{"id":260106,"date":"2024-05-15T13:24:43","date_gmt":"2024-05-15T05:24:43","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/260106.html"},"modified":"2024-05-15T13:24:48","modified_gmt":"2024-05-15T05:24:48","slug":"android%e9%87%8cjava%e4%bb%a3%e7%a0%81%e5%a3%b0%e6%98%8e%e6%8e%a7%e4%bb%b6%e6%80%bb%e6%98%af%e9%94%99%e8%af%af%e6%98%af%e4%b8%ba%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/260106.html","title":{"rendered":"Android\u91ccJava\u4ee3\u7801\u58f0\u660e\u63a7\u4ef6\u603b\u662f\u9519\u8bef\u662f\u4e3a\u4ec0\u4e48"},"content":{"rendered":"

\"Android\u91ccJava\u4ee3\u7801\u58f0\u660e\u63a7\u4ef6\u603b\u662f\u9519\u8bef\u662f\u4e3a\u4ec0\u4e48\"<\/p>\n

\u5728Android\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0cJava\u4ee3\u7801\u4e2d\u63a7\u4ef6\u58f0\u660e\u9519\u8bef<\/strong>\u901a\u5e38\u7531\u4ee5\u4e0b\u56e0\u7d20\u5f15\u8d77\uff1a\u63a7\u4ef6ID\u4e0d\u5339\u914d\u3001\u5e03\u5c40\u6587\u4ef6\u672a\u6b63\u786e\u5bfc\u5165\u3001\u751f\u547d\u5468\u671f\u95ee\u9898\u3001\u63a7\u4ef6\u7c7b\u578b\u4e0d\u5339\u914d<\/strong>\u3002\u4e3b\u8981\u539f\u56e0\u662f\u63a7\u4ef6ID\u4e0d\u5339\u914d\uff0c\u8fd9\u610f\u5473\u7740\u5728Java\u6587\u4ef6\u4e2d\u901a\u8fc7findViewById<\/code>\u8c03\u7528\u7684\u8d44\u6e90ID\u548cXML\u5e03\u5c40\u6587\u4ef6\u4e2d\u5b9a\u4e49\u7684\u63a7\u4ef6ID\u4e0d\u4e00\u81f4\u3002\u8fd9\u901a\u5e38\u53d1\u751f\u5728\u5bf9XML\u6587\u4ef6\u505a\u4e86\u66f4\u6539\u4e4b\u540e\uff0c\u5982\u679c\u6ca1\u6709\u53ca\u65f6\u66f4\u65b0Java\u4ee3\u7801\u6216\u8005XML\u5e03\u5c40\u4e2d\u7684ID\uff0c\u5c31\u53ef\u80fd\u5bfc\u81f4\u9519\u8bef\u3002\u6b64\u5916\uff0c\u7ec6\u5fae\u7684\u7b14\u8bef\u6216\u91cd\u6784\u4ee3\u7801\u65f6\u9057\u6f0f\u66f4\u65b0\u90e8\u5206\u5f15\u7528\u4e5f\u662f\u5e38\u89c1\u539f\u56e0\u3002<\/p>\n<\/p>\n

\u4e00\u3001ID\u4e0d\u5339\u914d\u53ca\u89e3\u51b3\u65b9\u6cd5<\/h3>\n<\/p>\n

\u58f0\u660e\u63a7\u4ef6\u9519\u8bef<\/strong>\u6700\u5e38\u89c1\u7684\u539f\u56e0\u662f\u5728\u4ee3\u7801\u4e2d\u5f15\u7528\u4e86\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684ID\uff0c\u6216\u8005\u662fID\u5199\u9519\u4e86\u3002\u5728Android\u7684XML\u5e03\u5c40\u6587\u4ef6\u4e2d\uff0c\u63a7\u4ef6\u7684ID\u901a\u8fc7@+id\/your_id<\/code>\u7684\u65b9\u5f0f\u7ed9\u51fa\uff0c\u800c\u5728Java\u4ee3\u7801\u4e2d\u901a\u8fc7R.id.your_id<\/code>\u5f15\u7528\u8fd9\u4e2a\u63a7\u4ef6\u3002\u5982\u679c\u4e24\u8fb9\u7684ID\u4e0d\u4e00\u81f4\uff0c\u63a7\u4ef6\u5c31\u65e0\u6cd5\u6b63\u786e\u58f0\u660e\u3002<\/p>\n<\/p>\n

