{"id":8498,"date":"2024-06-06T18:01:01","date_gmt":"2024-06-06T10:01:01","guid":{"rendered":""},"modified":"2024-06-06T18:01:01","modified_gmt":"2024-06-06T10:01:01","slug":"\u5b89\u5353\u58f0\u660e_Android \u8bbe\u8ba1\u6a21\u5f0f","status":"publish","type":"post","link":"https:\/\/mushiming.com\/8498.html","title":{"rendered":"\u5b89\u5353\u58f0\u660e_Android \u8bbe\u8ba1\u6a21\u5f0f"},"content":{"rendered":"<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display: none;\"> \n <path stroke-linecap=\"round\" d=\"M5,0 0,2.5 5,5z\" id=\"raphael-marker-block\" style=\"-webkit-tap-highlight-color: rgba(0, 0, 0, 0);\"><\/path> \n<\/svg> <\/p>\n<h2>Android compose<\/h2>\n<p><strong>\u58f0\u660e\u5f0fUI\uff0c\u66f4\u7b80\u5355\u7684\u81ea\u5b9a\u4e49\uff1b<\/strong> \u5b9e\u65f6\u5e26\u4ea4\u4e92\u7684\u9884\u89c8\u529f\u80fd Compose \u5e76\u4e0d\u662f\u7c7b\u4f3c\u4e8eRecyclerview\u7684\u9ad8\u7ea7\u63a7\u4ef6\uff0c\u800c\u662f\u76f4\u63a5\u629b\u5f03\u4e86View\uff0cViewGroup\u90a3\u5957\u4e1c\u897f\uff0c\u4ece\u4e0a\u5230\u4e0b\u9c81\u4e86\u4e00\u5957\u5168\u65b0\u7684\u6846\u67b6\uff0c\u76f4\u767d\u70b9\u8bf4\u5c31\u662f\u5b83\u7684\u6e32\u67d3\u673a\u5236\uff0c\u5e03\u5c40\u673a\u5236\uff0c\u89e6\u6478\u7b97\u6cd5\uff0c\u4ee5\u53caUI \u5177\u4f53\u5199\u6cd5\u5168\u90fd\u662f\u65b0\u7684<\/p>\n<p><strong>Compose \u5b9e\u73b0\u4e86\u58f0\u660e\u5f0fUI\uff0c\u66ff\u4ee3\u4f20\u7edf\u7684\u547d\u4ee4\u662fUI\uff1b<\/strong> \u53ef\u80fd\u5bf9\u4e8e\u6211\u4eec\u6765\u8bf4\u7b2c\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\u4ec0\u4e48\u662f\u58f0\u660e\u5f0f\uff1f\u4ec0\u4e48\u662f\u547d\u4ee4\u5f0fUI\uff1f \u9996\u5148\u770b\u4e00\u4e0b\u58f0\u660e\u5f0fUI\u957f\u4ec0\u4e48\u6837<\/p>\n<p><strong>Compose\u662f\u7528kotlin\u6765\u5199\u7684\uff0c\u5b83\u7684\u6bcf\u4e00\u4e2a\u63a7\u4ef6\u90fd\u662f\u4e00\u4e2a\u51fd\u6570\u8c03\u7528\uff1b<\/strong> Text() Text()\u5e76\u4e0d\u4f1a\u521b\u5efa\u5bf9\u8c61\uff0c\u5b83\u4e0d\u662f\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u800c\u662f\u4e00\u4e2a\u666e\u901a\u51fd\u6570\uff1b\u4e3a\u4e86\u8fa8\u8bc6\u5ea6\uff0cCompose\u51fd\u6570\u5f00\u5934\u90fd\u662f\u5927\u5199;\u4e5f\u5c31\u662f\u4e00\u4e2aComposable<\/p>\n<p><strong>\u6709\u4eba\u4f1a\u7591\u95eeText\uff08\uff09\u5730\u5c42\u5230\u5e95\u662f\u4ec0\u4e48\uff0c\u662f\u4e2aTextview\u5417\uff1f<\/strong> \u5176\u5b9e\u5e76\u4e0d\u662f\u5b83\u662f\u66f4\u4e0b\u5c42Canvas\u90a3\u5957\u4e1c\u897f\uff0c