링크를 여는 동안 Android 앱이 작동을 멈 춥니 다.

Question

글쎄, 이유는 모르지만 내 앱이 로그인 활동의 제출 버튼을 때릴 때마다 크레이 싱입니다. 메인 활동 ... 잘 작동

내 로그인 활동 :

package de.blender4me.einkaufsliste; 

import android.app.Activity; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

public class LoginActivity extends Activity { 

EditText password; 
EditText username; 
Button submit; 
TextView userPass; 

String usernameString; 
String passwordString; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_login); 

    submit = (Button) findViewById(R.id.buttonSubmitLogin); 
    submit.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      password = (EditText) findViewById(R.id.editTextPassword); 
      passwordString = password.getText().toString(); 

      username = (EditText) findViewById(R.id.editTextUsername); 
      usernameString = username.getText().toString(); 

      userPass = (TextView) findViewById(R.id.textPassUser); 

      LongOperation lo = new LongOperation(); 
      lo.execute(); 
     } 
    }); 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 
    if (id == R.id.action_settings) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 



} 
private class LongOperation extends AsyncTask<Void, Void, String> { 

    private String[] values = null; 

    @Override 
    protected String doInBackground(Void... params) { 
     internetHandler ih = new internetHandler(); 
     values = ih.getList(usernameString,passwordString,"",""); 

     userPass.setText(values[0]); 

     if(!values[0].equalsIgnoreCase("error")&&!values[0].equalsIgnoreCase("401")&&!values[0].equalsIgnoreCase("404")){ 
      userPass.setText("Yep"); 
     }else{ 
      userPass.setText(values[0]); 
     } 

     return null; 
    } 

    @Override 
    protected void onPostExecute(String result) { 
    } 
    } 
} 

내 주요 활동 :

package de.blender4me.einkaufsliste; 

import android.app.Activity; 
import android.app.AlertDialog; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ListView; 


public class MainActivity extends Activity { 

//Widgets 
Button addItem; 
Button loginMenu; 



    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     //listView 
     LongOperation lo = new LongOperation(); 
     lo.execute(); 

     //register Widgets 
     addItem =(Button) findViewById(R.id.addItem); 
     addItem.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       openDialog(); 
      } 
     }); 

     loginMenu = (Button) findViewById(R.id.loginMenu); 
     loginMenu.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       Intent i = new Intent(getApplicationContext(), LoginActivity.class); 
       startActivity(i); 
      } 
     }); 
    } 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.main, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 
    if (id == R.id.action_settings) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 
} 

//Alert 
public void openDialog(){ 
    AlertDialog.Builder alert = new AlertDialog.Builder(this); 

    alert.setTitle("Zur Einkaufsliste hinzufügen"); 
    alert.setMessage(" "); 

    // Set an EditText view to get user input 
    final EditText input = new EditText(this); 
    alert.setView(input); 

    alert.setPositiveButton("Bestätigen", new DialogInterface.OnClickListener() { 
    public void onClick(DialogInterface dialog, int whichButton) { 
     String value = input.getText().toString(); 
     // Do something with value! 
     } 
    }); 

    alert.setNegativeButton("Abbrechen", new DialogInterface.OnClickListener() { 
     public void onClick(DialogInterface dialog, int whichButton) { 
     // Canceled. 
     } 
    }); 

    alert.show(); 
} 

//listView erstellen 
private class LongOperation extends AsyncTask<Void, Void, String> { 

    private String[] values = null; 

    @Override 
    protected String doInBackground(Void... params) { 
     internetHandler ih = new internetHandler(); 
     values = ih.getList("TestUser","TestPass","TestValue",""); 
     return null; 
    } 

    @Override 
    protected void onPostExecute(String result) { 
     //Liste konvertieren 
     ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, 
      R.layout.listview_item, //Genutztes Layout 
      values); //Genutzter Array 

     //listView einstellen 
     ListView list = (ListView) findViewById(R.id.listView); 
     list.setAdapter(adapter); 
    } 

    @Override 
    protected void onPreExecute() {} 

    @Override 
    protected void onProgressUpdate(Void... values) {} 
    } 
} 

내 internetHandler :

package de.blender4me.einkaufsliste; 

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.net.URL; 
import java.util.regex.Pattern; 

public class internetHandler { 

    //Einkaufsplaner-API aufrufen 
     public static String[] getList(String name, String pass, String addValue, String removeValue){ 

      InputStream is = null; 

      try 
      { 
       URL url = new URL("https://einkaufsplaner.blender4me.de/api.php?name="+name+"&pass="+pass+"&addValue="+addValue+"&removeValue="+removeValue); 
       BufferedReader in = new BufferedReader(
       new InputStreamReader(url.openStream())); 

