{"id":386,"date":"2016-04-28T13:38:57","date_gmt":"2016-04-28T05:38:57","guid":{"rendered":"http:\/\/www.jiandaima.com\/blog\/?p=386"},"modified":"2016-05-07T13:26:48","modified_gmt":"2016-05-07T05:26:48","slug":"%e8%b6%85%e5%85%a8%ef%bc%81ios-%e9%9d%a2%e8%af%95%e9%a2%98%e6%b1%87%e6%80%bb1-60","status":"publish","type":"post","link":"http:\/\/www.jiandaima.com\/blog\/archives\/386.html","title":{"rendered":"\u8d85\u5168\uff01iOS \u9762\u8bd5\u9898\u6c47\u603b(1-60)"},"content":{"rendered":"<p><a href=\"https:\/\/www.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg\" class=\"highslide-image\" onclick=\"return hs.expand(this);\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg\" alt=\"\u8d85\u5168\uff01iOS \u9762\u8bd5\u9898\u6c47\u603b\" width=\"500\" height=\"375\" class=\"aligncenter size-full wp-image-433\" \/><\/a><\/p>\n<p><strong>1. Object-c\u7684\u7c7b\u53ef\u4ee5\u591a\u91cd\u7ee7\u627f\u4e48?\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\u4e48?Category\u662f\u4ec0\u4e48?\u91cd\u5199\u4e00\u4e2a\u7c7b\u7684\u65b9\u5f0f\u7528\u7ee7\u627f\u597d\u8fd8\u662f\u5206\u7c7b\u597d?\u4e3a\u4ec0\u4e48?<\/strong><\/p>\n<p>\u7b54\uff1a Object-c\u7684\u7c7b\u4e0d\u53ef\u4ee5\u591a\u91cd\u7ee7\u627f;\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\uff0c\u901a\u8fc7\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\u53ef\u4ee5\u5b8c\u6210C++\u7684\u591a\u91cd\u7ee7\u627f;Category\u662f\u7c7b\u522b\uff0c\u4e00\u822c\u60c5\u51b5\u7528\u5206\u7c7b\u597d\uff0c\u7528Category\u53bb\u91cd\u5199\u7c7b\u7684\u65b9\u6cd5\uff0c\u4ec5\u5bf9\u672cCategory\u6709\u6548\uff0c\u4e0d\u4f1a\u5f71\u54cd\u5230\u5176\u4ed6\u7c7b\u4e0e\u539f\u6709\u7c7b\u7684\u5173\u7cfb\u3002<\/p>\n<p><strong>2. #import \u8ddf#include \u53c8\u4ec0\u4e48\u533a\u522b\uff0c@class\u5462, #import&lt;&gt; \u8ddf #import\"\"\u53c8\u4ec0\u4e48\u533a\u522b?<\/strong><\/p>\n<p>\u7b54\uff1a#import\u662fObjective-C\u5bfc\u5165\u5934\u6587\u4ef6\u7684\u5173\u952e\u5b57\uff0c#include\u662fC\/C++\u5bfc\u5165\u5934\u6587\u4ef6\u7684\u5173\u952e\u5b57,\u4f7f\u7528#import\u5934\u6587\u4ef6\u4f1a\u81ea\u52a8\u53ea\u5bfc\u5165\u4e00\u6b21\uff0c\u4e0d\u4f1a\u91cd\u590d\u5bfc\u5165\uff0c\u76f8\u5f53\u4e8e#include\u548c#pragma once;@class\u544a\u8bc9\u7f16\u8bd1\u5668\u67d0\u4e2a\u7c7b\u7684\u58f0\u660e\uff0c\u5f53\u6267\u884c\u65f6\uff0c\u624d\u53bb\u67e5\u770b\u7c7b\u7684\u5b9e\u73b0\u6587\u4ef6\uff0c\u53ef\u4ee5\u89e3\u51b3\u5934\u6587\u4ef6\u7684\u76f8\u4e92\u5305\u542b;#import&lt;&gt;\u7528\u6765\u5305\u542b\u7cfb\u7edf\u7684\u5934\u6587\u4ef6\uff0c#import\u201d\u201d\u7528\u6765\u5305\u542b\u7528\u6237\u5934\u6587\u4ef6\u3002<\/p>\n<p><strong>3. \u5c5e\u6027readwrite\uff0creadonly\uff0cassign\uff0cretain\uff0ccopy\uff0cnonatomic \u5404\u662f\u4ec0\u4e48\u4f5c\u7528\uff0c\u5728\u90a3\u79cd\u60c5\u51b5\u4e0b\u7528?<\/strong><\/p>\n<p>\u7b54\uff1a<\/p>\n<p>1). readwrite \u662f\u53ef\u8bfb\u53ef\u5199\u7279\u6027;\u9700\u8981\u751f\u6210getter\u65b9\u6cd5\u548csetter\u65b9\u6cd5\u65f6<\/p>\n<p>2). readonly \u662f\u53ea\u8bfb\u7279\u6027 \u53ea\u4f1a\u751f\u6210getter\u65b9\u6cd5 \u4e0d\u4f1a\u751f\u6210setter\u65b9\u6cd5 ;\u4e0d\u5e0c\u671b\u5c5e\u6027\u5728\u7c7b\u5916\u6539\u53d8<\/p>\n<p>3). assign \u662f\u8d4b\u503c\u7279\u6027\uff0csetter\u65b9\u6cd5\u5c06\u4f20\u5165\u53c2\u6570\u8d4b\u503c\u7ed9\u5b9e\u4f8b\u53d8\u91cf;\u4ec5\u8bbe\u7f6e\u53d8\u91cf\u65f6;<\/p>\n<p>4). retain \u8868\u793a\u6301\u6709\u7279\u6027\uff0csetter\u65b9\u6cd5\u5c06\u4f20\u5165\u53c2\u6570\u5148\u4fdd\u7559\uff0c\u518d\u8d4b\u503c\uff0c\u4f20\u5165\u53c2\u6570\u7684retaincount\u4f1a+1;<\/p>\n<p>5). copy \u8868\u793a\u8d4b\u503c\u7279\u6027\uff0csetter\u65b9\u6cd5\u5c06\u4f20\u5165\u5bf9\u8c61\u590d\u5236\u4e00\u4efd;\u9700\u8981\u5b8c\u5168\u4e00\u4efd\u65b0\u7684\u53d8\u91cf\u65f6\u3002<\/p>\n<p>6).nonatomic \u975e\u539f\u5b50\u64cd\u4f5c\uff0c\u51b3\u5b9a\u7f16\u8bd1\u5668\u751f\u6210\u7684setter getter\u662f\u5426\u662f\u539f\u5b50\u64cd\u4f5c\uff0catomic\u8868\u793a\u591a\u7ebf\u7a0b\u5b89\u5168\uff0c\u4e00\u822c\u4f7f\u7528nonatomic<\/p>\n<p><strong>4.\u5199\u4e00\u4e2asetter\u65b9\u6cd5\u7528\u4e8e\u5b8c\u6210@property (nonatomic,retain)NSString *name,\u5199\u4e00\u4e2asetter\u65b9\u6cd5\u7528\u4e8e\u5b8c\u6210@property(nonatomic\uff0ccopy)NSString *name<\/strong><\/p>\n<p>\u7b54\uff1a<\/p>\n<p>- (void) setName:(NSString*) str<\/p>\n<p>{<\/p>\n<p>[str retain];<\/p>\n<p>[name release];<\/p>\n<p>name = str;<\/p>\n<p>}<\/p>\n<p>- (void)setName:(NSString *)str<\/p>\n<p>{<\/p>\n<p>id t = [str copy];<\/p>\n<p>[name release];<\/p>\n<p>name = t;<\/p>\n<p>}<\/p>\n<p><strong>5.\u5bf9\u4e8e\u8bed\u53e5NSString*obj = [[NSData alloc] init]; obj\u5728\u7f16\u8bd1\u65f6\u548c\u8fd0\u884c\u65f6\u5206\u522b\u65f6\u4ec0\u4e48\u7c7b\u578b\u7684\u5bf9\u8c61?<\/strong><\/p>\n<p>\u7b54\uff1a \u7f16\u8bd1\u65f6\u662fNSString\u7684\u7c7b\u578b;\u8fd0\u884c\u65f6\u662fNSData\u7c7b\u578b\u7684\u5bf9\u8c61<\/p>\n<p><strong>6.