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getDrawingCache ã§ View ã‚’ã‚ãƒ£ãƒ—ãƒãƒ£ãƒ¼ã›ã‚ˆï¼
ä»Šæ—¥ã¯ View ã‚’ã‚ãƒ£ãƒ—ãƒãƒ£ãƒ¼ã™ã‚‹ getDrawingCache ã®ç´¹ä»‹ã§ã™ã€‚ Android ã§ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’æ›¸ã„ã¦ã„ã‚‹ã¨è¡¨ç¤ºã—ã¦ã„ã‚‹ç”»é¢ã®ã‚µãƒ ãƒã‚¤ãƒ«è¡¨ç¤ºã‚’ã—ãŸã„å ´åˆãŒå‡ºã¦ãã¾ã™ã€‚ã“ã‚“ãªã¨ãã« getDrawingCache ãŒä½¿ãˆã¾ã™ã€‚getDrawingCache ã¯ View ã‚¯ãƒ©ã‚¹ã®ãƒ¡ã‚½ãƒƒãƒ‰ã§ã™ã®ã§ ImageView ã‚„ View ã‚’ç¶™æ‰¿ã—ã¦è‡ªå‰ã§ä½œæˆã—ãŸã‚«ã‚¹ã‚¿ãƒ Viewãªã©ã§ä½¿ç”¨ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ SDK ã® APIDemos FingerPaint ã‚’å…ƒã«ã‚µãƒ³ãƒ—ãƒ«ã‚¢ãƒ—ãƒªã‚’ä½œã‚Šã¾ã—ãŸã€‚æã„ãŸç”»åƒã‚’ãƒ•ã‚¡ã‚¤ãƒ«ã«ä¿å˜ã—ãã®ã‚µãƒ ãƒã‚¤ãƒ«ã‚’è¡¨ç¤ºã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ private void saveToFile(String filename) { try { FileOutputStream out = openFileOutput(filename, MODE_PRIV
modal_soul 2014/01/09
View

bitmap

getDrawingCache
ãƒªãƒ³ã‚¯
Androidã€€Volley ã® NetworkImageView ã§ Bitmap ã®æœ€å¤§ã‚µã‚¤ã‚ºã‚’æŒ‡å®šã™ã‚‹
Volley ã® NetworkImageView ã¯ä¾¿åˆ©ãªã®ã§ã™ãŒã€Bit map ã®ã‚µã‚¤ã‚ºã‚’æœ€é©åŒ–ã—ã¦ãã‚Œã¾ã›ã‚“ã€‚ NetworkImageView ã§ç”»åƒã®ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ã‚’é–‹å§‹ã™ã‚‹ã®ãŒ loadImageIfNecessary() ã§ã™ã€‚ https://android.googlesource.com/platform/frameworks/volley/+/master/src/com/android/volley/toolbox/NetworkImageView.java public class NetworkImageView extends ImageView { ... /** Local copy of the ImageLoader. */ private ImageLoader mImageLoader; ... public void setImageUrl(Str
modal_soul 2013/12/27
Volley

