{"id":150781,"date":"2024-11-01T16:41:24","date_gmt":"2024-11-01T08:41:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/150781\/"},"modified":"2024-11-01T16:41:26","modified_gmt":"2024-11-01T08:41:26","slug":"%e5%ae%89%e5%8d%93%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bd%bf%e7%94%a8%e6%95%99%e7%a8%8b%ef%bc%9a%e8%ae%93%e4%bd%a0%e8%bc%95%e9%ac%86%e7%ae%a1%e7%90%86%e6%95%b8%e6%93%9a-%e5%ae%89%e5%8d%93%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/150781\/","title":{"rendered":"\u5b89\u5353\u6578\u64da\u5eab\u4f7f\u7528\u6559\u7a0b\uff1a\u8b93\u4f60\u8f15\u9b06\u7ba1\u7406\u6578\u64da (\u5b89\u5353\u6578\u64da\u5eab\u4f7f\u7528\u6559\u7a0b)"},"content":{"rendered":"<h1 id=\"%e5%ae%89%e5%8d%93%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bd%bf%e7%94%a8%e6%95%99%e7%a8%8b%ef%bc%9a%e8%ae%93%e4%bd%a0%e8%bc%95%e9%ac%86%e7%ae%a1%e7%90%86%e6%95%b8%e6%93%9a-MHpHsbqQXJ\">\u5b89\u5353\u6578\u64da\u5eab\u4f7f\u7528\u6559\u7a0b\uff1a\u8b93\u4f60\u8f15\u9b06\u7ba1\u7406\u6578\u64da<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u79fb\u52d5\u61c9\u7528\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u5c0d\u65bc\u5b89\u5353\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u4e26\u638c\u63e1\u5176\u4f7f\u7528\u65b9\u6cd5\u662f\u6210\u529f\u7684\u95dc\u9375\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5b89\u5353\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5\u3001\u5e38\u7528\u6578\u64da\u5eab\u985e\u578b\u4ee5\u53ca\u5982\u4f55\u5728\u5b89\u5353\u61c9\u7528\u4e2d\u9032\u884c\u6578\u64da\u7ba1\u7406\u3002<\/p>\n<h2 id=\"%e5%ae%89%e5%8d%93%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-MHpHsbqQXJ\">\u5b89\u5353\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u6709\u7d44\u7e54\u7684\u6578\u64da\u96c6\u5408\uff0c\u5141\u8a31\u7528\u6236\u9032\u884c\u6578\u64da\u7684\u5b58\u5132\u3001\u6aa2\u7d22\u548c\u7ba1\u7406\u3002\u5728\u5b89\u5353\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u4e3b\u8981\u7528\u65bc\u5b58\u5132\u61c9\u7528\u7684\u6301\u4e45\u6578\u64da\u3002\u5b89\u5353\u5e73\u53f0\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\u6280\u8853\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u5305\u62ec SQLite\u3001Room \u548c Firebase Realtime Database\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e7%9a%84%e5%ae%89%e5%8d%93%e6%95%b8%e6%93%9a%e5%ba%ab%e9%a1%9e%e5%9e%8b-MHpHsbqQXJ\">\u5e38\u7528\u7684\u5b89\u5353\u6578\u64da\u5eab\u985e\u578b<\/h2>\n<h3 id=\"1-sqlite-MHpHsbqQXJ\">1. SQLite<\/h3>\n<p>SQLite \u662f\u5b89\u5353\u7cfb\u7d71\u5167\u5efa\u7684\u8f15\u91cf\u7d1a\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u3002\u5b83\u4e0d\u9700\u8981\u5b89\u88dd\u548c\u914d\u7f6e\uff0c\u4e26\u4e14\u652f\u6301 SQL \u8a9e\u8a00\u3002SQLite \u7684\u512a\u9ede\u5728\u65bc\u5176\u7c21\u55ae\u6027\u548c\u9ad8\u6548\u6027\uff0c\u9069\u5408\u7528\u65bc\u5c0f\u578b\u61c9\u7528\u548c\u55ae\u4e00\u7528\u6236\u7684\u6578\u64da\u5b58\u5132\u3002<\/p>\n<h3 id=\"2-room-MHpHsbqQXJ\">2. Room<\/h3>\n<p>Room \u662f Google \u63d0\u4f9b\u7684\u4e00\u500b\u6301\u4e45\u6027\u5eab\uff0c\u65e8\u5728\u7c21\u5316 SQLite \u7684\u4f7f\u7528\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u500b\u62bd\u8c61\u5c64\uff0c\u4f7f\u5f97\u6578\u64da\u5eab\u64cd\u4f5c\u66f4\u52a0\u7c21\u55ae\u548c\u5b89\u5168\u3002Room \u652f\u6301\u7de8\u8b6f\u6642\u6aa2\u67e5 SQL \u8a9e\u53e5\uff0c\u4e26\u4e14\u53ef\u4ee5\u81ea\u52d5\u751f\u6210\u6578\u64da\u5eab\u8a2a\u554f\u4ee3\u78bc\u3002<\/p>\n<h3 id=\"3-firebase-realtime-database-MHpHsbqQXJ\">3. Firebase Realtime Database<\/h3>\n<p>Firebase Realtime Database \u662f\u4e00\u500b\u96f2\u7aef\u6578\u64da\u5eab\uff0c\u9069\u5408\u9700\u8981\u5be6\u6642\u6578\u64da\u540c\u6b65\u7684\u61c9\u7528\u3002\u5b83\u652f\u6301 JSON \u683c\u5f0f\u7684\u6578\u64da\u5b58\u5132\uff0c\u4e26\u4e14\u53ef\u4ee5\u8f15\u9b06\u5730\u8207 Firebase \u7684\u5176\u4ed6\u670d\u52d9\u96c6\u6210\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8%e5%ae%89%e5%8d%93%e6%87%89%e7%94%a8%e4%b8%ad%e4%bd%bf%e7%94%a8-sqlite-MHpHsbqQXJ\">\u5982\u4f55\u5728\u5b89\u5353\u61c9\u7528\u4e2d\u4f7f\u7528 