{"id":150635,"date":"2024-11-01T16:29:54","date_gmt":"2024-11-01T08:29:54","guid":{"rendered":"https:\/\/server.hk\/cnblog\/150635\/"},"modified":"2024-11-01T16:29:55","modified_gmt":"2024-11-01T08:29:55","slug":"%e5%ae%89%e5%8d%93%e7%a8%8b%e5%ba%8f%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%ef%bc%9a%e5%a6%82%e4%bd%95%e7%ae%a1%e7%90%86%e5%92%8c%e4%bd%bf%e7%94%a8%ef%bc%9f-android%e7%a8%8b%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/150635\/","title":{"rendered":"\u5b89\u5353\u7a0b\u5e8f\u7684\u6578\u64da\u5eab\u6587\u4ef6\uff1a\u5982\u4f55\u7ba1\u7406\u548c\u4f7f\u7528\uff1f (android\u7a0b\u5e8f\u6578\u64da\u5eab\u6587\u4ef6)"},"content":{"rendered":"<h1 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id=\"%e5%a6%82%e4%bd%95%e7%ae%a1%e7%90%86%e5%ae%89%e5%8d%93%e6%95%b8%e6%93%9a%e5%ba%ab-QwCVNFqfNy\">\u5982\u4f55\u7ba1\u7406\u5b89\u5353\u6578\u64da\u5eab<\/h2>\n<h3 id=\"1-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab-QwCVNFqfNy\">1. \u5275\u5efa\u6578\u64da\u5eab<\/h3>\n<p>\u5728\u5b89\u5353\u4e2d\u5275\u5efa\u6578\u64da\u5eab\u901a\u5e38\u6d89\u53ca\u5230\u4f7f\u7528SQLiteOpenHelper\u985e\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\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)\";\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=\"2-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-QwCVNFqfNy\">2. \u63d2\u5165\u6578\u64da<\/h3>\n<p>\u63d2\u5165\u6578\u64da\u53ef\u4ee5\u901a\u904eSQLiteDatabase\u7684insert\u65b9\u6cd5\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>ContentValues values = new ContentValues();\nvalues.put(\"name\", \"John Doe\");\nSQLiteDatabase db = this.getWritableDatabase();\ndb.insert(\"users\", null, values);\ndb.close();<\/code><\/pre>\n<h3 id=\"3-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-QwCVNFqfNy\">3. \u67e5\u8a62\u6578\u64da<\/h3>\n<p>\u67e5\u8a62\u6578\u64da\u53ef\u4ee5\u4f7f\u7528query\u65b9\u6cd5\uff0c\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>Cursor cursor = db.query(\"users\", null, null, null, null, null, null);\nif (cursor.moveToFirst()) {\n    do {\n        String name = cursor.getString(cursor.getColumnIndex(\"name\"));\n        \/\/ \u8655\u7406\u6578\u64da\n    } while (cursor.moveToNext());\n}\ncursor.close();<\/code><\/pre>\n<h2 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href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> 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