bitmap

NetworkImageView
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Androidã€€ãƒãƒƒã‚¯ã‚°ãƒ©ã‚¦ãƒ³ãƒ‰ã§ Bitmap ã‚’å‡¦ç†ã™ã‚‹
Processing Bit maps Off the UI Thread ã®å†…å®¹ã«è£œè¶³ã‚’ä»˜ã‘ã¦è§£èª¬ã—ã¦ã¾ã™ã€‚ å‰å›žã®ã‚¨ãƒ³ãƒˆãƒªãƒ¼ã§å¤§ãã„ç”»åƒã‚’åŠ¹æžœçš„ã«èªã‚€è¾¼ã‚€æ–¹æ³•ã‚’è§£èª¬ã—ã¾ã—ãŸãŒã€ãƒ‡ã‚³ãƒ¼ãƒ‰ã™ã‚‹ãƒ‡ãƒ¼ã‚¿ãŒãƒ‡ã‚£ã‚¹ã‚¯ã‚„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«ã‚ã‚‹å ´åˆã€Bit mapFactory ã® decode* ãƒ¡ã‚½ãƒƒãƒ‰ã¯ UI ã‚¹ãƒ¬ãƒƒãƒ‰ã§è¡Œã£ã¦ã¯ã„ã‘ã¾ã›ã‚“ï¼ˆã¨ã„ã†ã‹ãƒ¡ãƒ¢ãƒªä¸Šä»¥å¤–ã®ãƒ‡ãƒ¼ã‚¿ã‚’èªã¿è¾¼ã‚€å ´åˆã¯å…¨éƒ¨ã ã‚ï¼‰ã€‚ ã“ã‚Œã‚‰ã®å‡¦ç†ã¯ãƒ‡ã‚£ã‚¹ã‚¯ã‚„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ã‚¹ãƒ”ãƒ¼ãƒ‰ã€ç”»åƒã®ã‚µã‚¤ã‚ºã€CPUã®ãƒ‘ãƒ¯ãƒ¼ãªã©ã•ã¾ã–ã¾ãªè¦å› ã§å®Œäº†ã¾ã§ã®æ™‚é–“ãŒå¤‰ã‚ã‚Šã€ã„ã¤å®Œäº†ã™ã‚‹ã®ã‹ã‚ã‹ã‚Šã¾ã›ã‚“ã€‚ ã‚‚ã—ç”»åƒã®ãƒ‡ã‚³ãƒ¼ãƒ‰å‡¦ç†ã§ UI ã‚¹ãƒ¬ãƒƒãƒ‰ã‚’ãƒ–ãƒãƒƒã‚¯ã—ã¦ã—ã¾ã†ã¨ã€æœ€æ‚ª ANR ãŒç™ºç”Ÿã—ã¾ã™ã€‚ ãã“ã§ã€AsyncTask ã‚’ä½¿ã£ã¦ãƒãƒƒã‚¯ã‚°ãƒ©ãƒ³ãƒ‰ã§ Bit map ã‚’èªã¿è¾¼ã‚€ã‚ˆã†ã«ã—ã¾ã™ã€‚ â– AsyncTask ã‚’ä½¿ã† ç‰¹ã«ä½•ã‚‚è€ƒãˆãªã„ã§ä½œã‚‹ã¨ã€ãã£ã¨ã“ã‚“ãªæ„Ÿã˜
modal_soul 2013/04/15
Android

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bitmap

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Android Tips #39 LruCache ã§ Bitmap ã‚’ãƒ¡ãƒ¢ãƒªã‚ãƒ£ãƒƒã‚·ãƒ¥ã™ã‚‹ | DevelopersIO
LruCache ã¨ã¯ LruCache ã¯ã‚¢ãƒ—ãƒªä¸Šã«ãƒ¡ãƒ¢ãƒªã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚’ä½œã‚‹ãŸã‚ã®ã‚¯ãƒ©ã‚¹ã§ã™ã€‚Android 3.1 (APIãƒ¬ãƒ™ãƒ«12) ã‹ã‚‰å°Žå…¥ã•ã‚Œã¾ã—ãŸãŒ Support Package ã«äº’æ›ã‚¯ãƒ©ã‚¹ãŒã‚ã‚‹ã®ã§ Android 1.6 (APIãƒ¬ãƒ™ãƒ«4) ã‹ã‚‰ä½¿ã†ã“ã¨ãŒã§ãã¾ã™ã€‚ ä»Šå›žã¯ç”»åƒã‚’ GridView ã§è¡¨ç¤ºã™ã‚‹ã‚¢ã‚¤ãƒ†ãƒ ã‚’ãƒ¡ãƒ¢ãƒªã‚ãƒ£ãƒƒã‚·ãƒ¥ã—ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ï¼ LruCache ã®ä½¿ã„ã‹ãŸ 1. æœ€å¤§ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚µã‚¤ã‚ºã‚’æ±ºã‚ã‚‹ ã¾ãšã¯ãƒ¡ãƒ¢ãƒªã«ã‚ãƒ£ãƒƒã‚·ãƒ¥ã™ã‚‹æœ€å¤§ã‚µã‚¤ã‚ºã‚’æ±ºã‚ã¾ã™ã€‚ã“ã®æœ€å¤§ã‚µã‚¤ã‚ºã‚’ã„ãã¤ã«ã™ã‚‹ã‹ã¯å¯¾å¿œã™ã‚‹ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚„ã‚¢ãƒ—ãƒªãŒä»–ã§ä½¿ç”¨ã—ã¦ã„ã‚‹ãƒ¡ãƒ¢ãƒªé‡ã«ã‚ˆã‚‹ã®ã§ LruCache ã‚’ä½¿ç”¨ã™ã‚‹å ´é¢ã§é©åˆ‡ãªå€¤ã‚’æ±ºã‚ã‚‹ã‚ˆã†ã«ã—ã¾ã™ã€‚ä»Šå›žã¯ã‚µãƒ³ãƒ—ãƒ«ã¨ã„ã†ã“ã¨ã§ 10 MB ã¨ã—ã¾ã—ãŸã€‚ int maxSize = 10 * 1024 * 1024; 2. LruCache ã‚’
modal_soul 2013/04/10
Android

