{"id":58401,"date":"2024-10-12T20:24:19","date_gmt":"2024-10-12T12:24:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/58401\/"},"modified":"2024-10-12T20:24:19","modified_gmt":"2024-10-12T12:24:19","slug":"android%e5%b7%a5%e7%a8%8b%e5%a6%82%e4%bd%95%e5%b0%8e%e5%85%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e5%b0%8e%e5%85%a5android%e5%b7%a5%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/58401\/","title":{"rendered":"Android\u5de5\u7a0b\u5982\u4f55\u5c0e\u5165\u6578\u64da\u5eab\u6587\u4ef6 (\u6578\u64da\u5eab\u6587\u4ef6\u5c0e\u5165android\u5de5\u7a0b)"},"content":{"rendered":"

Android\u5de5\u7a0b\u5982\u4f55\u5c0e\u5165\u6578\u64da\u5eab\u6587\u4ef6<\/h1>\n

\u5728Android\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u7121\u8ad6\u662f\u7528\u65bc\u5b58\u5132\u7528\u6236\u6578\u64da\u3001\u61c9\u7528\u8a2d\u7f6e\u9084\u662f\u5176\u4ed6\u4fe1\u606f\uff0c\u6578\u64da\u5eab\u90fd\u80fd\u63d0\u4f9b\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u65b9\u6848\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5c07\u6578\u64da\u5eab\u6587\u4ef6\u5c0e\u5165\u5230Android\u5de5\u7a0b\u4e2d\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6b65\u9a5f\u3002<\/p>\n

1. \u6578\u64da\u5eab\u6587\u4ef6\u7684\u6e96\u5099<\/h2>\n

\u9996\u5148\uff0c\u60a8\u9700\u8981\u6e96\u5099\u4e00\u500bSQLite\u6578\u64da\u5eab\u6587\u4ef6\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528SQLite\u5de5\u5177\uff08\u5982DB Browser for SQLite\uff09\u4f86\u5275\u5efa\u548c\u7de8\u8f2f\u6578\u64da\u5eab\u3002\u5b8c\u6210\u5f8c\uff0c\u5c07\u6578\u64da\u5eab\u6587\u4ef6\uff08\u901a\u5e38\u662f\u4ee5.db\u6216.sqlite\u70ba\u64f4\u5c55\u540d\u7684\u6587\u4ef6\uff09\u4fdd\u5b58\u5230\u60a8\u7684\u8a08\u7b97\u6a5f\u4e0a\u3002<\/p>\n

2. \u5c07\u6578\u64da\u5eab\u6587\u4ef6\u6dfb\u52a0\u5230Android\u5de5\u7a0b\u4e2d<\/h2>\n

\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5c07\u6578\u64da\u5eab\u6587\u4ef6\u6dfb\u52a0\u5230Android\u5de5\u7a0b\u4e2d\u3002\u901a\u5e38\uff0c\u6578\u64da\u5eab\u6587\u4ef6\u61c9\u653e\u7f6e\u5728\u4ee5\u4e0b\u8def\u5f91\uff1a<\/p>\n

