{"id":1280,"date":"2020-04-17T12:33:49","date_gmt":"2020-04-17T03:33:49","guid":{"rendered":"https:\/\/ts-engine.net\/?p=1280"},"modified":"2020-04-17T12:33:49","modified_gmt":"2020-04-17T03:33:49","slug":"android%e3%81%ae%e3%83%ad%e3%83%bc%e3%82%ab%e3%83%ab%e3%82%b9%e3%83%88%e3%83%ac%e3%83%bc%e3%82%b8%e3%81%ab%e5%af%be%e3%81%99%e3%82%8bcreate-read-update%e5%87%a6%e7%90%86%e3%82%92%e3%81%be%e3%81%a8","status":"publish","type":"post","link":"http:\/\/ts-engine.net\/?p=1280","title":{"rendered":"Java\/Android\u306e\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u5bfe\u3059\u308bcreate\/read\/update\u51e6\u7406\u3092\u307e\u3068\u3081\u308b"},"content":{"rendered":"<p>\n\u30b9\u30de\u30db\u306e\u30a2\u30d7\u30ea\u3092\u4f5c\u308b\u5834\u5408\u306f\u307b\u3068\u3093\u3069Cloud\u306b\u30c7\u30fc\u30bf\u3092\u7f6e\u304f\u306e\u304c\u4e00\u822c\u7684\u3060\u304c\u3001<br \/>\nAndroid\u306e\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u30c7\u30fc\u30bf\u3092\u7f6e\u304d\u305f\u3044\u5834\u5408\u304c\u3042\u308b\u3068\u601d\u3046\u3002\n<\/p>\n<p>\n\u305d\u306e\u305f\u3081\u306e\u51e6\u7406\u3092Java\u3067\u5b9f\u88c5\u3057\u305f\u306e\u3067\u3001\u5099\u5fd8\u306e\u305f\u3081\u306b\u307e\u3068\u3081\u3066\u304a\u304f\u3002\n<\/p>\n<p><!--more--><!--more--><\/p>\n<h2>\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306e\u30d8\u30eb\u30d1\u30fc<\/h2>\n<p>[java]<br \/>\nimport android.content.Context;<br \/>\nimport android.database.sqlite.SQLiteDatabase;<br \/>\nimport android.database.sqlite.SQLiteOpenHelper;<\/p>\n<p>public class MySQLiteOpenHelper extends SQLiteOpenHelper {<br \/>\n    static final String DB_NAME = &#8220;testdb&#8221;;   \/\/ DB\u540d<br \/>\n    static final int DB_VERSION = 1;                \/\/ DB\u306eVersion<br \/>\n    static final String DB_TABLE = &#8220;testtable&#8221;;<\/p>\n<p>    public MySQLiteOpenHelper(Context context) {<br \/>\n        super(context, DB_NAME, null, DB_VERSION);<br \/>\n    }<\/p>\n<p>    @Override<br \/>\n    public void onCreate(SQLiteDatabase db) {<br \/>\n        db.execSQL(&#8220;create table if not exists &#8221; + DB_TABLE +<br \/>\n                &#8220;(id integer primary key, somenumer integer)&#8221;);<br \/>\n    }<\/p>\n<p>    @Override<br \/>\n    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {<br \/>\n        db.execSQL(&#8220;drop table if exists &#8221; + DB_TABLE);<br \/>\n        onCreate(db);<br \/>\n    }<br \/>\n}<br \/>\n[\/java]<\/p>\n<h2>\ncreate\/update\u51e6\u7406<br \/>\n<\/h2>\n<p>[java]<\/p>\n<p>    MySQLiteOpenHelper mydb = new MySQLiteOpenHelper(this);<br \/>\n    db = mydb.getWritableDatabase();<\/p>\n<p>    public void writeDB(Integer id, Integer somenumber){<br \/>\n        ContentValues values = new ContentValues();<br \/>\n        values.put(&#8220;id&#8221;,id);<br \/>\n        values.put(&#8220;somenumber&#8221;, somenumber);<\/p>\n<p>        int colNum = db.update(MySQLiteOpenHelper.DB_TABLE, values, &#8220;id = &#8221; + id, null);<br \/>\n        \/\/ update\u3055\u308c\u306a\u304b\u3063\u305f\u3089\u3002<br \/>\n        if (colNum == 0){<br \/>\n            db.insert(MySQLiteOpenHelper.DB_TABLE, &#8220;&#8221;, values);<br \/>\n        }<\/p>\n<p>    }<br \/>\n[\/java]<\/p>\n<h2>\nRead\u51e6\u7406<br \/>\n<\/h2>\n<p>[java]<br \/>\n\tpublic class Completedb {<br \/>\n    \t    public Integer id;<br \/>\n        \tpublic Integer somenumber = 0;<br \/>\n\t}<\/p>\n<p>    public Completedb readDB(Integer id) throws Exception {<br \/>\n        Completedb cdb = new Completedb();<br \/>\n        Cursor c = db.query(MySQLiteOpenHelper.DB_TABLE, new String[]{&#8220;id&#8221;, &#8220;somenumber&#8221;},<br \/>\n                &#8220;id=&#8221; + id, null, null, null, null);<br \/>\n        if (c.getCount() == 0){<br \/>\n            cdb.somenumber = -1;<br \/>\n            c.close();<br \/>\n            return cdb;<br \/>\n        }<br \/>\n        c.moveToFirst();<br \/>\n        cdb.id  = c.getInt(0);<br \/>\n        cdb.somenumber = c.getInt(1);<br \/>\n        c.close();<\/p>\n<p>        return cdb;<br \/>\n    }<br \/>\n[\/java]<\/p>\n<p>\nDelete\u306f\u3044\u307e\u3064\u304f\u3063\u3066\u3044\u308b\u30a2\u30d7\u30ea\u3067\u306f\u4f7f\u308f\u306a\u3044\u304b\u3089\u307e\u305f\u4f7f\u3046\u30bf\u30a4\u30df\u30f3\u30b0\u306b\u307e\u3068\u3081\u3088\u3046\u3068\u601d\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30b9\u30de\u30db\u306e\u30a2\u30d7\u30ea\u3092\u4f5c\u308b\u5834\u5408\u306f\u307b\u3068\u3093\u3069Cloud\u306b\u30c7\u30fc\u30bf\u3092\u7f6e\u304f\u306e\u304c\u4e00\u822c\u7684\u3060\u304c\u3001 Android\u306e\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u30c7\u30fc\u30bf\u3092\u7f6e\u304d\u305f\u3044\u5834\u5408\u304c\u3042\u308b\u3068\u601d\u3046\u3002 \u305d\u306e\u305f\u3081\u306e\u51e6\u7406\u3092Java\u3067\u5b9f\u88c5\u3057\u305f\u306e\u3067\u3001\u5099\u5fd8\u306e\u305f\u3081\u306b\u307e\u3068\u3081\u3066\u304a\u304f\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,7],"tags":[],"class_list":["post-1280","post","type-post","status-publish","format-standard","hentry","category-20","category-7"],"_links":{"self":[{"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/posts\/1280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/ts-engine.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1280"}],"version-history":[{"count":0,"href":"http:\/\/ts-engine.net\/index.php?rest_route=\/wp\/v2\/posts\/1280\/revisions"}],"wp:attachment":[{"href":"http:\/\/ts-engine.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ts-engine.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1280"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ts-engine.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}