Java tutorial
/******************************************************************************* * Copyright 2012 Alexandros Schillings * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. ******************************************************************************/ package co.uk.alt236.restclient4android.fragments; import java.util.ArrayList; import android.app.ProgressDialog; import android.os.AsyncTask; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.view.Menu; import android.support.v4.view.MenuItem; import android.text.Html; import android.util.Log; import android.util.Pair; import android.view.LayoutInflater; import android.view.MenuInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TabHost; import android.widget.TabHost.TabSpec; import android.widget.TextView; import co.uk.alt236.restclient4android.R; import co.uk.alt236.restclient4android.RestClient4AndroidApplication; import co.uk.alt236.restclient4android.containers.NetworkRequest; import co.uk.alt236.restclient4android.containers.NetworkResult; import co.uk.alt236.restclient4android.net.Connection; import co.uk.alt236.restclient4android.util.UsefulBits; public class FragmentNetworkResult extends Fragment { private final String TAG = this.getClass().getName(); private final static String TAB_BODY = "tab_body"; private final static String TAB_HEADERS = "tab_headers"; private NetworkRequest mNetworkRequest; private TabHost mTabHost; private TextView mTvResponseCode; private TextView mTvResponseBody; private TextView mTvResponseHeaders; private TextView mTvUrl; @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (RestClient4AndroidApplication.getResult() == null) { (new HttpConnectionTask()).execute(mNetworkRequest); } else { displayNetworkResult(RestClient4AndroidApplication.getResult()); } } @Override public void onCreate(Bundle saved) { super.onCreate(saved); setHasOptionsMenu(true); } public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_export: UsefulBits.share(getActivity(), getActivity().getString(R.string.share_result_title), this.toString()); return true; } return false; } public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.menu_fragment_result, menu); super.onCreateOptionsMenu(menu, inflater); } public FragmentNetworkResult() { } public FragmentNetworkResult(NetworkRequest request) { this.mNetworkRequest = request; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle saved) { View v = inflater.inflate(R.layout.fragment_result, container, false); mTabHost = (TabHost) v.findViewById(android.R.id.tabhost); mTvResponseBody = (TextView) v.findViewById(R.id.tvResponseBody); mTvResponseCode = (TextView) v.findViewById(R.id.tvResponseCode); mTvResponseHeaders = (TextView) v.findViewById(R.id.tvResponseHeaders); mTvUrl = (TextView) v.findViewById(R.id.tvUrl); setupTabs(); return v; } private void setupTabs() { mTabHost.setup(); // you must call this before adding your tabs! mTabHost.addTab(newTab(TAB_BODY, R.string.tab_label_body, R.id.tab_1)); mTabHost.addTab(newTab(TAB_HEADERS, R.string.tab_label_headers, R.id.tab_2)); } private TabSpec newTab(String tag, int labelId, int tabContentId) { TabSpec tabSpec = mTabHost.newTabSpec(tag); tabSpec.setIndicator(getActivity().getString(labelId)); tabSpec.setContent(tabContentId); return tabSpec; } private class HttpConnectionTask extends AsyncTask<NetworkRequest, Integer, NetworkResult> { private ProgressDialog mDialog = new ProgressDialog(getActivity()); @Override protected void onPreExecute() { mDialog.setMessage("Connecting to server..."); mDialog.setCancelable(false); mDialog.show(); } @Override protected NetworkResult doInBackground(NetworkRequest... requests) { Connection connection = new Connection(); return connection.execute(requests[0]); } @Override protected void onPostExecute(NetworkResult result) { RestClient4AndroidApplication.setResult(result); displayNetworkResult(result); if (mDialog != null) { if (mDialog.isShowing()) { mDialog.dismiss(); } mDialog.cancel(); } } } private void displayNetworkResult(NetworkResult data) { if (data != null) { mTvResponseCode.setText(String.valueOf(data.getResponseCode())); mTvUrl.setText(data.getUrl()); displayResultBody(data.getResponseBody()); ArrayList<Pair<String, String>> headers = data.getResponseHeaders(); StringBuffer sb = new StringBuffer(); if (headers != null) { for (Pair<String, String> pair : headers) { sb.append("<b>"); sb.append(pair.first); sb.append("</b>"); sb.append(": "); sb.append(pair.second); sb.append("<br>"); } } mTvResponseHeaders.setText(Html.fromHtml(sb.toString())); } else { Log.e(TAG, "^ displayNetworkResult() Result was null!"); } } private void displayResultBody(String body) { if (body == null) { mTvResponseBody.setText(""); return; } mTvResponseBody.setText(body); } }