Compose\u5404\u4e2a\u7ec4\u4ef6\u90fd\u662f\u72ec\u7acb\u7684\u65b0\u5b9e\u73b0<\/p>\n<p><strong>\u770b\u5b8c\u5b83\u7684\u5199\u6cd5\uff0c\u770b\u521a\u624d\u7684\u95ee\u9898\u4ec0\u4e48\u662f\u58f0\u660e\u5f0fUI\uff0c\u5b83\u8fd9\u4e48\u5199\u600e\u4e48\u5c31\u58f0\u660e\u5f0f\u4e86\uff0c\u5b83\u548c\u6211\u4eec\u4e00\u76f4\u4ee5\u6765\u7684\u5199\u6cd5\u6709\u4ec0\u4e48\u533a\u522b<\/strong><\/p>\n<pre class=\"language-java prettyprint linenums\"><code>&lt;pre mdtype=\"fences\" cid=\"n107\" lang=\"\" class=\"md-fences md-end-block ty-contain-cm modeLoaded\" spellcheck=\"false\" style=\"box-sizing: border-box; overflow: visible; font-family: var(--monospace); font-size: 0.9em; display: block; break-inside: avoid; text-align: left; white-space: normal; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;\"&gt;\n &lt;LinearLayout\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:orientation=\"vertical\"\n &gt;\n &lt;TextView\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:text=\"hello\"\n \/&gt;\n &lt;TextView\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:text=\"world\"\n \/&gt;\n &lt;\/LinearLayout&gt;&lt;\/pre&gt;\n<\/code><\/pre>\n<p><strong>\u8fd9\u662f\u4f20\u7edf\u5199\u6cd5\uff0c\u8fd8\u9700\u8981\u5728java\u4e2d findviewbyId\u83b7\u53d6\u63a7\u4ef6\u5bf9\u8c61\uff0c\u6765\u8fdb\u884c\u64cd\u4f5c\uff1b<\/strong> \u5176\u5b9e\u5bf9\u4e8e\u5e03\u5c40\u6765\u8bf4\uff0c\u5199\u6cd5\u5927\u540c\u5c0f\u5f02\uff0c\u4f46\u662f\u4e3a\u4ec0\u4e48\u4f20\u7edf\u5199\u6cd5\u53eb\u547d\u4ee4\u5f0f\uff0c\u800cCompose\u53eb\u58f0\u660e\u5f0f<\/p>\n<p><strong>\u5bf9\u4e8e\u58f0\u660e\u5f0f\u6765\u8bf4\uff0c\u4f60\u53ea\u9700\u8981\u628a\u63a7\u4ef6\u58f0\u660e\u51fa\u6765\uff0c\u800c\u4e0d\u9700\u8981\u624b\u52a8\u66f4\u65b0\uff1b<\/strong> \u5982\u5de6\u8fb9\u5bf9\u5e94\u7684Textview \u5b83\u5bf9\u5e94\u7684\u6570\u636e\u6539\u53d8\u4e86\uff0c\u6211\u4eec\u600e\u4e48\u53bb\u66f4\u6539\u6570\u636e\u5462\uff0c\u9996\u5148\u662ffindviewbyId\u83b7\u53d6\u63a7\u4ef6\u5bf9\u8c61\uff0c\u7136\u540esetText\u6765\u8fdb\u884c\u6570\u636e\u53d8\u66f4\uff1b \u800c\u5982\u679c\u7528Compose\u5462\uff0c\u5219\u4e0d\u7528\u66f4\u65b0\uff0c\u5f53\u6570\u636e\u6539\u53d8\u65f6Compose\u4f1a\u81ea\u52a8\u66f4\u65b0\u5230\u9875\u9762\u4e0a<\/p>\n<p><strong>\u8fd9\u4e2a\u81ea\u52a8\u8ba2\u9605\u529f\u80fd\u5f88\u5bb9\u6613\u4f7f\u7528\uff0c\u4f60\u53ea\u8981\u5728\u521d\u59cb\u5316\u65f6\u52a0\u4e0aby mutableStateOf,\u5269\u4e0b\u5168\u7531Compose\u81ea\u52a8\u641e\u5b9a\uff1b<\/strong> \u8fd9\u4e2a\u795e\u5947\u7684\u7279\u6027\uff0c\u662f\u5229\u7528\u4e86kotlin\u7684Property