이 응용 프로그램은 주 스레드에서 너무 많은 작업을하고있을 수 있습니다.

Question

다음 코드를 사용하여 mysql 데이터베이스에 항목을 추가하고 있습니다. 단추를 클릭하면 데이터를 서버에 업로드하는 비동기 작업이 시작됩니다. 하지만 내가 그것을 실행할 때 "이 응용 프로그램은 LogCat.How에서이 주 응용 프로그램에서 너무 많은 작업을 수행 할 수 있습니다"오류 메시지가 나는이 코드 문제를 해결할 수 있습니다. 감사합니다. 그것은 분명 당신이 게시 로그 캣에 관련이있는 것으로 나타나지 않는 동안

05-08 12:51:26.761: I/Choreographer(762): Skipped 31 frames! The application may be doing too much work on its main thread. 
05-08 12:51:28.632: W/System.err(762): org.apache.http.conn.HttpHostConnectException: "Connection to localhost refused 
05-08 12:51:28.672: W/System.err(762): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:183) 
05-08 12:51:28.672: W/System.err(762): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) 
05-08 12:51:28.712: W/System.err(762): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) 
05-08 12:51:28.712: W/System.err(762): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360) 
05-08 12:51:28.832: W/System.err(762): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555) 
05-08 12:51:28.902: W/System.err(762): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) 
05-08 12:51:29.012: W/System.err(762): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465) 
05-08 12:51:29.072: W/System.err(762): at com.example.androidhive.JSONParser.makeHttpRequest(JSONParser.java:51) 
05-08 12:51:29.072: W/System.err(762): at com.example.androidhive.NewProductActivity$CreateNewProduct.doInBackground(NewProductActivity.java:97) 
05-08 12:51:29.172: W/System.err(762): at com.example.androidhive.NewProductActivity$CreateNewProduct.doInBackground(NewProductActivity.java:1) 
05-08 12:51:29.252: W/System.err(762): at android.os.AsyncTask$2.call(AsyncTask.java:287) 
05-08 12:51:29.312: W/System.err(762): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 
05-08 12:51:29.322: W/System.err(762): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
05-08 12:51:29.342: W/System.err(762): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
05-08 12:51:29.342: W/System.err(762): at java.lang.Thread.run(Thread.java:856) 
05-08 12:51:29.372: W/System.err(762): Caused by: java.net.ConnectException: failed to connect to /127.0.0.1 (port 80): connect failed: ECONNREFUSED (Connection refused) 
05-08 12:51:29.442: W/System.err(762): at libcore.io.IoBridge.connect(IoBridge.java:114) 
05-08 12:51:29.493: W/System.err(762): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192) 
05-08 12:51:29.552: W/System.err(762): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459) 
05-08 12:51:29.552: W/System.err(762): at java.net.Socket.connect(Socket.java:842) 
05-08 12:51:29.572: W/System.err(762): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119) 
05-08 12:51:29.652: W/System.err(762): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144) 
05-08 12:51:29.692: W/System.err(762): ... 14 more 
05-08 12:51:29.763: W/System.err(762): Caused by: libcore.io.ErrnoException: connect failed: ECONNREFUSED (Connection refused) 
05-08 12:51:29.872: W/System.err(762): at libcore.io.Posix.connect(Native Method) 
05-08 12:51:29.872: W/System.err(762): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:85) 
05-08 12:51:29.892: W/System.err(762): at libcore.io.IoBridge.connectErrno(IoBridge.java:127) 
05-08 12:51:29.992: W/System.err(762): at libcore.io.IoBridge.connect(IoBridge.java:112) 
05-08 12:51:29.992: W/System.err(762): ... 19 more 
05-08 12:51:30.102: E/Buffer Error(762): Error converting result java.lang.NullPointerException: lock == null 
05-08 12:51:30.212: E/JSON Parser(762): Error parsing data org.json.JSONException: End of input at character 0 of 
05-08 12:51:30.302: W/dalvikvm(762): threadid=14: thread exiting with uncaught exception (group=0x40a71930) 
05-08 12:51:30.602: E/AndroidRuntime(762): FATAL EXCEPTION: AsyncTask #4 
05-08 12:51:30.602: E/AndroidRuntime(762): java.lang.RuntimeException: An error occured while executing doInBackground() 
05-08 12:51:30.602: E/AndroidRuntime(762): at android.os.AsyncTask$3.done(AsyncTask.java:299) 
05-08 12:51:30.602: E/AndroidRuntime(762): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352) 
