added swift example with custom cell

Author: pro100andrey

ChatExample/ChatExample.xcodeproj/project.pbxproj

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+//
+//  AppDelegate.swift
+//  ChatExample
+//
+//  Created by Andrey Ivanov on 23/03/2018.
+//  Copyright © 2018 Andrey Ivanov. All rights reserved.
+//
+
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+    var window: UIWindow?
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+        // Override point for customization after application launch.
+        self.window?.backgroundColor = UIColor.white
+        return true
+    }
+}

ChatExample/ChatExample.xcodeproj/project.xcworkspace/contents.xcworkspacedata

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+{
+  "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"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

ChatExample/ChatExample.xcworkspace/contents.xcworkspacedata

@@ -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>

ChatExample/ChatExample/AppDelegate.swift

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+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="taU-GF-uub">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Example-->
+        <scene sceneID="QX5-Re-Uxc">
+            <objects>
+                <tableViewController id="miQ-1k-v67" sceneMemberID="viewController">
+                    <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="static" style="grouped" separatorStyle="default" rowHeight="-1" estimatedRowHeight="-1" sectionHeaderHeight="18" sectionFooterHeight="18" id="Cne-pU-m1K">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" cocoaTouchSystemColor="groupTableViewBackgroundColor"/>
+                        <sections>
+                            <tableViewSection id="wQu-O8-7mX">
+                                <cells>
+                                    <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" selectionStyle="default" indentationWidth="10" textLabel="htk-xu-e49" style="IBUITableViewCellStyleDefault" id="fSg-ba-ECA">
+                                        <rect key="frame" x="0.0" y="35" width="375" height="44"/>
+                                        <autoresizingMask key="autoresizingMask"/>
+                                        <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" preservesSuperviewLayoutMargins="YES" insetsLayoutMarginsFromSafeArea="NO" tableViewCell="fSg-ba-ECA" id="bMV-y1-ezr">
+                                            <rect key="frame" x="0.0" y="0.0" width="375" height="43.5"/>
+                                            <autoresizingMask key="autoresizingMask"/>
+                                            <subviews>
+                                                <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" insetsLayoutMarginsFromSafeArea="NO" text="Push" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="htk-xu-e49">
+                                                    <rect key="frame" x="16" y="0.0" width="343" height="43.5"/>
+                                                    <autoresizingMask key="autoresizingMask"/>
+                                                    <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                                    <nil key="textColor"/>
+                                                    <nil key="highlightedColor"/>
+                                                </label>
+                                            </subviews>
+                                        </tableViewCellContentView>
+                                        <connections>
+                                            <segue destination="Sj9-Ac-pHW" kind="show" id="wfj-uG-yjb"/>
+                                        </connections>
+                                    </tableViewCell>
+                                </cells>
+                            </tableViewSection>
+                        </sections>
+                        <connections>
+                            <outlet property="dataSource" destination="miQ-1k-v67" id="l2a-4l-vBh"/>
+                            <outlet property="delegate" destination="miQ-1k-v67" id="yBt-69-tse"/>
+                        </connections>
+                    </tableView>
+                    <navigationItem key="navigationItem" title="Example" id="HCF-UM-yeV"/>
+                </tableViewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="eHd-Zj-EHx" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="743" y="184"/>
+        </scene>
+        <!--Chat View Controller-->
+        <scene sceneID="gjs-cb-kls">
+            <objects>
+                <viewController id="Sj9-Ac-pHW" customClass="ChatViewController" customModule="ChatExample" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="phq-JM-P46">
+                        <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="HM3-CI-svk"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="hBk-YS-k5X" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="1466" y="172"/>
+        </scene>
+        <!--Navigation Controller-->
+        <scene sceneID="loI-pp-4ro">
+            <objects>
+                <navigationController id="taU-GF-uub" sceneMemberID="viewController">
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" insetsLayoutMarginsFromSafeArea="NO" id="fMH-bU-UYd">
+                        <rect key="frame" x="0.0" y="20" width="375" height="44"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </navigationBar>
+                    <connections>
+                        <segue destination="miQ-1k-v67" kind="relationship" relationship="rootViewController" id="Oem-Sy-Ypj"/>
+                    </connections>
+                </navigationController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="4ks-oV-igL" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="-209" y="184"/>
+        </scene>
+    </scenes>
+</document>

