{"id":58383,"date":"2024-10-12T20:16:38","date_gmt":"2024-10-12T12:16:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/58383\/"},"modified":"2024-10-12T20:16:38","modified_gmt":"2024-10-12T12:16:38","slug":"android-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e6%94%be%e5%9c%a8%e5%93%aa%e8%a3%a1-%e7%9f%a5%e6%9b%89%e7%9b%ae%e9%8c%84%e7%b5%90%e6%a7%8b%e8%ae%93%e4%bd%a0%e6%9b%b4%e5%a5%bd%e5%9c%b0%e5%ad%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/58383\/","title":{"rendered":"Android \u6578\u64da\u5eab\u6587\u4ef6\u653e\u5728\u54ea\u88e1 \u77e5\u66c9\u76ee\u9304\u7d50\u69cb\u8b93\u4f60\u66f4\u597d\u5730\u5b58\u5132\u548c\u7ba1\u7406\u6578\u64da\u5eab\u6587\u4ef6 (android\u6578\u64da\u5eab\u6587\u4ef6\u653e\u5728\u54ea\u88e1)"},"content":{"rendered":"

Android \u6578\u64da\u5eab\u6587\u4ef6\u653e\u5728\u54ea\u88e1\uff1a\u77e5\u66c9\u76ee\u9304\u7d50\u69cb\u8b93\u4f60\u66f4\u597d\u5730\u5b58\u5132\u548c\u7ba1\u7406\u6578\u64da\u5eab\u6587\u4ef6<\/h1>\n

\u5728\u958b\u767c Android \u61c9\u7528\u7a0b\u5f0f\u6642\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u662f\u81f3\u95dc\u91cd\u8981\u7684\u4e00\u74b0\u3002\u4e86\u89e3 Android \u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u653e\u4f4d\u7f6e\u53ca\u5176\u76ee\u9304\u7d50\u69cb\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u5b58\u5132\u548c\u7ba1\u7406\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Android \u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u653e\u4f4d\u7f6e\u53ca\u5176\u76f8\u95dc\u7684\u76ee\u9304\u7d50\u69cb\u3002<\/p>\n

Android \u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

Android \u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u5b58\u5132\u65b9\u5f0f\uff0c\u5176\u4e2d SQLite \u6578\u64da\u5eab\u662f\u6700\u5e38\u7528\u7684\u9078\u64c7\u3002SQLite \u662f\u4e00\u500b\u8f15\u91cf\u7d1a\u7684\u95dc\u806f\u6578\u64da\u5eab\uff0c\u9069\u5408\u7528\u65bc\u79fb\u52d5\u8a2d\u5099\u3002\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e SQLite \u6578\u64da\u5eab\u4f86\u5b58\u5132\u61c9\u7528\u7a0b\u5f0f\u7684\u6578\u64da\uff0c\u4e26\u4e14\u53ef\u4ee5\u4f7f\u7528 SQL \u8a9e\u8a00\u9032\u884c\u67e5\u8a62\u548c\u64cd\u4f5c\u3002<\/p>\n

\u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u653e\u4f4d\u7f6e<\/h2>\n

\u5728 Android \u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u5eab\u6587\u4ef6\u901a\u5e38\u5b58\u653e\u5728\u61c9\u7528\u7684\u5167\u90e8\u5b58\u5132\u76ee\u9304\u4e2d\u3002\u5177\u9ad4\u8def\u5f91\u70ba\uff1a<\/p>\n

\/data\/data\/\/databases\/<\/code><\/pre>\n
\u5176\u4e2d\uff0c \u662f\u61c9\u7528\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u7684\u61c9\u7528\u5305\u540d\u70ba com.example.myapp\uff0c\u90a3\u9ebc\u6578\u64da\u5eab\u6587\u4ef6\u7684\u8def\u5f91\u5c07\u662f\uff1a<\/p>\n
\/data\/data\/com.example.myapp\/databases\/<\/code><\/pre>\n
\u76ee\u9304\u7d50\u69cb\u7684\u8a73\u7d30\u8aaa\u660e<\/h2>\n
\u5728\u4e0a\u8ff0\u8def\u5f91\u4e2d\uff0cdatabases<\/code> \u76ee\u9304\u5c07\u5305\u542b\u6240\u6709\u8207\u61c9\u7528\u76f8\u95dc\u7684\u6578\u64da\u5eab\u6587\u4ef6\u3002\u6bcf\u500b\u6578\u64da\u5eab\u6587\u4ef6\u7684\u540d\u7a31\u901a\u5e38\u662f\u4ee5 .db \u70ba\u5f8c\u7db4\u7684\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba mydatabase<\/code> \u7684\u6578\u64da\u5eab\uff0c\u5247\u5176\u6587\u4ef6\u540d\u5c07\u70ba mydatabase.db<\/code>\u3002<\/p>\n
\u5982\u4f55\u5275\u5efa\u548c\u8a2a\u554f\u6578\u64da\u5eab<\/h3>\n
\u5728 Android \u4e2d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528 SQLiteOpenHelper<\/code> \u985e\u4f86\u5275\u5efa\u548c\u7ba1\u7406\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n
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        \/\/ \u5275\u5efa\u6578\u64da\u8868\n        db.execSQL(\"CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT)\");\n    }\n\n    @Override\n    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {\n        \/\/ \u5347\u7d1a\u6578\u64da\u5eab\n        db.execSQL(\"DROP TABLE IF EXISTS users\");\n        onCreate(db);\n    }\n}\n<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u7576\u61c9\u7528\u9996\u6b21\u904b\u884c\u6642\uff0c\u6578\u64da\u5eab\u5c07\u88ab\u5275\u5efa\uff0c\u4e26\u4e14\u4e00\u500b\u540d\u70ba users<\/code> \u7684\u6578\u64da\u8868\u5c07\u88ab\u5275\u5efa\u3002<\/p>\n
\u6578\u64da\u5eab\u7684\u8b80\u53d6\u548c\u5beb\u5165<\/h3>\n
\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528 SQLiteDatabase<\/code> \u985e\u4f86\u9032\u884c\u6578\u64da\u7684\u8b80\u53d6\u548c\u5beb\u5165\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
SQLiteDatabase db = this.getWritableDatabase();\nContentValues values = new ContentValues();\nvalues.put(\"name\", \"John Doe\");\ndb.insert(\"users\", null, values);\n<\/code><\/pre>\n
\u800c\u8b80\u53d6\u6578\u64da\u5247\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n
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();\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u4e86\u89e3 Android \u6578\u64da\u5eab\u6587\u4ef6\u7684\u5b58\u653e\u4f4d\u7f6e\u53ca\u5176\u76ee\u9304\u7d50\u69cb\uff0c\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u9019\u4e0d\u50c5\u80fd\u5e6b\u52a9\u4ed6\u5011\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\uff0c\u9084\u80fd\u63d0\u9ad8\u61c9\u7528\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u6280\u8853\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3Android\u6578\u64da\u5eab\u6587\u4ef6\u7684\u76ee\u9304\u7d50\u69cb\uff0c\u5e6b\u52a9\u4f60\u66f4\u6709\u6548\u5730\u5b58\u5132\u548c\u7ba1\u7406\u6578\u64da\u5eab\u6587\u4ef6\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\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-58383","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58383","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=58383"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58383\/revisions"}],"predecessor-version":[{"id":58384,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/58383\/revisions\/58384"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=58383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=58383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=58383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}