找零点可能性:
com.example.prueba.Retos$updateTwitterStatus.doInBackground(Retos.java:145)