KVC、KVO的本质

hyalpha · Jan 25, 2021 · d644a1d · d644a1d
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diff --git a/KVC&KVO的本质/KVC&KVO的本质.xcodeproj/project.pbxproj b/KVC&KVO的本质/KVC&KVO的本质.xcodeproj/project.pbxproj
diff --git a/KVC&KVO的本质/KVC&KVO的本质.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/KVC&KVO的本质/KVC&KVO的本质.xcodeproj/project.xcworkspace/contents.xcworkspacedata
diff --git a/KVC&KVO的本质/KVC&KVO的本质/AppDelegate.h b/KVC&KVO的本质/KVC&KVO的本质/AppDelegate.h
@@ -0,0 +1,14 @@
+//
+//  AppDelegate.h
+//  KVC&KVO的本质
+//
+//  Created by pro648 on 2021/1/24.
+//  
+
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+
+
+@end
+
diff --git a/KVC&KVO的本质/KVC&KVO的本质/AppDelegate.m b/KVC&KVO的本质/KVC&KVO的本质/AppDelegate.m
@@ -0,0 +1,40 @@
+//
+//  AppDelegate.m
+//  KVC&KVO的本质
+//
+//  Created by pro648 on 2021/1/24.
+//  
+
+#import "AppDelegate.h"
+
+@interface AppDelegate ()
+
+@end
+
+@implementation AppDelegate
+
+
+- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+    // Override point for customization after application launch.
+    return YES;
+}
+
+
+#pragma mark - UISceneSession lifecycle
+
+
+- (UISceneConfiguration *)application:(UIApplication *)application configurationForConnectingSceneSession:(UISceneSession *)connectingSceneSession options:(UISceneConnectionOptions *)options {
+    // Called when a new scene session is being created.
+    // Use this method to select a configuration to create the new scene with.
+    return [[UISceneConfiguration alloc] initWithName:@"Default Configuration" sessionRole:connectingSceneSession.role];
+}
+
+
+- (void)application:(UIApplication *)application didDiscardSceneSessions:(NSSet<UISceneSession *> *)sceneSessions {
+    // Called when the user discards a scene session.
+    // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
+    // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
+}
+
+
+@end
diff --git a/KVC&KVO的本质/KVC&KVO的本质/Assets.xcassets/AccentColor.colorset/Contents.json b/KVC&KVO的本质/KVC&KVO的本质/Assets.xcassets/AccentColor.colorset/Contents.json
@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/KVC&KVO的本质/KVC&KVO的本质/Assets.xcassets/AppIcon.appiconset/Contents.json b/KVC&KVO的本质/KVC&KVO的本质/Assets.xcassets/AppIcon.appiconset/Contents.json
@@ -0,0 +1,98 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "scale" : "1x",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/KVC&KVO的本质/KVC&KVO的本质/Assets.xcassets/Contents.json b/KVC&KVO的本质/KVC&KVO的本质/Assets.xcassets/Contents.json
@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/KVC&KVO的本质/KVC&KVO的本质/Base.lproj/LaunchScreen.storyboard b/KVC&KVO的本质/KVC&KVO的本质/Base.lproj/LaunchScreen.storyboard
@@ -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" 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" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                        <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>
diff --git a/KVC&KVO的本质/KVC&KVO的本质/Base.lproj/Main.storyboard b/KVC&KVO的本质/KVC&KVO的本质/Base.lproj/Main.storyboard
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
+    <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="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="ViewController" customModuleProvider="" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>
diff --git a/KVC&KVO的本质/KVC&KVO的本质/Info.plist b/KVC&KVO的本质/KVC&KVO的本质/Info.plist
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneConfigurationName</key>
+					<string>Default Configuration</string>
+					<key>UISceneDelegateClassName</key>
+					<string>SceneDelegate</string>
+					<key>UISceneStoryboardFile</key>
+					<string>Main</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>
diff --git a/KVC&KVO的本质/KVC&KVO的本质/KVC/Observer.h b/KVC&KVO的本质/KVC&KVO的本质/KVC/Observer.h
@@ -0,0 +1,16 @@
+//
+//  Observer.h
+//  KVC&KVO的本质
+//
+//  Created by pro648 on 2021/1/24.
+//  
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface Observer : NSObject
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/KVC&KVO的本质/KVC&KVO的本质/KVC/Observer.m b/KVC&KVO的本质/KVC&KVO的本质/KVC/Observer.m
@@ -0,0 +1,16 @@
+//
+//  Observer.m
+//  KVC&KVO的本质
+//
+//  Created by pro648 on 2021/1/24.
+//  
+
+#import "Observer.h"
+
+@implementation Observer
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
+    NSLog(@"%s - %@", __PRETTY_FUNCTION__, change);
+}
+
+@end
diff --git a/KVC&KVO的本质/KVC&KVO的本质/KVC/Person.h b/KVC&KVO的本质/KVC&KVO的本质/KVC/Person.h
@@ -0,0 +1,31 @@
+//
+//  Person.h
+//  KVC&KVO的本质
+//
+//  Created by pro648 on 2021/1/24.
+//  
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface Person : NSObject
+{
+    @public
+    // 如果没有set方法，按照下面顺序查找。
+//    int _age;
+    int _isAge;
+    int age;
+    int isAge;
+}
+
+// 如果没有setAge方法，但有上述成员变量，就会触发KVO。KVO内部实现了willChangeValueForKey didChangeValueForKey。
+
+//@property (nonatomic, assign) int age;
+
+// 如果是只读的，则会查看accessInstanceMethodDirectly返回值，进而决定是否查看成员变量。
+//@property (nonatomic, assign, readonly) int age;
+
+@end
+
+NS_ASSUME_NONNULL_END