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bestswifterbestswifter
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OC，load和initialize方法
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‎load/Other.h

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//
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// Normal.h
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// load
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//
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// Created by 张星宇 on 16/2/1.
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// Copyright © 2016年 zxy. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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@interface Other : NSObject
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+ (void)printName;
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@end

‎load/Other.m

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//
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// Normal.m
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// load
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//
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// Created by 张星宇 on 16/2/1.
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// Copyright © 2016年 zxy. All rights reserved.
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//
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#import "Other.h"
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@implementation Other
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static NSString *name;
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+ (void)load {
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name = @"Other";
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NSLog(@"Load Class Normal");
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}
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+ (void)printName {
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NSLog(@"%@",name);
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}
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@end

‎load/load.xcodeproj/project.pbxproj

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// !$*UTF8*$!
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{
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archiveVersion = 1;
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classes = {
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};
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objectVersion = 46;
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objects = {
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/* Begin PBXBuildFile section */
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9B8E43CB1C5F6E40002ABEBC /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 9B8E43CA1C5F6E40002ABEBC /* main.m */; };
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9B8E43D31C5F6E78002ABEBC /* Parent.m in Sources */ = {isa = PBXBuildFile; fileRef = 9B8E43D21C5F6E78002ABEBC /* Parent.m */; };
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9B8E43D61C5F6E7E002ABEBC /* Child.m in Sources */ = {isa = PBXBuildFile; fileRef = 9B8E43D51C5F6E7E002ABEBC /* Child.m */; };
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9B8E43D91C5F7070002ABEBC /* Other.m in Sources */ = {isa = PBXBuildFile; fileRef = 9B8E43D81C5F7070002ABEBC /* Other.m */; };
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/* End PBXBuildFile section */
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/* Begin PBXCopyFilesBuildPhase section */
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9B8E43C51C5F6E40002ABEBC /* CopyFiles */ = {
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isa = PBXCopyFilesBuildPhase;
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buildActionMask = 2147483647;
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dstPath = /usr/share/man/man1/;
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dstSubfolderSpec = 0;
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files = (
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);
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runOnlyForDeploymentPostprocessing = 1;
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};
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/* End PBXCopyFilesBuildPhase section */
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/* Begin PBXFileReference section */
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9B8E43C71C5F6E40002ABEBC /* load */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = load; sourceTree = BUILT_PRODUCTS_DIR; };
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9B8E43CA1C5F6E40002ABEBC /* main.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = "<group>"; };
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9B8E43D11C5F6E78002ABEBC /* Parent.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Parent.h; sourceTree = "<group>"; };
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9B8E43D21C5F6E78002ABEBC /* Parent.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = Parent.m; sourceTree = "<group>"; };
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9B8E43D41C5F6E7E002ABEBC /* Child.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Child.h; sourceTree = "<group>"; };
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9B8E43D51C5F6E7E002ABEBC /* Child.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = Child.m; sourceTree = "<group>"; };
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9B8E43D71C5F7070002ABEBC /* Other.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = Other.h; path = ../Other.h; sourceTree = "<group>"; };
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9B8E43D81C5F7070002ABEBC /* Other.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = Other.m; path = ../Other.m; sourceTree = "<group>"; };
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/* End PBXFileReference section */
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/* Begin PBXFrameworksBuildPhase section */
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9B8E43C41C5F6E40002ABEBC /* Frameworks */ = {
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isa = PBXFrameworksBuildPhase;
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buildActionMask = 2147483647;
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files = (
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);
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runOnlyForDeploymentPostprocessing = 0;
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};
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/* End PBXFrameworksBuildPhase section */
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/* Begin PBXGroup section */
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9B8E43BE1C5F6E40002ABEBC = {
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isa = PBXGroup;
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children = (
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9B8E43C91C5F6E40002ABEBC /* load */,
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9B8E43C81C5F6E40002ABEBC /* Products */,
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);
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sourceTree = "<group>";
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};
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9B8E43C81C5F6E40002ABEBC /* Products */ = {
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isa = PBXGroup;
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children = (
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9B8E43C71C5F6E40002ABEBC /* load */,
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);
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name = Products;
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sourceTree = "<group>";
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};
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9B8E43C91C5F6E40002ABEBC /* load */ = {
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isa = PBXGroup;
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children = (
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9B8E43CA1C5F6E40002ABEBC /* main.m */,
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9B8E43D71C5F7070002ABEBC /* Other.h */,
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9B8E43D81C5F7070002ABEBC /* Other.m */,
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9B8E43D11C5F6E78002ABEBC /* Parent.h */,
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9B8E43D21C5F6E78002ABEBC /* Parent.m */,
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9B8E43D41C5F6E7E002ABEBC /* Child.h */,
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9B8E43D51C5F6E7E002ABEBC /* Child.m */,
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);
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path = load;
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sourceTree = "<group>";
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};
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/* End PBXGroup section */
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/* Begin PBXNativeTarget section */
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9B8E43C61C5F6E40002ABEBC /* load */ = {
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isa = PBXNativeTarget;
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buildConfigurationList = 9B8E43CE1C5F6E40002ABEBC /* Build configuration list for PBXNativeTarget "load" */;
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buildPhases = (
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9B8E43C31C5F6E40002ABEBC /* Sources */,
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9B8E43C41C5F6E40002ABEBC /* Frameworks */,
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9B8E43C51C5F6E40002ABEBC /* CopyFiles */,
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);
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buildRules = (
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);
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dependencies = (
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);
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name = load;
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productName = load;
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productReference = 9B8E43C71C5F6E40002ABEBC /* load */;
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productType = "com.apple.product-type.tool";
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};
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/* End PBXNativeTarget section */
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/* Begin PBXProject section */
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9B8E43BF1C5F6E40002ABEBC /* Project object */ = {
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isa = PBXProject;
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attributes = {
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LastUpgradeCheck = 0720;
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ORGANIZATIONNAME = zxy;
