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/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.basicnetworking;
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import android.content.Context;
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import android.net.ConnectivityManager;
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import android.net.NetworkInfo;
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import android.os.Bundle;
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import android.support.v4.app.FragmentActivity;
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import android.util.TypedValue;
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import android.view.Menu;
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import android.view.MenuItem;
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import com.example.android.common.logger.Log;
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import com.example.android.common.logger.LogFragment;
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import com.example.android.common.logger.LogWrapper;
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import com.example.android.common.logger.MessageOnlyLogFilter;
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/**
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* Sample application demonstrating how to test whether a device is connected,
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* and if so, whether the connection happens to be wifi or mobile (it could be
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* something else).
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*
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* This sample uses the logging framework to display log output in the log
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* fragment (LogFragment).
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*/
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public class MainActivity extends FragmentActivity {
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public static final String TAG = "Basic Network Demo";
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// Whether there is a Wi-Fi connection.
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private static boolean wifiConnected = false;
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// Whether there is a mobile connection.
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private static boolean mobileConnected = false;
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// Reference to the fragment showing events, so we can clear it with a button
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// as necessary.
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private LogFragment mLogFragment;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.sample_main);
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// Initialize text fragment that displays intro text.
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SimpleTextFragment introFragment = (SimpleTextFragment)
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getSupportFragmentManager().findFragmentById(R.id.intro_fragment);
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introFragment.setText(R.string.intro_message);
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introFragment.getTextView().setTextSize(TypedValue.COMPLEX_UNIT_DIP, 16.0f);
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// Initialize the logging framework.
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initializeLogging();
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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getMenuInflater().inflate(R.menu.main, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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switch (item.getItemId()) {
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// When the user clicks TEST, display the connection status.
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case R.id.test_action:
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checkNetworkConnection();
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return true;
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// Clear the log view fragment.
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case R.id.clear_action:
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mLogFragment.getLogView().setText("");
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return true;
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}
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return false;
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}
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/**
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* Check whether the device is connected, and if so, whether the connection
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* is wifi or mobile (it could be something else).
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*/
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private void checkNetworkConnection() {
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ConnectivityManager connMgr =
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(ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
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NetworkInfo activeInfo = connMgr.getActiveNetworkInfo();
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if (activeInfo != null && activeInfo.isConnected()) {
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wifiConnected = activeInfo.getType() == ConnectivityManager.TYPE_WIFI;
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mobileConnected = activeInfo.getType() == ConnectivityManager.TYPE_MOBILE;
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if(wifiConnected) {
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Log.i(TAG, getString(R.string.wifi_connection));
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} else if (mobileConnected){
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Log.i(TAG, getString(R.string.mobile_connection));
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}
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} else {
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Log.i(TAG, getString(R.string.no_wifi_or_mobile));
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}
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}
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/** Create a chain of targets that will receive log data */
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public void initializeLogging() {
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// Using Log, front-end to the logging chain, emulates
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// android.util.log method signatures.
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// Wraps Android's native log framework
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LogWrapper logWrapper = new LogWrapper();
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Log.setLogNode(logWrapper);
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// A filter that strips out everything except the message text.
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MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
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logWrapper.setNext(msgFilter);
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// On screen logging via a fragment with a TextView.
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mLogFragment =
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(LogFragment) getSupportFragmentManager().findFragmentById(R.id.log_fragment);
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msgFilter.setNext(mLogFragment.getLogView());
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}
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}