Call Async http RESTful Api Example(LoopJ)

SampleCode.java

public class ListActivity extends AppCompatActivity {
    Toolbar toolbar;
    Functions function;
    SharedPreferences Pref;
    ArrayList<myModel> CArrayList = new ArrayList<myModel>();
    RecyclerView recyclerViewCar;
    StringEntity entity = null;
    AsyncHttpClient client;
    JSONObject objSend;
    Intent i;
    String customer_id;
    RelativeLayout ivBack;
    TextView txtTitle;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.car_list);
        function = new Functions(ListActivity.this);
        Pref = getSharedPreferences(getResources().getString(R.string.app_name), MODE_PRIVATE);
        // Drawer.displayDrawer(CustomerDetailsActivity.this);
        toolbar = (Toolbar) findViewById(R.id.toolbar);
        toolbar.setTitle(getResources().getString(R.string.act));
        ivBack = (RelativeLayout) findViewById(R.id.imgback);
        txtTitle = (TextView) findViewById(R.id.txttitle);
        txtTitle.setText(getResources().getString(R.string.car));
        //toolbar.setNavigationIcon(R.mipmap.drawer);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayShowTitleEnabled(true);
        getSupportActionBar().setDefaultDisplayHomeAsUpEnabled(false);
        recyclerViewCar = (RecyclerView) findViewById(R.id.rc_car);
        recyclerViewCar.setHasFixedSize(true);
        LinearLayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
        recyclerViewCar.setLayoutManager(layoutManager);
        i = getIntent();
        if (i.getExtras() != null) {
            customer_id = i.getStringExtra(Constr.Tag_customer_id);
        }
        if (function.isOnline(toolbar, R.string.internet_not_available)) {
            getSelldata(customer_id);
        }
        ivBack.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                onBackPressed();
            }
        });
    }


    public void getdata(final String customerid) {
        function.show();
        JSONObject get_JSONObject = function.request_json();
        try {
            objSend = new JSONObject(get_JSONObject.toString());
            objSend.put("txtuserid", customerid);
            objSend.put("user_type", "SPA");
            objSend.put("txt_id", function.getUserId());
            Log.e("paramSellistCustomerid", objSend.toString().trim());
        } catch (JSONException e) {
            e.printStackTrace();
        }
        try {
            entity = new StringEntity(objSend.toString());
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        client = new AsyncHttpClient();
        client.setTimeout(30 * 1000);
        client.setMaxConnections(6);
client.post(getApplicationContext(), Constr.GETLIST, entity, "application/json", new TextHttpResponseHandler() {
@Override
public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) {
if (responseString != null) {
Toast.makeText(getApplicationContext(), "Fail to load data", Toast.LENGTH_LONG).show();
}
 function.dismiss();
}
 @Override
 public void onSuccess(int statusCode, Header[] headers, String responseString) {
 if (statusCode == 200 && responseString != null) {
     Log.e("onSuccess", responseString);
     try {
     JSONObject json = new JSONObject(responseString);
     int success = json.getInt(Constr.TAG_SUCCESS);
     if (success == 1) {
      JSONArray arrList = json.getJSONArray("allnewdata");
      for (int i = 0; i < arrList.length(); i++) {
      JSONObject c = arrList.getJSONObject(i);
       myModel obj = new myModel();
        obj.set_no(c.getString(Constr.Tag_no).trim());
         obj.set_pic(c.getString(Constr.Tag_act_pic).trim());
              if (c != null) {
                  JSONArray all_jsondata = c.getJSONArray(Constr.Tag_jsonarrayname);
                   if (all_jsondata != null) {
                 for (int j = 0; j < all_jsondata.length(); j++) {
                JSONObject objData = all_jsondata.getJSONObject(j);
               obj.setCl_id(objData.getString(Constr.Tag_cl_id).trim());
               obj.setCl_id(objData.getString(Constr.Tag_cl_details_pid).trim());
               obj.setCl_name(objData.getString(Constr.Tag_cl_pname).trim());
               obj.setCl_desc(objData.getString(Constr.Tag_cl_pdesc).trim());
               obj.setClperson_id(objData.getString(Constr.Tag_cl_sid).trim());
               obj.setCl_customer_id(objData.getString(Constr.Tag_cl_custid).trim());
               obj.setCl_customer_name(objData.getString(Constr.Tag_cl_custname).trim());
               obj.setCl_customer_email(objData.getString(Constr.Tag_cl_custemail).trim());
               //get JSONArray in response
               obj.setSellplanpkgdata(objData.getJSONArray(Constr.Tag_jsonArrayData));
               /*if (objData != null) {
                   JSONArray all_Sdata = objData.getJSONArray(Constr.Tag_jsonArrayData);
                   if (all_sellobjSjData != null) {
                       for (int k = 0; k < all_Sdata.length(); k++) {
                        JSONObject objSjData = all_sellobjSjData.getJSONObject(k);
                        obj.setCssellsdetails_id(objSjData.getString(Constr.Tag_cldetails_id).trim());
                           obj.setCl_id(objSjData.getString(Constr.Tag_cl_id).trim());
                           obj.setClsdetails_prod_qty(objSjData.getString(Constr.Tag_cs_ssdetails_total_qty).trim());
                           obj.setClsdetails_pused_qty(objSjData.getString(Constr.Tag_cs_sdetails_used_qty).trim());
                       }
                   }
               }*/
               CArrayList.add(obj);
           }
         }
        }
       }
      }
                        if (CArrayList.size() > 0) {
                            CAdapter adapter = new CarAdapter(ListActivity.this, CArrayList);
                            recyclerViewCar.setAdapter(adapter);
                        }
                        function.dismiss();
      } catch (JSONException e) {
          e.printStackTrace();
      }
     }
    }
   });
  }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                if (Drawer.mDrawerLayout.isDrawerOpen(Drawer.flDrawerRl)) {
                    Drawer.mDrawerLayout.closeDrawers();
                } else {
                    Drawer.mDrawerLayout.openDrawer(Drawer.flDrawerRl);
                }
                break;
            default:
                break;
        }
        return super.onOptionsItemSelected(item);
    }
}
build.gradle
apply plugin: 'com.android.application'
android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.andy"
        minSdkVersion 11
        targetSdkVersion 20
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.1.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
    testCompile 'junit:junit:4.12'
    compile 'com.loopj.android:android-async-http:1.4.9'
    compile 'com.android.support:support-v4:25.2.0'
    compile 'com.android.support:recyclerview-v7:25.2.0'
    compile 'com.android.support:design:25.2.0'
    compile 'com.squareup.picasso:picasso:2.5.2'
    compile files('libs/httpmime-4.0.3.jar')
    compile 'org.jbundle.util.osgi.wrapped:org.jbundle.util.osgi.wrapped.org.apache.http.client:4.1.2'
    compile files('libs/apache-mime4j-0.6.jar')
    compile 'com.nineoldandroids:library:2.4.0+'
    compile 'com.android.support:cardview-v7:25+'
    //compile 'com.theartofdev.edmodo:android-image-cropper:2.4.+'
    //compile 'com.android.support:cardview-v7:26.0.0-alpha1'
}