我正在做一个应用程序,你写一个单词,一个新的活动打开然后所有的推文都应该出现,但我收到了错误。
我在新活动的主要内部调用方法printTweets
:
并且不用担心我的所有凭据都有效,我已经在java应用程序(不是android)上尝试了代码,它运行良好,我得到了结果。
这是我的代码:
public void printTweets(String q) {
LinearLayout layout = new LinearLayout(this);
setContentView(layout);
layout.setOrientation(LinearLayout.VERTICAL);
ConfigurationBuilder cb = new ConfigurationBuilder();
cb.setDebugEnabled(true)
.setOAuthConsumerKey("xxxxx")
.setOAuthConsumerSecret("xxxxxx")
.setOAuthAccessToken("xxxxxx")
.setOAuthAccessTokenSecret("xxxxx");
TwitterFactory tf = new TwitterFactory(cb.build());
Twitter twitter = tf.getInstance();
Query query = new Query(q);
QueryResult result = null;
do{
try {
result = twitter.search(query);
} catch (TwitterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
List<Status> tweets = result.getTweets();
for (Status tweet : tweets) {
TextView tv=new TextView(getApplicationContext());
tv.setText("@" + tweet.getUser().getScreenName() + ":" + tweet.getText());
layout.addView(tv);
}
} while ((query = result.nextQuery()) != null);
}
这是我的错误:
11-15 01:07:30.890:E / AndroidRuntime(12926):致命异常:主要 11-15 01:07:30.890:E / AndroidRuntime(12926):java.lang.RuntimeException:无法启动活动ComponentInfo {com.example.sentimentmining / com.example.sentimentmining.DisplayResults}:android.os.NetworkOnMainThreadException 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1970) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1995) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.app.ActivityThread.access $ 600(ActivityThread.java:128) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1161) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.os.Handler.dispatchMessage(Handler.java:99) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.os.Looper.loop(Looper.java:137) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.app.ActivityThread.main(ActivityThread.java:4514) 11-15 01:07:30.890:E / AndroidRuntime(12926):at java.lang.reflect.Method.invokeNative(Native Method) 11-15 01:07:30.890:E / AndroidRuntime(12926):at java.lang.reflect.Method.invoke(Method.java:511) 11-15 01:07:30.890:E / AndroidRuntime(12926):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:790) 11-15 01:07:30.890:E / AndroidRuntime(12926):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 11-15 01:07:30.890:E / AndroidRuntime(12926):at dalvik.system.NativeStart.main(Native Method) 11-15 01:07:30.890:E / AndroidRuntime(12926):引起:android.os.NetworkOnMainThreadException 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.os.StrictMode $ AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099) 11-15 01:07:30.890:E / AndroidRuntime(12926):at java.net.InetAddress.lookupHostByName(InetAddress.java:391) 11-15 01:07:30.890:E / AndroidRuntime(12926):at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242) 11-15 01:07:30.890:E / AndroidRuntime(12926):at java.net.InetAddress.getAllByName(InetAddress.java:220) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpConnection。(HttpConnection.java:71) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpConnection。(HttpConnection.java:50) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpConnection $ Address.connect(HttpConnection.java:351) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpConnection.connect(HttpConnection.java:128) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpsURLConnectionImpl $ HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:460) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpsURLConnectionImpl $ HttpsEngine.connect(HttpsURLConnectionImpl.java:432) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:479) 11-15 01:07:30.890:E / AndroidRuntime(12926):at libcore.net.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:133) 11-15 01:07:30.890:E / AndroidRuntime(12926):在twitter4j.internal.http.HttpResponseImpl。(HttpResponseImpl.java:34) 11-15 01:07:30.890:E / AndroidRuntime(12926):在twitter4j.internal.http.HttpClientImpl.request(HttpClientImpl.java:141) 11-15 01:07:30.890:E / AndroidRuntime(12926):在twitter4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java:61) 11-15 01:07:30.890:E / AndroidRuntime(12926):在twitter4j.internal.http.HttpClientWrapper.get(HttpClientWrapper.java:81) 11-15 01:07:30.890:E / AndroidRuntime(12926):在twitter4j.TwitterImpl.get(TwitterImpl.java:1929) 11-15 01:07:30.890:E / AndroidRuntime(12926):在twitter4j.TwitterImpl.search(TwitterImpl.java:306) 11-15 01:07:30.890:E / AndroidRuntime(12926):at com.example.sentimentmining.DisplayResults.printTweets(DisplayResults.java:83) 11-15 01:07:30.890:E / AndroidRuntime(12926):at com.example.sentimentmining.DisplayResults.onCreate(DisplayResults.java:34) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.app.Activity.performCreate(Activity.java:4465) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1053) 11-15 01:07:30.890:E / AndroidRuntime(12926):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1934) 11-15 01:07:30.890:E / AndroidRuntime(12926):... 11更多
如果您还需要更多信息,请告诉我,我会把它给你
答案 0 :(得分:0)
NetworkOnMainThreadException
在清单
中设置此权限 <uses-permission android:name="android.permission.INTERNET" />
使用asyntask
您获得此异常的原因是您尝试在UI线程上执行昂贵的操作,这会显着减慢您的应用程序并导致其强行关闭。您应该将代码包装在AsyncTask(或Thread)中。
或
在进行网络操作之前使用它
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
}