【需求】home图标更新。

project/iPhone/LWAVFoundation/LWAVFoundation/Assets.xcassets/home.imageset/Contents.json

+{
+  "images" : [
+    {
+      "filename" : "home.jpeg",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

project/iPhone/LWAVFoundation/LWAVFoundation/ViewController.m

@@ -3,6 +3,7 @@
 #import "CaptureViewController.h"
 
 @interface ViewController ()
+@property (strong, nonatomic) UIImage* homeImage;
 @property (strong, nonatomic) UIImage* captureImage;
 @end
 
@@ -11,13 +12,28 @@
 - (void)viewDidLoad {
     [super viewDidLoad];
     // Do any additional setup after loading the view.
+    [self generateImage];
     
     HomeViewController* vc = [[HomeViewController alloc] init];
-    vc.tabBarItem.image         = [[UIImage imageNamed:@"homekit"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
-    vc.tabBarItem.selectedImage = [[UIImage imageNamed:@"homekit"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
+    [vc.tabBarItem setImage:[self.homeImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
+    [vc.tabBarItem setSelectedImage:[self.homeImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
+    [vc.tabBarItem.selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
+    [vc.tabBarItem.image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
     vc.title                    = @"首页";
+    vc.view.backgroundColor     = [UIColor whiteColor];
     [self addChildViewController:vc];
     
+    CaptureViewController* cvc   = [[CaptureViewController alloc] init];
+    [cvc.tabBarItem setImage:[self.captureImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
+    [cvc.tabBarItem setSelectedImage:[self.captureImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
+    [cvc.tabBarItem.selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
+    [cvc.tabBarItem.image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
+    cvc.title                    = @"开播";
+    cvc.view.backgroundColor     = [UIColor whiteColor];
+    [self addChildViewController:cvc];
+}
+
+- (void)generateImage {
     UIImage *image1 = [UIImage imageNamed:@"capture"];
     [image1 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
     CGSize size = CGSizeMake(30, 30);
@@ -27,14 +43,14 @@
     [self.captureImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
     UIGraphicsEndImageContext();
     
-    CaptureViewController* cvc   = [[CaptureViewController alloc] init];
-    [cvc.tabBarItem setImage:[self.captureImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
-    [cvc.tabBarItem setSelectedImage:[self.captureImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
-    [cvc.tabBarItem.selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
-    [cvc.tabBarItem.image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
-    cvc.title                    = @"开播";
-    cvc.view.backgroundColor     = [UIColor whiteColor];
-    [self addChildViewController:cvc];
+    image1 = [UIImage imageNamed:@"home"];
+    [image1 imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
+    size = CGSizeMake(30, 30);
+    UIGraphicsBeginImageContext(size);
+    [image1 drawInRect:CGRectMake(0, 0, size.width, size.height)];
+    self.homeImage = UIGraphicsGetImageFromCurrentImageContext();
+    [self.homeImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
+    UIGraphicsEndImageContext();
 }
 
 // 禁止横竖屏切换

project/iPhone/LWAVFoundation/LWAVFoundation/ViewController/HomeViewController.m

@@ -16,8 +16,6 @@
 @implementation HomeViewController
 
 - (void)viewDidLoad {
-    self.view.backgroundColor = [UIColor whiteColor];
-    
     CGRect bounds = [UIScreen mainScreen].bounds;
     int imageViewX = (bounds.size.width - 300) / 2;
     int imageViewY = (bounds.size.height - 450) / 3;