{"id":175,"date":"2020-12-07T00:05:09","date_gmt":"2020-12-06T16:05:09","guid":{"rendered":"https:\/\/www.blinkedu.cn\/?p=175"},"modified":"2020-12-08T22:58:42","modified_gmt":"2020-12-08T14:58:42","slug":"unity%e4%b8%adgetcomponent%e7%9a%84%e4%b8%89%e7%a7%8d%e6%96%b9%e5%bc%8f%e6%95%88%e7%8e%87%e6%af%94%e8%be%83","status":"publish","type":"post","link":"https:\/\/www.blinkedu.cn\/index.php\/2020\/12\/07\/unity%e4%b8%adgetcomponent%e7%9a%84%e4%b8%89%e7%a7%8d%e6%96%b9%e5%bc%8f%e6%95%88%e7%8e%87%e6%af%94%e8%be%83\/","title":{"rendered":"Unity\u4e2dGetComponent\u7684\u4e09\u79cd\u65b9\u5f0f\u6548\u7387\u6bd4\u8f83"},"content":{"rendered":"<h2>\u83b7\u53d6\u7ec4\u4ef6\u7684\u4e09\u79cd\u65b9\u5f0f<\/h2>\n<p>\u5728Unity\u4e2d\u83b7\u53d6\u7269\u4f53\u4e0a\u7684\u7ec4\u4ef6\u6709\u4e09\u79cd\u65b9\u5f0f<\/p>\n<ul>\n<li>public Component GetComponent (string type);<\/li>\n<li>public Component GetComponent (Type type);<\/li>\n<li>public T GetComponent ();<\/li>\n<\/ul>\n<p>\u76ee\u524d\u6211\u4eec\u7528\u7684\u6700\u591a\u7684\u662f\u7b2c\u4e09\u79cd\uff0c\u901a\u8fc7\u6cdb\u578b\u83b7\u53d6\u7ec4\u4ef6\u3002\u65e2\u7136\u6709\u4e09\u79cd\u65b9\u5f0f\u53ef\u4ee5\u83b7\u53d6\u7ec4\u4ef6\uff0c\u90a3\u4e48\u5728\u6b63\u5e38\u7684\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u5e94\u8be5\u4f7f\u7528\u54ea\u79cd\u65b9\u5f0f\u83b7\u53d6\u7ec4\u4ef6\u6548\u7387\u6700\u9ad8\uff0c\u63a5\u4e0b\u6765\u5c31\u6d4b\u8bd5\u4e00\u4e0b\u4e09\u79cd\u65b9\u5f0f\u5206\u522b\u6267\u884c\u4e00\u767e\u4e07\u6b21\uff0c\u6bd4\u8f83\u4e00\u4e0b\u4ed6\u4eec\u7684\u6548\u7387\u5dee\u522b\u3002\u4e3a\u4e86\u4f7f\u7ed3\u679c\u76f8\u5bf9\u5ba2\u89c2\u548c\u51c6\u786e\uff0c\u6211\u4eec\u5206\u522b\u83b7\u53d6Unity\u4e2d\u81ea\u5e26\u7684\u7ec4\u4ef6\u548c\u6211\u4eec\u81ea\u5df1\u5199\u7684\u7ec4\u4ef6\uff0c\u5206\u522b\u5bf9\u6bd4\u5176\u6548\u7387<\/p>\n<h2>\u51c6\u5907\u5de5\u4f5c<\/h2>\n<p>\u4e3a\u4e86\u65b9\u4fbf\u6d4b\u8bd5\uff0c\u4e0b\u9762\u8d34\u4e00\u4e2a\u8fdb\u884c\u4e86\u7b80\u5355\u5c01\u88c5\u7684\u83b7\u53d6\u6267\u884c\u65f6\u95f4\u7684\u7c7b\u4ee3\u7801<\/p>\n<pre><code class=\"language-csharp line-numbers\">using System;\nusing System.Diagnostics;\n\npublic class CustomTimer : IDisposable\n{\n    private Stopwatch watch = null;\n    private string label = null;\n\n    public CustomTimer(string label)\n    {\n        this.label = label;\n        watch = Stopwatch.StartNew();\n    }\n\n    public void Dispose()\n    {\n        long time = watch.ElapsedMilliseconds;\n        watch.Stop();\n        watch = null;\n        UnityEngine.Debug.LogFormat(&quot;{0}\u6d4b\u8bd5\u8017\u65f6&lt;color=#ff0000&gt;{1}&lt;\/color&gt;ms&quot;, label, time);\n    }\n}\n\n<\/code><\/pre>\n<h2>\u6d4b\u8bd5Unity\u81ea\u5e26\u7ec4\u4ef6\u83b7\u53d6<\/h2>\n<p>\u8fd9\u91cc\u6211\u4eec\u76f4\u63a5\u5c06\u811a\u672c\u6302\u5728\u6444\u50cf\u673a\u4e0a\uff0c\u83b7\u53d6\u6444\u50cf\u673a\u4e0a\u7684AudioListener\u7ec4\u4ef6<\/p>\n<pre><code