SQLite<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 SQLite \u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-1%ef%bc%9a%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab-MHpHsbqQXJ\">\u6b65\u9a5f 1\uff1a\u5275\u5efa\u6578\u64da\u5eab<\/h3>\n<pre><code>public class MyDatabaseHelper extends SQLiteOpenHelper {\n    private static final String DATABASE_NAME = \"mydatabase.db\";\n    private static final int DATABASE_VERSION = 1;\n\n    public MyDatabaseHelper(Context context) {\n        super(context, DATABASE_NAME, null, DATABASE_VERSION);\n    }\n\n    @Override\n    public void onCreate(SQLiteDatabase db) {\n        String createTable = \"CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT, age INTEGER)\";\n        db.execSQL(createTable);\n    }\n\n    @Override\n    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {\n        db.execSQL(\"DROP TABLE IF EXISTS users\");\n        onCreate(db);\n    }\n}<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-2%ef%bc%9a%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-MHpHsbqQXJ\">\u6b65\u9a5f 2\uff1a\u63d2\u5165\u6578\u64da<\/h3>\n<pre><code>public void addUser(String name, int age) {\n    SQLiteDatabase db = this.getWritableDatabase();\n    ContentValues values = new ContentValues();\n    values.put(\"name\", name);\n    values.put(\"age\", age);\n    db.insert(\"users\", null, values);\n    db.close();\n}<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-3%ef%bc%9a%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-MHpHsbqQXJ\">\u6b65\u9a5f 3\uff1a\u67e5\u8a62\u6578\u64da<\/h3>\n<pre><code>public Cursor getAllUsers() {\n    SQLiteDatabase db = this.getReadableDatabase();\n    return db.rawQuery(\"SELECT * FROM users\", null);\n}<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8-room-%e6%95%b8%e6%93%9a%e5%ba%ab-MHpHsbqQXJ\">\u4f7f\u7528 Room \u6578\u64da\u5eab<\/h2>\n<p>\u4f7f\u7528 Room \u6578\u64da\u5eab\u7684\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-1%ef%bc%9a%e5%ae%9a%e7%be%a9%e5%af%a6%e9%ab%94%e9%a1%9e-MHpHsbqQXJ\">\u6b65\u9a5f 1\uff1a\u5b9a\u7fa9\u5be6\u9ad4\u985e<\/h3>\n<pre><code>@Entity\npublic class User {\n    @PrimaryKey(autoGenerate = true)\n    public int id;\n    public String name;\n    public int age;\n}<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-2%ef%bc%9a%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e8%a8%aa%e5%95%8f%e5%b0%8d%e8%b1%a1-dao-MHpHsbqQXJ\">\u6b65\u9a5f 2\uff1a\u5275\u5efa\u6578\u64da\u8a2a\u554f\u5c0d\u8c61 (DAO)<\/h3>\n<pre><code>@Dao\npublic interface UserDao {\n    @Insert\n    void insert(User user);\n\n    @Query(\"SELECT * FROM User\")\n    List getAllUsers();\n}<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-3%ef%bc%9a%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab-MHpHsbqQXJ\">\u6b65\u9a5f 3\uff1a\u5275\u5efa\u6578\u64da\u5eab<\/h3>\n<pre><code>@Database(entities = {User.class}, version = 1)\npublic abstract class AppDatabase extends RoomDatabase {\n    public abstract UserDao userDao();\n}<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-MHpHsbqQXJ\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u5b89\u5353\u958b\u767c\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u6280\u8853\u5c0d\u65bc\u61c9\u7528\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u4f7f\u7528 SQLite\u3001Room \u9084\u662f Firebase Realtime Database\uff0c\u958b\u767c\u8005\u90fd\u61c9\u6839\u64da\u61c9\u7528\u7684\u9700\u6c42\u9078\u64c7\u6700\u5408\u9069\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u900f\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u76f8\u4fe1\u4f60\u5df2\u7d93\u5c0d\u5b89\u5353\u6578\u64da\u5eab\u7684\u4f7f\u7528\u6709\u4e86\u66f4\u6df1\u5165\u7684\u4e86\u89e3\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u4f60\u7684\u61c9\u7528\u958b\u767c\uff0cServer.HK 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