\u5e38\u89c1\u7684object-c\u7684\u6570\u636e\u7c7b\u578b\u6709\u90a3\u4e9b\uff0c \u548cC\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\u6709\u4ec0\u4e48\u533a\u522b?\u5982\uff1aNSInteger\u548cint<\/strong><\/p>\n<p>\u7b54\uff1aobject-c\u7684\u6570\u636e\u7c7b\u578b\u6709NSString\uff0cNSNumber\uff0cNSArray\uff0cNSMutableArray\uff0cNSData\u7b49\u7b49\uff0c\u8fd9\u4e9b\u90fd\u662fclass\uff0c\u521b\u5efa\u540e\u4fbf\u662f\u5bf9\u8c61\uff0c\u800cC\u8bed\u8a00\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578bint\uff0c\u53ea\u662f\u4e00\u5b9a\u5b57\u8282\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u7528\u4e8e\u5b58\u653e\u6570\u503c;NSInteger\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u5e76\u4e0d\u662fNSNumber\u7684\u5b50\u7c7b\uff0c\u5f53\u7136\u4e5f\u4e0d\u662fNSObject\u7684\u5b50\u7c7b\u3002NSInteger\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578bInt\u6216\u8005Long\u7684\u522b\u540d(NSInteger\u7684\u5b9a\u4e49typedef long NSInteger)\uff0c\u5b83\u7684\u533a\u522b\u5728\u4e8e\uff0cNSInteger\u4f1a\u6839\u636e\u7cfb\u7edf\u662f32\u4f4d\u8fd8\u662f64\u4f4d\u6765\u51b3\u5b9a\u662f\u672c\u8eab\u662fint\u8fd8\u662fLong\u3002<\/p>\n<p><strong>7.id \u58f0\u660e\u7684\u5bf9\u8c61\u6709\u4ec0\u4e48\u7279\u6027?<\/strong><\/p>\n<p>\u7b54\uff1aId \u58f0\u660e\u7684\u5bf9\u8c61\u5177\u6709\u8fd0\u884c\u65f6\u7684\u7279\u6027\uff0c\u5373\u53ef\u4ee5\u6307\u5411\u4efb\u610f\u7c7b\u578b\u7684objcetive-c\u7684\u5bf9\u8c61;<\/p>\n<p><strong>8.Objective-C\u5982\u4f55\u5bf9\u5185\u5b58\u7ba1\u7406\u7684?<\/strong><\/p>\n<p>\u7b54\uff1aObjective-C\u7684\u5185\u5b58\u7ba1\u7406\u4e3b\u8981\u6709\u4e09\u79cd\u65b9\u5f0fARC(\u81ea\u52a8\u5f15\u7528\u8ba1\u6570)\u3001MRC(\u624b\u52a8\u5185\u5b58\u8ba1\u6570)\u3001autorelease(\u81ea\u52a8\u91ca\u653e\u6c60)\u3002<\/p>\n<p><strong>9. \u539f\u5b50(atomic)\u8ddf\u975e\u539f\u5b50(non-atomic)\u5c5e\u6027\u6709\u4ec0\u4e48\u533a\u522b?<\/strong><\/p>\n<p>\u7b54\uff1a<\/p>\n<p>1). atomic\u63d0\u4f9b\u591a\u7ebf\u7a0b\u5b89\u5168\u3002\u662f\u9632\u6b62\u5728\u5199\u672a\u5b8c\u6210\u7684\u65f6\u5019\u88ab\u53e6\u5916\u4e00\u4e2a\u7ebf\u7a0b\u8bfb\u53d6\uff0c\u9020\u6210\u6570\u636e\u9519\u8bef<\/p>\n<p>2). non-atomic:\u5728\u81ea\u5df1\u7ba1\u7406\u5185\u5b58\u7684\u73af\u5883\u4e2d\uff0c\u89e3\u6790\u7684\u8bbf\u95ee\u5668\u4fdd\u7559\u5e76\u81ea\u52a8\u91ca\u653e\u8fd4\u56de\u7684\u503c\uff0c\u5982\u679c\u6307\u5b9a\u4e86 nonatomic \uff0c\u90a3\u4e48\u8bbf\u95ee\u5668\u53ea\u662f\u7b80\u5355\u5730\u8fd4\u56de\u8fd9\u4e2a\u503c\u3002<\/p>\n<p><strong>11. \u5185\u5b58\u7ba1\u7406\u7684\u51e0\u6761\u539f\u5219\u65f6\u4ec0\u4e48?\u6309\u7167\u9ed8\u8ba4\u6cd5\u5219.\u90a3\u4e9b\u5173\u952e\u5b57\u751f\u6210\u7684\u5bf9\u8c61\u9700\u8981\u624b\u52a8\u91ca\u653e?\u5728\u548cproperty\u7ed3\u5408\u7684\u65f6\u5019\u600e\u6837\u6709\u6548\u7684\u907f\u514d\u5185\u5b58\u6cc4\u9732?<\/strong><\/p>\n<p>\u7b54\uff1a\u8c01\u7533\u8bf7\uff0c\u8c01\u91ca\u653e<\/p>\n<p>\u9075\u5faaCocoa Touch\u7684\u4f7f\u7528\u539f\u5219;<\/p>\n<p>\u5185\u5b58\u7ba1\u7406\u4e3b\u8981\u8981\u907f\u514d\u201c\u8fc7\u65e9\u91ca\u653e\u201d\u548c\u201c\u5185\u5b58\u6cc4\u6f0f\u201d\uff0c\u5bf9\u4e8e\u201c\u8fc7\u65e9\u91ca\u653e\u201d\u9700\u8981\u6ce8\u610f@property\u8bbe\u7f6e\u7279\u6027\u65f6\uff0c\u4e00\u5b9a\u8981\u7528\u5bf9\u7279\u6027\u5173\u952e\u5b57\uff0c\u5bf9\u4e8e\u201c\u5185\u5b58\u6cc4\u6f0f\u201d\uff0c\u4e00\u5b9a\u8981\u7533\u8bf7\u4e86\u8981\u8d1f\u8d23\u91ca\u653e\uff0c\u8981\u7ec6\u5fc3\u3002<\/p>\n<p>\u5173\u952e\u5b57alloc \u6216new \u751f\u6210\u7684\u5bf9\u8c61\u9700\u8981\u624b\u52a8\u91ca\u653e;<\/p>\n<p>\u8bbe\u7f6e\u6b63\u786e\u7684property\u5c5e\u6027\uff0c\u5bf9\u4e8eretain\u9700\u8981\u5728\u5408\u9002\u7684\u5730\u65b9\u91ca\u653e\uff0c<\/p>\n<p><strong>12.\u5982\u4f55\u5bf9iOS\u8bbe\u5907\u8fdb\u884c\u6027\u80fd\u6d4b\u8bd5?<\/strong><\/p>\n<p>\u7b54\uff1a Profile-&gt; Instruments -&gt;Time Profiler<\/p>\n<p><strong>13. Object C\u4e2d\u521b\u5efa\u7ebf\u7a0b\u7684\u65b9\u6cd5\u662f\u4ec0\u4e48?\u5982\u679c\u5728\u4e3b\u7ebf\u7a0b\u4e2d\u6267\u884c\u4ee3\u7801\uff0c\u65b9\u6cd5\u662f\u4ec0\u4e48?\u5982\u679c\u60f3\u5ef6\u65f6\u6267\u884c\u4ee3\u7801\u3001\u65b9\u6cd5\u53c8\u662f\u4ec0\u4e48?<\/strong><\/p>\n<p>\u7b54\uff1a\u7ebf\u7a0b\u521b\u5efa\u6709\u4e09\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528NSThread\u521b\u5efa\u3001\u4f7f\u7528GCD\u7684dispatch\u3001\u4f7f\u7528\u5b50\u7c7b\u5316\u7684NSOperation,\u7136\u540e\u5c06\u5176\u52a0\u5165NSOperationQueue;\u5728\u4e3b\u7ebf\u7a0b\u6267\u884c\u4ee3\u7801\uff0c\u65b9\u6cd5\u662fperformSelectorOnMainThread\uff0c\u5982\u679c\u60f3\u5ef6\u65f6\u6267\u884c\u4ee3\u7801\u53ef\u4ee5\u7528performSelector:onThread:withObject:waitUntilDone:<\/p>\n<p><strong>14. MVC\u8bbe\u8ba1\u6a21\u5f0f\u662f\u4ec0\u4e48\uff1f \u4f60\u8fd8\u719f\u6089\u4ec0\u4e48\u8bbe\u8ba1\u6a21\u5f0f\uff1f<\/strong><\/p>\n<p>\u7b54\uff1a<\/p>\n<p>\u8bbe\u8ba1\u6a21\u5f0f\uff1a\u5e76\u4e0d\u662f\u4e00\u79cd\u65b0\u6280\u672f\uff0c\u800c\u662f\u4e00\u79cd\u7f16\u7801\u7ecf\u9a8c\uff0c\u4f7f\u7528\u6bd4\u5982java\u4e2d\u7684\u63a5\u53e3\uff0ciphone\u4e2d\u7684\u534f\u8bae\uff0c\u7ee7\u627f\u5173\u7cfb\u7b49\u57fa\u672c\u624b\u6bb5\uff0c\u7528\u6bd4\u8f83\u6210\u719f\u7684\u903b\u8f91\u53bb\u5904\u7406\u67d0\u4e00\u79cd\u7c7b\u578b\u7684\u4e8b\u60c5\uff0c\u603b\u7ed3\u4e3a\u6240\u8c13\u8bbe\u8ba1\u6a21\u5f0f\u3002\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u4e2d\uff0cjava\u5df2\u7ecf\u5f52\u7eb3\u4e8623\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n<p>mvc\u8bbe\u8ba1\u6a21\u5f0f \uff1a\u6a21\u578b\uff0c\u89c6\u56fe\uff0c\u63a7\u5236\u5668\uff0c\u53ef\u4ee5\u5c06\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u5728\u601d\u60f3\u4e0a\u5206\u6210\u4e09\u5927\u5757\uff0c\u5bf9\u5e94\u662f\u7684\u6570\u636e\u7684\u5b58\u50a8\u6216\u5904\u7406\uff0c\u524d\u53f0\u7684\u663e\u793a\uff0c\u4e1a\u52a1\u903b\u8f91\u7684\u63a7\u5236\u3002 Iphone\u672c\u8eab\u7684\u8bbe\u8ba1\u601d\u60f3\u5c31\u662f\u9075\u5faamvc\u8bbe\u8ba1\u6a21\u5f0f\u3002\u5176\u4e0d\u5c5e\u4e8e23\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u8303\u7574\u3002<\/p>\n<p>\u4ee3\u7406\u6a21\u5f0f\uff1a\u4ee3\u7406\u6a21\u5f0f\u7ed9\u67d0\u4e00\u4e2a\u5bf9\u8c61\u63d0\u4f9b\u4e00\u4e2a\u4ee3\u7406\u5bf9\u8c61\uff0c\u5e76\u7531\u4ee3\u7406\u5bf9\u8c61\u63a7\u5236\u5bf9\u6e90\u5bf9\u8c61\u7684\u5f15\u7528.\u6bd4\u5982\u4e00\u4e2a\u5de5\u5382\u751f\u4ea7\u4e86\u4ea7\u54c1\uff0c\u5e76\u4e0d\u60f3\u76f4\u63a5\u5356\u7ed9\u7528\u6237\uff0c\u800c\u662f\u641e\u4e86\u5f88\u591a\u4ee3\u7406\u5546\uff0c\u7528\u6237\u53ef\u4ee5\u76f4\u63a5\u627e\u4ee3\u7406\u5546\u4e70\u4e1c\u897f\uff0c\u4ee3\u7406\u5546\u4ece\u5de5\u5382\u8fdb\u8d27.\u5e38\u89c1\u7684\u5982QQ\u7684\u81ea\u52a8\u56de\u590d\u5c31\u5c5e\u4e8e\u4ee3\u7406\u62e6\u622a\uff0c\u4ee3\u7406\u6a21\u5f0f\u5728iphone\u4e2d\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528.<\/p>\n<p>\u5355\u4f8b\u6a21\u5f0f\uff1a\u8bf4\u767d\u4e86\u5c31\u662f\u4e00\u4e2a\u7c7b\u4e0d\u901a\u8fc7alloc\u65b9\u5f0f\u521b\u5efa\u5bf9\u8c61\uff0c\u800c\u662f\u7528\u4e00\u4e2a\u9759\u6001\u65b9\u6cd5\u8fd4\u56de\u8fd9\u4e2a\u7c7b\u7684\u5bf9\u8c61\u3002\u7cfb\u7edf\u53ea\u9700\u8981\u62e5\u6709\u4e00\u4e2a\u7684\u5168\u5c40\u5bf9\u8c61\uff0c\u8fd9\u6837\u6709\u5229\u4e8e\u6211\u4eec\u534f\u8c03\u7cfb\u7edf\u6574\u4f53\u7684\u884c\u4e3a\uff0c\u6bd4\u5982\u60f3\u83b7\u5f97[UIApplication sharedApplication];\u4efb\u4f55\u5730\u65b9\u8c03\u7528\u90fd\u53ef\u4ee5\u5f97\u5230 UIApplication\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e2a\u5bf9\u8c61\u662f\u5168\u5c40\u552f\u4e00\u7684\u3002<\/p>\n<p>\u89c2\u5bdf\u8005\u6a21\u5f0f\uff1a \u5f53\u4e00\u4e2a\u7269\u4f53\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u4f1a\u901a\u77e5\u6240\u6709\u89c2\u5bdf\u8fd9\u4e2a\u7269\u4f53\u7684\u89c2\u5bdf\u8005\u8ba9\u5176\u505a\u51fa\u53cd\u5e94\u3002\u5b9e\u73b0\u8d77\u6765\u65e0\u975e\u5c31\u662f\u628a\u6240\u6709\u89c2\u5bdf\u8005\u7684\u5bf9\u8c61\u7ed9\u8fd9\u4e2a\u7269\u4f53\uff0c\u5f53\u8fd9\u4e2a\u7269\u4f53\u7684\u53d1\u751f\u6539\u53d8\uff0c\u5c31\u4f1a\u8c03\u7528\u904d\u5386\u6240\u6709\u89c2\u5bdf\u8005\u7684\u5bf9\u8c61\u8c03\u7528\u89c2\u5bdf\u8005\u7684\u65b9\u6cd5\u4ece\u800c\u8fbe\u5230\u901a\u77e5\u89c2\u5bdf\u8005\u7684\u76ee\u7684\u3002<\/p>\n<p>\u5de5\u5382\u6a21\u5f0f\uff1a<\/p>\n<p>public class Factory{<\/p>\n<p>public static Sample creator(int which){<\/p>\n<p>if (which==1)<\/p>\n<p>return new SampleA();<\/p>\n<p>else if (which==2)<\/p>\n<p>return new SampleB();<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p><strong>15 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protocol\u4e2d\u7684\u65b9\u6cd5\u5c5e\u4e8e\u8bbe\u8ba1\u6a21\u5f0f\u8003\u8651\u8303\u7574\uff0c\u4e0d\u662f\u5fc5\u987b\u5b9e\u73b0\u7684\uff0c\u4f46\u662f\u5982\u679c\u6709\u5b9e\u73b0\uff0c\u5c31\u4f1a\u6539\u53d8\u7c7b\u7684\u5c5e\u6027\u3002<\/p>\n<p>\u5176\u5b9e\u5173\u4e8e\u6b63\u5f0f\u534f\u8bae\uff0c\u7c7b\u522b\u548c\u975e\u6b63\u5f0f\u534f\u8bae\u6211\u5f88\u65e9\u524d\u5b66\u4e60\u7684\u65f6\u5019\u5927\u81f4\u770b\u8fc7\uff0c\u4e5f\u5199\u5728\u4e86\u5b66\u4e60\u6559\u7a0b\u91cc<\/p>\n<p>\u201c\u975e\u6b63\u5f0f\u534f\u8bae\u6982\u5ff5\u5176\u5b9e\u5c31\u662f\u7c7b\u522b\u7684\u53e6\u4e00\u79cd\u8868\u8fbe\u65b9\u5f0f\u201c\u8fd9\u91cc\u6709\u4e00\u4e9b\u4f60\u53ef\u80fd\u5e0c\u671b\u5b9e\u73b0\u7684\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ed6\u4eec\u66f4\u597d\u7684\u5b8c\u6210\u5de5\u4f5c\u201d\u3002<\/p>\n<p>\u8fd9\u4e2a\u610f\u601d\u662f\uff0c\u8fd9\u4e9b\u662f\u53ef\u9009\u7684\u3002\u6bd4\u5982\u6211\u95e8\u8981\u4e00\u4e2a\u66f4\u597d\u7684\u65b9\u6cd5\uff0c\u6211\u4eec\u5c31\u4f1a\u7533\u660e\u4e00\u4e2a\u8fd9\u6837\u7684\u7c7b\u522b\u53bb\u5b9e\u73b0\u3002\u7136\u540e\u4f60\u5728\u540e\u671f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e9b\u66f4\u597d\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u8fd9\u4e48\u770b\uff0c\u603b\u89c9\u5f97\u7c7b\u522b\u8fd9\u73a9\u610f\u513f\u6709\u70b9\u50cf\u534f\u8bae\u7684\u53ef\u9009\u534f\u8bae\u3002\u201d<\/p>\n<p>\u73b0\u5728\u6765\u770b\uff0c\u5176\u5b9eprotocal\u5df2\u7ecf\u5f00\u59cb\u5bf9\u4e24\u8005\u90fd\u7edf\u4e00\u548c\u89c4\u8303\u8d77\u6765\u64cd\u4f5c\uff0c\u56e0\u4e3a\u8d44\u6599\u4e2d\u8bf4\u201c\u975e\u6b63\u5f0f\u534f\u8bae\u4f7f\u7528interface\u4fee\u9970\u201c\uff0c<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u770b\u5230\u534f\u8bae\u4e2d\u4e24\u4e2a\u4fee\u9970\u8bcd\uff1a\u201c\u5fc5\u987b\u5b9e\u73b0(@requied)\u201d\u548c\u201c\u53ef\u9009\u5b9e\u73b0(@optional)\u201d\u3002<\/p>\n<p><strong>19. \u4ec0\u4e48\u662fKVO\u548cKVC?