class=\"language-csharp line-numbers\">using System.Collections;\nusing System.Collections.Generic;\nusing UnityEngine;\n\npublic class NewBehaviourScript1 : MonoBehaviour\n{\n    private const int COUNT = 1000000;  \/\/ \u6267\u884c\u6b21\u6570\n    private AudioListener component;    \/\/ \u5b58\u50a8\u83b7\u53d6\u7684\u7ec4\u4ef6\n\n    private void Start()\n    {\n        Test1();\n        Test2();\n        Test3();\n    }\n\n    \/\/\/ &lt;summary&gt;\n    \/\/\/ String\u65b9\u5f0f\n    \/\/\/ &lt;\/summary&gt;\n    private void Test1()\n    {\n        using (new CustomTimer(&quot;string\u65b9\u5f0f&quot;))\n        {\n            for (int i = 0; i &lt; COUNT; i++)\n            {\n                component = GetComponent(&quot;AudioListener&quot;) as AudioListener;\n            }\n        }\n    }\n\n    \/\/\/ &lt;summary&gt;\n    \/\/\/ typeof\u65b9\u5f0f\n    \/\/\/ &lt;\/summary&gt;\n    private void Test2()\n    {\n        using (new CustomTimer(&quot;typeof\u65b9\u5f0f&quot;))\n        {\n            for (int i = 0; i &lt; COUNT; i++)\n            {\n                component = GetComponent(typeof(AudioListener)) as AudioListener;\n            }\n        }\n    }\n\n    \/\/\/ &lt;summary&gt;\n    \/\/\/ \u6cdb\u578b\u65b9\u5f0f\n    \/\/\/ &lt;\/summary&gt;\n    private void Test3()\n    {\n        using (new CustomTimer(&quot;generics\u65b9\u5f0f&quot;))\n        {\n            for (int i = 0; i &lt; COUNT; i++)\n            {\n                component = GetComponent&lt;AudioListener&gt;();\n            }\n        }\n    }\n}\n\n<\/code><\/pre>\n<p><a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_747da29d8eb7aee9d9622ec5b56b5c8a.jpg\"><img decoding=\"async\" layer-src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_747da29d8eb7aee9d9622ec5b56b5c8a.jpg\" src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_747da29d8eb7aee9d9622ec5b56b5c8a.jpg\" alt=\"\u300aUnity\u4e2dGetComponent\u7684\u4e09\u79cd\u65b9\u5f0f\u6548\u7387\u6bd4\u8f83\u300b\" \/><\/a><br \/>\n\u70b9\u51fb\u8fd0\u884c\uff0c\u8f93\u51fa\u7684\u5982\u4e0b\u7ed3\u679c<br \/>\n<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_1e1ad5e91c8dba639d4fd5d8b56b61a6.jpg\"><img decoding=\"async\" layer-src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_1e1ad5e91c8dba639d4fd5d8b56b61a6.jpg\" src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_1e1ad5e91c8dba639d4fd5d8b56b61a6.jpg\" alt=\"\u300aUnity\u4e2dGetComponent\u7684\u4e09\u79cd\u65b9\u5f0f\u6548\u7387\u6bd4\u8f83\u300b\" \/><\/a><br \/>\n\u5bf9\u6bd4\u7ed3\u679c\uff0c\u53d1\u73b0\u4f7f\u7528\u6cdb\u578b\u7684\u65b9\u5f0f\u8017\u65f6\u6700\u5c11\uff0c\u4e00\u767e\u4e07\u6b21\u8017\u65f658\u6beb\u79d2\uff0cstring\u65b9\u5f0f\u548ctypeof\u65b9\u5f0f\u76f8\u5dee\u4e0d\u5927\uff0c\u90fd\u5728120\u6beb\u79d2\u5de6\u53f3\u3002\u7531\u6b64\u5f97\u51fa\u83b7\u53d6\u81ea\u5e26\u7ec4\u4ef6\u4f7f\u7528\u6cdb\u578b\u7684\u65b9\u5f0f\u662f\u6548\u7387\u662f\u6700\u9ad8\u7684\uff0c\u5b57\u7b26\u4e32\u6b21\u4e4b\uff0ctypeof\u7684\u65b9\u5f0f\u6548\u7387\u6700\u5dee\u3002<br \/>\n\u90a3\u4e48\u7ed3\u679c\u771f\u7684\u5982\u6b64\u5417\uff1f\u5982\u679c\u662f\u6211\u4eec\u81ea\u5df1\u5199\u7684\u7ec4\u4ef6\uff0c\u5f97\u51fa\u7684\u7ed3\u679c\u662f\u5426\u4e5f\u548c\u4e0a\u9762\u7684\u4e00\u6837\u5462\uff1f\u63a5\u4e0b\u6765\u9a8c\u8bc1\u4e00\u4e0b\u83b7\u53d6\u81ea\u5b9a\u4e49\u7ec4\u4ef6<\/p>\n<h2>\u6d4b\u8bd5\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u83b7\u53d6<\/h2>\n<p>\u6d4b\u8bd5\u603b\u4f53\u8fc7\u7a0b\u8fd8\u662f\u548c\u4e0a\u9762\u7684\u4e00\u6837\uff0c\u4e0d\u540c\u7684\u662f\u8fd9\u6b21\u6211\u4eec\u9700\u8981\u5728\u6444\u50cf\u673a\u4e0a\u6302\u5728\u4e00\u4e2a\u6211\u4eec\u81ea\u5df1\u5199\u7684\u7ec4\u4ef6\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u81ea\u5df1\u5efa\u4e00\u4e2aTestComponent\u7684\u7ec4\u4ef6\uff08\u5c31\u662f\u521b\u5efa\u4e00\u4e2aTestComponent\u811a\u672c\uff0c\u4fdd\u5b58\u9ed8\u8ba4\u5373\u53ef\uff09\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-csharp line-numbers\">using System.Collections;\nusing System.Collections.Generic;\nusing UnityEngine;\n\npublic class TestComponent : MonoBehaviour\n{\n    \/\/ Start is called before the first frame update\n    void Start()\n    {\n\n    }\n\n    \/\/ Update is called once per frame\n    void Update()\n    {\n\n    }\n}\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\u5c06\u4e0a\u9762\u7684\u6d4b\u8bd5\u811a\u672c\u83b7\u53d6\u7684AudioListener\u7ec4\u4ef6\u90fd\u6539\u4e3aTestComponent<\/p>\n<pre><code class=\"language-csharp line-numbers\">using System.Collections;\nusing System.Collections.Generic;\nusing UnityEngine;\n\npublic class NewBehaviourScript1 : MonoBehaviour\n{\n    private const int COUNT = 1000000;  \/\/ \u6267\u884c\u6b21\u6570\n    private TestComponent component;    \/\/ \u5b58\u50a8\u83b7\u53d6\u7684\u7ec4\u4ef6\n\n    private void Start()\n    {\n        Test1();\n        Test2();\n        Test3();\n    }\n\n    \/\/\/ &lt;summary&gt;\n    \/\/\/ String\u65b9\u5f0f\n    \/\/\/ &lt;\/summary&gt;\n    private void Test1()\n    {\n        using (new CustomTimer(&quot;string\u65b9\u5f0f&quot;))\n        {\n            for (int i = 0; i &lt; COUNT; i++)\n            {\n                component = GetComponent(&quot;TestComponent&quot;) as TestComponent;\n            }\n        }\n    }\n\n    \/\/\/ &lt;summary&gt;\n    \/\/\/ typeof\u65b9\u5f0f\n    \/\/\/ &lt;\/summary&gt;\n    private void Test2()\n    {\n        using (new CustomTimer(&quot;typeof\u65b9\u5f0f&quot;))\n        {\n            for (int i = 0; i &lt; COUNT; i++)\n            {\n                component = GetComponent(typeof(TestComponent)) as TestComponent;\n            }\n        }\n    }\n\n    \/\/\/ &lt;summary&gt;\n    \/\/\/ \u6cdb\u578b\u65b9\u5f0f\n    \/\/\/ &lt;\/summary&gt;\n    private void Test3()\n    {\n        using (new CustomTimer(&quot;generics\u65b9\u5f0f&quot;))\n        {\n            for (int i = 0; i &lt; COUNT; i++)\n            {\n                component = GetComponent&lt;TestComponent&gt;();\n            }\n        }\n    }\n}\n\n<\/code><\/pre>\n<p>\u8fd0\u884c\uff0c\u8f93\u5165\u7ed3\u679c\u5982\u4e0b\uff1a<br \/>\n<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_ce410ba7322c068670fcde2e8bfa5e6b.jpg\"><img decoding=\"async\" layer-src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_ce410ba7322c068670fcde2e8bfa5e6b.jpg\" src=\"https:\/\/www.blinkedu.cn\/wp-content\/uploads\/2020\/12\/wp_editor_md_ce410ba7322c068670fcde2e8bfa5e6b.jpg\" alt=\"\u300aUnity\u4e2dGetComponent\u7684\u4e09\u79cd\u65b9\u5f0f\u6548\u7387\u6bd4\u8f83\u300b\" \/><\/a><br \/>\n\u8fd9\u6b21\u53d1\u73b0\uff0c\u5b57\u7b26\u4e32\u65b9\u5f0f\u7684\u8017\u65f6\u60ca\u4eba\uff0c\u548c\u53e6\u5916\u4e24\u4e2a\u4e0d\u5728\u4e00\u4e2a\u6570\u91cf\u7ea7\u4e0a\uff0c\u6cdb\u578b\u7684\u65b9\u5f0f\u4f9d\u65e7\u662f\u8017\u65f6\u6700\u77ed\u7684<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<ol>\n<li>\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u63a8\u8350\u4f7f\u7528\u6cdb\u578b\u65b9\u5f0f\u83b7\u53d6\u7ec4\u4ef6<\/li>\n<li>\u83b7\u53d6\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u6548\u7387\u6bd4\u83b7\u53d6\u81ea\u5e26\u7ec4\u4ef6\u6548\u7387\u4f4e<\/li>\n<li>\u5e94\u5f53\u907f\u514d\u5728\u5de5\u7a0b\u4e2d\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u5f0f\u83b7\u53d6\u7ec4\u4ef6\uff0c\u9664\u975e\u4e0d\u7528\u8003\u8651\u6548\u7387\u95ee\u9898\uff08\u4f8b\u5982\u7f16\u8f91\u5668\u529f\u80fd\u5f00\u53d1\uff09<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u83b7\u53d6\u7ec4\u4ef6\u7684\u4e09\u79cd\u65b9\u5f0f \u5728Unity\u4e2d\u83b7\u53d6\u7269\u4f53\u4e0a\u7684\u7ec4\u4ef6\u6709\u4e09\u79cd\u65b9\u5f0f public Component GetComponent (string type); public Component GetComponent (Type type); public T GetComponent (); \u76ee\u524d\u6211\u4eec\u7528\u7684\u6700\u591a\u7684\u662f\u7b2c\u4e09\u79cd\uff0c\u901a\u8fc7\u6cdb\u578b\u83b7\u53d6\u7ec4\u4ef6\u3002\u65e2\u7136\u2026\u2026<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,1],"tags":[],"class_list":["post-175","post","type-post","status-publish","format-standard","hentry","category-unity","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/posts\/175"}],"collection":[{"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/comments?post=175"}],"version-history":[{"count":0,"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/posts\/175\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/media?parent=175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/categories?post=175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.blinkedu.cn\/index.php\/wp-json\/wp\/v2\/tags?post=175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}