{"id":1148,"date":"2021-06-09T20:29:00","date_gmt":"2021-06-09T12:29:00","guid":{"rendered":"https:\/\/www.ray650128.com\/wordpress\/?p=1148"},"modified":"2022-03-01T13:42:48","modified_gmt":"2022-03-01T05:42:48","slug":"androidviewbinding%e5%88%9d%e9%ab%94%e9%a9%97","status":"publish","type":"post","link":"https:\/\/blog.ray650128.com\/?p=1148","title":{"rendered":"[Android]ViewBinding\u521d\u9ad4\u9a57"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u539f\u7531<\/h2>\n\n\n\n<p>ViewBinding\u662fGoogle\u767c\u4f48\u7684\u4e00\u500bView\u7d81\u5b9a\u6846\u67b6\uff0c\u76ee\u7684\u662f\u70ba\u4e86\u8981\u8b93\u958b\u767c\u8005\u7528\u66f4\u7c21\u55ae\u7684\u65b9\u5f0f\u53d6\u4ee3findViewById\u3002<\/p>\n\n\n\n<p>\u7531\u65bc\u6211\u73fe\u5728\u5df2\u7d93\u5b8c\u5168\u63a1\u7528Kotlin\u4f86\u958b\u767cAndroid APP\u4e86\uff0c\u52a0\u4e0aKotlin\u6709\u63d0\u4f9bKotlin Android Extensions\u7684gradle\u5916\u639b\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\u6211\u4e5f\u5169\u4e09\u5e74\u6c92\u7528findViewById\u4e86\u3002<\/p>\n\n\n\n<p>\u90a3\u70ba\u4ec0\u9ebc\u6211\u6703\u958b\u59cb\u4f7f\u7528ViewBinding\uff1f<\/p>\n\n\n\n<p>\u4e3b\u8981\u662f\u56e0\u70ba\u524d\u9663\u5b50\u5728build\u7a0b\u5f0f\u78bc\u7684\u6642\u5019\uff0c\u767c\u73feconsole\u8996\u7a97\u6709\u4e00\u884c\u63d0\u793a\u8a0a\u606f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">The 'kotlin-android-extensions' Gradle plugin is deprecated. Please use this migration guide (https:\/\/goo.gle\/kotlin-android-extensions-deprecation) to start working with View Binding (https:\/\/developer.android.com\/topic\/libraries\/view-binding) and the 'kotlin-parcelize' plugin.<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>\u96d6\u7136\u4e0d\u77e5\u9053\u4f55\u5e74\u4f55\u6708\u624d\u6703\u6b63\u5f0f\u68c4\u7528\uff0c\u52a0\u4e0a\u505a\u7684\u6848\u5b50\u8d8a\u4f86\u8d8a\u591a\u3002\u5982\u679c\u7a81\u7136\u5ba3\u5e03\u6b63\u5f0f\u68c4\u7528\uff0c\u4f30\u8a08\u6211\u6703\u6539\u5230\u6c92\u65e5\u6c92\u591c\u5427\u22ef\u22ef<\/p>\n\n\n\n<p>\u65bc\u662f\u8d81\u9084\u6c92\u68c4\u7528\u524d\uff0c\u8d95\u7dca\u5c07\u7a0b\u5f0f\u78bc\u8f49\u79fb\u5230ViewBinding\u6846\u67b6\u4e0a\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5c0e\u5165ViewBinding<\/h2>\n\n\n\n<p>\u7531\u65bcViewBinding\u5fc5\u9808\u8981\u5728Android Studio 3.6\u6216\u8005\u66f4\u9ad8\u7684\u7248\u672c\u624d\u80fd\u57f7\u884c\uff0c\u56e0\u6b64\u5fc5\u9808\u5c07Android Studio\u66f4\u65b0\u52303.6\u6216\u662f\u66f4\u65b0\u7684\u7248\u672c\u3002<\/p>\n\n\n\n<p>1.\u6253\u958bAndroid Studio\u5c08\u6848\uff0c\u5728app\u5c64\u7d1a\u7684build.gradle\u4e2d\u958b\u555fviewBinding\u529f\u80fd\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"kotlin\" class=\"language-kotlin line-numbers\">android {\n    ...\u4ee5\u4e0b\u7701\u7565\n\n    viewBinding.enabled = true\n}<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>2.\u63a5\u8457\u6539\u5bebActivity\u4e2d\u7684setContentView()\u7a0b\u5f0f\u78bc\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"kotlin\" class=\"language-kotlin line-numbers\">class MainActivity : AppCompatActivity() {\n\n    private lateinit var binding: ActivityMainBinding\n\n    override fun onCreate(savedInstanceState: Bundle?) {\n        super.onCreate(savedInstanceState)\n        binding = ActivityMainBinding.inflate(layoutInflater)\n        setContentView(binding.root)\n\n\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u7b2c3\u884c\u7684ActivityMainBinding\u985e\u5225\u662fIDE\u81ea\u52d5\u5e6b\u4f60\u751f\u6210\u7684\uff0c\u5c0d\u61c9\u7684\u662factivity_main.xml\u9019\u500blayout\u6587\u4ef6\u3002<\/p>\n\n\n\n<p>\u7b2c6~7\u884c\u7684\u4f5c\u7528\u662f\u5728onCreate()\u6642\uff0c\u5c07\u756b\u9762\u65b0\u589e\u5230Activity\u4e2d\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>3.