Custom Chat Conversation Table Cell | Generated by AI
This is an Objective-C implementation of a custom table view cell for displaying conversation items in a chat application (like iMessage or WhatsApp). Let me break down the key components:
Overview
The LZConversationCell class creates a custom cell that displays:
- User avatar/image
- Contact name
- Last message preview
- Timestamp
- Badge indicators for unread messages
Key Components
1. Layout Constants
static CGFloat kLZImageSize = 45; // Avatar size
static CGFloat kLZVerticalSpacing = 8; // Vertical padding
static CGFloat kLZHorizontalSpacing = 10; // Horizontal padding
static CGFloat kLZTimestampeLabelWidth = 100; // Width for timestamp
2. UI Elements
avatarImageView: User profile picture (45x45 points)nameLabel: Contact name displaymessageTextLabel: Last message previewtimestampLabel: Message time/datelitteBadgeView: Small red dot for new messagesbadgeView: Number badge for unread count
3. Cell Management Methods
+dequeueOrCreateCellByTableView:: Standard table view cell reuse pattern+registerCellToTableView:: Registers cell class with table view+heightOfCell: Fixed height calculation (61 points)
4. Layout Setup
The setup method:
- Calculates label heights based on proportions
- Creates and positions all subviews
- Uses frame-based layout (no Auto Layout)
5. Frame Calculations
Each subview is positioned relative to others:
- Avatar on the left with fixed spacing
- Name and message labels to the right of avatar
- Timestamp aligned to the right edge
- Badge views positioned over the avatar
6. Memory Management
prepareForReuse: Clears all content when cell is recycled- Lazy initialization for all subviews (created only when needed)
Usage Pattern
This cell would be used in a conversations list table view to display each chat conversation with:
- Contact info
- Message preview
- Read/unread status indicators
- Timestamp of last message
The cell follows iOS design patterns and provides visual indicators common in messaging apps.