Adds NearbyConectionsExample xcode project with README how to guide to build example project.

PiperOrigin-RevId: 409963391
2026-09-16 07:36:10 -04:00 · 2021-11-15 06:34:02 -08:00
parent 363c247eb0
commit 0175a98098
14 changed files with 1178 additions and 0 deletions
@@ -0,0 +1,34 @@
+//
+// Copyright (c) 2021 Google Inc.
+//
+//  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.
+//
+//  AppDelegate.h
+//  NearbyConnectionsExample
+//
+
+#import <UIKit/UIKit.h>
+
+/**
+ * A delegate for NSApplication to handle notifications about app launch and
+ * shutdown. Owned by the application object.
+ */
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+
+/**
+ * Main screen window displayed to the user which contains any active view
+ * hierarchy.
+ */
+@property(nonatomic) UIWindow *window;
+
+@end
@@ -0,0 +1,23 @@
+//
+// Copyright (c) 2021 Google Inc.
+//
+//  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.
+//
+//  AppDelegate.m
+//  NearbyConnectionsExample
+//
+
+#import "AppDelegate.h"
+
+@implementation AppDelegate
+@end
@@ -0,0 +1,98 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "83.5x83.5",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" systemVersion="17A277" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14113" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="fos-Uz-R9B">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14088"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="BVh-fg-s4x">
+            <objects>
+                <viewController id="Tuj-3T-cB2" customClass="ViewController" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="9NC-2J-1xS">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                        <viewLayoutGuide key="safeArea" id="wwJ-gb-kZn"/>
+                    </view>
+                    <navigationItem key="navigationItem" id="ega-4i-ebx"/>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="xJQ-q8-wWg" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="433" y="-133"/>
+        </scene>
+        <!--Navigation Controller-->
+        <scene sceneID="Jcj-tp-czJ">
+            <objects>
+                <navigationController id="fos-Uz-R9B" sceneMemberID="viewController">
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" id="x6x-US-muI">
+                        <rect key="frame" x="0.0" y="20" width="375" height="44"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </navigationBar>
+                    <connections>
+                        <segue destination="Tuj-3T-cB2" kind="relationship" relationship="rootViewController" id="Xa2-HD-mUn"/>
+                    </connections>
+                </navigationController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="99I-fh-ObP" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="-455" y="-132"/>
+        </scene>
+    </scenes>
+</document>
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+  <key>NSLocalNetworkUsageDescription</key>
+  <string>Exchange data with nearby devices running the NearbyConnectionsExmaple app.</string>
+  <key>NSBonjourServices</key>
+  <array>
+    <string>_54167B379724._tcp</string>
+  </array>
+</dict>
+</plist>
@@ -0,0 +1,24 @@
+//
+// Copyright (c) 2021 Google Inc.
+//
+//  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.
+//
+//  ViewController.h
+//  NearbyConnectionsExample
+//
+
+#import <UIKit/UIKit.h>
+
+/** View controller for demo by loading NearbyConnections lib for advertiser and discoverer. */
+@interface ViewController : UIViewController
+@end
@@ -0,0 +1,291 @@
+//
+// Copyright (c) 2021 Google Inc.
+//
+//  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.
+//
+//  ViewController.m
+//  NearbyConnectionsExample
+//
+
+#import "ViewController.h"
+
+#import <NearbyConnections/NearbyConnections.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+static NSString *kServiceId = @"com.google.NearbyConnectionsExample";
+static NSString *kCellIdentifier = @"endpointCell";
+
+// Simplified version of dispatch_after.
+void delay(NSTimeInterval delay, dispatch_block_t block) {
+  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delay * NSEC_PER_SEC)),
+                 dispatch_get_main_queue(), block);
+}
+
+// This class contains info about a discovered endpoint.
+@interface EndpointInfo : NSObject
+@property(nonatomic, readonly) id<GNCDiscoveredEndpointInfo> discInfo;
+@property(nonatomic, nullable) id<GNCConnection> connection;
+@end
+
+@implementation EndpointInfo
+- (instancetype)initWithDiscoveredInfo:(id<GNCDiscoveredEndpointInfo>)discInfo {
+  self = [super init];
+  if (self) {
+    _discInfo = discInfo;
+  }
+  return self;
+}
+@end
+
+@interface ViewController () <UITableViewDataSource, UITableViewDelegate>
+@property(nonatomic) GNCAdvertiser *advertiser;
+@property(nonatomic) GNCDiscoverer *discoverer;
+@property(nonatomic) NSMutableDictionary<GNCEndpointId, EndpointInfo *> *endpoints;
+@property(nonatomic, readonly) NSData *ping;
+@property(nonatomic, readonly) NSData *pong;
+@property(nonatomic) UITableView *tableView;
+@property(nonatomic) UITextView *statusView;
+@property(nonatomic) NSMutableDictionary<GNCEndpointId, id<GNCConnection> > *incomingConnections;
+@end
+
+@implementation ViewController
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+  [self makeViews];
+
+  // Enable "info" log messages in the release build.