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TargetAttributes = {
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9B8E43C61C5F6E40002ABEBC = {
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CreatedOnToolsVersion = 7.2;
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};
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};
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};
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buildConfigurationList = 9B8E43C21C5F6E40002ABEBC /* Build configuration list for PBXProject "load" */;
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compatibilityVersion = "Xcode 3.2";
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developmentRegion = English;
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hasScannedForEncodings = 0;
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knownRegions = (
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en,
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);
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mainGroup = 9B8E43BE1C5F6E40002ABEBC;
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productRefGroup = 9B8E43C81C5F6E40002ABEBC /* Products */;
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projectDirPath = "";
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projectRoot = "";
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targets = (
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9B8E43C61C5F6E40002ABEBC /* load */,
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);
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};
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/* End PBXProject section */
130+
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/* Begin PBXSourcesBuildPhase section */
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9B8E43C31C5F6E40002ABEBC /* Sources */ = {
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isa = PBXSourcesBuildPhase;
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buildActionMask = 2147483647;
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files = (
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9B8E43CB1C5F6E40002ABEBC /* main.m in Sources */,
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9B8E43D61C5F6E7E002ABEBC /* Child.m in Sources */,
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9B8E43D31C5F6E78002ABEBC /* Parent.m in Sources */,
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9B8E43D91C5F7070002ABEBC /* Other.m in Sources */,
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);
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runOnlyForDeploymentPostprocessing = 0;
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};
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/* End PBXSourcesBuildPhase section */
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145+
/* Begin XCBuildConfiguration section */
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9B8E43CC1C5F6E40002ABEBC /* Debug */ = {
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isa = XCBuildConfiguration;
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buildSettings = {
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ALWAYS_SEARCH_USER_PATHS = NO;
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CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
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CLANG_CXX_LIBRARY = "libc++";
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CLANG_ENABLE_MODULES = YES;
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CLANG_ENABLE_OBJC_ARC = YES;
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CLANG_WARN_BOOL_CONVERSION = YES;
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CLANG_WARN_CONSTANT_CONVERSION = YES;
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CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
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CLANG_WARN_EMPTY_BODY = YES;
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CLANG_WARN_ENUM_CONVERSION = YES;
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CLANG_WARN_INT_CONVERSION = YES;
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CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
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CLANG_WARN_UNREACHABLE_CODE = YES;
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CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
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CODE_SIGN_IDENTITY = "-";
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COPY_PHASE_STRIP = NO;
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DEBUG_INFORMATION_FORMAT = dwarf;
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ENABLE_STRICT_OBJC_MSGSEND = YES;
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ENABLE_TESTABILITY = YES;
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GCC_C_LANGUAGE_STANDARD = gnu99;
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GCC_DYNAMIC_NO_PIC = NO;
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GCC_NO_COMMON_BLOCKS = YES;
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GCC_OPTIMIZATION_LEVEL = 0;
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GCC_PREPROCESSOR_DEFINITIONS = (
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"DEBUG=1",
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"$(inherited)",
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);
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GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
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GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
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GCC_WARN_UNDECLARED_SELECTOR = YES;
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GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
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GCC_WARN_UNUSED_FUNCTION = YES;
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GCC_WARN_UNUSED_VARIABLE = YES;
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MACOSX_DEPLOYMENT_TARGET = 10.11;
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MTL_ENABLE_DEBUG_INFO = YES;
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ONLY_ACTIVE_ARCH = YES;
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SDKROOT = macosx;
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};
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name = Debug;
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};
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9B8E43CD1C5F6E40002ABEBC /* Release */ = {
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isa = XCBuildConfiguration;
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buildSettings = {
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ALWAYS_SEARCH_USER_PATHS = NO;
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CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
194+
CLANG_CXX_LIBRARY = "libc++";
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CLANG_ENABLE_MODULES = YES;
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CLANG_ENABLE_OBJC_ARC = YES;
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CLANG_WARN_BOOL_CONVERSION = YES;
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CLANG_WARN_CONSTANT_CONVERSION = YES;
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CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
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CLANG_WARN_EMPTY_BODY = YES;
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CLANG_WARN_ENUM_CONVERSION = YES;
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CLANG_WARN_INT_CONVERSION = YES;
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CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
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CLANG_WARN_UNREACHABLE_CODE = YES;
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CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
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CODE_SIGN_IDENTITY = "-";
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COPY_PHASE_STRIP = NO;
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DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
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ENABLE_NS_ASSERTIONS = NO;
210+
ENABLE_STRICT_OBJC_MSGSEND = YES;
211+
GCC_C_LANGUAGE_STANDARD = gnu99;
212+
GCC_NO_COMMON_BLOCKS = YES;
213+
GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
214+
GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
215+
GCC_WARN_UNDECLARED_SELECTOR = YES;
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GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
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GCC_WARN_UNUSED_FUNCTION = YES;
218+
GCC_WARN_UNUSED_VARIABLE = YES;
219+
MACOSX_DEPLOYMENT_TARGET = 10.11;
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MTL_ENABLE_DEBUG_INFO = NO;
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SDKROOT = macosx;
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};
223+
name = Release;
224+
};
225+
9B8E43CF1C5F6E40002ABEBC /* Debug */ = {
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isa = XCBuildConfiguration;
227+
buildSettings = {
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PRODUCT_NAME = "$(TARGET_NAME)";
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};
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name = Debug;
231+
};
232+
9B8E43D01C5F6E40002ABEBC /* Release */ = {
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isa = XCBuildConfiguration;
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buildSettings = {
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PRODUCT_NAME = "$(TARGET_NAME)";
236+
};
237+
name = Release;
238+
};
239+
/* End XCBuildConfiguration section */
240+
241+
/* Begin XCConfigurationList section */
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9B8E43C21C5F6E40002ABEBC /* Build configuration list for PBXProject "load" */ = {
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isa = XCConfigurationList;
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buildConfigurations = (
245+
9B8E43CC1C5F6E40002ABEBC /* Debug */,
246+
9B8E43CD1C5F6E40002ABEBC /* Release */,
247+
);
248+
defaultConfigurationIsVisible = 0;
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defaultConfigurationName = Release;
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};
251+
9B8E43CE1C5F6E40002ABEBC /* Build configuration list for PBXNativeTarget "load" */ = {
252+
isa = XCConfigurationList;
253+
buildConfigurations = (
254+
9B8E43CF1C5F6E40002ABEBC /* Debug */,
255+
9B8E43D01C5F6E40002ABEBC /* Release */,
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);
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defaultConfigurationIsVisible = 0;
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};
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/* End XCConfigurationList section */
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};
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rootObject = 9B8E43BF1C5F6E40002ABEBC /* Project object */;
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}