05-08 12:51:30.602: E/AndroidRuntime(762): at java.util.concurrent.FutureTask.setException(FutureTask.java:219) 
05-08 12:51:30.602: E/AndroidRuntime(762): at java.util.concurrent.FutureTask.run(FutureTask.java:239) 
05-08 12:51:30.602: E/AndroidRuntime(762): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
05-08 12:51:30.602: E/AndroidRuntime(762): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
05-08 12:51:30.602: E/AndroidRuntime(762): at java.lang.Thread.run(Thread.java:856) 
05-08 12:51:30.602: E/AndroidRuntime(762): Caused by: java.lang.NullPointerException 
05-08 12:51:30.602: E/AndroidRuntime(762): at com.example.androidhive.NewProductActivity$CreateNewProduct.doInBackground(NewProductActivity.java:101)  
05-08 12:51:30.602: E/AndroidRuntime(762): at com.example.androidhive.NewProductActivity$CreateNewProduct.doInBackground(NewProductActivity.java:1) 
05-08 12:51:30.602: E/AndroidRuntime(762): at android.os.AsyncTask$2.call(AsyncTask.java:287) 
05-08 12:51:30.602: E/AndroidRuntime(762): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 
05-08 12:51:30.602: E/AndroidRuntime(762): ... 3 more 
05-08 12:51:32.542: I/Choreographer(762): Skipped 395 frames! The application may be doing too much work on its main thread. 
05-08 12:51:32.752: I/Choreographer(762): Skipped 54 frames! The application may be doing too much work on its main thread. 
05-08 12:51:33.892: I/Choreographer(762): Skipped 295 frames! The application may be doing too much work on its main thread. 
05-08 12:51:34.132: I/Choreographer(762): Skipped 58 frames! The application may be doing too much work on its main thread. 
05-08 12:51:35.762: E/WindowManager(762): Activity com.example.androidhive.NewProductActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40d3d5e0 V.E..... R.....ID 0,0-329,175} that was originally added here 
05-08 12:51:35.762: E/WindowManager(762): android.view.WindowLeaked: Activity com.example.androidhive.NewProductActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{40d3d5e0 V.E..... R.....ID 0,0-329,175} that was originally added here 
05-08 12:51:35.762: E/WindowManager(762): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354) 
05-08 12:51:35.762: E/WindowManager(762): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216) 
05-08 12:51:35.762: E/WindowManager(762): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69) 
05-08 12:51:35.762: E/WindowManager(762): at android.app.Dialog.show(Dialog.java:281) 
05-08 12:51:35.762: E/WindowManager(762): at com.example.androidhive.NewProductActivity$CreateNewProduct.onPreExecute(NewProductActivity.java:78) 
05-08 12:51:35.762: E/WindowManager(762): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586) 
05-08 12:51:35.762: E/WindowManager(762): at android.os.AsyncTask.execute(AsyncTask.java:534) 
05-08 12:51:35.762: E/WindowManager(762): at com.example.androidhive.NewProductActivity$1.onClick(NewProductActivity.java:57) 
05-08 12:51:35.762: E/WindowManager(762): at android.view.View.performClick(View.java:4204) 
05-08 12:51:35.762: E/WindowManager(762): at android.view.View$PerformClick.run(View.java:17355) 
05-08 12:51:35.762: E/WindowManager(762): at android.os.Handler.handleCallback(Handler.java:725) 
05-08 12:51:35.762: E/WindowManager(762): at android.os.Handler.dispatchMessage(Handler.java:92) 
05-08 12:51:35.762: E/WindowManager(762): at android.os.Looper.loop(Looper.java:137) 
05-08 12:51:35.762: E/WindowManager(762): at android.app.ActivityThread.main(ActivityThread.java:5041) 
05-08 12:51:35.762: E/WindowManager(762): at java.lang.reflect.Method.invokeNative(Native Method) 
05-08 12:51:35.762: E/WindowManager(762): at java.lang.reflect.Method.invoke(Method.java:511) 
05-08 12:51:35.762: E/WindowManager(762): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
05-08 12:51:35.762: E/WindowManager(762): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
05-08 12:51:35.762: E/WindowManager(762): at dalvik.system.NativeStart.main(Native Method) 
05-08 12:51:35.812: I/Choreographer(762): Skipped 172 frames! The application may be doing too much work on its main thread. 
05-08 12:51:36.172: I/Process(762): Sending signal. PID: 762 SIG: 9 