+  [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"GTMVerboseLogging"];
+
+  self.title = [[UIDevice currentDevice] name];
+  NSData *endpointInfo = [self.title dataUsingEncoding:NSUTF8StringEncoding];
+  _endpoints = [NSMutableDictionary dictionary];
+  _ping = [@"ping" dataUsingEncoding:NSUTF8StringEncoding];
+  _pong = [@"pong" dataUsingEncoding:NSUTF8StringEncoding];
+  _incomingConnections = [NSMutableDictionary dictionary];
+
+  // The advertiser.
+  _advertiser = [GNCAdvertiser
+       advertiserWithEndpointInfo:endpointInfo
+                        serviceId:kServiceId
+                         strategy:GNCStrategyCluster
+      connectionInitiationHandler:^(GNCEndpointId endpointId,
+                                    id<GNCAdvertiserConnectionInfo> advConnInfo,
+                                    GNCConnectionResponseHandler responseHandler) {
+        // Show a status that a discoverer has requested a connection.
+        [self logStatus:@"Accepting connection request" final:NO];
+
+        // Accept the connection request.
+        responseHandler(GNCConnectionResponseAccept);
+        return [GNCConnectionResultHandlers
+            successHandler:^(id<GNCConnection> connection) {
+              // Save the connection until the ping-pong sequence is done.
+              self.incomingConnections[endpointId] = connection;
+              __block BOOL receivedPong = NO;
+
+              // Send a ping, expecting the remote endpoint to send a pong.
+              [self logStatus:@"Connection established; sending ping" final:NO];
+              [connection sendBytesPayload:[GNCBytesPayload payloadWithBytes:self.ping]
+                                completion:^(GNCPayloadResult result) {
+                                  if (result == GNCPayloadResultSuccess) {
+                                    [self logStatus:@"Sent ping; waiting for pong" final:NO];
+
+                                    // Show an error if the pong isn't received in the expected
+                                    // timeframe.
+                                    delay(3.0, ^{
+                                      if (receivedPong) {
+                                        [self logStatus:@"Error: Didn't receive pong" final:YES];
+                                        [self.incomingConnections
+                                            removeObjectForKey:endpointId];  // close the connection
+                                      }
+                                    });
+                                  } else {
+                                    [self logStatus:@"Error: Failed to send ping" final:YES];
+                                  }
+                                }];
+
+              // Return handlers for incoming payloads.
+              return [GNCConnectionHandlers handlersWithBuilder:^(GNCConnectionHandlers *handlers) {
+                handlers.bytesPayloadHandler = ^(GNCBytesPayload *payload) {
+                  receivedPong = NO;
+                  [self.incomingConnections removeObjectForKey:endpointId];  // close the connection
+
+                  // Show a status of whether the pong was received.
+                  [self logStatus:[payload.bytes isEqual:self.pong] ? @"Received pong"
+                                                                    : @"Error: Payload is not pong"
+                            final:YES];
+                };
+              }];
+            }
+            failureHandler:^(GNCConnectionFailure result) {
+              [self
+                  logStatus:(result == GNCConnectionFailureRejected) ? @"Error: Connection rejected"
+                                                                     : @"Error: Connection failed"
+                      final:YES];
+            }];
+      }];
+
+  // The discoverer.
+  __weak typeof(self) weakSelf = self;
+  _discoverer = [GNCDiscoverer
+      discovererWithServiceId:kServiceId
+                     strategy:GNCStrategyCluster
+         endpointFoundHandler:^(GNCEndpointId endpointId,
+                                id<GNCDiscoveredEndpointInfo> endpointInfo) {
+           typeof(self) self = weakSelf;
+
+           // An endpoint was discovered; add it to the endpoint list and UI.
+           self.endpoints[endpointId] = [[EndpointInfo alloc] initWithDiscoveredInfo:endpointInfo];
+           [self.tableView reloadData];
+
+           // Return the lost handler for this endpoint.
+           return ^{
+             typeof(self) self = weakSelf;  // shadow
+
+             // Endpoint disappeared; remove it from the endpoint list and UI.
+             [self.endpoints removeObjectForKey:endpointId];
+             [self.tableView reloadData];
+           };
+         }];
+}
+
+#pragma mark - UITableViewDelegate
+
+- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
+  // The user tapped on a cell; request a connection with it.
+  EndpointInfo *info = _endpoints[_endpoints.allKeys[indexPath.row]];
+  if (!info) return;
+
+  void (^deselectRow)(void) = ^{
+    [tableView deselectRowAtIndexPath:indexPath animated:YES];
+  };
+
+  [self logStatus:@"Requesting connection" final:NO];
+  info.discInfo.requestConnection(
+      self.title,
+      ^(id<GNCDiscovererConnectionInfo> discConnInfo,
+        GNCConnectionResponseHandler responseHandler) {
+        // Accept the auth token.