<\/strong><\/p>\n<p>\u7b54\uff1aKVC:\u952e \u2013 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addObserver:self forKeyPath:@\"highlighted\" options:0 context:nil];<\/p>\n<p>#pragma mark KVO<\/p>\n<p>- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context<\/p>\n<p>{<\/p>\n<p>if ([keyPath isEqualToString:@\"highlighted\"] ) {<\/p>\n<p>[self setNeedsDisplay];<\/p>\n<p>}<\/p>\n<p>}<\/p>\n<p>\u5bf9\u4e8e\u7cfb\u7edf\u662f\u6839\u636ekeypath\u53bb\u53d6\u7684\u5230\u76f8\u5e94\u7684\u503c\u53d1\u751f\u6539\u53d8\uff0c\u7406\u8bba\u4e0a\u6765\u8bf4\u662f\u548ckvc\u673a\u5236\u7684\u9053\u7406\u662f\u4e00\u6837\u7684\u3002<\/p>\n<p>\u5bf9\u4e8ekvc\u673a\u5236\u5982\u4f55\u901a\u8fc7key\u5bfb\u627e\u5230value\uff1a<\/p>\n<p>\u201c\u5f53\u901a\u8fc7KVC\u8c03\u7528\u5bf9\u8c61\u65f6\uff0c\u6bd4\u5982\uff1a[self valueForKey:@\u201dsomeKey\u201d]\u65f6\uff0c\u7a0b\u5e8f\u4f1a\u81ea\u52a8\u8bd5\u56fe\u901a\u8fc7\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u5f0f\u89e3\u6790\u8fd9\u4e2a\u8c03\u7528\u3002\u9996\u5148\u67e5\u627e\u5bf9\u8c61\u662f\u5426\u5e26\u6709 someKey \u8fd9\u4e2a\u65b9\u6cd5\uff0c\u5982\u679c\u6ca1\u627e\u5230\uff0c\u4f1a\u7ee7\u7eed\u67e5\u627e\u5bf9\u8c61\u662f\u5426\u5e26\u6709someKey\u8fd9\u4e2a\u5b9e\u4f8b\u53d8\u91cf(iVar)\uff0c\u5982\u679c\u8fd8\u6ca1\u6709\u627e\u5230\uff0c\u7a0b\u5e8f\u4f1a\u7ee7\u7eed\u8bd5\u56fe\u8c03\u7528 -(id) valueForUndefinedKey:\u8fd9\u4e2a\u65b9\u6cd5\u3002\u5982\u679c\u8fd9\u4e2a\u65b9\u6cd5\u8fd8\u662f\u6ca1\u6709\u88ab\u5b9e\u73b0\u7684\u8bdd\uff0c\u7a0b\u5e8f\u4f1a\u629b\u51fa\u4e00\u4e2aNSUndefinedKeyException\u5f02\u5e38\u9519\u8bef\u3002<\/p>\n<p>(cocoachina.com\u6ce8\uff1aKey-Value Coding\u67e5\u627e\u65b9\u6cd5\u7684\u65f6\u5019\uff0c\u4e0d\u4ec5\u4ec5\u4f1a\u67e5\u627esomeKey\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u8fd8\u4f1a\u67e5\u627egetsomeKey\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u524d\u9762\u52a0\u4e00\u4e2aget\uff0c\u6216\u8005_someKey\u4ee5\u53ca_getsomeKey\u8fd9\u51e0\u79cd\u5f62\u5f0f\u3002\u540c\u65f6\uff0c\u67e5\u627e\u5b9e\u4f8b\u53d8\u91cf\u7684\u65f6\u5019\u4e5f\u4f1a\u4e0d\u4ec5\u4ec5\u67e5\u627esomeKey\u8fd9\u4e2a\u53d8\u91cf\uff0c\u4e5f\u4f1a\u67e5\u627e_someKey\u8fd9\u4e2a\u53d8\u91cf\u662f\u5426\u5b58\u5728\u3002)<\/p>\n<p>\u8bbe\u8ba1valueForUndefinedKey:\u65b9\u6cd5\u7684\u4e3b\u8981\u76ee\u7684\u662f\u5f53\u4f60\u4f7f\u7528-(id)valueForKey\u65b9\u6cd5\u4ece\u5bf9\u8c61\u4e2d\u8bf7\u6c42\u503c\u65f6\uff0c\u5bf9\u8c61\u80fd\u591f\u5728\u9519\u8bef\u53d1\u751f\u524d\uff0c\u6709\u6700\u540e\u7684\u673a\u4f1a\u54cd\u5e94\u8fd9\u4e2a\u8bf7\u6c42\u3002\u8fd9\u6837\u505a\u6709\u5f88\u591a\u597d\u5904\uff0c\u4e0b\u9762\u7684\u4e24\u4e2a\u4f8b\u5b50\u8bf4\u660e\u4e86\u8fd9\u6837\u505a\u7684\u597d\u5904\u3002\u201c<\/p>\n<p>\u6765\u81f3cocoa\uff0c\u8fd9\u4e2a\u8bf4\u6cd5\u5e94\u8be5\u633a\u6709\u9053\u7406\u3002<\/p>\n<p>\u56e0\u4e3a\u6211\u4eec\u77e5\u9053button\u5374\u662f\u5b58\u5728\u4e00\u4e2ahighlighted\u5b9e\u4f8b\u53d8\u91cf.\u56e0\u6b64\u4e3a\u4f55\u4e0a\u9762\u6211\u4eec\u53ea\u662fadd\u4e00\u4e2a\u76f8\u5173\u7684keypath\u5c31\u884c\u4e86\uff0c<\/p>\n<p>\u53ef\u4ee5\u6309\u7167kvc\u67e5\u627e\u7684\u903b\u8f91\u7406\u89e3\uff0c\u5c31\u8bf4\u7684\u8fc7\u53bb\u4e86\u3002<\/p>\n<p><strong>20. 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oc\u4e2d\u53ef\u4fee\u6539\u548c\u4e0d\u53ef\u4ee5\u4fee\u6539\u7c7b\u578b\u3002<\/strong><\/p>\n<p>\u7b54\uff1a\u53ef\u4fee\u6539\u4e0d\u53ef\u4fee\u6539\u7684\u96c6\u5408\u7c7b\u3002\u8fd9\u4e2a\u6211\u4e2a\u4eba\u7b80\u5355\u7406\u89e3\u5c31\u662f\u53ef\u52a8\u6001\u6dfb\u52a0\u4fee\u6539\u548c\u4e0d\u53ef\u52a8\u6001\u6dfb\u52a0\u4fee\u6539\u4e00\u6837\u3002<\/p>\n<p>\u6bd4\u5982NSArray\u548cNSMutableArray\u3002\u524d\u8005\u5728\u521d\u59cb\u5316\u540e\u7684\u5185\u5b58\u63a7\u4ef6\u5c31\u662f\u56fa\u5b9a\u4e0d\u53ef\u53d8\u7684\uff0c\u540e\u8005\u53ef\u4ee5\u6dfb\u52a0\u7b49\uff0c\u53ef\u4ee5\u52a8\u6001\u7533\u8bf7\u65b0\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/p>\n<p><strong>22. \u6211\u4eec\u8bf4\u7684oc\u662f\u52a8\u6001\u8fd0\u884c\u65f6\u8bed\u8a00\u662f\u4ec0\u4e48\u610f\u601d?