{"id":314649,"date":"2024-05-20T23:39:35","date_gmt":"2024-05-20T15:39:35","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/314649.html"},"modified":"2024-05-20T23:39:50","modified_gmt":"2024-05-20T15:39:50","slug":"android-%e4%b8%ad%e6%95%b0%e6%8d%ae%e5%ad%98%e5%82%a8%e6%96%b9%e5%bc%8f%e6%9c%89%e5%93%aa%e4%ba%9b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/314649.html","title":{"rendered":"Android \u4e2d\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u6709\u54ea\u4e9b"},"content":{"rendered":"

\"Android<\/p>\n

\u5728Android\u5f00\u53d1\u4e2d\uff0c\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u591a\u6837\u3001\u7075\u6d3b\uff0c\u4e3b\u8981\u5305\u62ec\u5171\u4eab\u504f\u597d\uff08SharedPreferences\uff09\u3001\u5185\u90e8\u5b58\u50a8\u3001\u5916\u90e8\u5b58\u50a8\u3001SQLite\u6570\u636e\u5e93\u3001\u548c\u7f51\u7edc\u5b58\u50a8<\/strong>\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5404\u6709\u4f18\u52bf\uff0c\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n

\u5171\u4eab\u504f\u597d\uff08SharedPreferences\uff09\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u5b58\u50a8\u65b9\u5f0f\uff0c\u5b83\u901a\u8fc7\u952e\u503c\u5bf9\u7684\u5f62\u5f0f\u4fdd\u5b58\u6570\u636e\uff0c\u4e3b\u8981\u7528\u4e8e\u5b58\u50a8\u4e00\u4e9b\u7b80\u5355\u7684\u914d\u7f6e\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u5e94\u7528\u7684\u6b22\u8fce\u9875\u9762\u662f\u5426\u5df2\u7ecf\u663e\u793a\u8fc7\u6216\u8005\u7528\u6237\u7684\u504f\u597d\u8bbe\u7f6e\u3002SharedPreferences<\/strong>\u5728\u8bfb\u5199\u901f\u5ea6\u4e0a\u76f8\u5bf9\u8f83\u5feb\uff0c\u4f46\u5b83\u4e0d\u9002\u5408\u5b58\u50a8\u5927\u91cf\u7684\u6570\u636e\u6216\u8005\u7ed3\u6784\u5316\u6570\u636e\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5171\u4eab\u504f\u597d\uff08SharedPreferences\uff09<\/h3>\n<\/p>\n

SharedPreferences\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u4fdd\u5b58\u5c11\u91cf\u6570\u636e\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528getContext().getSharedPreferences(name, mode)<\/code>\u83b7\u53d6SharedPreferences\u5b9e\u4f8b\uff0c\u5176\u4e2dname<\/code>\u662f\u4f60\u7684\u504f\u597d\u6587\u4ef6\u540d\uff0cmode<\/code>\u662f\u6587\u4ef6\u64cd\u4f5c\u6a21\u5f0f\u3002<\/p>\n<\/p>\n

\u8981\u4fdd\u5b58\u6570\u636e\uff0c\u53ea\u9700\u7f16\u8f91SharedPreferences\u5b9e\u4f8b\u4e2d\u7684\u6570\u636e\uff0c\u7136\u540e\u63d0\u4ea4\u3002\u6570\u636e\u7684\u4fdd\u5b58\u5f62\u5f0f\u662f\u952e\u503c\u5bf9\uff0c\u652f\u6301\u57fa\u672c\u7c7b\u578b\u6570\u636e\uff08\u5982int\u3001float\u3001long\u3001String\u7b49\uff09\u7684\u5b58\u50a8\u3002\u8fd9\u79cd\u65b9\u5f0f\u7684\u4f18\u70b9\u662f\u64cd\u4f5c\u7b80\u5355\u3001\u76f4\u89c2\uff0c\u975e\u5e38\u9002\u7528\u4e8e\u5b58\u50a8\u5c11\u91cf\u7684\u914d\u7f6e\u4fe1\u606f\u3002\u4f46\u662f\uff0c\u5bf9\u4e8e\u9700\u8981\u5b58\u50a8\u5927\u91cf\u6570\u636e\u6216\u590d\u6742\u7ed3\u6784\u7684\u6570\u636e\uff0cSharedPreferences\u53ef\u80fd\u5c31\u4e0d\u592a\u5408\u9002\u4e86\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u5185\u90e8\u5b58\u50a8<\/h3>\n<\/p>\n