ChatExample/ChatExample/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,92 @@
+//
+//  ViewController.swift
+//  ChatExample
+//
+//  Created by Andrey Ivanov on 23/03/2018.
+//  Copyright © 2018 Andrey Ivanov. All rights reserved.
+//
+
+import UIKit
+import QMChatViewController
+
+class ChatViewController: QMChatViewController {
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        self.senderID = 1300340;
+        self.senderDisplayName = "Sender name"
+        self.view.backgroundColor = UIColor.white
+        
+        self.inputToolbar?.audioRecordingEnabled = false
+        
+        let msg = QBChatMessage()
+        msg.text = "QuickBlox - Communication & cloud backend platform which brings superpowers to your mobile apps. QuickBlox is a suite of communication features & data services (APIs, SDKs, code samples, admin panel, tutorials) which help digital agencies, mobile developers and publishers to add great functionality to smartphone applications. Please read full iOS SDK documentation on the"
+        msg.senderID = self.senderID
+        msg.dateSent = Date()
+        self.chatDataSource.add(msg)
+        
+        let msg2 = QBChatMessage()
+        msg2.text = "QuickBlox"
+        msg2.senderID = self.senderID
+        msg2.dateSent = Date()
+        
+        self.chatDataSource.add(msg2)
+        CustomCell.registerForReuse(inView: self.collectionView)
+    }
+    
+    override func didPressSend(_ button: UIButton,
+                               withMessageText text: String,
+                               senderId: UInt,
+                               senderDisplayName: String,
+                               date: Date) {
+    
+        let msg = QBChatMessage()
+        msg.text = text
+        msg.senderID = senderId
+        msg.dateSent = Date()
+        self.chatDataSource.add(msg)
+        self.finishSendingMessage(animated: true)
+    }
+    
+    override func viewClass(forItem item: QBChatMessage) -> AnyClass {
+        
+        if item.isDateDividerMessage {
+            return QMChatNotificationCell.self
+        }
+        else {
+            return CustomCell.self
+        }
+    }
+    
+    override func collectionView(_ collectionView: QMChatCollectionView!, dynamicSizeAt indexPath: IndexPath!, maxWidth: CGFloat) -> CGSize {
+        
+        let size = TTTAttributedLabel.sizeThatFitsAttributedString(self.attributedString(forItem: self.chatDataSource.message(for: indexPath)),
+                                                                   withConstraints: CGSize(width:maxWidth, height:1000),
+                                                                   limitedToNumberOfLines: 0)
+        return size
+    }
+    
+    override func collectionView(_ collectionView: QMChatCollectionView!, minWidthAt indexPath: IndexPath!) -> CGFloat {
+        
+        let msg = self.chatDataSource.message(for: indexPath)
+        let viewClass: AnyClass = self.viewClass(forItem: msg!)
+        if viewClass == QMChatNotificationCell.self {
+            return 60
+        }
+        return TTTAttributedLabel.sizeThatFitsAttributedString(self.attributedString(forItem: msg!),
+                                                               withConstraints: CGSize(width:100, height:1000),
+                                                               limitedToNumberOfLines: 0).width
+    }
+    
+    override func topLabelAttributedString(forItem messageItem: QBChatMessage) -> NSAttributedString? {
+        return nil
+    }
+    
+    override func attributedString(forItem messageItem: QBChatMessage) -> NSAttributedString? {
+        return NSAttributedString(string: messageItem.text!)
+    }
+    
+    override func bottomLabelAttributedString(forItem messageItem: QBChatMessage) -> NSAttributedString? {
+        return NSAttributedString(string: "sent")
+    }
+}

ChatExample/ChatExample/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,31 @@
+//
+//  CustomCell.swift
+//  ChatExample
+//
+//  Created by Andrey Ivanov on 23/03/2018.
+//  Copyright © 2018 Andrey Ivanov. All rights reserved.
+//
+
+import UIKit
+import QMChatViewController.QMChatCell
+
+class CustomCell: QMChatCell {
+    
+    static override func nib() -> UINib {
+        return UINib(nibName: String(describing: self), bundle: nil)
+    }
+    
+    static override func cellReuseIdentifier() -> String {
+        return String(describing: self)
+    }
+    
+    static override func layoutModel() -> QMChatCellLayoutModel {
+        var model = super.layoutModel()
+        model.avatarSize = .zero
+        model.containerInsets = UIEdgeInsetsMake(8, 10, 8, 18)
+        model.topLabelHeight = 0
+        model.spaceBetweenTextViewAndBottomLabel = 0
+        model.bottomLabelHeight = 14
+        return model;
+    }
+}