<\/strong><\/p>\n<p>\u7b54\uff1a\u591a\u6001\u3002 \u4e3b\u8981\u662f\u5c06\u6570\u636e\u7c7b\u578b\u7684\u786e\u5b9a\u7531\u7f16\u8bd1\u65f6\uff0c\u63a8\u8fdf\u5230\u4e86\u8fd0\u884c\u65f6\u3002<\/p>\n<p>\u8fd9\u4e2a\u95ee\u9898\u5176\u5b9e\u6d45\u6d89\u53ca\u5230\u4e24\u4e2a\u6982\u5ff5\uff0c\u8fd0\u884c\u65f6\u548c\u591a\u6001\u3002<\/p>\n<p>\u7b80\u5355\u6765\u8bf4\uff0c\u8fd0\u884c\u65f6\u673a\u5236\u4f7f\u6211\u4eec\u76f4\u5230\u8fd0\u884c\u65f6\u624d\u53bb\u51b3\u5b9a\u4e00\u4e2a\u5bf9\u8c61\u7684\u7c7b\u522b\uff0c\u4ee5\u53ca\u8c03\u7528\u8be5\u7c7b\u522b\u5bf9\u8c61\u6307\u5b9a\u65b9\u6cd5\u3002<\/p>\n<p>\u591a\u6001\uff1a\u4e0d\u540c\u5bf9\u8c61\u4ee5\u81ea\u5df1\u7684\u65b9\u5f0f\u54cd\u5e94\u76f8\u540c\u7684\u6d88\u606f\u7684\u80fd\u529b\u53eb\u505a\u591a\u6001\u3002\u610f\u601d\u5c31\u662f\u5047\u8bbe\u751f\u7269\u7c7b(life)\u90fd\u7528\u6709\u4e00\u4e2a\u76f8\u540c\u7684\u65b9\u6cd5-eat;<\/p>\n<p>\u90a3\u4eba\u7c7b\u5c5e\u4e8e\u751f\u7269\uff0c\u732a\u4e5f\u5c5e\u4e8e\u751f\u7269\uff0c\u90fd\u7ee7\u627f\u4e86life\u540e\uff0c\u5b9e\u73b0\u5404\u81ea\u7684eat\uff0c\u4f46\u662f\u8c03\u7528\u662f\u6211\u4eec\u53ea\u9700\u8c03\u7528\u5404\u81ea\u7684eat\u65b9\u6cd5\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u4e0d\u540c\u7684\u5bf9\u8c61\u4ee5\u81ea\u5df1\u7684\u65b9\u5f0f\u54cd\u5e94\u4e86\u76f8\u540c\u7684\u6d88\u606f(\u54cd\u5e94\u4e86eat\u8fd9\u4e2a\u9009\u62e9\u5668)\u3002<\/p>\n<p>\u56e0\u6b64\u4e5f\u53ef\u4ee5\u8bf4\uff0c\u8fd0\u884c\u65f6\u673a\u5236\u662f\u591a\u6001\u7684\u57fa\u7840?~~~<\/p>\n<p><strong>23. 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\u4ec0\u4e48\u662f\u63a8\u9001\u6d88\u606f?<\/strong><\/p>\n<p>\u7b54\uff1a\u63a8\u9001\u901a\u77e5\u66f4\u662f\u4e00\u79cd\u6280\u672f\u3002<\/p>\n<p>\u7b80\u5355\u70b9\u5c31\u662f\u5ba2\u6237\u7aef\u83b7\u53d6\u8d44\u6e90\u7684\u4e00\u79cd\u624b\u6bb5\u3002<\/p>\n<p>\u666e\u901a\u60c5\u51b5\u4e0b\uff0c\u90fd\u662f\u5ba2\u6237\u7aef\u4e3b\u52a8\u7684pull\u3002<\/p>\n<p>\u63a8\u9001\u5219\u662f\u670d\u52a1\u5668\u7aef\u4e3b\u52a8push\u3002 \u6d4b\u8bd5push\u7684\u5b9e\u73b0\u53ef\u4ee5\u67e5\u770b\u8be5\u535a\u6587\u3002<\/p>\n<p><strong>25. \u5173\u4e8e\u591a\u6001\u6027<\/strong><\/p>\n<p>\u7b54\uff1a\u591a\u6001\uff0c\u5b50\u7c7b\u6307\u9488\u53ef\u4ee5\u8d4b\u503c\u7ed9\u7236\u7c7b\u3002<\/p>\n<p>\u8fd9\u4e2a\u9898\u76ee\u5176\u5b9e\u53ef\u4ee5\u51fa\u5230\u4e00\u5207\u9762\u5411\u5bf9\u8c61\u8bed\u8a00\u4e2d\uff0c<\/p>\n<p>\u56e0\u6b64\u5173\u4e8e\u591a\u6001\uff0c\u7ee7\u627f\u548c\u5c01\u88c5\u57fa\u672c\u6700\u597d\u90fd\u6709\u4e2a\u81ea\u6211\u610f\u8bc6\u7684\u7406\u89e3\uff0c\u4e5f\u5e76\u975e\u4e00\u5b9a\u8981\u628a\u4e66\u4e0a\u8d44\u6599\u4e0a\u5199\u7684\u80fd\u80cc\u51fa\u6765<\/p>\n<p><strong>26. \u5bf9\u4e8e\u5355\u4f8b\u7684\u7406\u89e3<\/strong><\/p>\n<p>\u7b54\uff1a\u5728objective-c\u4e2d\u8981\u5b9e\u73b0\u4e00\u4e2a\u5355\u4f8b\u7c7b\uff0c\u81f3\u5c11\u9700\u8981\u505a\u4ee5\u4e0b\u56db\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<p>1).\u4e3a\u5355\u4f8b\u5bf9\u8c61\u5b9e\u73b0\u4e00\u4e2a\u9759\u6001\u5b9e\u4f8b\uff0c\u5e76\u521d\u59cb\u5316\uff0c\u7136\u540e\u8bbe\u7f6e\u6210nil\uff0c<\/p>\n<p>2).\u5b9e\u73b0\u4e00\u4e2a\u5b9e\u4f8b\u6784\u9020\u65b9\u6cd5\u68c0\u67e5\u4e0a\u9762\u58f0\u660e\u7684\u9759\u6001\u5b9e\u4f8b\u662f\u5426\u4e3anil\uff0c\u5982\u679c\u662f\u5219\u65b0\u5efa\u5e76\u8fd4\u56de\u4e00\u4e2a\u672c\u7c7b\u7684\u5b9e\u4f8b\uff0c<\/p>\n<p>3).\u91cd\u5199allocWithZone\u65b9\u6cd5\uff0c\u7528\u6765\u4fdd\u8bc1\u5176\u4ed6\u4eba\u76f4\u63a5\u4f7f\u7528alloc\u548cinit\u8bd5\u56fe\u83b7\u5f97\u4e00\u4e2a\u65b0\u5b9e\u529b\u7684\u65f6\u5019\u4e0d\u4ea7\u751f\u4e00\u4e2a\u65b0\u5b9e\u4f8b\uff0c<\/p>\n<p>4).\u9002\u5f53\u5b9e\u73b0allocWitheZone\uff0ccopyWithZone\uff0crelease\u548cautorelease\u3002<\/p>\n<p><strong>27. 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frame\u548cbounds\u6709\u4ec0\u4e48\u4e0d\u540c?<\/strong><\/p>\n<p>\u7b54:frame\u6307\u7684\u662f\uff1a\u8be5view\u5728\u7236view\u5750\u6807\u7cfb\u7edf\u4e2d\u7684\u4f4d\u7f6e\u548c\u5927\u5c0f\u3002(\u53c2\u7167\u70b9\u662f\u7236\u4eb2\u7684\u5750\u6807\u7cfb\u7edf)<\/p>\n<p>bounds\u6307\u7684\u662f\uff1a\u8be5view\u5728\u672c\u8eab\u5750\u6807\u7cfb\u7edf\u4e2d \u7684\u4f4d\u7f6e\u548c\u5927\u5c0f\u3002(\u53c2\u7167\u70b9\u662f\u672c\u8eab\u5750\u6807\u7cfb\u7edf)<\/p>\n<p><strong>29. \u65b9\u6cd5\u548c\u9009\u62e9\u5668\u6709\u4f55\u4e0d\u540c?<\/strong><\/p>\n<p>\u7b54\uff1aselector\u662f\u4e00\u4e2a\u65b9\u6cd5\u7684\u540d\u5b57\uff0cmethod\u662f\u4e00\u4e2a\u7ec4\u5408\u4f53\uff0c\u5305\u542b\u4e86\u540d\u5b57\u548c\u5b9e\u73b0.<\/p>\n<p>\u8be6\u60c5\u53ef\u4ee5\u770bapple\u6587\u6863\u3002<\/p>\n<p><strong>30. OC\u7684\u5783\u573e\u56de\u6536\u673a\u5236?<\/strong><\/p>\n<p>\u7b54\uff1a OC2.0\u6709Garbage collection\uff0c\u4f46\u662fiOS\u5e73\u53f0\u4e0d\u63d0\u4f9b\u3002<\/p>\n<p>\u4e00\u822c\u6211\u4eec\u4e86\u89e3\u7684objective-c\u5bf9\u4e8e\u5185\u5b58\u7ba1\u7406\u90fd\u662f\u624b\u52a8\u64cd\u4f5c\u7684\uff0c\u4f46\u662f\u4e5f\u6709\u81ea\u52a8\u91ca\u653e\u6c60\u3002<\/p>\n<p>\u4f46\u662f\u5dee\u4e86\u5927\u90e8\u5206\u8d44\u6599\uff0c\u8c8c\u4f3c\u4e0d\u8981\u548carc\u673a\u5236\u641e\u6df7\u5c31\u597d\u4e86\u3002<\/p>\n<p><strong>31. NSOperation 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\u4ec0\u4e48\u662f\u5ef6\u8fdf\u52a0\u8f7d?