Answer 1

하는 코드가 실행 :

JSONObject json = jsonParser.makeHttpRequest(url_create_product, 
      "POST", params); 

public class NewProductActivity extends Activity { 

// Progress Dialog 
private ProgressDialog pDialog; 

JSONParser jsonParser = new JSONParser(); 
EditText inputName; 
EditText inputPrice; 
EditText inputDesc; 

// url to create new product 
private static String url_create_product = "http://localhost/android_connect/create_product.php"; 

// JSON Node names 
private static final String TAG_SUCCESS = "success"; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.add_product); 

    // Edit Text 
    inputName = (EditText) findViewById(R.id.inputName); 
    inputPrice = (EditText) findViewById(R.id.inputPrice); 
    inputDesc = (EditText) findViewById(R.id.inputDesc); 

    // Create button 
    Button btnCreateProduct = (Button) findViewById(R.id.btnCreateProduct); 

    // button click event 
    btnCreateProduct.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View view) { 
      // creating new product in background thread 

      new CreateNewProduct().execute(); 

     } 
    }); 
} 

/** 
* Background Async Task to Create new product 
* */ 
class CreateNewProduct extends AsyncTask<String, String, String> { 

    /** 
    * Before starting background thread Show Progress Dialog 
    * */ 
    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     pDialog = new ProgressDialog(NewProductActivity.this); 
     pDialog.setMessage("Creating Product.."); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(true); 
     pDialog.show(); 
    } 

    /** 
    * Creating product 
    * */ 
    protected String doInBackground(String... args) { 
     String name = inputName.getText().toString(); 
     String price = inputPrice.getText().toString(); 
     String description = inputDesc.getText().toString(); 

     // Building Parameters 
     List<NameValuePair> params = new ArrayList<NameValuePair>(); 
     params.add(new BasicNameValuePair("name", name)); 
     params.add(new BasicNameValuePair("price", price)); 
     params.add(new BasicNameValuePair("description", description)); 

     // getting JSON Object 
     // Note that create product url accepts POST method 
     JSONObject json = jsonParser.makeHttpRequest(url_create_product, 
       "POST", params); 

     // check log cat fro response 
     Log.d("Create Response", json.toString()); 

     // check for success tag 
     try { 
      int success = json.getInt(TAG_SUCCESS); 

      if (success == 1) { 
       // successfully created product 
       Intent i = new Intent(getApplicationContext(), AllProductsActivity.class); 
       startActivity(i); 

       // closing this screen 
       finish(); 
      } else { 
       // failed to create product 
      } 
     } catch (JSONException e) { 
      e.printStackTrace(); 
     } 

     return null; 
    } 

이

는 로그 캣의 출력 코드가 종료됩니다. 또한이 요청이 실패한 것 같습니다 ("localhost에 연결할 수 없음"). 이 요청이 실패하면 뭔가 다른 것이 UI 스레드로 어떻게 든 전달 될 수 있습니다. 어느 쪽이든,이 예외는 아마도 갇혀 있어야하고 더 깨끗하게 처리되어야합니다.