Probleme beim auslesen einer Webseite

1package com.trgol.trgol;
2
3import java.io.BufferedInputStream;
4import java.io.BufferedReader;
5import java.io.IOException;
6import java.io.InputStream;
7import java.io.InputStreamReader;
8import java.net.HttpURLConnection;
9import java.net.MalformedURLException;
10import java.net.URL;
11
12import android.app.Activity;
13import android.os.Bundle;
14import android.view.Menu;
15import android.widget.TextView;
16
17public class News extends Activity {
18
19
20
21 @Override
22 protected void onCreate(Bundle savedInstanceState) {
23 super.onCreate(savedInstanceState);
24 setContentView(R.layout.news);
25
26 GetContentOfWebsite();
27
28 }
29
30 @Override
31 public boolean onCreateOptionsMenu(Menu menu) {
32 // Inflate the menu; this adds items to the action bar if it is present.
33 getMenuInflater().inflate(R.menu.news, menu);
34 return true;
35 }
36
37 private void GetContentOfWebsite()
38 {
39 TextView firstNews = (TextView)findViewById(R.id.firstNews);
40 HttpURLConnection urlConnection = null;
41
42 try
43 {
44 URL url = new URL(Die Webseite, da ich neu bin darf ich kein Link schreiben);
45 urlConnection = (HttpURLConnection)url.openConnection();
46 InputStream in = new BufferedInputStream(urlConnection.getInputStream());
47 ReadStream(in,firstNews);
48 }
49
50 catch(MalformedURLException e)
51 {
52 e.printStackTrace();
53 }
54
55 catch(IOException e)
56 {
57 e.printStackTrace();
58 }
59
60 finally
61 {
62 if(null!=urlConnection)
63 {
64 urlConnection.disconnect();
65 }
66 }
67
68 }
69
70 private void ReadStream(InputStream in, TextView textView) throws IOException
71 {
72 BufferedReader rd = new BufferedReader(new InputStreamReader(in), 4096);
73 String line;
74 StringBuilder sb = new StringBuilder();
75 while ((line = rd.readLine()) != null)
76 {
77 sb.append(line);
78 }
79 rd.close();
80
81 textView.setText(sb.toString());
82 }
83
84}

108-27 21:10:28.719: E/AndroidRuntime(24792): FATAL EXCEPTION: main
208-27 21:10:28.719: E/AndroidRuntime(24792): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.trgol.trgol/com.trgol.trgol.News}: android.os.NetworkOnMainThreadException
308-27 21:10:28.719: E/AndroidRuntime(24792): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2110)
408-27 21:10:28.719: E/AndroidRuntime(24792): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
508-27 21:10:28.719: E/AndroidRuntime(24792): at android.app.ActivityThread.access$700(ActivityThread.java:140)
608-27 21:10:28.719: E/AndroidRuntime(24792): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
708-27 21:10:28.719: E/AndroidRuntime(24792): at android.os.Handler.dispatchMessage(Handler.java:99)
808-27 21:10:28.719: E/AndroidRuntime(24792): at android.os.Looper.loop(Looper.java:137)
908-27 21:10:28.719: E/AndroidRuntime(24792): at android.app.ActivityThread.main(ActivityThread.java:4921)
1008-27 21:10:28.719: E/AndroidRuntime(24792): at java.lang.reflect.Method.invokeNative(Native Method)
1108-27 21:10:28.719: E/AndroidRuntime(24792): at java.lang.reflect.Method.invoke(Method.java:511)
1208-27 21:10:28.719: E/AndroidRuntime(24792): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
1308-27 21:10:28.719: E/AndroidRuntime(24792): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
1408-27 21:10:28.719: E/AndroidRuntime(24792): at dalvik.system.NativeStart.main(Native Method)
1508-27 21:10:28.719: E/AndroidRuntime(24792): Caused by: android.os.NetworkOnMainThreadException
1608-27 21:10:28.719: E/AndroidRuntime(24792): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1118)
1708-27 21:10:28.719: E/AndroidRuntime(24792): at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
1808-27 21:10:28.719: E/AndroidRuntime(24792): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
1908-27 21:10:28.719: E/AndroidRuntime(24792): at java.net.InetAddress.getAllByName(InetAddress.java:214)
2008-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:70)
2108-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
2208-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:340)
2308-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87)
2408-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
2508-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:315)
2608-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpEngine.connect(HttpEngine.java:310)
2708-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289)
2808-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239)
2908-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273)
3008-27 21:10:28.719: E/AndroidRuntime(24792): at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168)
3108-27 21:10:28.719: E/AndroidRuntime(24792): at com.trgol.trgol.News.GetContentOfWebsite(News.java:46)
3208-27 21:10:28.719: E/AndroidRuntime(24792): at com.trgol.trgol.News.onCreate(News.java:26)
3308-27 21:10:28.719: E/AndroidRuntime(24792): at android.app.Activity.performCreate(Activity.java:5206)
3408-27 21:10:28.719: E/AndroidRuntime(24792): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
3508-27 21:10:28.719: E/AndroidRuntime(24792): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
3608-27 21:10:28.719: E/AndroidRuntime(24792): ... 11 more

1package com.trgol.trgol;
2
3import java.io.BufferedInputStream;
4import java.io.BufferedReader;
5import java.io.IOException;
6import java.io.InputStream;
7import java.io.InputStreamReader;
8import java.net.HttpURLConnection;
9import java.net.MalformedURLException;
10import java.net.URL;
11
12import android.app.Activity;
13import android.os.AsyncTask;
14import android.os.Bundle;
15import android.widget.TextView;
16
17public class News extends Activity {
18
19
20 TextView firstNews = null;
21 @Override
22 protected void onCreate(Bundle savedInstanceState) {
23 super.onCreate(savedInstanceState);
24 setContentView(R.layout.news);
25
26 LoadWebsiteAsync load = new LoadWebsiteAsync();
27 load.execute();
28
29 }
30
31 class LoadWebsiteAsync extends AsyncTask<String, Void, String>
32 {
33 HttpURLConnection urlConnection = null;
34 InputStream in = null;
35
36 @Override
37 protected String doInBackground(String... urls)
38 {
39 try
40 {
41 URL url = new URL("internetseite");
42 urlConnection = (HttpURLConnection)url.openConnection();
43 in = new BufferedInputStream(urlConnection.getInputStream());
44
45 }
46
47 catch(MalformedURLException e)
48 {
49 e.printStackTrace();
50 }
51
52 catch(IOException e)
53 {
54 e.printStackTrace();
55 }
56
57 finally
58 {
59 if(null!=urlConnection)
60 {
61 urlConnection.disconnect();
62 }
63 }
64 return null;
65 }
66
67 @Override
68 protected void onPostExecute(String result)
69 {
70 firstNews = (TextView)findViewById(R.id.firstNews);
71 try
72 {
73 ReadStream(in,firstNews);
74 }
75 catch (IOException e)
76 {
77 e.printStackTrace();
78 }
79 }
80 }
81
82 private void ReadStream(InputStream in, TextView textView) throws IOException
83 {
84 BufferedReader rd = new BufferedReader(new InputStreamReader(in), 4096);
85 String line;
86 StringBuilder sb = new StringBuilder();
87 while ((line = rd.readLine()) != null)
88 {
89 sb.append(line);
90 }
91 rd.close();
92
93 textView.setText(sb.toString());
94 }
95}