<\/strong><\/p>\n<p>\u7b54\uff1a\u61d2\u6c49\u6a21\u5f0f\uff0c\u53ea\u5728\u7528\u5230\u7684\u65f6\u5019\u624d\u53bb\u521d\u59cb\u5316\u3002<\/p>\n<p>\u4e5f\u53ef\u4ee5\u7406\u89e3\u6210\u5ef6\u65f6\u52a0\u8f7d\u3002<\/p>\n<p>\u6211\u89c9\u5f97\u6700\u597d\u4e5f\u6700\u7b80\u5355\u7684\u4e00\u4e2a\u5217\u5b50\u5c31\u662ftableView\u4e2d\u56fe\u7247\u7684\u52a0\u8f7d\u663e\u793a\u4e86\u3002<\/p>\n<p>\u4e00\u4e2a\u5ef6\u65f6\u8f7d\uff0c\u907f\u514d\u5185\u5b58\u8fc7\u9ad8\uff0c\u4e00\u4e2a\u5f02\u6b65\u52a0\u8f7d\uff0c\u907f\u514d\u7ebf\u7a0b\u5835\u585e\u3002<\/p>\n<p><strong>33. 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*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;<\/p>\n<p><strong>37. \u5728\u5e94\u7528\u4e2d\u53ef\u4ee5\u521b\u5efa\u591a\u5c11autorelease\u5bf9\u8c61\uff0c\u662f\u5426\u6709\u9650\u5236?<\/strong><\/p>\n<p>\u7b54\u6848\uff1a\u65e0<\/p>\n<p><strong>38. \u5982\u679c\u6211\u4eec\u4e0d\u521b\u5efa\u5185\u5b58\u6c60\uff0c\u662f\u5426\u6709\u5185\u5b58\u6c60\u63d0\u4f9b\u7ed9\u6211\u4eec?<\/strong><\/p>\n<p>\u7b54:\u754c\u9762\u7ebf\u7a0b\u7ef4\u62a4\u7740\u81ea\u5df1\u7684\u5185\u5b58\u6c60\uff0c\u7528\u6237\u81ea\u5df1\u521b\u5efa\u7684\u6570\u636e\u7ebf\u7a0b\uff0c\u5219\u9700\u8981\u521b\u5efa\u8be5\u7ebf\u7a0b\u7684\u5185\u5b58\u6c60<\/p>\n<p><strong>39. \u4ec0\u4e48\u65f6\u5019\u9700\u8981\u5728\u7a0b\u5e8f\u4e2d\u521b\u5efa\u5185\u5b58\u6c60?<\/strong><\/p>\n<p>\u7b54\uff1a\u7528\u6237\u81ea\u5df1\u521b\u5efa\u7684\u6570\u636e\u7ebf\u7a0b\uff0c\u5219\u9700\u8981\u521b\u5efa\u8be5\u7ebf\u7a0b\u7684\u5185\u5b58\u6c60<\/p>\n<p><strong>40. 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numberWithInt:<\/p>\n<p>Foundation\u4e0b\u5927\u90e8\u5206\u7c7b\u5747\u6709\u7b80\u4fbf\u6784\u9020\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7b80\u4fbf\u6784\u9020\u65b9\u6cd5\uff0c\u83b7\u5f97\u7cfb\u7edf\u7ed9\u6211\u4eec\u521b\u5efa\u597d\u7684\u5bf9\u8c61\uff0c\u5e76\u4e14\u4e0d\u9700\u8981\u624b\u52a8\u91ca\u653e\u3002<\/p>\n<p><strong>42. 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UIView\u7684\u52a8\u753b\u6548\u679c\u6709\u90a3\u4e9b?<\/strong><\/p>\n<p>\u7b54\uff1a\u6709\u5f88\u591a\uff0c\u5982 UIViewAnimationOptionCurveEaseInOut UIViewAnimationOptionCurveEaseIn UIViewAnimationOptionCurveEaseOut UIViewAnimationOptionTransitionFlipFromLeft UIViewAnimationOptionTransitionFlipFromRight UIViewAnimationOptionTransitionCurlUpUIViewAnimationOptionTransitionCurlDown<\/p>\n<p><strong>44. \u5728iPhone\u5e94\u7528\u4e2d\u5982\u4f55\u4fdd\u5b58\u6570\u636e?<\/strong><\/p>\n<p>\u7b54\uff1a\u6709\u4ee5\u4e0b\u51e0\u79cd\u4fdd\u5b58\u673a\u5236\uff1a<\/p>\n<p>1).\u901a\u8fc7web\u670d\u52a1\uff0c\u4fdd\u5b58\u5728\u670d\u52a1\u5668\u4e0a<\/p>\n<p>2).\u901a\u8fc7NSCoder\u56fa\u5316\u673a\u5236\uff0c\u5c06\u5bf9\u8c61\u4fdd\u5b58\u5728\u6587\u4ef6\u4e2d<\/p>\n<p>3).\u901a\u8fc7SQlite\u6216CoreData\u4fdd\u5b58\u5728\u6587\u4ef6\u6570\u636e\u5e93\u4e2d<\/p>\n<p><strong>45. \u4ec0\u4e48\u662fcoredata?<\/strong><\/p>\n<p>\u7b54\uff1acoredata\u662f\u82f9\u679c\u63d0\u4f9b\u4e00\u5957\u6570\u636e\u4fdd\u5b58\u6846\u67b6\uff0c\u5176\u57fa\u4e8eSQlite<\/p>\n<p><strong>46. \u4ec0\u4e48\u662fNSManagedObject\u6a21\u578b?<\/strong><\/p>\n<p>\u7b54\uff1aNSManagedObject\u662fNSObject\u7684\u5b50\u7c7b \uff0c\u4e5f\u662fcoredata\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5b83\u662f\u4e00\u4e2a\u901a\u7528\u7684\u7c7b,\u5b9e\u73b0\u4e86core data \u6a21\u578b\u5c42\u6240\u9700\u7684\u57fa\u672c\u529f\u80fd\uff0c\u7528\u6237\u53ef\u901a\u8fc7\u5b50\u7c7b\u5316NSManagedObject\uff0c\u5efa\u7acb\u81ea\u5df1\u7684\u6570\u636e\u6a21\u578b\u3002<\/p>\n<p><strong>47. \u4ec0\u4e48\u662fNSManagedobjectContext?<\/strong><\/p>\n<p>\u7b54\uff1aNSManagedobjectContext\u5bf9\u8c61\u8d1f\u8d23\u5e94\u7528\u548c\u6570\u636e\u5e93\u4e4b\u95f4\u7684\u4ea4\u4e92\u3002<\/p>\n<p><strong>48. 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\u7684\u7406\u89e3?\u5e76\u5199\u51fa\u4e00\u4e2a\u4f7f\u7528Block\u6267\u884cUIVew\u52a8\u753b?<\/strong><\/p>\n<p>\u7b54\uff1aBlock\u662f\u53ef\u4ee5\u83b7\u53d6\u5176\u4ed6\u51fd\u6570\u5c40\u90e8\u53d8\u91cf\u7684\u533f\u540d\u51fd\u6570\uff0c\u5176\u4e0d\u4f46\u65b9\u4fbf\u5f00\u53d1\uff0c\u5e76\u4e14\u53ef\u4ee5\u5927\u5e45\u63d0\u9ad8\u5e94\u7528\u7684\u6267\u884c\u6548\u7387(\u591a\u6838\u5fc3CPU\u53ef\u76f4\u63a5\u5904\u7406Block\u6307\u4ee4)<\/p>\n<p>[UIView transitionWithView:self.view<\/p>\n<p>duration:0.2<\/p>\n<p>options:UIViewAnimationOptionTransitionFlipFromLeft<\/p>\n<p>animations:^{ [[blueViewController view] removeFromSuperview]; [[self view] insertSubview:yellowViewController.view atIndex:0]; }<\/p>\n<p>completion:NULL];<\/p>\n<p><strong>51. \u5199\u51fa\u4e0a\u9762\u4ee3\u7801\u7684Block\u7684\u5b9a\u4e49\u3002<\/strong><\/p>\n<p>\u7b54\uff1a<\/p>\n<p>typedef void(^animations) (void);<\/p>\n<p>typedef void(^completion) (BOOL finished);<\/p>\n<p><strong>52. 