       String Values = null; 

       for(int i = 0; i < 4; ++i){ 
        Values = in.readLine(); 
       } 
       in.close(); 

       String[] List = Values.split(Pattern.quote(";")); 
       return List; 

      } 
      catch (Exception e) { 
       e.printStackTrace(); 
      } 
      finally { 
       if (is != null) 
       try { is.close(); } catch (IOException e) { } 
      } 
      String[] error = {"error"}; 
      return error; 
     } 
} 

,

오류 : 사실

11-07 21:34:29.474: E/Trace(1223): error opening trace file: No such file or directory (2) 11-07 21:34:32.785: D/gralloc_goldfish(1223): Emulator without GPU emulation detected. 11-07 21:34:34.074: D/dalvikvm(1223): GC_CONCURRENT freed 260K, 10% free 7393K/8135K, paused 16ms+15ms, total 59ms 11-07 21:34:39.964: I/Choreographer(1223): Skipped 248 frames! The application may be doing too much work on its main thread. 11-07 21:34:40.504: W/dalvikvm(1223): threadid=12: thread exiting with uncaught exception (group=0x40a13300) 11-07 21:34:40.564: E/AndroidRuntime(1223): FATAL EXCEPTION: AsyncTask #2 11-07 21:34:40.564: E/AndroidRuntime(1223): java.lang.RuntimeException: An error occured while executing doInBackground() 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.os.AsyncTask$3.done(AsyncTask.java:299) 11-07 21:34:40.564: E/AndroidRuntime(1223): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273) 11-07 21:34:40.564: E/AndroidRuntime(1223): at java.util.concurrent.FutureTask.setException(FutureTask.java:124) 11-07 21:34:40.564: E/AndroidRuntime(1223): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307) 11-07 21:34:40.564: E/AndroidRuntime(1223): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 11-07 21:34:40.564: E/AndroidRuntime(1223): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 11-07 21:34:40.564: E/AndroidRuntime(1223): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 11-07 21:34:40.564: E/AndroidRuntime(1223): at java.lang.Thread.run(Thread.java:856) 11-07 21:34:40.564: E/AndroidRuntime(1223): Caused by: android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4609) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:835) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.view.View.requestLayout(View.java:15129) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.view.View.requestLayout(View.java:15129) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.view.View.requestLayout(View.java:15129) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.view.View.requestLayout(View.java:15129) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.widget.RelativeLayout.requestLayout(RelativeLayout.java:292) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.view.View.requestLayout(View.java:15129) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.widget.TextView.checkForRelayout(TextView.java:6309) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.widget.TextView.setText(TextView.java:3547) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.widget.TextView.setText(TextView.java:3405) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.widget.TextView.setText(TextView.java:3380) 11-07 21:34:40.564: E/AndroidRuntime(1223): at de.blender4me.einkaufsliste.LoginActivity$LongOperation.doInBackground(LoginActivity.java:71) 11-07 21:34:40.564: E/AndroidRuntime(1223): at de.blender4me.einkaufsliste.LoginActivity$LongOperation.doInBackground(LoginActivity.java:1) 11-07 21:34:40.564: E/AndroidRuntime(1223): at android.os.AsyncTask$2.call(AsyncTask.java:287) 11-07 21:34:40.564: E/AndroidRuntime(1223): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 11-07 21:34:40.564: E/AndroidRuntime(1223): ... 5 more 11-07 21:34:42.315: I/Process(1223): Sending signal. PID: 1223 SIG: 9

Answer 1

, 당신은이 오류가 발생할 AsyncTask의 doInBackground()에서 응용 프로그램 UI를 업데이트하려고합니다. 당신이 그것에서 안드로이드의 기본 응용 프로그램 UI 스레드에 액세스 할 수 있도록 실행되는

그래서 당신은 onPostExecute()에서 UI 부분을 업데이트해야, 같은 작업자 스레드에서

@Override 
protected String doInBackground(Void... params) { 
    internetHandler ih = new internetHandler(); 
    values = ih.getList(usernameString,passwordString,"",""); 
    return values[0];  
} 

@Override 
protected void onPostExecute(String result) { 
    if(!result.equalsIgnoreCase("error") && !result.equalsIgnoreCase("401") && !result.equalsIgnoreCase("404")){ 
     userPass.setText("Yep"); 
    }else{ 
     userPass.setText(result); 
    } 
} 

doInBackground()로 실행을 코드의 모양을 변경할 UI 스레드에서.