Delegation\u6765\u5b9e\u73b0\u7684\uff0c\u4e5f\u5c31\u8bf4\u660e\u4e86\u4e3a\u4ec0\u4e48Compose\u53ea\u80fd\u7528kotlin\u6765\u7f16\u5199\uff0c\u56e0\u4e3a\u4f7f\u7528\u5230\u4e86kotlin\u7684\u8bb8\u591a\u7279\u6027\uff0c\u800c\u8fd9\u4e9b\u7279\u6027\u4f7f\u7528java \u4e0d\u80fd\u7b80\u5355\u5b9e\u73b0<\/p>\n<p><strong>\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u58f0\u660e\u5f0fUI\uff0c\u4f60\u53ea\u8981\u58f0\u660e\u9875\u9762\u662f\u4ec0\u4e48\u6837\u5b50,\u4e0d\u7528\u624b\u52a8\u53bb\u66f4\u65b0\uff1b<\/strong> \u56e0\u4e3a\u9875\u9762\u4f1a\u81ea\u52a8\u66f4\u65b0\uff0c\u4f20\u7edf\u9875\u9762\u5982\u679c\u6570\u636e\u53d1\u751f\u6539\u53d8\uff0c\u8981\u4f7f\u7528\u4ee3\u7801\uff0c\u7ed9\u51fa\u8be6\u7ec6\u6b65\u9aa4\u547d\u4ee4\u4ee3\u7801\u53bb\u66f4\u65b0\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u547d\u4ee4\u5f0f<\/p>\n<p><strong>\u4f20\u7edf\u7684\u6240\u8c13\u547d\u4ee4\u5f0f\uff0c\u5e76\u4e0d\u5728XML\u90e8\u5206\uff0c\u800c\u662f\u5728\u4e8ejava\u90e8\u5206\uff1b<\/strong> java\u4ee3\u7801\u53bb\u6307\u6325\u53bb\u547d\u4ee4\u63a7\u4ef6\u53bb\u66f4\u65b0\uff0c\u8fd9\u624d\u662f\u547d\u4ee4\u5f0f\u542b\u4e49\u6240\u5728\uff0c\u800cCompose\u901a\u8fc7\u8ba2\u9605\u673a\u5236\u6765\u66f4\u65b0UI\uff0c\u4e0d\u9700\u8981\u6307\u6325\u63a7\u4ef6\u53bb\u66f4\u65b0\uff0c\u6240\u4ee5\u662f\u58f0\u660e\u5f0f\uff1b \u5b83\u5e76\u4e0d\u662f\u8bed\u8a00\u89d2\u5ea6\u7684\u5b9a\u4e49\uff0c\u4e5f\u4e0d\u662f\u5199\u6cd5\u89d2\u5ea6\u5b9a\u4e49\uff0c\u800c\u662f\u529f\u80fd\u89d2\u5ea6<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4\u5982\u679c\u4f20\u7edf\u7684XML\u80fd\u901a\u8fc7\u6570\u636e\u548c\u9875\u9762\u8fdb\u884c\u5173\u8054\uff0c\u8ba9\u9875\u9762\u81ea\u52a8\u66f4\u65b0\uff0c\u800c\u4e0d\u662f\u8ba9\u54b1\u4eec\u53bb\u6307\u5b9a\u66f4\u65b0\uff0c\u90a3<\/p>\n","protected":false},"excerpt":{"rendered":"\u5b89\u5353\u58f0\u660e_Android \u8bbe\u8ba1\u6a21\u5f0f\u58f0\u660e\u5f0fUI\uff0c\u66f4\u7b80\u5355\u7684\u81ea\u5b9a\u4e49\uff1b\u5b9e\u65f6\u5e26\u4ea4\u4e92\u7684\u9884\u89c8\u529f\u80fdCompose\u5e76\u4e0d\u662f\u7c7b\u4f3c\u4e8eRecyclerview\u7684\u9ad8\u7ea7\u63a7\u4ef6\uff0c\u800c...","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/8498"}],"collection":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/comments?post=8498"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/8498\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=8498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=8498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=8498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}