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NSURLConnection\u4e3b\u8981\u7528\u4e8e\u7f51\u7edc\u8bbf\u95ee\uff0c\u5176\u4e2d+ sendSynchronousRequest:returningResponse:error:\u662f\u540c\u6b65\u8bbf\u95ee\u6570\u636e\uff0c\u5373\u5f53\u524d\u7ebf\u7a0b\u4f1a\u963b\u585e\uff0c\u5e76\u7b49\u5f85request\u7684\u8fd4\u56de\u7684response\uff0c\u800c\u2013 initWithRequest:delegate:\u4f7f\u7528\u7684\u662f\u5f02\u6b65\u52a0\u8f7d\uff0c\u5f53\u5176\u5b8c\u6210\u7f51\u7edc\u8bbf\u95ee\u540e\uff0c\u4f1a\u901a\u8fc7delegate\u56de\u5230\u4e3b\u7ebf\u7a0b\uff0c\u5e76\u5176\u59d4\u6258\u7684\u5bf9\u8c61\u3002<\/p>\n<p><strong>55. \u591a\u7ebf\u7a0b\u662f\u4ec0\u4e48<\/strong><\/p>\n<p>\u7b54: 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iOS \u4e2d\u7684\u591a\u7ebf\u7a0b<\/strong><\/p>\n<p>\u7b54: iOS\u4e2d\u7684\u591a\u7ebf\u7a0b\uff0c\u662fCocoa\u6846\u67b6\u4e0b\u7684\u591a\u7ebf\u7a0b\uff0c\u901a\u8fc7Cocoa\u7684\u5c01\u88c5\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u66f4\u4e3a\u65b9\u4fbf\u7684\u4f7f\u7528\u7ebf\u7a0b\uff0c\u505a\u8fc7C++\u7684\u540c\u5b66\u53ef\u80fd\u4f1a\u5bf9\u7ebf\u7a0b\u6709\u66f4\u591a\u7684\u7406\u89e3\uff0c\u6bd4\u5982\u7ebf\u7a0b\u7684\u521b\u7acb\uff0c\u4fe1\u53f7\u91cf\u3001\u5171\u4eab\u53d8\u91cf\u6709\u8ba4\u8bc6\uff0cCocoa\u6846\u67b6\u4e0b\u4f1a\u65b9\u4fbf\u5f88\u591a\uff0c\u5b83\u5bf9\u7ebf\u7a0b\u505a\u4e86\u5c01\u88c5\uff0c\u6709\u4e9b\u5c01\u88c5\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u521b\u5efa\u7684\u5bf9\u8c61\uff0c\u672c\u8eab\u4fbf\u62e5\u6709\u7ebf\u7a0b\uff0c\u4e5f\u5c31\u662f\u7ebf\u7a0b\u7684\u5bf9\u8c61\u5316\u62bd\u8c61\uff0c\u4ece\u800c\u51cf\u5c11\u6211\u4eec\u7684\u5de5\u7a0b\uff0c\u63d0\u4f9b\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u3002<\/p>\n<p>GCD\u662f(Grand Central Dispatch)\u7684\u7f29\u5199 \uff0c\u4ece\u7cfb\u7edf\u7ea7\u522b\u63d0\u4f9b\u7684\u4e00\u4e2a\u6613\u7528\u5730\u591a\u7ebf\u7a0b\u7c7b\u5e93\uff0c\u5177\u6709\u8fd0\u884c\u65f6\u7684\u7279\u70b9\uff0c\u80fd\u5145\u5206\u5229\u7528\u591a\u6838\u5fc3\u786c\u4ef6\u3002GCD\u7684API\u63a5\u53e3\u4e3aC\u8bed\u8a00\u7684\u51fd\u6570\uff0c\u51fd\u6570\u53c2\u6570\u4e2d\u591a\u6570\u6709Block\uff0c\u5173\u4e8eBlock\u7684\u4f7f\u7528\u53c2\u770b\u8fd9\u91cc\uff0c\u4e3a\u6211\u4eec\u63d0\u4f9b\u5f3a\u5927\u7684\u201c\u63a5\u53e3\u201d\uff0c\u5bf9\u4e8eGCD\u7684\u4f7f\u7528\u53c2\u89c1\u672c\u6587<\/p>\n<p>NSOperation\u4e0eQueue<\/p>\n<p>NSOperation\u662f\u4e00\u4e2a\u62bd\u8c61\u7c7b\uff0c\u5b83\u5c01\u88c5\u4e86\u7ebf\u7a0b\u7684\u7ec6\u8282\u5b9e\u73b0\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b50\u7c7b\u5316\u8be5\u5bf9\u8c61\uff0c\u52a0\u4e0aNSQueue\u6765\u540c\u9762\u5411\u5bf9\u8c61\u7684\u601d\u7ef4\uff0c\u7ba1\u7406\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u3002\u5177\u4f53\u53ef\u53c2\u770b\u8fd9\u91cc\uff1a\u4e00\u4e2a\u57fa\u4e8eNSOperation\u7684\u591a\u7ebf\u7a0b\u7f51\u7edc\u8bbf\u95ee\u7684\u9879\u76ee\u3002<\/p>\n<p>NSThread<\/p>\n<p>NSThread\u662f\u4e00\u4e2a\u63a7\u5236\u7ebf\u7a0b\u6267\u884c\u7684\u5bf9\u8c61\uff0c\u5b83\u4e0d\u5982NSOperation\u62bd\u8c61\uff0c\u901a\u8fc7\u5b83\u6211\u4eec\u53ef\u4ee5\u65b9\u4fbf\u7684\u5f97\u5230\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5e76\u63a7\u5236\u5b83\u3002\u4f46NSThread\u7684\u7ebf\u7a0b\u4e4b\u95f4\u7684\u5e76\u53d1\u63a7\u5236\uff0c\u662f\u9700\u8981\u6211\u4eec\u81ea\u5df1\u6765\u63a7\u5236\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7NSCondition\u5b9e\u73b0\u3002<\/p>\n<p>\u53c2\u770b iOS\u591a\u7ebf\u7a0b\u7f16\u7a0b\u4e4bNSThread\u7684\u4f7f\u7528<\/p>\n<p>\u5176\u4ed6\u591a\u7ebf\u7a0b<\/p>\n<p>\u5728Cocoa\u7684\u6846\u67b6\u4e0b\uff0c\u901a\u77e5\u3001Timer\u548c\u5f02\u6b65\u51fd\u6570\u7b49\u90fd\u6709\u4f7f\u7528\u591a\u7ebf\u7a0b\uff0c(\u5f85\u8865\u5145).<\/p>\n<p><strong>57. \u5728\u9879\u76ee\u4ec0\u4e48\u65f6\u5019\u9009\u62e9\u4f7f\u7528GCD\uff0c\u4ec0\u4e48\u65f6\u5019\u9009\u62e9NSOperation?<\/strong><\/p>\n<p>\u7b54: \u9879\u76ee\u4e2d\u4f7f\u7528NSOperation\u7684\u4f18\u70b9\u662fNSOperation\u662f\u5bf9\u7ebf\u7a0b\u7684\u9ad8\u5ea6\u62bd\u8c61\uff0c\u5728\u9879\u76ee\u4e2d\u4f7f\u7528\u5b83\uff0c\u4f1a\u4f7f\u9879\u76ee\u7684\u7a0b\u5e8f\u7ed3\u6784\u66f4\u597d\uff0c\u5b50\u7c7b\u5316NSOperation\u7684\u8bbe\u8ba1\u601d\u8def\uff0c\u662f\u5177\u6709\u9762\u5411\u5bf9\u8c61\u7684\u4f18\u70b9(\u590d\u7528\u3001\u5c01\u88c5)\uff0c\u4f7f\u5f97\u5b9e\u73b0\u662f\u591a\u7ebf\u7a0b\u652f\u6301\uff0c\u800c\u63a5\u53e3\u7b80\u5355\uff0c\u5efa\u8bae\u5728\u590d\u6742\u9879\u76ee\u4e2d\u4f7f\u7528\u3002<\/p>\n<p>\u9879\u76ee\u4e2d\u4f7f\u7528GCD\u7684\u4f18\u70b9\u662fGCD\u672c\u8eab\u975e\u5e38\u7b80\u5355\u3001\u6613\u7528\uff0c\u5bf9\u4e8e\u4e0d\u590d\u6742\u7684\u591a\u7ebf\u7a0b\u64cd\u4f5c\uff0c\u4f1a\u8282\u7701\u4ee3\u7801\u91cf\uff0c\u800cBlock\u53c2\u6570\u7684\u4f7f\u7528\uff0c\u4f1a\u662f\u4ee3\u7801\u66f4\u4e3a\u6613\u8bfb\uff0c\u5efa\u8bae\u5728\u7b80\u5355\u9879\u76ee\u4e2d\u4f7f\u7528\u3002<\/p>\n<p><strong>58. \u4ec0\u4e48\u662fblock<\/strong><\/p>\n<p>\u7b54: \u5bf9\u4e8e\u95ed\u5305(block),\u6709\u5f88\u591a\u5b9a\u4e49\uff0c\u5176\u4e2d\u95ed\u5305\u5c31\u662f\u80fd\u591f\u8bfb\u53d6\u5176\u5b83\u51fd\u6570\u5185\u90e8\u53d8\u91cf\u7684\u51fd\u6570\uff0c\u8fd9\u4e2a\u5b9a\u4e49\u5373\u63a5\u8fd1\u672c\u8d28\u53c8\u8f83\u597d\u7406\u89e3\u3002\u5bf9\u4e8e\u521a\u63a5\u89e6Block\u7684\u540c\u5b66\uff0c\u4f1a\u89c9\u5f97\u6709\u4e9b\u7ed5\uff0c\u56e0\u4e3a\u6211\u4eec\u4e60\u60ef\u5199\u8fd9\u6837\u7684\u7a0b\u5e8fmain(){ funA();} funA(){funB();} funB(){\u2026..