bitmap

LruCache
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ãƒªã‚½ãƒ¼ã‚¹ã‹ã‚‰Bitmapã‚’ä½œæˆ - Bitmapã‚¯ãƒ©ã‚¹ - Androidãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°å…¥é–€ | JavaDrive
ãã‚Œã§ã¯ãƒªã‚½ãƒ¼ã‚¹ã¨ã—ã¦é…ç½®ã—ãŸç”»åƒãƒ•ã‚¡ã‚¤ãƒ«ã‚’åˆ©ç”¨ã—ã¦ã€ŒBit mapã€ã‚¯ãƒ©ã‚¹ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’ä½œæˆã™ã‚‹æ–¹æ³•ã‚’ç¢ºèªã—ã¾ã™ã€‚ã€ŒBit mapFactoryã€ã‚¯ãƒ©ã‚¹ã§ç”¨æ„ã•ã‚Œã¦ã„ã‚‹staticãƒ¡ã‚½ãƒƒãƒ‰ã®ã€ŒdecodeResourceã€ãƒ¡ã‚½ãƒƒãƒ‰ã‚’ä½¿ã„ã¾ã™ã€‚ decodeResource public static Bit map decodeResource(Resources res, int id) Decode an image referenced by a resource ID. Parameters: res Resources id resource ID Returns: The resulting decoded bit map, or null. 1ç•ªç›®ã®å¼•æ•°ã«ã¯å¼•æ•°ã«ã¯ã€ŒResourcesã€ã‚¯ãƒ©ã‚¹ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’æŒ‡å®šã—ã¾ã™ã€‚ã“ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¯ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ãƒªã‚½ãƒ¼ã‚¹ã‚’ç®¡ç†ã—ã¦ã„ã‚‹ã‚‚
modal_soul 2012/05/17
Android

Layout

bitmap
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bitmapã«é–¢ã™ã‚‹modal_soulã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (5)

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Androidã€€Volley ã® NetworkImageView ã§ Bitmap ã®æœ€å¤§ã‚µã‚¤ã‚ºã‚’æŒ‡å®šã™ã‚‹

Androidã€€ãƒãƒƒã‚¯ã‚°ãƒ©ã‚¦ãƒ³ãƒ‰ã§ Bitmap ã‚’å‡¦ç†ã™ã‚‹

Android Tips #39 LruCache ã§ Bitmap ã‚’ãƒ¡ãƒ¢ãƒªã‚­ãƒ£ãƒƒã‚·ãƒ¥ã™ã‚‹ | DevelopersIO

ãƒªã‚½ãƒ¼ã‚¹ã‹ã‚‰Bitmapã‚’ä½œæˆ - Bitmapã‚¯ãƒ©ã‚¹ - Androidãƒ—ãƒ­ã‚°ãƒ©ãƒŸãƒ³ã‚°å…¥é–€ | JavaDrive

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bitmapã«é–¢ã™ã‚‹modal_soulã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (5)

getDrawingCache ã§ View ã‚’ã‚ãƒ£ãƒ—ãƒãƒ£ãƒ¼ã›ã‚ˆï¼

Androidã€€Volley ã® NetworkImageView ã§ Bitmap ã®æœ€å¤§ã‚µã‚¤ã‚ºã‚’æŒ‡å®šã™ã‚‹

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Android Tips #39 LruCache ã§ Bitmap ã‚’ãƒ¡ãƒ¢ãƒªã‚ãƒ£ãƒƒã‚·ãƒ¥ã™ã‚‹ | DevelopersIO

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