{"id":58405,"date":"2024-10-12T20:26:15","date_gmt":"2024-10-12T12:26:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/58405\/"},"modified":"2024-10-12T20:26:16","modified_gmt":"2024-10-12T12:26:16","slug":"android%e9%96%8b%e7%99%bc%ef%bc%9a%e5%bf%ab%e9%80%9f%e6%aa%a2%e6%b8%ac%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e7%9a%84%e5%ad%98%e5%9c%a8-android%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/58405\/","title":{"rendered":"Android\u958b\u767c\uff1a\u5feb\u901f\u6aa2\u6e2c\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u5728 (android\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u6587\u4ef6\u662f\u5426\u5b58\u5728)"},"content":{"rendered":"<h1 id=\"android%e9%96%8b%e7%99%bc%ef%bc%9a%e5%bf%ab%e9%80%9f%e6%aa%a2%e6%b8%ac%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e7%9a%84%e5%ad%98%e5%9c%a8-OJmWrpyAPF\">Android\u958b\u767c\uff1a\u5feb\u901f\u6aa2\u6e2c\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u5728<\/h1>\n<p>\u5728Android\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u662f\u975e\u5e38\u666e\u904d\u7684\uff0c\u5c24\u5176\u662fSQLite\u6578\u64da\u5eab\u3002\u958b\u767c\u8005\u7d93\u5e38\u9700\u8981\u6aa2\u67e5\u6578\u64da\u5eab\u6587\u4ef6\u662f\u5426\u5b58\u5728\uff0c\u4ee5\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7684\u6b63\u5e38\u904b\u884c\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728Android\u4e2d\u5feb\u901f\u6aa2\u6e2c\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u5728\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 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id=\"%e5%a6%82%e4%bd%95%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e7%9a%84%e5%ad%98%e5%9c%a8-OJmWrpyAPF\">\u5982\u4f55\u6aa2\u67e5\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u5728<\/h2>\n<p>\u5728Android\u4e2d\uff0c\u6578\u64da\u5eab\u6587\u4ef6\u901a\u5e38\u5b58\u5132\u5728\u61c9\u7528\u7684\u5167\u90e8\u5b58\u5132\u4e2d\u3002\u8981\u6aa2\u67e5\u6578\u64da\u5eab\u6587\u4ef6\u662f\u5426\u5b58\u5728\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f1%ef%bc%9a%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e8%b7%af%e5%be%91-OJmWrpyAPF\">\u6b65\u9a5f1\uff1a\u7372\u53d6\u6578\u64da\u5eab\u8def\u5f91<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u7372\u53d6\u6578\u64da\u5eab\u7684\u8def\u5f91\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u7372\u53d6\u6578\u64da\u5eab\u7684\u5b8c\u6574\u8def\u5f91\uff1a<\/p>\n<pre><code>String dbName = \"your_database_name.db\";\nString dbPath = context.getDatabasePath(dbName).getAbsolutePath();<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f2%ef%bc%9a%e6%aa%a2%e6%9f%a5%e6%96%87%e4%bb%b6%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8-OJmWrpyAPF\">\u6b65\u9a5f2\uff1a\u6aa2\u67e5\u6587\u4ef6\u662f\u5426\u5b58\u5728<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Java\u7684File\u985e\u4f86\u6aa2\u67e5\u6578\u64da\u5eab\u6587\u4ef6\u662f\u5426\u5b58\u5728\uff1a<\/p>\n<pre><code>File dbFile = new File(dbPath);\nif (dbFile.exists()) {\n    \/\/ \u6578\u64da\u5eab\u6587\u4ef6\u5b58\u5728\n} else {\n    \/\/ \u6578\u64da\u5eab\u6587\u4ef6\u4e0d\u5b58\u5728\n}<\/code><\/pre>\n<h2 id=\"%e5%ae%8c%e6%95%b4%e7%a4%ba%e4%be%8b-OJmWrpyAPF\">\u5b8c\u6574\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5b8c\u6574\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728Android\u61c9\u7528\u4e2d\u6aa2\u67e5\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u5728\uff1a<\/p>\n<pre><code>public boolean isDatabaseExist(Context context, String dbName) {\n    String dbPath = context.getDatabasePath(dbName).getAbsolutePath();\n    File dbFile = new File(dbPath);\n    return dbFile.exists();\n}<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70baisDatabaseExist\u7684\u65b9\u6cd5\uff0c\u8a72\u65b9\u6cd5\u63a5\u53d7\u4e0a\u4e0b\u6587\u548c\u6578\u64da\u5eab\u540d\u7a31\u4f5c\u70ba\u53c3\u6578\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u5e03\u723e\u503c\uff0c\u6307\u793a\u6578\u64da\u5eab\u6587\u4ef6\u662f\u5426\u5b58\u5728\u3002<\/p>\n<h2 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id=\"%e7%b5%90%e8%ab%96-OJmWrpyAPF\">\u7d50\u8ad6<\/h2>\n<p>\u6aa2\u67e5\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u5728\u662fAndroid\u958b\u767c\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u7c21\u55ae\u7684\u4ee3\u78bc\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5728Android\u4e2d\u6aa2\u67e5\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u5728\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u4f3a\u670d\u5668\u6216\u96f2\u670d\u52d9\u6709\u8208\u8da3\uff0c\u8acb\u53c3\u8003\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728Android\u958b\u767c\u4e2d\u5feb\u901f\u6aa2\u6e2c\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u5728\uff0c\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7684\u6578\u64da\u7ba1\u7406\u9ad8\u6548\u53ef\u9760\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-58405","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=58405"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58405\/revisions"}],"predecessor-version":[{"id":58406,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58405\/revisions\/58406"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=58405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=58405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=58405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}