049高亮显示屏幕中的文本

1 #import <UIKit/UIKit.h>
2 
3 @interface ViewController : UITableViewController
4 @property (strong, nonatomic) NSArray *arrColor;
5 
6 - (id)initWithColorArray:(NSArray *)arrColor;
7 
8 @end

 1 #import "ViewController.h"
 2 
 3 @interface ViewController ()
 4 - (void)layoutUI;
 5 - (void)highlightedSwitchDidPush;
 6 @end
 7 
 8 @implementation ViewController
 9 
10 - (void)viewDidLoad {
11     [super viewDidLoad];
12     
13     [self layoutUI];
14 }
15 
16 - (void)didReceiveMemoryWarning {
17     [super didReceiveMemoryWarning];
18     // Dispose of any resources that can be recreated.
19 }
20 
21 - (id)initWithColorArray:(NSArray *)arrColor {
22     if (self = [super initWithStyle:UITableViewStyleGrouped]) {
23         self.navigationItem.prompt = @"高亮显示屏幕中的文本";
24         self.navigationItem.title = @"highlightedTextColor";;
25         
26         _arrColor = arrColor;
27     }
28     return self;
29 }
30 
31 - (void)layoutUI {
32     UIButton *btnHighlightedSwitch = [UIButton buttonWithType:UIButtonTypeCustom];
33     btnHighlightedSwitch.frame = CGRectMake(0, 0, 160, 40);
34     CGPoint newPoint = self.view.center;
35     newPoint.y = self.view.frame.size.height - 150;
36     btnHighlightedSwitch.center = newPoint;
37     btnHighlightedSwitch.backgroundColor = [UIColor colorWithRed:0.940 green:1.000 blue:0.709 alpha:1.000];
38     btnHighlightedSwitch.layer.masksToBounds = YES;
39     btnHighlightedSwitch.layer.cornerRadius = 10.0;
40     btnHighlightedSwitch.layer.borderColor = [UIColor colorWithRed:0.313 green:0.896 blue:1.000 alpha:1.000].CGColor;
41     btnHighlightedSwitch.layer.borderWidth = 2.0;
42     [btnHighlightedSwitch setTitle:@"highlighted切换" forState:UIControlStateNormal];
43     [btnHighlightedSwitch setTitleColor:[UIColor colorWithRed:0.290 green:0.941 blue:1.000 alpha:1.000] forState:UIControlStateNormal];
44     [btnHighlightedSwitch addTarget:self action:@selector(highlightedSwitchDidPush) forControlEvents:UIControlEventTouchUpInside];
45     [self.view addSubview:btnHighlightedSwitch];
46 }
47 
48 - (void)highlightedSwitchDidPush {
49     NSInteger rowCount = [self.tableView numberOfRowsInSection:0];
50     for (NSUInteger i=0; i<rowCount; i++) {
51         NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i inSection:0];
52         UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
53         cell.textLabel.highlighted = !cell.textLabel.highlighted;
54     }
55 }
56 
57 #pragma mark - UITableViewController相关方法重写
58 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
59     return @"UITableView列表";
60 }
61 
62 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
63     return 1;
64 }
65 
66 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
67     return [_arrColor count];
68 }
69 
70 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
71     static NSString *cellIdentifier = @"cell";
72     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
73     if (!cell) {
74         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
75     }
76     cell.textLabel.text = _arrColor[indexPath.row];
77     cell.textLabel.highlightedTextColor = [UIColor performSelector:NSSelectorFromString(cell.textLabel.text)];
78     return cell;
79 }
80 
81 - (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
82     UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
83     NSLog(@"%@选择前时是否高亮？%@", cell.textLabel.text, cell.textLabel.highlighted ? @"是" : @"否");
84     return indexPath;
85 }
86 
87 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
88     UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
89     NSLog(@"%@已选择时是否高亮？%@", cell.textLabel.text, cell.textLabel.highlighted ? @"是" : @"否");
90 }
91 
92 @end

1 #import <UIKit/UIKit.h>
2 
3 @interface AppDelegate : UIResponder <UIApplicationDelegate>
4 @property (strong, nonatomic) UIWindow *window;
5 @property (strong, nonatomic) UINavigationController *navigationController;
6 
7 @end

 1 #import "AppDelegate.h"
 2 #import "ViewController.h"
 3 
 4 @interface AppDelegate ()
 5 @end
 6 
 7 @implementation AppDelegate
 8 
 9 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
10     _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
11     ViewController *viewController = [[ViewController alloc] initWithColorArray:@[@"redColor", @"greenColor", @"blueColor"]];
12     _navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
13     _window.rootViewController = _navigationController;
14     [_window addSubview:_navigationController.view];
15     [_window makeKeyAndVisible];
16     return YES;
17 }
18 
19 - (void)applicationWillResignActive:(UIApplication *)application {
20 }
21 
22 - (void)applicationDidEnterBackground:(UIApplication *)application {
23 }
24 
25 - (void)applicationWillEnterForeground:(UIApplication *)application {
26 }
27 
28 - (void)applicationDidBecomeActive:(UIApplication *)application {
29 }
30 
31 - (void)applicationWillTerminate:(UIApplication *)application {
32 }
33 
34 @end