}; \u5c31\u662f\u51fd\u6570main\u8c03\u7528\u51fd\u6570A\uff0c\u51fd\u6570A\u8c03\u7528\u51fd\u6570B\u2026 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block \u5b9e\u73b0\u539f\u7406<\/strong><\/p>\n<p>\u7b54: Objective-C\u662f\u5bf9C\u8bed\u8a00\u7684\u6269\u5c55\uff0cblock\u7684\u5b9e\u73b0\u662f\u57fa\u4e8e\u6307\u9488\u548c\u51fd\u6570\u6307\u9488\u3002<\/p>\n<p>\u4ece\u8ba1\u7b97\u8bed\u8a00\u7684\u53d1\u5c55\uff0c\u6700\u65e9\u7684goto\uff0c\u9ad8\u7ea7\u8bed\u8a00\u7684\u6307\u9488\uff0c\u5230\u9762\u5411\u5bf9\u8c61\u8bed\u8a00\u7684block\uff0c\u4ece\u673a\u5668\u7684\u601d\u7ef4\uff0c\u4e00\u6b65\u6b65\u63a5\u8fd1\u4eba\u7684\u601d\u7ef4\uff0c\u4ee5\u65b9\u4fbf\u5f00\u53d1\u4eba\u5458\u66f4\u4e3a\u9ad8\u6548\u3001\u76f4\u63a5\u7684\u63cf\u8ff0\u51fa\u73b0\u5b9e\u7684\u903b\u8f91(\u9700\u6c42)\u3002<\/p>\n<p>\u4f7f\u7528\u5b9e\u4f8b<\/p>\n<p>cocoaTouch\u6846\u67b6\u4e0b\u52a8\u753b\u6548\u679c\u7684Block\u7684\u8c03\u7528<\/p>\n<p>\u4f7f\u7528typed\u58f0\u660eblock<\/p>\n<p>typedef void(^didFinishBlock) (NSObject *ob);<\/p>\n<p>\u8fd9\u5c31\u58f0\u660e\u4e86\u4e00\u4e2adidFinishBlock\u7c7b\u578b\u7684block\uff0c<\/p>\n<p>\u7136\u540e\u4fbf\u53ef\u7528<\/p>\n<p>@property (nonatomic,copy) didFinishBlock finishBlock;<\/p>\n<p>\u58f0\u660e\u4e00\u4e2ablokc\u5bf9\u8c61\uff0c\u6ce8\u610f\u5bf9\u8c61\u5c5e\u6027\u8bbe\u7f6e\u4e3acopy\uff0c\u63a5\u5230block \u53c2\u6570\u65f6\uff0c\u4fbf\u4f1a\u81ea\u52a8\u590d\u5236\u4e00\u4efd\u3002<\/p>\n<p>__block\u662f\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b\uff0c<\/p>\n<p>\u4f7f\u7528\u8be5\u5173\u952e\u5b57\u58f0\u660e\u7684\u5c40\u90e8\u53d8\u91cf\uff0c\u53ef\u4ee5\u88abblock\u6240\u6539\u53d8\uff0c\u5e76\u4e14\u5176\u5728\u539f\u51fd\u6570\u4e2d\u7684\u503c\u4f1a\u88ab\u6539\u53d8\u3002<\/p>\n<p><strong>60.\u5173\u4e8eblock<\/strong><\/p>\n<p>\u7b54: \u9762\u8bd5\u65f6\uff0c\u9762\u8bd5\u5b98\u4f1a\u5148\u95ee\u4e00\u4e9b\uff0c\u662f\u5426\u4e86\u89e3block\uff0c\u662f\u5426\u4f7f\u7528\u8fc7block\uff0c\u8fd9\u4e9b\u95ee\u9898\u76f8\u5f53\u4e8e\u5f00\u573a\u767d\uff0c\u5f80\u5f80\u662f\u4e0b\u9762\u4e00\u7cfb\u5217\u95ee\u9898\u7684\u5f00\u59cb\uff0c\u6240\u4ee5\u4e00\u5b9a\u8981\u5982\u5b9e\u6839\u636e\u81ea\u5df1\u7684\u60c5\u51b5\u56de\u7b54\u3002<\/p>\n<p>1). 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finishBlock\u5bf9\u8c61<\/p>\n<p>dispatch_async(dispatch_get_main_queue(),^(void){finishBlock();});<\/p>\n","raw":"","protected":false},"excerpt":{"rendered":"<p>\u4e4b\u524d\u770b\u4e86\u5f88\u591a\u9762\u8bd5\u9898\uff0c\u611f\u89c9\u8981\u4e0d\u662f\u4e0d\u591f\u5c31\u662f\u8fc7\u4e8e\u5197\u4f59\uff0c\u4e8e\u662f\u6211\u5c06\u7f51\u4e0a\u7684\u4e00\u4e9b\u9762\u8bd5\u9898\u8fdb\u884c\u4e86\u5220\u51cf\u548c\u91cd\u6392\uff0c\u73b0\u5728\u5206\u4eab\u7ed9\u5927\u5bb6\u3002\uff08\u9898\u76ee\u6765\u6e90\u4e8e\u7f51\u7edc\uff0c\u4fb5\u5220\uff09<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[90],"class_list":["post-386","post","type-post","status-publish","format-standard","hentry","category-the-development-of-communication-technology","tag-ios"],"post_thumbnail_image":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","content_first_image":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","post_medium_image_300":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","post_thumbnail_image_624":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","post_frist_image":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","post_medium_image":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","post_large_image":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","post_full_image":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","post_all_images":[{"imagesurl":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2016\/04\/0d4e4a4cf7001058ca1a642b33f8cd98.jpg","id":"image0"}],"videoAdId":"","listAd":"0","listAdId":"","listAdEvery":5,"total_comments":0,"category_name":"\u5f00\u53d1\u6280\u672f\u4ea4\u6d41","post_date":"2016-04-28","like_count":"0","praiseWord":"\u9f13\u52b1","copyright_state":"","excitationAd":"0","rewardedVideoAdId":"","detailAdId":"","detailAd":"0","enterpriseMinapp":"0","audios":[],"postImageUrl":"http:\/\/images.jiandaima.com\/blog\/wp-content\/uploads\/2020\/02\/img_5e44112722964.png","avatarurls":[],"related_posts":[],"pageviews":499,"next_post_id":388,"next_post_title":"\u8d85\u5168\uff01iOS 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