\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<\/p>\n

\u9996\u5148\u8981\u786e\u4fddXML\u5e03\u5c40\u6587\u4ef6\u4e2d\u63a7\u4ef6\u7684ID\u6b63\u786e\u65e0\u8bef\u3002\u7136\u540e\u68c0\u67e5Java\u4ee3\u7801\u4e2d\u662f\u5426\u6709\u5bf9\u5e94ID\u7684\u63a7\u4ef6\u58f0\u660e\uff0c\u786e\u4fdd\u4f7f\u7528\u4e86\u6b63\u786e\u7684ID\u3002\u5982\u679c\u521a\u521a\u4fee\u6539\u4e86XML\u6587\u4ef6\u4e2d\u7684ID\uff0c\u9700\u8981\u91cd\u65b0\u7f16\u8bd1\u9879\u76ee\uff0cIDE\u901a\u5e38\u4f1a\u81ea\u52a8\u66f4\u65b0R.java\u6587\u4ef6\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u786e\u4fddJava\u4ee3\u7801\u4e2d\u80fd\u591f\u627e\u5230\u6b63\u786e\u7684ID\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u5e03\u5c40\u6587\u4ef6\u672a\u6b63\u786e\u5bfc\u5165<\/h3>\n<\/p>\n

\u6709\u65f6\u5019\uff0c\u5e03\u5c40\u6587\u4ef6\u6ca1\u6709\u6b63\u786e\u5bfc\u5165\u4e5f\u4f1a\u5bfc\u81f4Java\u4ee3\u7801\u4e2d\u58f0\u660e\u63a7\u4ef6\u9519\u8bef\u3002\u4e00\u4e2a\u5178\u578b\u7684\u9519\u8bef\u662f\u5728Activity<\/code>\u4e2d\u4f7f\u7528setContentView()<\/code>\u65b9\u6cd5\u65f6\uff0c\u4f20\u5165\u4e86\u4e00\u4e2a\u9519\u8bef\u7684\u5e03\u5c40\u8d44\u6e90\u3002<\/p>\n<\/p>\n

\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<\/p>\n

\u68c0\u67e5setContentView(R.layout.your_layout_file);<\/code>\u4e2d\u7684your_layout_file<\/code>\u662f\u5426\u4e3a\u5f53\u524dActivity<\/code>\u9700\u8981\u52a0\u8f7d\u7684\u6b63\u786e\u5e03\u5c40\u6587\u4ef6\u3002\u6b64\u5916\uff0c\u5982\u679c\u4f7f\u7528\u4e86\u5305\u542b\u4e0d\u540c\u914d\u7f6e\u7684\u591a\u4e2a\u5e03\u5c40\u6587\u4ef6\uff08\u5982\u6a2a\u5c4f\u4e0e\u7ad6\u5c4f\uff09\uff0c\u4e5f\u8981\u786e\u4fdd\u5728Java\u4ee3\u7801\u4e2d\u6307\u5411\u4e86\u6b63\u786e\u7684\u8d44\u6e90\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u751f\u547d\u5468\u671f\u95ee\u9898<\/h3>\n<\/p>\n

\u5728Android\u4e2d\uff0c\u5c1d\u8bd5\u5728Activity<\/code>\u7684\u751f\u547d\u5468\u671f\u65b9\u6cd5\u5185\u90e8\u9519\u8bef\u5730\u58f0\u660e\u63a7\u4ef6\uff0c\u53ef\u80fd\u5bfc\u81f4\u63a7\u4ef6\u58f0\u660e\u51fa\u9519\u3002\u4f8b\u5982\uff0c\u5728onCreate()<\/code>\u65b9\u6cd5\u6267\u884c\u4e4b\u524d\u6216\u6267\u884csetContentView()<\/code>\u4e4b\u524d\u5c31\u5c1d\u8bd5\u8bbf\u95ee\u63a7\u4ef6\uff0c\u662f\u4f1a\u629b\u51fa\u5f02\u5e38\u7684\u3002<\/p>\n<\/p>\n

