I noticed one interesting thing with my app ( I use Jsoup inside AsyncTask)
After that my app crashed. LogCat is:
12-15 11:16:43.023: I/dalvikvm(371): Could not find method org.jsoup.Jsoup.connect, referenced from method com.example.myexample.MainActivity$MyTask.doInBackground 12-15 11:16:43.033: W/dalvikvm(371): VFY: unable to resolve static method 3462: Lorg/jsoup/Jsoup;.connect (Ljava/lang/String;)Lorg/jsoup/Connection; 12-15 11:16:43.033: D/dalvikvm(371): VFY: replacing opcode 0x71 at 0x0003 12-15 11:16:43.033: D/dalvikvm(371): VFY: dead code 0x0006-000d in Lcom/example/myexample/MainActivity$MyTask;.doInBackground ([Ljava/lang/String;)Ljava/lang/String; 12-15 11:16:43.113: W/dalvikvm(371): threadid=9: thread exiting with uncaught exception (group=0x40015560) 12-15 11:16:43.133: E/AndroidRuntime(371): FATAL EXCEPTION: AsyncTask #1 12-15 11:16:43.133: E/AndroidRuntime(371): java.lang.RuntimeException: An error occured while executing doInBackground() 12-15 11:16:43.133: E/AndroidRuntime(371): at android.os.AsyncTask$3.done(AsyncTask.java:200) 12-15 11:16:43.133: E/AndroidRuntime(371): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274) 12-15 11:16:43.133: E/AndroidRuntime(371): at java.util.concurrent.FutureTask.setException(FutureTask.java:125) 12-15 11:16:43.133: E/AndroidRuntime(371): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308) 12-15 11:16:43.133: E/AndroidRuntime(371): at java.util.concurrent.FutureTask.run(FutureTask.java:138) 12-15 11:16:43.133: E/AndroidRuntime(371): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088) 12-15 11:16:43.133: E/AndroidRuntime(371): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581) 12-15 11:16:43.133: E/AndroidRuntime(371): at java.lang.Thread.run(Thread.java:1019) Fatal exception connected with Async! But I don't understand why My App:
public class MainActivity extends Activity { MyTask mt; TextView tvInfo; String URL="http://en.wikipedia.org/"; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tvInfo = (TextView) findViewById(R.id.tvInfo); } public void onclick(View v) { mt = new MyTask(); mt.execute(URL); } class MyTask extends AsyncTask<String, Void, String> { Document doc; String title=null; String what1=null; @Override protected void onPreExecute() { super.onPreExecute(); tvInfo.setText("Please wait..."); } protected String doInBackground(String... params) { // TimeUnit.SECONDS.sleep(2); String url=params[0]; Document doc; try { doc = Jsoup.connect(url).get(); String what1=doc.title(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return what1; } protected void onPostExecute(String result) { super.onPostExecute(result); tvInfo.setText(result); } } } If I change my code (without JSoup) Async works good:
public class MainActivity extends Activity { MyTask mt; TextView tvInfo; String URL="http://en.wikipedia.org/"; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tvInfo = (TextView) findViewById(R.id.tvInfo); } public void onclick(View v) { mt = new MyTask(); mt.execute(URL); } class MyTask extends AsyncTask<String, Void, String> { Document doc; String title=null; @Override protected void onPreExecute() { super.onPreExecute(); tvInfo.setText("Please wait"); } protected String doInBackground(String... params) { // TimeUnit.SECONDS.sleep(2); String url=params[0]; //doc = Jsoup.connect(url).get(); //String title = doc.title(); // Log.d("AsyncTask doInBackground","URL: " + params[0]); return url; } protected void onPostExecute(String result) { super.onPostExecute(result); tvInfo.setText(result); } } } In TextView I get a Url of Wiki. Please, can anyone help me with this fact. Thank you!
P.S I add permission of internet in Manifest file P.P.S I use JSoup version 1.7.1 (added as external jar file)