+        [self logStatus:@"Accepting auth token" final:NO];
+        responseHandler(GNCConnectionResponseAccept);
+        return ^(id<GNCConnection> connection) {
+          // Save the connection until the ping-pong sequence is done.
+          info.connection = connection;
+          __block BOOL receivedPing = NO;
+
+          [self logStatus:@"Connection established; waiting for ping" final:NO];
+
+          // Show an error if the ping isn't received in the expected timeframe.
+          delay(3.0, ^{
+            if (!receivedPing) {
+              deselectRow();
+              [self logStatus:@"Error: Didn't receive ping" final:YES];
+              info.connection = nil;  // close the connection
+            }
+          });
+
+          // Return handlers for incoming payloads.
+          __weak id<GNCConnection> weakConnection = connection;  // avoid a retain cycle
+          return [GNCConnectionHandlers handlersWithBuilder:^(GNCConnectionHandlers *handlers) {
+            handlers.bytesPayloadHandler = ^(GNCBytesPayload *payload) {
+              receivedPing = YES;
+
+              // If a ping was received, send a pong back to the advertiser.
+              if ([payload.bytes isEqual:self.ping]) {
+                [self logStatus:@"Received ping; sending pong" final:NO];
+                [weakConnection sendBytesPayload:[GNCBytesPayload payloadWithBytes:self.pong]
+                                      completion:^(GNCPayloadResult result) {
+                                        deselectRow();
+                                        [self logStatus:(result == GNCPayloadResultSuccess)
+                                                            ? @"Sent pong"
+                                                            : @"Error: Failed to send pong"
+                                                  final:YES];
+
+                                        // Pong was sent, so close the connection.
+                                        info.connection = nil;
+                                      }];
+              } else {
+                deselectRow();
+                [self logStatus:@"Error: Payload is not ping" final:YES];
+              }
+            };
+          }];
+        };
+      },
+      ^(GNCConnectionFailure result) {
+        // Connection failed.
+        deselectRow();
+        [self logStatus:(result == GNCConnectionFailureRejected) ? @"Connection rejected"
+                                                                 : @"Connection failed"
+                  final:YES];
+      });
+}
+
+- (UITableViewCell *)tableView:(UITableView *)tableView
+         cellForRowAtIndexPath:(NSIndexPath *)indexPath {
+  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kCellIdentifier
+                                                          forIndexPath:indexPath];
+  cell.textLabel.text = _endpoints[_endpoints.allKeys[indexPath.row]].discInfo.name;
+  return cell;
+}
+
+#pragma mark - UITableViewDataSource
+
+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
+  return [_endpoints.allKeys count];
+}
+
+#pragma mark - Private
+
+- (void)makeViews {
+  _tableView = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain];
+  [_tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:kCellIdentifier];
+  _tableView.delegate = self;
+  _tableView.dataSource = self;
+  _tableView.rowHeight = 48;
+  _tableView.scrollEnabled = YES;
+  _tableView.showsVerticalScrollIndicator = YES;
+  _tableView.userInteractionEnabled = YES;
+  _tableView.bounces = YES;
+  _tableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+  [self.view addSubview:_tableView];
+
+  // Make the status view.
+  UITextView * (^newTextView)(CGRect) = ^(CGRect frame) {
+    UITextView *textView = [[UITextView alloc] initWithFrame:frame];
+    textView.autoresizingMask =
+        UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin;
+    textView.layer.borderColor = [UIColor blackColor].CGColor;
+    textView.layer.borderWidth = 1;
+    textView.editable = NO;
+    textView.textContainerInset = UIEdgeInsetsZero;
+    return textView;
+  };
+  CGRect selfFrame = self.view.frame;
+  static const int kStatusHeight = 144;
+  CGRect statusFrame = (CGRect){{selfFrame.origin.x + 4, selfFrame.size.height - kStatusHeight},
+                                {selfFrame.size.width - 8, kStatusHeight - 4}};
+  _statusView = newTextView(statusFrame);
+  [self.view addSubview:_statusView];
+}
+
+- (void)logStatus:(NSString *)status final:(BOOL)final {
+  _statusView.text = [NSString stringWithFormat:@"%@\n%@%@", _statusView.text, status,
+                                                final ? @"\n–––––––––––––––––––––––––" : @""];
+  [_statusView scrollRangeToVisible:NSMakeRange(_statusView.text.length - 1, 1)];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END
@@ -0,0 +1,27 @@
+//
+// Copyright (c) 2021 Google Inc.
+//
+//  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.
+//
+//  main.m
+//  NearbyConnectionsExample
+//
+
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char * argv[]) {
+  @autoreleasepool {
+      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+  }
+}