\u5185\u90e8\u5b58\u50a8\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5728Android\u8bbe\u5907\u4e0a\u79c1\u6709\u7684\u6587\u4ef6\u7cfb\u7edf\u76ee\u5f55\uff0c\u5e94\u7528\u53ef\u4ee5\u5728\u8be5\u76ee\u5f55\u4e0b\u4fdd\u5b58\u6570\u636e\u6587\u4ef6\u3002\u8fd9\u4e9b\u6570\u636e\u6587\u4ef6\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u53ea\u80fd\u88ab\u81ea\u5df1\u7684\u5e94\u7528\u8bbf\u95ee\uff0c\u4fdd\u8bc1\u4e86\u6570\u636e\u7684\u9690\u79c1\u6027\u3002<\/p>\n<\/p>\n

\u4f60\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528context.openFileOutput(filename, mode)<\/code>\u65b9\u6cd5\u83b7\u5f97\u4e00\u4e2aFileOutputStream\u5bf9\u8c61\uff0c\u7136\u540e\u5c31\u53ef\u4ee5\u5f80\u8fd9\u4e2a\u6587\u4ef6\u4e2d\u5199\u5165\u6570\u636e\u4e86\u3002\u540c\u6837\u53ef\u4ee5\u4f7f\u7528context.openFileInput(filename)<\/code>\u6765\u8bfb\u53d6\u6587\u4ef6\u3002\u5185\u90e8\u5b58\u50a8\u7a7a\u95f4\u76f8\u5bf9\u6709\u9650\uff0c\u9002\u7528\u4e8e\u4fdd\u5b58\u4e9b\u6587\u672c\u6570\u636e\u6216\u8005\u5c0f\u7684\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u4e0d\u5b9c\u5b58\u50a8\u5927\u6587\u4ef6\u6216\u8005\u5927\u91cf\u6570\u636e\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u5916\u90e8\u5b58\u50a8<\/h3>\n<\/p>\n

\u5916\u90e8\u5b58\u50a8\u5219\u6307\u8bbe\u5907\u4e0a\u7684\u53ef\u79fb\u9664\u5b58\u50a8\u7a7a\u95f4\uff0c\u5982SD\u5361\u3002\u4f7f\u7528\u5916\u90e8\u5b58\u50a8\u53ef\u4ee5\u5b58\u50a8\u8f83\u5927\u7684\u6570\u636e\u6587\u4ef6\u6216\u5171\u4eab\u6587\u4ef6\u7ed9\u5176\u4ed6\u5e94\u7528\u3002\u4f46\u662f\uff0c\u8bbf\u95ee\u5916\u90e8\u5b58\u50a8\u9700\u8981\u9002\u5f53\u7684\u8bfb\u5199\u6743\u9650\uff0c\u5e76\u4e14\u5916\u90e8\u5b58\u50a8\u7684\u53ef\u7528\u6027\u4e5f\u4e0d\u80fd\u5b8c\u5168\u4fdd\u8bc1\u3002<\/p>\n<\/p>\n

Android\u63d0\u4f9b\u4e86Environment<\/code>\u7c7b\u6765\u64cd\u4f5c\u5916\u90e8\u5b58\u50a8\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7Environment.getExternalStorageState()<\/code>\u68c0\u67e5\u5916\u90e8\u5b58\u50a8\u7684\u72b6\u6001\uff0c\u786e\u4fdd\u5b83\u5904\u4e8e\u6302\u8f7d\uff08\u53ef\u7528\uff09\u72b6\u6001\u3002\u7136\u540e\u53ef\u4ee5\u901a\u8fc7Context.getExternalFilesDir(type)<\/code>\u7b49\u65b9\u6cd5\u83b7\u53d6\u5b58\u50a8\u8def\u5f84\u3002\u8003\u8651\u5230\u6570\u636e\u5b89\u5168\u6027\u548c\u7528\u6237\u9690\u79c1\uff0c\u5916\u90e8\u5b58\u50a8\u9002\u7528\u4e8e\u5b58\u50a8\u975e\u654f\u611f\u3001\u4e0d\u9700\u8981\u4fdd\u5bc6\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n

