{"id":25,"date":"2014-10-12T23:05:42","date_gmt":"2014-10-12T15:05:42","guid":{"rendered":"http:\/\/www.olinone.com\/?p=25"},"modified":"2016-03-31T00:41:37","modified_gmt":"2016-03-30T16:41:37","slug":"objective-c%e5%af%b9%e8%b1%a1%e9%87%8a%e6%94%be%e6%a3%80%e6%b5%8b","status":"publish","type":"post","link":"http:\/\/www.olinone.com\/?p=25","title":{"rendered":"iOS\u5185\u5b58\u6cc4\u9732\u68c0\u6d4b\u5de5\u5177HJNSObjectRelease"},"content":{"rendered":"<p>Demo\uff1a<a href=\"https:\/\/github.com\/panghaijiao\/HJNSObjectReleaseDemo\">https:\/\/github.com\/panghaijiao\/HJNSObjectReleaseDemo<\/a><\/p>\n<p>iOS\u5185\u5b58\u6cc4\u9732\u4e00\u76f4\u662f\u7a0b\u5e8f\u733f\u9700\u8981\u6ce8\u610f\u7684\u95ee\u9898\uff0c\u76ee\u524d\u6765\u8bf4\uff0ciOS\u5b98\u65b9\u63d0\u4f9b\u5185\u5b58\u6cc4\u9732\u68c0\u6d4b\u7684\u5de5\u5177\u4e3b\u8981\u662fxcode instrument\uff0c\u7f51\u4e0a\u76f8\u5173\u6587\u6863\u6bd4\u8f83\u591a\uff0c\u5728\u6b21\u5c31\u4e0d\u518d\u4ecb\u7ecd\u3002\u4f46\u662finstrument\u68c0\u6d4b\u6709\u51e0\u4e2a\u95ee\u9898\uff1a<\/p>\n<ol>\n<li>\u7531\u4e8e\u5176\u529f\u80fd\u8fc7\u4e8e\u5f3a\u5927\uff0c\u5bfc\u81f4\u5176\u68c0\u6d4b\u65f6\u95f4\u6bd4\u8f83\u957f\uff0c \u7a0b\u5e8f\u733f\u4e0d\u53ef\u80fd\u7ecf\u5e38\u4f7f\u7528\uff1b<\/li>\n<li>\u65e0\u6cd5\u68c0\u6d4b\u4e00\u4e9b\u7279\u6b8a\u5bf9\u8c61\u7684\u6cc4\u9732\uff0c\u5982\u88ab\u5355\u4f8b\u5f15\u7528\u8fc7\u7684\u5bf9\u8c61\uff0c\u6216\u8005Block\u5faa\u73af\u5f15\u7528\u7684\u5bf9\u8c61\uff1b<\/li>\n<li>\u5185\u5b58\u6cc4\u9732\u5bf9\u8c61\u63d0\u793a\u4f4d\u7f6e\u4e0d\u51c6\uff0c\u5176\u63d0\u793a\u6cc4\u9732\u7684\u4f4d\u7f6e\u5f88\u591a\u65f6\u5019\u5e76\u4e0d\u662f\u5bf9\u8c61\u5b9e\u9645\u6cc4\u9732\u7684\u4f4d\u7f6e\uff0c\u6709\u53ef\u80fd\u662f\u5176\u5f15\u7528\u7c7b\u6cc4\u9732\u6240\u81f4\uff0c\u7a0b\u5e8f\u733f\u56e0\u6b64\u65e0\u6cd5\u7cbe\u51c6\u5b9a\u4f4d\u5b9e\u9645\u6cc4\u9732\u5bf9\u8c61\uff0c\u5f53\u7136\uff0c\u5bf9\u4e8e\u9ad8\u7ea7\u7a0b\u5e8f\u733f\uff0c\u53ef\u80fd\u4f1a\u8be6\u7ec6\u8ffd\u6eaf\u6cc4\u9732\u7684\u6839\u6e90\uff0c\u4e0d\u8db3\u5728\u4e8e\u4ee3\u4ef7\u8f83\u5927\u3002<\/li>\n<\/ol>\n<p>\u672c\u671f\u4e3b\u8981\u4ecb\u7ecdHJNSObjectRelease\u5185\u5b58\u68c0\u6d4b\u5de5\u5177\u3002<br \/>\niOS\u5bf9\u8c61\u751f\u547d\u671f\u53ef\u4ee5\u62bd\u8c61\u4e3a\u521b\u5efa\u548c\u91ca\u653e\u4e24\u4e2a\u8fc7\u7a0b\uff0c\u53ea\u6709\u521b\u5efa\u6ca1\u6709\u91ca\u653e\u5c31\u8868\u660e\u8be5\u5bf9\u8c61\u6cc4\u9732\u3002\u57fa\u4e8e\u6b64\u539f\u5219\uff0c\u53ef\u4ee5\u76d1\u63a7\u4efb\u4f55\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u91ca\u653e\u8fc7\u7a0b\uff0c\u90a3\u4e48\u95ee\u9898\u6765\u4e86\uff0c\u5982\u4f55\u68c0\u6d4b\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u91ca\u653e\uff1f<\/p>\n<pre class=\"lang:objc highlight:0 decode:true\">- (instancetype)HJInit\r\n{\r\n    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(HJReceiveReleaseNotice) name:HJNSObjectNoticeName object:nil];\r\n    return [self HJInit];\r\n}\r\n\r\nMethod ori_Method =  class_getInstanceMethod([NSObject class], @selector(init));\r\nMethod HJ_Method = class_getInstanceMethod([NSObject class], @selector(HJInit));\r\nmethod_exchangeImplementations(ori_Method, HJ_Method);<\/pre>\n<p>\u57fa\u4e8eoc\u52a8\u6001\u8bed\u8a00\u7684\u7279\u6027\uff0c\u5728\u5bf9\u8c61init\u4e4b\u524d\u4e3a\u5bf9\u8c61\u521b\u5efa\u4e00\u4e2a\u901a\u77e5\u76d1\u542c\uff0c\u540c\u65f6\u5728\u5bf9\u8c61dealloc\u65f6\u5c06\u5176\u4ece\u76d1\u63a7\u4e2d\u79fb\u9664<\/p>\n<pre class=\"lang:objc highlight:0 decode:true\">- (void)HJDealloc\r\n{\r\n    [self HJRemoveObserver];\r\n    [self