como atualizar o Ui da tarefa em segundo plano

Question

Oct 02, 2013, 08:22 AM

networkonmainthread androidhttpclient android-asynctask android

como atualizar o Ui da tarefa em segundo plano

Meu aplicativo não está funcionando na versão android 4.1 dá exceção comoandroid.os.NetworkOnMainThreadException

Eu tenho pesquisa no stackoverflow conselhos me para fazer thread de rede no fundoAsyncTask então antes de usar o backgroundtask, minha tela fica assimhttp://imgur.com/PlhS03i mostrar várias linhas em tags de nutrição e ingredientes depois de usar o backgroundtask minha tela se parece com issohttp://imgur.com/zUvxNpy mostrar apenas uma linha em ingredientes e tags nutricionais

antes do código da tarefa de fundo é isso veja abaixo

public class fifthscreen extends Activity {
String num = null;
TextView ingredient;

long Menu_ID;
String dish_name;

String status;

HorizontalListView listview;
CategoryListAdapter3 cla;
String DescriptionAPI;

TextView txt1, txt2, txt3;
ImageView img1;
String URL, URL2;
String SelectMenuAPI;

static ArrayList<Long> Category_ID = new ArrayList<Long>();
static ArrayList<String> Category_name = new ArrayList<String>();
static ArrayList<String> Category_image = new ArrayList<String>();

public static String allergen2;
private AQuery androidAQuery;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fifthscreen);
    ingredient = (TextView) findViewById(R.id.ingredient);
    img1 = (ImageView) findViewById(R.id.test_button_image);

    txt1 = (TextView) findViewById(R.id.menuname);
    txt3 = (TextView) findViewById(R.id.description);

    Intent iGet = getIntent();

    ImageView options = (ImageView) findViewById(R.id.options5);
    androidAQuery = new AQuery(this);

    options.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent iMenuList = new Intent(fifthscreen.this,
                    LinkButtons.class);
            startActivity(iMenuList);
        }
    });

    dish_name = iGet.getStringExtra("dish_name");

    listview = (HorizontalListView) this.findViewById(R.id.listview2);

    cla = new CategoryListAdapter3(fifthscreen.this);
    listview.setAdapter(cla);

    parseJSONData();

}

void clearData() {
    Category_ID.clear();
    Category_name.clear();
    Category_image.clear();

}

public void parseJSONData() {

    SelectMenuAPI = Utils.dishdescription + dish_name;

    clearData();
    URL = SelectMenuAPI;
    URL2 = URL.replace(" ", "%20");

    try {

        HttpClient client = new DefaultHttpClient();
        HttpConnectionParams
                .setConnectionTimeout(client.getParams(), 15000);
        HttpConnectionParams.setSoTimeout(client.getParams(), 15000);
        HttpUriRequest request = new HttpGet(URL2);
        HttpResponse response = client.execute(request);
        InputStream atomInputStream = response.getEntity().getContent();
        BufferedReader in = new BufferedReader(new InputStreamReader(
                atomInputStream));

        String line;
        String str = "";
        while ((line = in.readLine()) != null) {
            str += line;
        }

        JSONObject json2 = new JSONObject(str);

        status = json2.getString("status");
        if (status.equals("1")) {

            JSONArray school2 = json2.getJSONArray("data");

            for (int i = 0; i < school2.length(); i++) {

                String name = school2.getJSONObject(0).getString("name");
                txt1.setText(name);

                String description = school2.getJSONObject(0).getString(
                        "description");

                txt3.setText(description);

                String url1 = school2.getJSONObject(0).getString("image");

                androidAQuery.id(img1).image(url1, false, false);

            }

            JSONObject school3 = json2.getJSONObject("dish_nutrition");

            final TableLayout table = (TableLayout) findViewById(R.id.table2);

            for (int j = 0; j < school3.length(); j++) {

                String s = String.valueOf(j + 1);

                final View row = createRow(school3.getJSONObject(s));
                table.addView(row);

            }

            JSONArray school4 = json2.getJSONArray("dish_allergen");
            //
            for (int i = 0; i < school4.length(); i++) {
                JSONObject object = school4.getJSONObject(i);

                Category_ID.add((long) i);
                Category_name.add(object.getString("name"));
                Category_image.add(object.getString("image"));
                listview.setAdapter(cla);

            }

    final LinearLayout table3 = (LinearLayout) findViewById(R.id.table3);

            JSONArray school5 = json2.getJSONArray("dish_ingredient");

            for (int i = 0; i < school5.length(); i++) {

                final View row2 = createRow2(school5.getJSONObject(i));
                table3.addView(row2);

            }

        }

        else {

            JSONArray school2 = json2.getJSONArray("data");
            for (int i = 0; i < school2.length(); i++) {
                JSONObject object = school2.getJSONObject(i);

                Category_ID.add((long) i);
                Category_name.add(object.getString("name"));

            }

        }

    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        // IOConnect = 1;
        e.printStackTrace();
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

public View createRow(JSONObject item) throws JSONException {
    View row = getLayoutInflater().inflate(R.layout.rows, null);
    ((TextView) row.findViewById(R.id.localTime)).setText(item
            .getString("qty"));
    ((TextView) row.findViewById(R.id.apprentTemp)).setText(item
            .getString("name"));

    return row;
}

public View createRow2(JSONObject item) throws JSONException {

    View row2 = getLayoutInflater().inflate(R.layout.row2, null);
    ((TextView) row2.findViewById(R.id.name)).setText(item
            .getString("name"));
    ((TextView) row2.findViewById(R.id.subingredients)).setText(item
            .getString("sub_ingredients"));

    return row2;
}

    }

Depois de usarAsyncTask veja este código abaixo

 public class fifthscreen extends Activity {
String num = null;
TextView ingredient;

long Menu_ID;
String dish_name;