\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<\/p>\n

\u786e\u4fdd\u6240\u6709\u63a7\u4ef6\u7684\u58f0\u660e\u90fd\u5728setContentView()<\/code>\u4e4b\u540e\uff0c\u5e76\u5728\u9002\u5f53\u7684\u751f\u547d\u5468\u671f\u65b9\u6cd5\u4e2d\u5b8c\u6210\u3002\u901a\u5e38\u8fd9\u4e9b\u4ee3\u7801\u5e94\u5199\u5728onCreate()<\/code>\u65b9\u6cd5\u4e2d\uff0c\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1\u58f0\u660e\u63a7\u4ef6\u65f6\u5e03\u5c40\u5df2\u7ecf\u5b8c\u5168\u88ab\u52a0\u8f7d\u3002<\/p>\n<\/p>\n

\u56db\u3001\u63a7\u4ef6\u7c7b\u578b\u4e0d\u5339\u914d<\/h3>\n<\/p>\n

\u5982\u679c\u5728Java\u4ee3\u7801\u4e2d\u5c06\u4e00\u4e2aXML\u5b9a\u4e49\u7684\u63a7\u4ef6\u9519\u8ba4\u4e3a\u4e86\u53e6\u5916\u4e00\u79cd\u7c7b\u578b\u7684\u63a7\u4ef6\uff0c\u4e5f\u4f1a\u51fa\u73b0\u9519\u8bef\u3002\u6bd4\u5982\uff0c\u628a\u4e00\u4e2aTextView<\/code>\u63a7\u4ef6\u5f53\u6210Button<\/code>\u63a7\u4ef6\u6765\u5904\u7406\uff0c\u5c31\u4f1a\u5728\u7f16\u8bd1\u65f6\u6216\u8fd0\u884c\u65f6\u51fa\u9519\u3002<\/p>\n<\/p>\n

\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<\/p>\n

\u68c0\u67e5\u6bcf\u4e00\u4e2a\u63a7\u4ef6\u58f0\u660e\uff0c\u786e\u8ba4\u5b83\u4eec\u7684\u7c7b\u578b\u662f\u5426\u4e0eXML\u4e2d\u5b9a\u4e49\u7684\u7c7b\u578b\u4e00\u81f4\u3002\u5982\u679c\u6709\u7c7b\u578b\u8f6c\u6362\u9519\u8bef\uff0c\u9700\u8981\u4fee\u6539Java\u4ee3\u7801\u4e2d\u8be5\u63a7\u4ef6\u5bf9\u5e94\u7684\u7c7b\u578b\u58f0\u660e\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u5176\u4ed6\u5e38\u89c1\u9519\u8bef\u53ca\u89e3\u51b3\u65b9\u6cd5<\/h3>\n<\/p>\n

1. \u5bfc\u5165\u9519\u8bef\u7684\u7c7b<\/h4>\n<\/p>\n

\u6709\u65f6\u5019\u53ef\u80fd\u4e0d\u5c0f\u5fc3\u5bfc\u5165\u4e86\u9519\u8bef\u7684\u7c7b\uff0c\u5982\u5c06android.R<\/code>\u9519\u8bef\u5bfc\u5165\u3002<\/p>\n<\/p>\n

\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<\/p>\n

\u68c0\u67e5import\u8bed\u53e5\uff0c\u786e\u4fdd\u5bfc\u5165\u7684\u662f\u4f60\u5e94\u7528\u7684R.java<\/code>\u6587\u4ef6\uff0c\u800c\u975eAndroid\u7cfb\u7edf\u7684\u3002<\/p>\n<\/p>\n

2. \u6df7\u6dc6\u540e\u7684ID\u95ee\u9898<\/h4>\n<\/p>\n

\u5982\u679c\u4f60\u7684\u5e94\u7528\u4f7f\u7528\u4e86\u6df7\u6dc6\uff0c\u53ef\u80fd\u5728\u6df7\u6dc6\u8fc7\u7a0b\u4e2d\u67d0\u4e2a\u63a7\u4ef6\u7684ID\u88ab\u610f\u5916\u6539\u53d8\u6216\u79fb\u9664\u3002<\/p>\n<\/p>\n

\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<\/p>\n

\u786e\u4fdd\u6df7\u6dc6\u89c4\u5219\u914d\u7f6e\u6b63\u786e\uff0c\u4e0d\u4f1a\u5f71\u54cd\u63a7\u4ef6\u7684ID\u3002<\/p>\n<\/p>\n

