Add UINavigationController to AppRTCMobile.

webrtc/examples/objc/AppRTCMobile/ios/ARDMainView.m

 /*
  *  Copyright 2015 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.
  */
 
@@ skipping 96 matching lines @@
   [_roomText resignFirstResponder];
 }
 
 - (void)updateClearButton {
   _clearButton.hidden = _roomText.text.length == 0;
 }
 
 @end
 
 @implementation ARDMainView {
-  UILabel *_appLabel;
   ARDRoomTextField *_roomText;
   UILabel *_callOptionsLabel;
   UISwitch *_audioOnlySwitch;
   UILabel *_audioOnlyLabel;
   UISwitch *_aecdumpSwitch;
   UILabel *_aecdumpLabel;
   UISwitch *_levelControlSwitch;
   UILabel *_levelControlLabel;
   UISwitch *_loopbackSwitch;
   UILabel *_loopbackLabel;
   UISwitch *_useManualAudioSwitch;
   UILabel *_useManualAudioLabel;
   UIButton *_startCallButton;
   UIButton *_audioLoopButton;
 }
 
 @synthesize delegate = _delegate;
 @synthesize isAudioLoopPlaying = _isAudioLoopPlaying;
 
 - (instancetype)initWithFrame:(CGRect)frame {
   if (self = [super initWithFrame:frame]) {
-    _appLabel = [[UILabel alloc] initWithFrame:CGRectZero];
-    _appLabel.text = @"AppRTCMobile";
-    _appLabel.font = [UIFont fontWithName:@"Roboto" size:34];
-    _appLabel.textColor = [UIColor colorWithWhite:0 alpha:.2];
-    [_appLabel sizeToFit];
-    [self addSubview:_appLabel];
-
     _roomText = [[ARDRoomTextField alloc] initWithFrame:CGRectZero];
     [self addSubview:_roomText];
 
     UIFont *controlFont = [UIFont fontWithName:@"Roboto" size:20];
     UIColor *controlFontColor = [UIColor colorWithWhite:0 alpha:.6];
 
     _callOptionsLabel = [[UILabel alloc] initWithFrame:CGRectZero];
     _callOptionsLabel.text = @"Call Options";
     _callOptionsLabel.font = controlFont;
     _callOptionsLabel.textColor = controlFontColor;
@@ skipping 100 matching lines @@
     return;
   }
   _isAudioLoopPlaying = isAudioLoopPlaying;
   [self updateAudioLoopButton];
 }
 
 - (void)layoutSubviews {
   CGRect bounds = self.bounds;
   CGFloat roomTextWidth = bounds.size.width - 2 * kRoomTextFieldMargin;
   CGFloat roomTextHeight = [_roomText sizeThatFits:bounds.size].height;
-  _roomText.frame = CGRectMake(kRoomTextFieldMargin,
-                               kStatusBarHeight + kRoomTextFieldMargin,
-                               roomTextWidth,
-                               roomTextHeight);
-  _appLabel.center = CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
+  _roomText.frame =
+      CGRectMake(kRoomTextFieldMargin, kRoomTextFieldMargin, roomTextWidth, roomTextHeight);
 
   CGFloat callOptionsLabelTop =
       CGRectGetMaxY(_roomText.frame) + kCallControlMargin * 4;
   _callOptionsLabel.frame = CGRectMake(kCallControlMargin,
                                        callOptionsLabelTop,
                                        _callOptionsLabel.frame.size.width,
                                        _callOptionsLabel.frame.size.height);
 
   CGFloat audioOnlyTop =
       CGRectGetMaxY(_callOptionsLabel.frame) + kCallControlMargin * 2;
@@ skipping 102 matching lines @@
   [_delegate mainView:self
                 didInputRoom:room
                   isLoopback:_loopbackSwitch.isOn
                  isAudioOnly:_audioOnlySwitch.isOn
            shouldMakeAecDump:_aecdumpSwitch.isOn
        shouldUseLevelControl:_levelControlSwitch.isOn
               useManualAudio:_useManualAudioSwitch.isOn];
 }
 
 @end