{"id":150855,"date":"2024-11-01T16:47:20","date_gmt":"2024-11-01T08:47:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/150855\/"},"modified":"2024-11-01T16:47:21","modified_gmt":"2024-11-01T08:47:21","slug":"%e5%ae%89%e5%8d%93%e6%87%89%e7%94%a8%e5%a6%82%e4%bd%95%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e5%9c%96%e7%89%87%e8%b7%af%e5%be%91%ef%bc%9f-%e5%ae%89%e5%8d%93%e8%ae%80%e5%8f%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/150855\/","title":{"rendered":"\u5b89\u5353\u61c9\u7528\u5982\u4f55\u8b80\u53d6\u6578\u64da\u5eab\u4e2d\u7684\u5716\u7247\u8def\u5f91\uff1f (\u5b89\u5353\u8b80\u53d6\u6578\u64da\u5eab\u4e2d\u7684\u5716\u7247\u8def\u5f91)"},"content":{"rendered":"<h1 id=\"%e5%ae%89%e5%8d%93%e6%87%89%e7%94%a8%e5%a6%82%e4%bd%95%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e5%9c%96%e7%89%87%e8%b7%af%e5%be%91%ef%bc%9f-EISlmlVGnb\">\u5b89\u5353\u61c9\u7528\u5982\u4f55\u8b80\u53d6\u6578\u64da\u5eab\u4e2d\u7684\u5716\u7247\u8def\u5f91\uff1f<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u79fb\u52d5\u61c9\u7528\u958b\u767c\u4e2d\uff0c\u5716\u7247\u7684\u7ba1\u7406\u8207\u986f\u793a\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002\u7279\u5225\u662f\u5728\u5b89\u5353\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u7d93\u5e38\u9700\u8981\u5f9e\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u5716\u7247\u7684\u8def\u5f91\uff0c\u4ee5\u4fbf\u5728\u61c9\u7528\u4e2d\u986f\u793a\u9019\u4e9b\u5716\u7247\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u5b89\u5353\u61c9\u7528\u4e2d\u8b80\u53d6\u6578\u64da\u5eab\u4e2d\u7684\u5716\u7247\u8def\u5f91\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88-EISlmlVGnb\">\u6578\u64da\u5eab\u8a2d\u8a08<\/h2>\n<p>\u9996\u5148\uff0c\u70ba\u4e86\u80fd\u5920\u5b58\u5132\u5716\u7247\u7684\u8def\u5f91\uff0c\u6211\u5011\u9700\u8981\u8a2d\u8a08\u4e00\u500b\u5408\u9069\u7684\u6578\u64da\u5eab\u7d50\u69cb\u3002\u901a\u5e38\uff0c\u6211\u5011\u6703\u4f7f\u7528 SQLite \u6578\u64da\u5eab\u4f86\u5b58\u5132\u61c9\u7528\u7684\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6578\u64da\u8868\u8a2d\u8a08\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE images (\n    id INTEGER PRIMARY KEY AUTOINCREMENT,\n    image_path TEXT NOT NULL\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u8868\u4e2d\uff0c\u6211\u5011\u6709\u4e00\u500b\u81ea\u589e\u7684\u4e3b\u9375 id \u548c\u4e00\u500b\u7528\u65bc\u5b58\u5132\u5716\u7247\u8def\u5f91\u7684 image_path \u6b04\u4f4d\u3002<\/p>\n<h2 id=\"%e6%8f%92%e5%85%a5%e5%9c%96%e7%89%87%e8%b7%af%e5%be%91-EISlmlVGnb\">\u63d2\u5165\u5716\u7247\u8def\u5f91<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u63d2\u5165\u5716\u7247\u8def\u5f91\u7684\u904e\u7a0b\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>public void insertImagePath(String path) {\n    SQLiteDatabase db = this.getWritableDatabase();\n    ContentValues values = new ContentValues();\n    values.put(\"image_path\", path);\n    db.insert(\"images\", null, values);\n    db.close();\n}<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u4f7f\u7528\u4e86 SQLite \u7684 API \u4f86\u63d2\u5165\u5716\u7247\u8def\u5f91\u3002\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u5728\u63d2\u5165\u4e4b\u524d\uff0c\u5716\u7247\u8def\u5f91\u5df2\u7d93\u5b58\u5728\u65bc\u8a2d\u5099\u7684\u5b58\u5132\u4e2d\u3002<\/p>\n<h2 id=\"%e8%ae%80%e5%8f%96%e5%9c%96%e7%89%87%e8%b7%af%e5%be%91-EISlmlVGnb\">\u8b80\u53d6\u5716\u7247\u8def\u5f91<\/h2>\n<p>\u7576\u6211\u5011\u9700\u8981\u5f9e\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u5716\u7247\u8def\u5f91\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>public List getImagePaths() {\n    List imagePaths = new ArrayList();\n    SQLiteDatabase db = this.getReadableDatabase();\n    Cursor cursor = db.rawQuery(\"SELECT image_path FROM images\", null);\n    \n    if (cursor.moveToFirst()) {\n        do {\n            imagePaths.add(cursor.getString(0));\n        } while (cursor.moveToNext());\n    }\n    cursor.close();\n    db.close();\n    return imagePaths;\n}<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u6703\u5f9e images 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}\n}<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u4f7f\u7528 BitmapFactory \u4f86\u5f9e\u6587\u4ef6\u8def\u5f91\u4e2d\u52a0\u8f09\u5716\u7247\uff0c\u4e26\u5c07\u5176\u8a2d\u7f6e\u5230 ImageView \u4e2d\u3002\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u8981\u8abf\u6574\u4f48\u5c40\u548c\u986f\u793a\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EISlmlVGnb\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u5b89\u5353\u61c9\u7528\u4e2d\u8b80\u53d6\u6578\u64da\u5eab\u4e2d\u7684\u5716\u7247\u8def\u5f91\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u5230\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u3001\u6578\u64da\u7684\u63d2\u5165\u8207\u67e5\u8a62\uff0c\u4ee5\u53ca\u5716\u7247\u7684\u986f\u793a\u3002\u901a\u904e\u4f7f\u7528 SQLite 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