‎load/load/Child.h

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//
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// Child.h
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// load
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//
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// Created by 张星宇 on 16/2/1.
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// Copyright © 2016年 zxy. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import "Parent.h"
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@interface Child : Parent
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@end

‎load/load/Child.m

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//
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// Child.m
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// load
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//
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// Created by 张星宇 on 16/2/1.
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// Copyright © 2016年 zxy. All rights reserved.
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//
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#import "Child.h"
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#import "Other.h"
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@implementation Child
13+
14+
+ (void)load {
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NSLog(@"Load Class Child");
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Other *normal = [[Other alloc] init];
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NSLog(@"%@",normal);
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// 如果不先调用Normal的load，下面这行代码就无效，打印出null
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[Other printName];
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}
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//+ (void)initialize {
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// NSLog(@"Initialize Child, caller Class %@", [self class]);
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//}
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@end

‎load/load/Parent.h

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//
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// Parent.h
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// load
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//
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// Created by 张星宇 on 16/2/1.
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// Copyright © 2016年 zxy. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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@interface Parent : NSObject
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@end

‎load/load/Parent.m

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//
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// Parent.m
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// load
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//
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// Created by 张星宇 on 16/2/1.
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// Copyright © 2016年 zxy. All rights reserved.
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//
8+
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#import "Parent.h"
10+
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static int someNumber = 0;
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static NSMutableArray *someObjects;
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@implementation Parent
15+
16+
+ (void)load {
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NSLog(@"Load Class Parent");
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}
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//+ (void)initialize {
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// NSLog(@"Initialize Parent, caller Class %@", [self class]);
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//}
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/**
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* 下面这个才是正确的initialize方法的实现，需要判断是不是由自己这个类调用的。
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*/
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+ (void)initializeCorrect {
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if (self == [Parent class]) {
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someObjects = [[NSMutableArray alloc] init]; // 不方便编译期复制的对象在这里赋值
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NSLog(@"Initialize Parent, caller Class %@", [self class]);
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}
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}
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@end

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