{"id":58411,"date":"2024-10-12T20:28:15","date_gmt":"2024-10-12T12:28:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/58411\/"},"modified":"2024-10-12T20:28:15","modified_gmt":"2024-10-12T12:28:15","slug":"android%e9%96%8b%e7%99%bc%e5%85%a5%e9%96%80%e6%95%99%e7%a8%8b%ef%bc%9a%e5%a6%82%e4%bd%95%e6%89%93%e9%96%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-android-%e6%89%93%e9%96%8b%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/58411\/","title":{"rendered":"Android\u958b\u767c\u5165\u9580\u6559\u7a0b\uff1a\u5982\u4f55\u6253\u958b\u6578\u64da\u5eab\uff1f (android \u6253\u958b\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"android%e9%96%8b%e7%99%bc%e5%85%a5%e9%96%80%e6%95%99%e7%a8%8b%ef%bc%9a%e5%a6%82%e4%bd%95%e6%89%93%e9%96%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-aIrOCbySum\">Android\u958b\u767c\u5165\u9580\u6559\u7a0b\uff1a\u5982\u4f55\u6253\u958b\u6578\u64da\u5eab\uff1f<\/h1>\n<p>\u5728Android\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002\u7121\u8ad6\u662f\u5132\u5b58\u7528\u6236\u8cc7\u6599\u3001\u61c9\u7528\u8a2d\u5b9a\uff0c\u9084\u662f\u5176\u4ed6\u9700\u8981\u6301\u4e45\u5316\u7684\u6578\u64da\uff0c\u6578\u64da\u5eab\u90fd\u80fd\u63d0\u4f9b\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728Android\u61c9\u7528\u4e2d\u6253\u958b\u548c\u4f7f\u7528\u6578\u64da\u5eab\uff0c\u7279\u5225\u662fSQLite\u6578\u64da\u5eab\uff0c\u9019\u662fAndroid\u5e73\u53f0\u4e0a\u6700\u5e38\u7528\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afsqlite%ef%bc%9f-aIrOCbySum\">\u4ec0\u9ebc\u662fSQLite\uff1f<\/h2>\n<p>SQLite\u662f\u4e00\u500b\u8f15\u91cf\u7d1a\u7684\u95dc\u806f\u578b\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u79fb\u52d5\u8a2d\u5099\u548c\u5d4c\u5165\u5f0f\u7cfb\u7d71\u3002\u5b83\u7684\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u7121\u9700\u5b89\u88dd\uff1aSQLite\u662f\u4e00\u500b\u81ea\u5305\u542b\u7684\u6578\u64da\u5eab\uff0c\u7121\u9700\u984d\u5916\u7684\u4f3a\u670d\u5668\u9032\u7a0b\u3002<\/li>\n<li>\u8f15\u91cf\u7d1a\uff1a\u5176\u6587\u4ef6\u5927\u5c0f\u5c0f\uff0c\u9069\u5408\u79fb\u52d5\u8a2d\u5099\u4f7f\u7528\u3002<\/li>\n<li>\u652f\u6301ACID\uff1aSQLite\u652f\u6301\u539f\u5b50\u6027\u3001\u4e00\u81f4\u6027\u3001\u9694\u96e2\u6027\u548c\u6301\u4e45\u6027\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8android%e4%b8%ad%e4%bd%bf%e7%94%a8sqlite%e6%95%b8%e6%93%9a%e5%ba%ab-aIrOCbySum\">\u5982\u4f55\u5728Android\u4e2d\u4f7f\u7528SQLite\u6578\u64da\u5eab<\/h2>\n<p>\u5728Android\u4e2d\u4f7f\u7528SQLite\u6578\u64da\u5eab\u7684\u904e\u7a0b\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab-aIrOCbySum\">1. \u5275\u5efa\u6578\u64da\u5eab<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u6578\u64da\u5eab\u3002\u9019\u901a\u5e38\u5728\u4e00\u500b\u7e7c\u627f\u81eaSQLiteOpenHelper\u7684\u985e\u4e2d\u9032\u884c\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, 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}\n<\/code><\/pre>\n<h3 id=\"2-%e6%89%93%e9%96%8b%e6%95%b8%e6%93%9a%e5%ba%ab-aIrOCbySum\">2. \u6253\u958b\u6578\u64da\u5eab<\/h3>\n<p>\u5275\u5efa\u6578\u64da\u5eab\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u65b9\u5f0f\u6253\u958b\u5b83\uff1a<\/p>\n<pre><code>MyDatabaseHelper dbHelper = new MyDatabaseHelper(context);\nSQLiteDatabase