3. \u81ea\u5b9a\u4e49\u63a7\u4ef6\u95ee\u9898<\/h4>\n<\/p>\n

\u5982\u679c\u662f\u81ea\u5b9a\u4e49\u7684\u63a7\u4ef6\uff0c\u53ef\u80fd\u4f1a\u56e0\u4e3a\u7c7b\u7684\u8def\u5f84\u9519\u8bef\u6216\u521d\u59cb\u5316\u6ca1\u6709\u6b63\u786e\u5b8c\u6210\u800c\u5bfc\u81f4\u95ee\u9898\u3002<\/p>\n<\/p>\n

\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<\/p>\n

\u68c0\u67e5\u81ea\u5b9a\u4e49\u63a7\u4ef6\u7684\u7c7b\u8def\u5f84\u662f\u5426\u6b63\u786e\uff0c\u5e76\u786e\u4fdd\u6709\u4e00\u4e2a\u6b63\u786e\u7684\u521d\u59cb\u5316\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u638c\u63e1\u5982\u4f55\u6b63\u786e\u58f0\u660e\u63a7\u4ef6\uff0c\u5728\u53d1\u73b0\u95ee\u9898\u65f6\u80fd\u591f\u8fc5\u901f\u5b9a\u4f4d\u5e76\u89e3\u51b3\uff0c\u662f\u6bcf\u4e00\u4e2aAndroid\u5f00\u53d1\u8005\u5fc5\u987b\u638c\u63e1\u7684\u6280\u80fd\u3002\u901a\u8fc7\u9075\u5faa\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u5927\u591a\u6570\u4e0e\u58f0\u660e\u63a7\u4ef6\u76f8\u5173\u7684\u95ee\u9898\u90fd\u53ef\u4ee5\u88ab\u89e3\u51b3\u3002<\/p>\n<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

\u4e3a\u4ec0\u4e48\u5728Android\u4e2d\u58f0\u660eJava\u4ee3\u7801\u4e2d\u7684\u63a7\u4ef6\u603b\u662f\u51fa\u73b0\u9519\u8bef\uff1f<\/strong><\/p>\n

    \n
  1. \n

    \u547d\u540d\u51b2\u7a81\u5bfc\u81f4\u9519\u8bef<\/strong>: \u5728Android\u4e2d\uff0c\u58f0\u660e\u63a7\u4ef6\u65f6\u53ef\u80fd\u4f1a\u51fa\u73b0\u547d\u540d\u51b2\u7a81\u7684\u9519\u8bef\u3002\u8fd9\u610f\u5473\u7740\u60a8\u5728\u5e03\u5c40\u6587\u4ef6\u4e2d\u58f0\u660e\u7684\u63a7\u4ef6\u4e0eJava\u4ee3\u7801\u4e2d\u7684\u53d8\u91cf\u91cd\u540d\u4e86\uff0c\u89e3\u51b3\u65b9\u6cd5\u662f\u786e\u4fdd\u4f7f\u7528\u4e0d\u540c\u7684\u547d\u540d\u6765\u907f\u514d\u51b2\u7a81\u3002<\/p>\n<\/li>\n

  2. \n

    \u627e\u4e0d\u5230\u63a7\u4ef6ID\u5bfc\u81f4\u9519\u8bef<\/strong>: \u53e6\u4e00\u4e2a\u5e38\u89c1\u7684\u9519\u8bef\u662f\u5728Java\u4ee3\u7801\u4e2d\u627e\u4e0d\u5230\u5e03\u5c40\u6587\u4ef6\u4e2d\u58f0\u660e\u7684\u63a7\u4ef6ID\u3002\u8fd9\u53ef\u80fd\u662f\u56e0\u4e3a\u60a8\u5728Java\u4ee3\u7801\u4e2d\u4f7f\u7528\u4e86\u9519\u8bef\u7684ID\u6216\u8005\u5fd8\u8bb0\u5728\u5e03\u5c40\u6587\u4ef6\u4e2d\u58f0\u660e\u8be5\u63a7\u4ef6ID\u3002\u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u8bf7\u68c0\u67e5\u60a8\u7684\u5e03\u5c40\u6587\u4ef6\u4e2d\u7684\u63a7\u4ef6ID\u662f\u5426\u4e0eJava\u4ee3\u7801\u4e2d\u5f15\u7528\u7684ID\u4e00\u81f4\u3002<\/p>\n<\/li>\n

  3. \n

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