Creating a custom CursorAdapter for Android | Bloggings of randomness
I’ve been writing a bit more Android code, and came upon the need to write a custom CursorAdapter for a ListView, as the way I wanted to display data from a Cursor was dependent on relationships between different fields of the database. Of the problems I encountered, the most obvious was when I tried to inflate views using View.inflate(), and found I would get the following error: UnsupportedOpera
CursorAdapterã®åŸºæœ¬ - Boring Days as tech
CursorAdapterã«ã¤ã„ã¦æ—¥æœ¬èªžã®è§£èª¬ãŒæ¥µç«¯ã«å°‘ãªã„ã®ã§æ›¸ã„ã¦ã¿ãŸã€‚ ã‘ã©ãªã‚“ã§å°‘ãªã„ã‚“ã ã‚ã†ã€‚。。確ã‹ã«ã‚¹ã‚´ã‚¤ä½¿ã„å‹æ‰‹ãŒè‰¯ã„訳ã§ã¯ãªã„ã‘ã©ä½•ã‹æ‚ªã„点ãŒã‚ã‚‹ã‚“ã ã‚ーã‹ã€‚。。 çµå±€å¤§é‡ã®ãƒ‡ãƒ¼ã‚¿ã‚’ç°¡å˜ã«åˆ—挙ã™ã‚‹æ–¹æ³•ã£ã¦ãã‚Œæ„外ã«ãªã„æ°—ãŒã™ã‚‹ã—ç©æ¥µçš„ã«ä½¿ã£ã¦è¨€ã£ã¦ã‚‚良ã„ã‹ã‚‚ã—ã‚Œãªã„ã¨æ€ã†ã‚“ã ã‘ã©ã€‚ CursorAdapterã£ã¦ä½• Androidã¯ã¡ã‚‡ã£ã¨å¤§å®¹é‡ã®ãƒ‡ãƒ¼ã‚¿ã‚’メモリã«ãŠãã ã‘ã§ä¸å¯é¿ãªOutOfMemoryエラーãŒç™ºç”Ÿã™ã‚‹ã€‚ ã¨ã‚‚ã™ã‚‹ã¨ListViewãªã©ã§å¤§é‡ã®ãƒ‡ãƒ¼ã‚¿ã‚’列挙をã—ãŸã„å ´åˆï¼ˆãŸã¨ãˆã°Twitterã®ã‚¿ã‚¤ãƒ ラインã¨ã‹ï¼‰ã ã¨ã€ メモリã«ä¿æŒã—ã¦ãŠã仕様ã ã¨è¡¨ç¤ºã™ã‚‹ä»¶æ•°ã«é™ç•ŒãŒå‡ºã¦ãる。列挙ã™ã‚‹ãƒ‡ãƒ¼ã‚¿ã®ä¸ã«ç”»åƒãªã©ãŒå«ã¾ã‚ŒãŸã‚‰ä½™è¨ˆã«ãã®ä»¶æ•°ã¯åœ§è¿«ã•ã‚Œã‚‹ã€‚ ã§ã€SQLiteã«ãƒ‡ãƒ¼ã‚¿ã‚’ä¿æŒã•ã›ã€ãã“ã‹ã‚‰å¿…è¦ãªã¨ãã ã‘å‹•çš„ã«ãƒ‡ãƒ¼ã‚¿ã‚’Selectã—ã€ãƒã‚¤ãƒ³ãƒ‰ã•ã›ã‚‹æ–¹æ³•ãŒã‚る。
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