\u56db\u3001SQLite\u6570\u636e\u5e93<\/h3>\n<\/p>\n

SQLite\u6570\u636e\u5e93\u63d0\u4f9b\u4e86\u4e00\u79cd\u7ed3\u6784\u5316\u7684\u6570\u636e\u5b58\u50a8\u65b9\u6cd5\u3002SQLite\u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u6570\u636e\u5e93\u5f15\u64ce\uff0c\u5b83\u5b58\u50a8\u5728\u4e00\u4e2a\u5355\u4e00\u7684\u78c1\u76d8\u6587\u4ef6\u4e0a\u3002Android\u5185\u7f6e\u4e86SQLite\u6570\u636e\u5e93\u7684\u652f\u6301\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5229\u7528\u5b83\u6765\u8fdb\u884c\u590d\u6742\u7684\u6570\u636e\u5b58\u50a8\u64cd\u4f5c\u3002<\/p>\n<\/p>\n

\u64cd\u4f5cSQLite\u6570\u636e\u5e93\u901a\u5e38\u6d89\u53ca\u5230\u521b\u5efa\u6570\u636e\u5e93\u3001\u5b9a\u4e49\u6570\u636e\u7ed3\u6784\u3001\u63d2\u5165\u3001\u67e5\u8be2\u3001\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e\u7b49\u64cd\u4f5c\u3002\u901a\u8fc7SQLiteOpenHelper\u548cSQLiteDatabase\u7c7b\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u7ba1\u7406\u6570\u636e\u5e93\u7684\u521b\u5efa\u548c\u7248\u672c\u7ba1\u7406\u3002\u7531\u4e8eSQLite\u6570\u636e\u5e93\u5b58\u50a8\u5728\u5185\u90e8\u5b58\u50a8\u4e2d\uff0c\u5b83\u7ee7\u627f\u4e86\u5185\u90e8\u5b58\u50a8\u7684\u6570\u636e\u79c1\u6709\u6027\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u7f51\u7edc\u5b58\u50a8<\/h3>\n<\/p>\n

\u7f51\u7edc\u5b58\u50a8\u6307\u7684\u662f\u5c06\u6570\u636e\u5b58\u50a8\u5728\u7f51\u7edc\u670d\u52a1\u5668\u4e0a\uff0c\u800c\u975e\u672c\u5730\u3002\u8fd9\u8981\u6c42\u5e94\u7528\u80fd\u591f\u8bbf\u95ee\u4e92\u8054\u7f51\u3002\u901a\u8fc7\u7f51\u7edc\u5b58\u50a8\uff0c\u6570\u636e\u53ef\u4ee5\u8de8\u8bbe\u5907\u5171\u4eab\uff0c\u8fd8\u53ef\u4ee5\u505a\u5230\u6570\u636e\u7684\u4e2d\u5fc3\u5316\u7ba1\u7406\u3002<\/p>\n<\/p>\n

Android\u5e94\u7528\u901a\u5e38\u901a\u8fc7HTTP\u534f\u8bae\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u6570\u636e\u4ea4\u4e92\uff0c\u4f7f\u7528\u8bf8\u5982Volley\u3001Retrofit\u8fd9\u6837\u7684\u7f51\u7edc\u5e93\u6765\u7b80\u5316\u7f51\u7edc\u64cd\u4f5c\u3002\u7f51\u7edc\u5b58\u50a8\u9002\u7528\u4e8e\u9700\u8981\u6570\u636e\u5907\u4efd\u3001\u6570\u636e\u5171\u4eab\u6216\u8de8\u8bbe\u5907\u540c\u6b65\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n

\u7efc\u4e0a\u6240\u8ff0\uff0cAndroid\u4e2d\u7684\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u5305\u62ec\u5171\u4eab\u504f\u597d\u3001\u5185\u90e8\u5b58\u50a8\u3001\u5916\u90e8\u5b58\u50a8\u3001SQLite\u6570\u636e\u5e93\u548c\u7f51\u7edc\u5b58\u50a8<\/strong>\uff0c\u6bcf\u79cd\u65b9\u5f0f\u90fd\u6709\u5176\u9002\u7528\u573a\u666f\u548c\u4f18\u7f3a\u70b9\u3002\u5f00\u53d1\u8005\u5e94\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u6700\u5408\u9002\u7684\u5b58\u50a8\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<\/p>\n

