Java tutorial
/* * Copyright 2014 The WebRTC Project Authors. All rights reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ package org.appspot.apprtc; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.net.Uri; import android.os.Bundle; import android.preference.PreferenceManager; import android.util.Log; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.inputmethod.EditorInfo; import android.webkit.URLUtil; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.EditText; import android.widget.ImageButton; import android.widget.ListView; import android.widget.TextView; import org.json.JSONArray; import org.json.JSONException; import java.util.ArrayList; import java.util.Random; /** * Handles the initial setup where the user selects which room to join. */ public class ConnectActivity extends Activity { private static final String TAG = "ConnectActivity"; private static final int CONNECTION_REQUEST = 1; private static boolean commandLineRun = false; private ImageButton addRoomButton; private ImageButton removeRoomButton; private ImageButton connectButton; private ImageButton connectLoopbackButton; private EditText roomEditText; private ListView roomListView; private SharedPreferences sharedPref; private String keyprefVideoCallEnabled; private String keyprefResolution; private String keyprefFps; private String keyprefCaptureQualitySlider; private String keyprefVideoBitrateType; private String keyprefVideoBitrateValue; private String keyprefVideoCodec; private String keyprefAudioBitrateType; private String keyprefAudioBitrateValue; private String keyprefAudioCodec; private String keyprefHwCodecAcceleration; private String keyprefNoAudioProcessingPipeline; private String keyprefCpuUsageDetection; private String keyprefDisplayHud; private String keyprefRoomServerUrl; private String keyprefRoom; private String keyprefRoomList; private ArrayList<String> roomList; private ArrayAdapter<String> adapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get setting keys. PreferenceManager.setDefaultValues(this, R.xml.preferences, false); sharedPref = PreferenceManager.getDefaultSharedPreferences(this); keyprefVideoCallEnabled = getString(R.string.pref_videocall_key); keyprefResolution = getString(R.string.pref_resolution_key); keyprefFps = getString(R.string.pref_fps_key); keyprefCaptureQualitySlider = getString(R.string.pref_capturequalityslider_key); keyprefVideoBitrateType = getString(R.string.pref_startvideobitrate_key); keyprefVideoBitrateValue = getString(R.string.pref_startvideobitratevalue_key); keyprefVideoCodec = getString(R.string.pref_videocodec_key); keyprefHwCodecAcceleration = getString(R.string.pref_hwcodec_key); keyprefAudioBitrateType = getString(R.string.pref_startaudiobitrate_key); keyprefAudioBitrateValue = getString(R.string.pref_startaudiobitratevalue_key); keyprefAudioCodec = getString(R.string.pref_audiocodec_key); keyprefNoAudioProcessingPipeline = getString(R.string.pref_noaudioprocessing_key); keyprefCpuUsageDetection = getString(R.string.pref_cpu_usage_detection_key); keyprefDisplayHud = getString(R.string.pref_displayhud_key); keyprefRoomServerUrl = getString(R.string.pref_room_server_url_key); keyprefRoom = getString(R.string.pref_room_key); keyprefRoomList = getString(R.string.pref_room_list_key); setContentView(R.layout.activity_connect); roomEditText = (EditText) findViewById(R.id.room_edittext); roomEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() { @Override public boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) { if (i == EditorInfo.IME_ACTION_DONE) { addRoomButton.performClick(); return true; } return false; } }); roomEditText.requestFocus(); roomListView = (ListView) findViewById(R.id.room_listview); roomListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); addRoomButton = (ImageButton) findViewById(R.id.add_room_button); addRoomButton.setOnClickListener(addRoomListener); removeRoomButton = (ImageButton) findViewById(R.id.remove_room_button); removeRoomButton.setOnClickListener(removeRoomListener); connectButton = (ImageButton) findViewById(R.id.connect_button); connectButton.setOnClickListener(connectListener); connectLoopbackButton = (ImageButton) findViewById(R.id.connect_loopback_button); connectLoopbackButton.setOnClickListener(connectListener); // If