app\/src\/main\/assets\/<\/code><\/pre>\n
\u5982\u679cassets\u6587\u4ef6\u593e\u4e0d\u5b58\u5728\uff0c\u60a8\u53ef\u4ee5\u624b\u52d5\u5275\u5efa\u4e00\u500b\u3002\u5c07\u6578\u64da\u5eab\u6587\u4ef6\u8907\u88fd\u5230\u8a72\u6587\u4ef6\u593e\u4e2d\u3002<\/p>\n
3. \u5275\u5efa\u6578\u64da\u5eab\u5e6b\u52a9\u985e<\/h2>\n
\u70ba\u4e86\u5728Android\u61c9\u7528\u4e2d\u4f7f\u7528\u6578\u64da\u5eab\uff0c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500b\u6578\u64da\u5eab\u5e6b\u52a9\u985e\u3002\u9019\u500b\u985e\u5c07\u8ca0\u8cac\u6578\u64da\u5eab\u7684\u5275\u5efa\u548c\u7ba1\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n
public class DatabaseHelper extends SQLiteOpenHelper {\n    private static final String DATABASE_NAME = \"your_database_name.db\";\n    private static final int DATABASE_VERSION = 1;\n    private Context context;\n\n    public DatabaseHelper(Context context) {\n        super(context, DATABASE_NAME, null, DATABASE_VERSION);\n        this.context = context;\n    }\n\n    @Override\n    public void onCreate(SQLiteDatabase db) {\n        \/\/ \u5728\u9019\u88e1\u5275\u5efa\u8868\u683c\n    }\n\n    @Override\n    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {\n        \/\/ \u5728\u9019\u88e1\u8655\u7406\u6578\u64da\u5eab\u5347\u7d1a\n    }\n\n    public void createDatabase() throws IOException {\n        boolean dbExist = checkDatabase();\n        if (!dbExist) {\n            this.getReadableDatabase();\n            try {\n                copyDatabase();\n            } catch (IOException e) {\n                throw new Error(\"Error copying database\");\n            }\n        }\n    }\n\n    private boolean checkDatabase() {\n        SQLiteDatabase checkDB = null;\n        try {\n            String path = context.getDatabasePath(DATABASE_NAME).getPath();\n            checkDB = SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READONLY);\n        } catch (SQLiteException e) {\n            \/\/ \u6578\u64da\u5eab\u4e0d\u5b58\u5728\n        }\n        if (checkDB != null) {\n            checkDB.close();\n        }\n        return checkDB != null;\n    }\n\n    private void copyDatabase() throws IOException {\n        InputStream input = context.getAssets().open(DATABASE_NAME);\n        String outFileName = context.getDatabasePath(DATABASE_NAME).getPath();\n        OutputStream output = new FileOutputStream(outFileName);\n        byte[] buffer = new byte[1024];\n        int length;\n        while ((length = input.read(buffer)) > 0) {\n            output.write(buffer, 0, length);\n        }\n        output.flush();\n        output.close();\n        input.close();\n    }\n}<\/code><\/pre>\n
4. \u4f7f\u7528\u6578\u64da\u5eab<\/h2>\n
\u5728\u60a8\u7684\u6d3b\u52d5\u6216\u7247\u6bb5\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528DatabaseHelper\u985e\u4f86\u8a2a\u554f\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n
DatabaseHelper dbHelper = new DatabaseHelper(this);\ntry {\n    dbHelper.createDatabase();\n} catch (IOException e) {\n    e.printStackTrace();\n}\nSQLiteDatabase db = dbHelper.getReadableDatabase();\n\/\/ \u5728\u9019\u88e1\u57f7\u884c\u67e5\u8a62\u6216\u5176\u4ed6\u64cd\u4f5c\n<\/code><\/pre>\n
5. \u7e3d\u7d50<\/h2>\n
\u5c0e\u5165\u6578\u64da\u5eab\u6587\u4ef6\u5230Android\u5de5\u7a0b\u4e2d\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u53ea\u9700\u5e7e\u500b\u6b65\u9a5f\u5373\u53ef\u5b8c\u6210\u3002\u901a\u904e\u6e96\u5099\u6578\u64da\u5eab\u6587\u4ef6\u3001\u5c07\u5176\u6dfb\u52a0\u5230assets\u6587\u4ef6\u593e\u3001\u5275\u5efa\u6578\u64da\u5eab\u5e6b\u52a9\u985e\u4ee5\u53ca\u5728\u61c9\u7528\u4e2d\u4f7f\u7528\u5b83\uff0c\u60a8\u5c31\u53ef\u4ee5\u8f15\u9b06\u5730\u7ba1\u7406\u6578\u64da\u3002\u9019\u4e9b\u6b65\u9a5f\u4e0d\u50c5\u80fd\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u61c9\u7528\u548c\u6578\u64da\u5eab\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u9ad8\u6548\u7684\u6027\u80fd\u548c\u53ef\u9760\u7684\u6578\u64da\u7ba1\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728Android\u5de5\u7a0b\u4e2d\u5c0e\u5165\u6578\u64da\u5eab\u6587\u4ef6\uff0c\u7c21\u5316\u6578\u64da\u7ba1\u7406\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\u8207\u7528\u6236\u9ad4\u9a57\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-58401","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58401","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=58401"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58401\/revisions"}],"predecessor-version":[{"id":58402,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58401\/revisions\/58402"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=58401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=58401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=58401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}