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

\u4ec0\u4e48\u662fAndroid\u4e2d\u7684\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\uff1f<\/strong>
\nAndroid\u4e2d\u7684\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u662f\u6307\u5728Android\u5e94\u7528\u4e2d\u5b58\u50a8\u6570\u636e\u7684\u4e0d\u540c\u65b9\u6cd5\u548c\u6280\u672f\u3002\u5b83\u4eec\u53ef\u4ee5\u7528\u4e8e\u4fdd\u5b58\u5e94\u7528\u914d\u7f6e\u4fe1\u606f\u3001\u7528\u6237\u6570\u636e\u3001\u7f13\u5b58\u6570\u636e\u7b49\uff0c\u5e76\u4e14\u53ef\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u9002\u5408\u7684\u5b58\u50a8\u65b9\u5f0f\u3002<\/p>\n

Android\u4e2d\u6709\u54ea\u4e9b\u5e38\u7528\u7684\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\uff1f<\/strong>
\nAndroid\u4e2d\u5e38\u7528\u7684\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u5305\u62ecShared Preferences\u3001SQLite\u6570\u636e\u5e93\u3001\u6587\u4ef6\u5b58\u50a8\u548c\u7f51\u7edc\u5b58\u50a8\u3002<\/p>\n

    \n
  • \n

    Shared Preferences\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u5b58\u50a8\u65b9\u5f0f\uff0c\u9002\u5408\u5b58\u50a8\u7b80\u5355\u7684\u952e\u503c\u5bf9\u6570\u636e\uff0c\u6bd4\u5982\u7528\u6237\u504f\u597d\u8bbe\u7f6e\u3002\u5b83\u7684\u8bfb\u5199\u901f\u5ea6\u8f83\u5feb\uff0c\u4f46\u9002\u7528\u4e8e\u5c11\u91cf\u6570\u636e\u5b58\u50a8\u3002<\/p>\n<\/li>\n

  • \n

    SQLite\u6570\u636e\u5e93\u662f\u4e00\u79cd\u7ed3\u6784\u5316\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\uff0c\u9002\u5408\u5b58\u50a8\u5927\u91cf\u7ed3\u6784\u5316\u6570\u636e\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u4f7f\u7528SQLiteOpenHelper\u7c7b\u6765\u521b\u5efa\u548c\u7ba1\u7406\u6570\u636e\u5e93\uff0c\u4f7f\u7528SQL\u8bed\u8a00\u8fdb\u884c\u6570\u636e\u64cd\u4f5c\u3002<\/p>\n<\/li>\n

  • \n

    \u6587\u4ef6\u5b58\u50a8\u662f\u6307\u5c06\u6570\u636e\u4ee5\u6587\u4ef6\u5f62\u5f0f\u5b58\u50a8\u5728\u8bbe\u5907\u7684\u5185\u90e8\u5b58\u50a8\u5668\u6216\u5916\u90e8\u5b58\u50a8\u5668\u4e0a\u3002\u53ef\u4ee5\u4f7f\u7528File\u7c7b\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u9002\u7528\u4e8e\u5b58\u50a8\u8f83\u5927\u7684\u975e\u7ed3\u6784\u5316\u6570\u636e\uff0c\u5982\u56fe\u7247\u3001\u97f3\u9891\u3001\u89c6\u9891\u7b49\u3002<\/p>\n<\/li>\n

  • \n

    \u7f51\u7edc\u5b58\u50a8\u662f\u6307\u5c06\u6570\u636e\u5b58\u50a8\u5728\u8fdc\u7a0b\u670d\u52a1\u5668\u6216\u4e91\u7aef\uff0c\u901a\u8fc7\u7f51\u7edc\u8bf7\u6c42\u6765\u83b7\u53d6\u548c\u4f20\u8f93\u6570\u636e\u3002\u5e38\u89c1\u7684\u7f51\u7edc\u5b58\u50a8\u65b9\u5f0f\u6709\u4f7f\u7528Web API\u8fdb\u884c\u6570\u636e\u4ea4\u4e92\u3001\u4f7f\u7528\u4e91\u5b58\u50a8\u670d\u52a1\u5982Firebase\u7b49\u3002<\/p>\n<\/li>\n<\/ul>\n

    \u5982\u4f55\u9009\u62e9\u9002\u5408\u7684\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\uff1f<\/strong>
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