String status;

HorizontalListView listview;
CategoryListAdapter3 cla;
String DescriptionAPI;

TextView txt1, txt2, txt3;
ImageView img1;
String URL, URL2;
String SelectMenuAPI;
String description;

int IOConnect = 0;
String name;
String url1;
TableLayout table;
LinearLayout table3;
View row;
View row2;

static ArrayList<Long> Category_ID = new ArrayList<Long>();
static ArrayList<String> Category_name = new ArrayList<String>();
static ArrayList<String> Category_image = new ArrayList<String>();
public static String allergen2;
private AQuery androidAQuery;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fifthscreen);
    if (android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
                .permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }
    ingredient = (TextView) findViewById(R.id.ingredient);
    img1 = (ImageView) findViewById(R.id.test_button_image);

    txt1 = (TextView) findViewById(R.id.menuname);
    // txt2 = (TextView) findViewById(R.id.test_button_text1);
    txt3 = (TextView) findViewById(R.id.description);

    table = (TableLayout) findViewById(R.id.table2);
    table3 = (LinearLayout) findViewById(R.id.table3);

    Intent iGet = getIntent();

    ImageView options = (ImageView) findViewById(R.id.options5);
    androidAQuery = new AQuery(this);

    options.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent iMenuList = new Intent(fifthscreen.this,
                    LinkButtons.class);
            startActivity(iMenuList);
        }
    });

    dish_name = iGet.getStringExtra("dish_name");

    listview = (HorizontalListView) this.findViewById(R.id.listview2);

    cla = new CategoryListAdapter3(fifthscreen.this);

    new getDataTask().execute();

    // listview.setAdapter(cla);

    ImageView btnback = (ImageView) findViewById(R.id.btnback);

    btnback.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });

    parseJSONData();

}

void clearData() {
    Category_ID.clear();
    Category_name.clear();
    Category_image.clear();

}

public class getDataTask extends AsyncTask<Void, Void, Void> {

    getDataTask() {

    }

    @Override
    protected void onPreExecute() {
        // TODO Auto-generated method stub

    }

    @Override
    protected Void doInBackground(Void... arg0) {
        // TODO Auto-generated method stub
        parseJSONData();
        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        // TODO Auto-generated method stub
        txt1.setText(name);
         txt3.setText(description);
        androidAQuery.id(img1).image(url1, false, false);

        table.addView(row);
        table3.addView(row2);
        listview.setAdapter(cla);

    }
}

public void parseJSONData() {

    SelectMenuAPI = Utils.dishdescription + dish_name;

    clearData();
    URL = SelectMenuAPI;
    URL2 = URL.replace(" ", "%20");

    try {

        HttpClient client = new DefaultHttpClient();
        HttpConnectionParams
                .setConnectionTimeout(client.getParams(), 15000);
        HttpConnectionParams.setSoTimeout(client.getParams(), 15000);
        HttpUriRequest request = new HttpGet(URL2);
        HttpResponse response = client.execute(request);
        InputStream atomInputStream = response.getEntity().getContent();
        BufferedReader in = new BufferedReader(new InputStreamReader(
                atomInputStream));

        String line;
        String str = "";
        while ((line = in.readLine()) != null) {
            str += line;
        }

        JSONObject json2 = new JSONObject(str);

        status = json2.getString("status");
        if (status.equals("1")) {

            JSONArray school2 = json2.getJSONArray("data");

            for (int i = 0; i < school2.length(); i++) {

                name = school2.getJSONObject(0).getString("name");

                description = school2.getJSONObject(0).getString(
                        "description");

                url1 = school2.getJSONObject(0).getString("image");

            }

            JSONObject school3 = json2.getJSONObject("dish_nutrition");

            for (int j = 0; j < school3.length(); j++) {

                String s = String.valueOf(j + 1);

                row = createRow(school3.getJSONObject(s));

            }

            JSONArray school4 = json2.getJSONArray("dish_allergen");
            //
            for (int i = 0; i < school4.length(); i++) {
                JSONObject object = school4.getJSONObject(i);

                Category_ID.add((long) i);
                Category_name.add(object.getString("name"));
                Category_image.add(object.getString("image"));

            }

            JSONArray school5 = json2.getJSONArray("dish_ingredient");

            for (int i = 0; i < school5.length(); i++) {

                row2 = createRow2(school5.getJSONObject(i));

            }

        }

        else {

            JSONArray school2 = json2.getJSONArray("data");
            for (int i = 0; i < school2.length(); i++) {
                JSONObject object = school2.getJSONObject(i);

                Category_ID.add((long) i);
                Category_name.add(object.getString("name"));

            }

        }

    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        // IOConnect = 1;
        e.printStackTrace();
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

public View createRow(JSONObject item) throws JSONException {
    View row = getLayoutInflater().inflate(R.layout.rows, null);
    ((TextView) row.findViewById(R.id.localTime)).setText(item
            .getString("qty"));
    ((TextView) row.findViewById(R.id.apprentTemp)).setText(item
            .getString("name"));

    return row;
}

public View createRow2(JSONObject item) throws JSONException {

    View row2 = getLayoutInflater().inflate(R.layout.row2, null);
    ((TextView) row2.findViewById(R.id.name)).setText(item
            .getString("name"));
    ((TextView) row2.findViewById(R.id.subingredients)).setText(item
            .getString("sub_ingredients"));

    return row2;
}

 }

Por favor ajude

Desde já, obrigado...:)