Add full support for Dynamic Type

Author: Tyler Fox

TableViewCellWithAutoLayout/TableViewController/RJTableViewCell.h

@@ -33,4 +33,6 @@
 @property (strong, nonatomic) IBOutlet UILabel *titleLabel;
 @property (strong, nonatomic) IBOutlet UILabel *bodyLabel;
 
+- (void)updateFonts;
+
 @end

TableViewCellWithAutoLayout/TableViewController/RJTableViewCell.m

@@ -28,7 +28,7 @@
 
 @interface RJTableViewCell ()
 
-@property (nonatomic, assign) BOOL hasSetupConstraints;
+@property (nonatomic, assign) BOOL didSetupConstraints;
 
 @end
 
@@ -44,7 +44,6 @@ - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reus
         [self.titleLabel setLineBreakMode:NSLineBreakByTruncatingTail];
         [self.titleLabel setNumberOfLines:1];
         [self.titleLabel setTextAlignment:NSTextAlignmentLeft];
-        [self.titleLabel setFont: [UIFont fontWithName:@"Helvetica-Bold" size:21]];
         [self.titleLabel setTextColor:[UIColor blackColor]];
         [self.titleLabel setBackgroundColor:[UIColor clearColor]];
 
@@ -54,12 +53,13 @@ - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reus
         [self.bodyLabel setLineBreakMode:NSLineBreakByTruncatingTail];
         [self.bodyLabel setNumberOfLines:0];
         [self.bodyLabel setTextAlignment:NSTextAlignmentLeft];
-        [self.bodyLabel setFont: [UIFont fontWithName:@"Helvetica" size:14]];
         [self.bodyLabel setTextColor:[UIColor darkGrayColor]];
         [self.bodyLabel setBackgroundColor:[UIColor clearColor]];
 
         [self.contentView addSubview:self.titleLabel];
         [self.contentView addSubview:self.bodyLabel];
+        
+        [self updateFonts];
     }
 
     return self;
@@ -68,7 +68,7 @@ - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reus
 - (void)updateConstraints {
     [super updateConstraints];
 
-    if (self.hasSetupConstraints) return;
+    if (self.didSetupConstraints) return;
 
     [self.contentView addConstraint:[NSLayoutConstraint
                                      constraintWithItem:self.titleLabel
@@ -135,8 +135,13 @@ - (void)updateConstraints {
                                       multiplier:1.0f
                                       constant:-(kLabelHorizontalInsets / 2)]];
 
-    self.hasSetupConstraints = YES;
-    
+    self.didSetupConstraints = YES;
+}
+
+- (void)updateFonts
+{
+    self.titleLabel.font = [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline];
+    self.bodyLabel.font = [UIFont preferredFontForTextStyle:UIFontTextStyleCaption2];
 }
 
 - (void)setSelected:(BOOL)selected animated:(BOOL)animated {

TableViewCellWithAutoLayout/TableViewController/RJTableViewController.m

@@ -51,14 +51,27 @@ - (id)initWithStyle:(UITableViewStyle)style
 - (void)viewDidLoad
 {
     [super viewDidLoad];
+    
     [self.tableView registerClass:[RJTableViewCell class] forCellReuseIdentifier:CellIdentifier];
+}
 
-    // Uncomment the following line to preserve selection between presentations.
-    // self.clearsSelectionOnViewWillAppear = NO;
- 
-    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
-    // self.navigationItem.rightBarButtonItem = self.editButtonItem;
+- (void)viewDidAppear:(BOOL)animated
+{
+    [super viewDidAppear:animated];
+    
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(contentSizeCategoryChanged:)
+                                                 name:UIContentSizeCategoryDidChangeNotification
+                                               object:nil];
+}
+
+- (void)viewDidDisappear:(BOOL)animated
+{
+    [super viewDidDisappear:animated];
 
+    [[NSNotificationCenter defaultCenter] removeObserver:self
+                                                    name:UIContentSizeCategoryDidChangeNotification
+                                                  object:nil];
 }
 
 - (void)didReceiveMemoryWarning
@@ -67,6 +80,11 @@ - (void)didReceiveMemoryWarning
     // Dispose of any resources that can be recreated.
 }
 
+- (void)contentSizeCategoryChanged:(NSNotification *)notification
+{
+    [self.tableView reloadData];
+}
+
 #pragma mark - Table view data source
 
 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
@@ -86,7 +104,7 @@ - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(N
 
     RJTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
 
-    // Configure the cell...
+    [cell updateFonts];
 
     NSDictionary *dataSourceItem = [self.model.dataSource objectAtIndex:indexPath.row];
 
@@ -104,6 +122,8 @@ - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPa
 
     RJTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
 
+    [cell updateFonts];
+    
     NSDictionary *dataSourceItem = [self.model.dataSource objectAtIndex:indexPath.row];
     cell.titleLabel.text =  [dataSourceItem valueForKey:@"title"];
     cell.bodyLabel.text = [dataSourceItem valueForKey:@"body"];
@@ -122,9 +142,7 @@ - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPa
 
 - (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath
 {
-
     return 500.0f;
-
 }
 
 /*