HJDealloc];\r\n}\r\n\r\n- (void)HJRemoveObserver\r\n{\r\n    [[NSNotificationCenter defaultCenter] removeObserver:self name:HJNSObjectNoticeName object:nil];\r\n}<\/pre>\n<p>\u6b64\u65f6\uff0c\u901a\u8fc7\u53d1\u9001\u901a\u77e5\uff0c\u90a3\u4e9b\u6cc4\u9732\u7684\u5bf9\u8c61\u7531\u4e8e\u6ca1\u6709\u8c03\u7528dealloc\u51fd\u6570\uff08\u6ca1\u6709\u5c06\u81ea\u5df1\u4ece\u76d1\u63a7\u4e2d\u79fb\u9664\uff09\u5c31\u4f1a\u5c06\u81ea\u5df1\u7684class\u6253\u5370\u5728\u63a7\u5236\u53f0\uff0c\u6240\u6709\u6cc4\u9732\u5bf9\u8c61\u4e00\u76ee\u4e86\u7136\u3002<\/p>\n<pre class=\"lang:objc highlight:0 decode:true\">+ (void)sendReleaseNotice\r\n{\r\n    @autoreleasepool {\r\n        HJNSObjectArray = [NSMutableArray array];\r\n        [[NSNotificationCenter defaultCenter] postNotificationName:HJNSObjectNoticeName object:nil];\r\n        NSLog(@\"HJNSObjectLeak: %@\", HJNSObjectArray);\r\n        [HJNSObjectArray removeAllObjects];\r\n    }\r\n}<\/pre>\n<p>\u53d1\u9001\u901a\u77e5\u53ef\u4ee5\u8bbe\u5b9a\u5728\u4efb\u610f\u65f6\u523b\uff0c\u6bd4\u8f83\u597d\u7684\u65b9\u5f0f\u662f\u5728AppDelegate\u5bf9\u8c61\u4e2d<\/p>\n<pre class=\"lang:objc highlight:0 decode:true\">- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {\r\n    [HJNSObjectRelease createReleaseObserver];\r\n    return YES;\r\n}\r\n\r\n- (void)applicationDidEnterBackground:(UIApplication *)application {\r\n    [HJNSObjectRelease sendReleaseNotice];\r\n}<\/pre>\n<h3><strong>\u4f7f\u7528\u65b9\u6cd5\uff1a<\/strong><\/h3>\n<p>\u4ee5\u6d4b\u8bd5view\u4e3a\u4f8b<\/p>\n<pre class=\"lang:objc highlight:0 decode:true\">- (IBAction)onViewTestClick:(id)sender\r\n{\r\n    \/\/\u9996\u5148\u901a\u8fc7\u8fdb\u5165\u540e\u53f0\u7684\u65b9\u5f0f\u6216\u624b\u52a8\u8c03\u7528\u65b9\u5f0f\u6e05\u7a7a\r\n    \/\/[HJNSObjectRelease sendReleaseNotice];\r\n\r\n    [HJReleaseView new];\r\n \r\n    \/\/\u7136\u540e\u4ee5\u76f8\u540c\u7684\u65b9\u5f0f\uff08\u8fdb\u5165\u540e\u53f0\u6216\u624b\u52a8\u8c03\u7528\uff09\u53d1\u9001\u6253\u5370\u901a\u77e5\r\n    \/\/[HJNSObjectRelease sendReleaseNotice];\r\n}<\/pre>\n<p>\u6b64\u65f6\u63a7\u5236\u53f0\u5c31\u4f1a\u5217\u51fa\u6cc4\u9732\u7684\u6240\u6709\u5bf9\u8c61\uff0c\u662f\u4e0d\u662f\u5f88\u7b80\u5355\uff01<\/p>\n<pre class=\"lang:default highlight:0 decode:true\">2014-10-21 23:53:06.898 HJNSObjectReleaseDemo[8519:154606] HJNSObjectLeak: (\r\n    HJReleaseView,\r\n    \"UIImageView-&gt;HJReleaseView\"\r\n)<\/pre>\n<hr \/>\n<p>PS\uff1aiOS9\u542f\u52a8\u5361\u6b7b\u95ee\u9898\u5df2\u4fee\u590d 2016\/3\/31<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Demo\uff1ahttps:\/\/github.com\/panghaijiao\/HJNSObjectReleaseDe\u2026 <span class=\"read-more\"><a href=\"http:\/\/www.olinone.com\/?p=25\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[],"_links":{"self":[{"href":"http:\/\/www.olinone.com\/index.php?rest_route=\/wp\/v2\/posts\/25"}],"collection":[{"href":"http:\/\/www.olinone.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.olinone.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.olinone.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.olinone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25"}],"version-history":[{"count":20,"href":"http:\/\/www.olinone.com\/index.php?rest_route=\/wp\/v2\/posts\/25\/revisions"}],"predecessor-version":[{"id":508,"href":"http:\/\/www.olinone.com\/index.php?rest_route=\/wp\/v2\/posts\/25\/revisions\/508"}],"wp:attachment":[{"href":"http:\/\/www.olinone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.olinone.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.olinone.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}