an implicit VIEW intent is launching the app, go directly to that URL. final Intent intent = getIntent(); if ("android.intent.action.VIEW".equals(intent.getAction()) && !commandLineRun) { commandLineRun = true; boolean loopback = intent.getBooleanExtra(CallActivity.EXTRA_LOOPBACK, false); int runTimeMs = intent.getIntExtra(CallActivity.EXTRA_RUNTIME, 0); String room = sharedPref.getString(keyprefRoom, ""); roomEditText.setText(room); connectToRoom(loopback, runTimeMs); return; } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.connect_menu, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items. if (item.getItemId() == R.id.action_settings) { Intent intent = new Intent(this, SettingsActivity.class); startActivity(intent); return true; } else { return super.onOptionsItemSelected(item); } } @Override public void onPause() { super.onPause(); String room = roomEditText.getText().toString(); String roomListJson = new JSONArray(roomList).toString(); SharedPreferences.Editor editor = sharedPref.edit(); editor.putString(keyprefRoom, room); editor.putString(keyprefRoomList, roomListJson); editor.commit(); } @Override public void onResume() { super.onResume(); String room = sharedPref.getString(keyprefRoom, ""); roomEditText.setText(room); roomList = new ArrayList<String>(); String roomListJson = sharedPref.getString(keyprefRoomList, null); if (roomListJson != null) { try { JSONArray jsonArray = new JSONArray(roomListJson); for (int i = 0; i < jsonArray.length(); i++) { roomList.add(jsonArray.get(i).toString()); } } catch (JSONException e) { Log.e(TAG, "Failed to load room list: " + e.toString()); } } adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, roomList); roomListView.setAdapter(adapter); if (adapter.getCount() > 0) { roomListView.requestFocus(); roomListView.setItemChecked(0, true); } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == CONNECTION_REQUEST && commandLineRun) { Log.d(TAG, "Return: " + resultCode); setResult(resultCode); commandLineRun = false; finish(); } } private final OnClickListener connectListener = new OnClickListener() { @Override public void onClick(View view) { boolean loopback = false; if (view.getId() == R.id.connect_loopback_button) { loopback = true; } commandLineRun = false; connectToRoom(loopback, 0); } }; private void connectToRoom(boolean loopback, int runTimeMs) { // Get room name (random for loopback). String roomId; if (loopback) { roomId = Integer.toString((new Random()).nextInt(100000000)); } else { roomId = getSelectedItem(); if (roomId == null) { roomId = roomEditText.getText().toString(); } } String roomUrl = sharedPref.getString(keyprefRoomServerUrl, getString(R.string.pref_room_server_url_default)); // Video call enabled flag. boolean videoCallEnabled = sharedPref.getBoolean(keyprefVideoCallEnabled, Boolean.valueOf(getString(R.string.pref_videocall_default))); // Get default codecs. String videoCodec = sharedPref.getString(keyprefVideoCodec, getString(R.string.pref_videocodec_default)); String audioCodec = sharedPref.getString(keyprefAudioCodec, getString(R.string.pref_audiocodec_default)); // Check HW codec flag. boolean hwCodec = sharedPref.getBoolean(keyprefHwCodecAcceleration, Boolean.valueOf(getString(R.string.pref_hwcodec_default))); // Check Disable Audio Processing flag. boolean noAudioProcessing = sharedPref.getBoolean(keyprefNoAudioProcessingPipeline, Boolean.valueOf(getString(R.string.pref_noaudioprocessing_default))); // Get video resolution from settings. int videoWidth = 0; int videoHeight = 0; String resolution = sharedPref.getString(keyprefResolution, getString(R.string.pref_resolution_default)); String[] dimensions = resolution.split("[ x]+"); if (dimensions.length == 2) { try { videoWidth = Integer.parseInt(dimensions[0]); videoHeight = Integer.parseInt(dimensions[1]); } catch (NumberFormatException e) { videoWidth = 0; videoHeight = 0; Log.e(TAG, "Wrong video resolution setting: " + resolution); } } // Get camera fps from settings. int cameraFps = 0; String fps = sharedPref.getString(keyprefFps, getString(R.string.pref_fps_default)); String[] fpsValues = fps.split("[ x]+"); if (fpsValues.length == 2) { try { cameraFps = Integer.parseInt(fpsValues[0]); } catch (NumberFormatException e) { Log.e(TAG, "Wrong camera fps setting: " + fps); } } // Check capture quality slider flag. boolean captureQualitySlider = sharedPref.getBoolean(keyprefCaptureQualitySlider, Boolean.valueOf(getString(R.string.pref_capturequalityslider_default))); // Get video and audio start bitrate. int videoStartBitrate = 0; String bitrateTypeDefault = getString(R.string.pref_startvideobitrate_default); String bitrateType = sharedPref.getString(keyprefVideoBitrateType, bitrateTypeDefault); if (!bitrateType.equals(bitrateTypeDefault)) { String bitrateValue = sharedPref.getString(keyprefVideoBitrateValue, getString(R.string.pref_startvideobitratevalue_default)); videoStartBitrate = Integer.parseInt(bitrateValue); } int audioStartBitrate = 0; bitrateTypeDefault = getString(R.string.pref_startaudiobitrate_default); bitrateType = sharedPref.getString(keyprefAudioBitrateType, bitrateTypeDefault); if (!bitrateType.equals(bitrateTypeDefault)) { String bitrateValue = sharedPref.getString(keyprefAudioBitrateValue, getString(R.string.pref_startaudiobitratevalue_default)); audioStartBitrate = Integer.parseInt(bitrateValue); } // Test if CpuOveruseDetection should be disabled. By default is on. boolean cpuOveruseDetection = sharedPref.getBoolean(keyprefCpuUsageDetection, Boolean.valueOf(getString(R.string.pref_cpu_usage_detection_default))); // Check statistics display option. boolean displayHud = sharedPref.getBoolean(keyprefDisplayHud, Boolean.valueOf(getString(R.string.pref_displayhud_default))); // Start AppRTCDemo activity. Log.d(TAG, "Connecting to room " + roomId + " at URL " + roomUrl); if (validateUrl(roomUrl)) { Uri uri = Uri.parse(roomUrl); Intent intent = new Intent(this, CallActivity.class); intent.setData(uri); intent.putExtra(CallActivity.EXTRA_ROOMID, roomId); intent.putExtra(CallActivity.EXTRA_LOOPBACK, loopback); intent.putExtra(CallActivity.EXTRA_VIDEO_CALL, videoCallEnabled); intent.putExtra(CallActivity.EXTRA_VIDEO_WIDTH, videoWidth); intent.putExtra(CallActivity.EXTRA_VIDEO_HEIGHT, videoHeight); intent.putExtra(CallActivity.EXTRA_VIDEO_FPS, cameraFps); intent.putExtra(CallActivity.EXTRA_VIDEO_CAPTUREQUALITYSLIDER_ENABLED, captureQualitySlider); intent.putExtra(CallActivity.EXTRA_VIDEO_BITRATE, videoStartBitrate); intent.putExtra(CallActivity.EXTRA_VIDEOCODEC, videoCodec); intent.putExtra(CallActivity.EXTRA_HWCODEC_ENABLED, hwCodec); intent.putExtra(CallActivity.EXTRA_NOAUDIOPROCESSING_ENABLED, noAudioProcessing); intent.putExtra(CallActivity.EXTRA_AUDIO_BITRATE, audioStartBitrate); intent.putExtra(CallActivity.EXTRA_AUDIOCODEC, audioCodec); intent.putExtra(CallActivity.EXTRA_CPUOVERUSE_DETECTION, cpuOveruseDetection); intent.putExtra(CallActivity.EXTRA_DISPLAY_HUD, displayHud); intent.putExtra(CallActivity.EXTRA_CMDLINE, commandLineRun); intent.putExtra(CallActivity.EXTRA_RUNTIME, runTimeMs); startActivityForResult(intent, CONNECTION_REQUEST); } } private boolean validateUrl(String url) { if (URLUtil.isHttpsUrl(url) || URLUtil.isHttpUrl(url)) { return true; } new AlertDialog.Builder(this).setTitle(getText(R.string.invalid_url_title)) .setMessage(getString(R.string.invalid_url_text, url)).setCancelable(false) .setNeutralButton(R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }).create().show(); return false; } private final OnClickListener addRoomListener = new OnClickListener() { @Override public void onClick(View view) { String newRoom = roomEditText.getText().toString(); if (newRoom.length() > 0 && !roomList.contains(newRoom)) { adapter.add(newRoom); adapter.notifyDataSetChanged(); } } }; private final OnClickListener removeRoomListener = new OnClickListener() { @Override public void onClick(View view) { String selectedRoom = getSelectedItem(); if (selectedRoom != null) { adapter.remove(selectedRoom); adapter.notifyDataSetChanged(); } } }; private String getSelectedItem() { int position = AdapterView.INVALID_POSITION; if (roomListView.getCheckedItemCount() > 0 && adapter.getCount() > 0) { position = roomListView.getCheckedItemPosition(); if (position >= adapter.getCount()) { position = AdapterView.INVALID_POSITION; } } if (position != AdapterView.INVALID_POSITION) { return adapter.getItem(position); } else { return null; } } }