db = dbHelper.getWritableDatabase(); \/\/ \u7372\u53d6\u53ef\u5beb\u6578\u64da\u5eab\n<\/code><\/pre>\n<h3 id=\"3-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-aIrOCbySum\">3. \u63d2\u5165\u6578\u64da<\/h3>\n<p>\u6253\u958b\u6578\u64da\u5eab\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u63d2\u5165\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>ContentValues values = new ContentValues();\nvalues.put(\"name\", \"John Doe\");\nvalues.put(\"age\", 30);\nlong newRowId = db.insert(\"users\", null, values);\n<\/code><\/pre>\n<h3 id=\"4-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-aIrOCbySum\">4. \u67e5\u8a62\u6578\u64da<\/h3>\n<p>\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u67e5\u8a62\u6578\u64da\uff1a<\/p>\n<pre><code>Cursor cursor = db.query(\"users\", null, null, null, null, null, null);\nwhile (cursor.moveToNext()) {\n    int id = cursor.getInt(cursor.getColumnIndex(\"id\"));\n    String name = cursor.getString(cursor.getColumnIndex(\"name\"));\n    int age = cursor.getInt(cursor.getColumnIndex(\"age\"));\n    \/\/ \u8655\u7406\u6578\u64da\n}\ncursor.close();\n<\/code><\/pre>\n<h3 id=\"5-%e6%9b%b4%e6%96%b0%e5%92%8c%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-aIrOCbySum\">5. \u66f4\u65b0\u548c\u522a\u9664\u6578\u64da<\/h3>\n<p>\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u7684\u904e\u7a0b\u4e5f\u76f8\u5c0d\u7c21\u55ae\uff1a<\/p>\n<pre><code>\/\/ \u66f4\u65b0\u6578\u64da\nContentValues updateValues = new ContentValues();\nupdateValues.put(\"age\", 31);\ndb.update(\"users\", updateValues, \"name = ?\", new String[]{\"John Doe\"});\n\n\/\/ \u522a\u9664\u6578\u64da\ndb.delete(\"users\", \"name = ?\", new String[]{\"John Doe\"});\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-aIrOCbySum\">\u7e3d\u7d50<\/h2>\n<p>\u5728Android\u958b\u767c\u4e2d\uff0c\u4f7f\u7528SQLite\u6578\u64da\u5eab\u662f\u4e00\u500b\u975e\u5e38\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u7ba1\u7406\u61c9\u7528\u4e2d\u7684\u6578\u64da\u3002\u901a\u904e\u5275\u5efa\u6578\u64da\u5eab\u3001\u6253\u958b\u6578\u64da\u5eab\u3001\u63d2\u5165\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5be6\u73fe\u6578\u64da\u7684\u6301\u4e45\u5316\u5b58\u5132\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u638c\u63e1SQLite\u7684\u4f7f\u7528\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u90e8\u7f72\u60a8\u7684Android\u61c9\u7528\u6216\u5176\u4ed6\u670d\u52d9\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728Android\u958b\u767c\u4e2d\u6253\u958b\u6578\u64da\u5eab\uff0c\u638c\u63e1\u57fa\u672c\u64cd\u4f5c\u548c\u6280\u5de7\uff0c\u8f15\u9b06\u7ba1\u7406\u61c9\u7528\u6578\u64da\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-58411","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58411","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=58411"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58411\/revisions"}],"predecessor-version":[{"id":58412,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58411\/revisions\/58412"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=58411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=58411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=58411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}