{"id":4329,"date":"2018-07-26T19:45:31","date_gmt":"2018-07-26T11:45:31","guid":{"rendered":"http:\/\/www.bookcard.net\/wordpress\/?p=4329"},"modified":"2018-10-14T21:28:23","modified_gmt":"2018-10-14T13:28:23","slug":"android_game_bitmap_read","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/android_game_bitmap_read\/","title":{"rendered":"Android\u904a\u6232\u4e4bBitmap\u8b80\u53d6"},"content":{"rendered":"<figure id=\"attachment_4330\" aria-describedby=\"caption-attachment-4330\" style=\"width: 1200px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2018\/07\/Android_Game_Bitmap_Read.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4330\" src=\"https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2018\/07\/Android_Game_Bitmap_Read.jpg\" alt=\"\" width=\"1200\" height=\"800\" srcset=\"https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2018\/07\/Android_Game_Bitmap_Read.jpg 1200w, https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2018\/07\/Android_Game_Bitmap_Read-300x200.jpg 300w, https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2018\/07\/Android_Game_Bitmap_Read-768x512.jpg 768w, https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2018\/07\/Android_Game_Bitmap_Read-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><figcaption id=\"caption-attachment-4330\" class=\"wp-caption-text\">Android\u904a\u6232\u4e4bBitmap\u8b80\u53d6<\/figcaption><\/figure>\n<p>\u904a\u6232\u7531\u300e\u80cc\u666f\u300f\u8207\u300e\u89d2\u8272\u300f\u300e\u690d\u7269\u300f\u300e\u623f\u820d\u300f\u7b49\u5716\u6a94\u7d44\u6210.\u5728C\u6642\u4ee3\u8981\u9010\u500b\u5beb\u5716\u6a94\u5206\u6790\u5668.\u800c\u5728java\u53ef\u4ee5\u901a\u904eBitmapFactory\u8b80\u53d6Bitmap\u300e\u4f4d\u5716\u300f.\u5e7e\u4e4e\u652f\u6301\u6240\u6709\u5e38\u898b\u5716\u6a94\u300ejpg\u300f\u300epng\u300f\u300ebmp\u300f\u300epng\u300f.\u628a\u6240\u6709\u300e\u4f4d\u5716\u300f\u4fdd\u5b58\u5230\u300e<a href=\"https:\/\/www.bookcard.net\/wordpress\/android_game_file_read_write\/\">ASSETS<\/a>\u300f\u76ee\u9304\u4e0b<\/p>\n<p>\u8cc7\u6e90\u7ba1\u7406\u5668\u7528\u65bc\u8a2a\u554f\u300e<a href=\"https:\/\/www.bookcard.net\/wordpress\/android_game_file_read_write\/\">ASSETS<\/a>\u300f\u76ee\u9304<\/p>\n<p>AssetManager asset_manager = context.getAssets();<\/p>\n<p>\u6307\u5b9a\u300e\u4f4d\u5716\u540d\u300f\u4e26\u8fd4\u56de\u8f38\u5165\u6d41<\/p>\n<p>InputStream input_stream = asset_manager.open(file_name);<\/p>\n<p>\u8b80\u53d6Bitmap\u9ed8\u8a8d\u8f49\u63db\u70baRGB_565\u8272<\/p>\n<p>Bitmap bitamp = BitmapFactory.decodeStream(input_stream);<\/p>\n<p>\u95dc\u9589\u8f38\u5165\u6d41<\/p>\n<p>Input_Stream.close();<\/p>\n<p>\u7372\u53d6\u4f4d\u5716\u5bec\u5ea6<\/p>\n<p>int width = bitmap.getWidth();<\/p>\n<p>\u8b80\u53d6\u4f4d\u5716\u5bec\u5ea6<\/p>\n<p>int height = bitmap.getHeight();<\/p>\n<p>\u7372\u53d6\u4f4d\u5716\u984f\u8272\u683c\u5f0f.<\/p>\n<p>Bitmap.Config config = bitamp.getConfig();<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"277\">Bitmap.Config<\/td>\n<td width=\"277\">\u4f4d\u5716\u984f\u8272\u683c\u5f0f<\/td>\n<\/tr>\n<tr>\n<td width=\"277\">ALPHA_8<\/td>\n<td width=\"277\">256\u8272<\/td>\n<\/tr>\n<tr>\n<td width=\"277\">ARGB_8888<\/td>\n<td width=\"277\">32bit\u542bALPHA\u5206\u91cf<\/td>\n<\/tr>\n<tr>\n<td width=\"277\">RGB_565<\/td>\n<td width=\"277\">16bit(\u9ed8\u8a8d)<\/td>\n<\/tr>\n<tr>\n<td width=\"277\">ARGB_4444<\/td>\n<td width=\"277\">16bit\u542b\u900f\u660e\u5ea6\u5206\u91cf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4ee5\u7279\u5b9a\u984f\u8272\u683c\u5f0f\u9032\u884c\u8b80\u53d6.\u4f46\u6e32\u67d3\u6642\u6700\u7d42\u8981\u8207OpenGL ES\u984f\u8272\u683c\u5f0f\u4e00\u81f4<\/p>\n<p>\u8a2d\u5b9a\u984f\u8272\u683c\u5f0f\u70baARGB_8888<\/p>\n<p>BitmapFactory.Options options = new BitmapFactory.Options();<\/p>\n<p>options.inPreferredConfig = Bitmap.Config.ARGB_8888;<\/p>\n<p>\u6307\u5b9a\u300e\u4f4d\u5716\u540d\u300f\u4e26\u8fd4\u56de\u8f38\u5165\u6d41<\/p>\n<p>InputStream Input_Stream = asset_manager.open(file_name);<\/p>\n<p>\u8b80\u53d6Bitmap\u4e26\u8f49\u63db\u70baARGB_8888\u8272<\/p>\n<p>Bitmap bitamp = BitmapFactory.decodeStream(Input_Stream, null, options);<\/p>\n<p>\u95dc\u9589\u8f38\u5165\u6d41<\/p>\n<p>Input_Stream.close();<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u904a\u6232\u7531\u300e\u80cc\u666f\u300f\u8207\u300e\u89d2\u8272\u300f\u300e\u690d\u7269\u300f\u300e\u623f\u820d\u300f\u7b49\u5716\u6a94\u7d44\u6210.\u5728C\u6642\u4ee3\u8981\u9010\u500b\u5beb\u5716\u6a94\u5206\u6790\u5668.\u800c\u5728java\u53ef\u4ee5\u901a\u904eBitma &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.bookcard.net\/wordpress\/android_game_bitmap_read\/\" class=\"more-link\">\u7e7c\u7e8c\u95b1\u8b80 <span class=\"screen-reader-text\">Android\u904a\u6232\u4e4bBitmap\u8b80\u53d6<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,62],"tags":[2,50],"class_list":["post-4329","post","type-post","status-publish","format-standard","hentry","category-android","category-opengl","tag-android","tag-opengl","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/4329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=4329"}],"version-history":[{"count":2,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/4329\/revisions"}],"predecessor-version":[{"id":4336,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/4329\/revisions\/4336"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=4329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=4329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=4329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}