Add prebuilt browseable samples as static files.

Change-Id: Ifb5382223343400882834d2dd9c182c3df602e34

samples/browseable/NetworkConnect/src/com.example.android.networkconnect/MainActivity.java

@@ -0,0 +1,189 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * 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 com.example.android.networkconnect;
+
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+import android.util.TypedValue;
+import android.view.Menu;
+import android.view.MenuItem;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogFragment;
+import com.example.android.common.logger.LogWrapper;
+import com.example.android.common.logger.MessageOnlyLogFilter;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.io.UnsupportedEncodingException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+/**
+ * Sample application demonstrating how to connect to the network and fetch raw
+ * HTML. It uses AsyncTask to do the fetch on a background thread. To establish
+ * the network connection, it uses HttpURLConnection.
+ *
+ * This sample uses the logging framework to display log output in the log
+ * fragment (LogFragment).
+ */
+public class MainActivity extends FragmentActivity {
+
+    public static final String TAG = "Network Connect";
+
+    // Reference to the fragment showing events, so we can clear it with a button
+    // as necessary.
+    private LogFragment mLogFragment;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.sample_main);
+
+        // Initialize text fragment that displays intro text.
+        SimpleTextFragment introFragment = (SimpleTextFragment)
+                    getSupportFragmentManager().findFragmentById(R.id.intro_fragment);
+        introFragment.setText(R.string.welcome_message);
+        introFragment.getTextView().setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16.0f);
+
+        // Initialize the logging framework.
+        initializeLogging();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            // When the user clicks FETCH, fetch the first 500 characters of
+            // raw HTML from www.google.com.
+            case R.id.fetch_action:
+                new DownloadTask().execute("http://www.google.com");
+                return true;
+            // Clear the log view fragment.
+            case R.id.clear_action:
+              mLogFragment.getLogView().setText("");
+              return true;
+        }
+        return false;
+    }
+
+    /**
+     * Implementation of AsyncTask, to fetch the data in the background away from
+     * the UI thread.
+     */
+    private class DownloadTask extends AsyncTask<String, Void, String> {
+
+        @Override
+        protected String doInBackground(String... urls) {
+            try {
+                return loadFromNetwork(urls[0]);
+            } catch (IOException e) {
+              return getString(R.string.connection_error);
+            }
+        }
+
+        /**
+         * Uses the logging framework to display the output of the fetch
+         * operation in the log fragment.
+         */
+        @Override
+        protected void onPostExecute(String result) {
+          Log.i(TAG, result);
+        }
+    }
+
+    /** Initiates the fetch operation. */
+    private String loadFromNetwork(String urlString) throws IOException {
+        InputStream stream = null;
+        String str ="";
+
+        try {
+            stream = downloadUrl(urlString);
+            str = readIt(stream, 500);
+       } finally {
+           if (stream != null) {
+               stream.close();
+            }
+        }
+        return str;
+    }
+
+    /**
+     * Given a string representation of a URL, sets up a connection and gets
+     * an input stream.
+     * @param urlString A string representation of a URL.
+     * @return An InputStream retrieved from a successful HttpURLConnection.
+     * @throws java.io.IOException
+     */
+    private InputStream downloadUrl(String urlString) throws IOException {
+        // BEGIN_INCLUDE(get_inputstream)
+        URL url = new URL(urlString);
+        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+        conn.setReadTimeout(10000 /* milliseconds */);
+        conn.setConnectTimeout(15000 /* milliseconds */);
+        conn.setRequestMethod("GET");
+        conn.setDoInput(true);
+        // Start the query
+        conn.connect();
+        InputStream stream = conn.getInputStream();
+        return stream;
+        // END_INCLUDE(get_inputstream)
+    }
+
+    /** Reads an InputStream and converts it to a String.
+     * @param stream InputStream containing HTML from targeted site.
+     * @param len Length of string that this method returns.
+     * @return String concatenated according to len parameter.
+     * @throws java.io.IOException
+     * @throws java.io.UnsupportedEncodingException
+     */
+    private String readIt(InputStream stream, int len) throws IOException, UnsupportedEncodingException {
+        Reader reader = null;
+        reader = new InputStreamReader(stream, "UTF-8");
+        char[] buffer = new char[len];
+        reader.read(buffer);
+        return new String(buffer);
+    }
+
+    /** Create a chain of targets that will receive log data */
+    public void initializeLogging() {
+
+        // Using Log, front-end to the logging chain, emulates
+        // android.util.log method signatures.
+
+        // Wraps Android's native log framework
+        LogWrapper logWrapper = new LogWrapper();
+        Log.setLogNode(logWrapper);
+
+        // A filter that strips out everything except the message text.
+        MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
+        logWrapper.setNext(msgFilter);
+
+        // On screen logging via a fragment with a TextView.
+        mLogFragment =
+                (LogFragment) getSupportFragmentManager().findFragmentById(R.id.log_fragment);
+        msgFilter.setNext(mLogFragment.getLogView());
+    }
+}