\u8981\u4f7f\u7528UI\u5143\u4ef6\u6642\uff0c\u76f4\u63a5\u900f\u904ebinding.&lt;UI\u5143\u4ef6\u540d\u7a31&gt;\u5373\u53ef\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"kotlin\" class=\"language-kotlin line-numbers\">binding.button.setOnClickListener {\n    binding.textView.text = \"You press a button\"\n}<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9032\u968e\u7528\u6cd5<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">BaseActivity<\/h2>\n\n\n\n<p>\u5728\u958b\u767cAPP\u6642\uff0c\u70ba\u4e86\u6e1b\u5c11\u8a31\u591a\u91cd\u8907\u6027\u7684\u7a0b\u5f0f\u78bc\uff08\u8df3\u51faAlertDialog\u3001\u986f\u793a\/\u96b1\u85cf\u865b\u64ec\u9375\u76e4\u7b49\uff09\u3002<\/p>\n\n\n\n<p>\u5c07\u91cd\u8907\u7684\u7a0b\u5f0f\u78bc\u5c01\u88dd\u6210\u4e00\u500bBaseActivity\u662f\u518d\u6b63\u5e38\u4e0d\u904e\u7684\u4e8b\u60c5\u4e86\uff0c\u90a3\u9ebc\u57fa\u65bcViewBinding\u7684BaseActivity\u8981\u600e\u9ebc\u5beb\u5462\uff1f<\/p>\n\n\n\n<p>\u6211\u5011\u53ef\u4ee5\u5c07ViewBinding\u985e\u5225\u7684\u7528\u6cdb\u578b\u50b3\u5165\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"kotlin\" class=\"language-kotlin line-numbers\">abstract class BaseActivity&lt;T : ViewBinding&gt;: AppCompatActivity(){\n\n    private lateinit var _binding: T\n    protected val binding get() = _binding\n\n    override fun onCreate(savedInstanceState: Bundle?) {\n        super.onCreate(savedInstanceState)\n        _binding = getViewBinding()\n        setContentView(_binding.root)\n    }\n \n    protected abstract fun getViewBinding(): T\n}\n<\/code><\/pre>\n\n\n\n<p>\u4e4b\u5f8c\u5728Activity\u4e2d\u7e7c\u627fBaseActivity\uff0c\u4e26\u5c07layout\u6587\u4ef6\u7684Binding\u985e\u5225\u50b3\u5165\u5373\u53ef\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"kotlin\" class=\"language-kotlin line-numbers\">class MainActivity : BaseActivity&lt;ActivityMainBinding&gt;() {\n\n    override fun getViewBinding() = ActivityMainBinding.inflate(layoutInflater)\n\n    override fun onCreate(savedInstanceState: Bundle?) {\n        super.onCreate(savedInstanceState)\n\n        \n    }\n}<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u539f\u7531 ViewBinding\u662fGoogle\u767c\u4f48\u7684\u4e00\u500bView\u7d81\u5b9a\u6846\u67b6\uff0c\u76ee\u7684\u662f\u70ba\u4e86\u8981\u8b93\u958b\u767c\u8005\u7528\u66f4\u7c21\u55ae\u7684\u65b9\u5f0f\u53d6\u4ee3f &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[10,32],"class_list":["post-1148","post","type-post","status-publish","format-standard","hentry","category-2","tag-android-app","tag-32"],"_links":{"self":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/1148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1148"}],"version-history":[{"count":3,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/1148\/revisions"}],"predecessor-version":[{"id":1222,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=\/wp\/v2\/posts\/1148\/revisions\/1222"}],"wp:attachment":[{"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ray650128.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}