{"id":1075,"date":"2023-02-08T00:00:01","date_gmt":"2023-02-07T16:00:01","guid":{"rendered":"https:\/\/www.wxbit.com\/?p=1075"},"modified":"2024-01-10T15:20:15","modified_gmt":"2024-01-10T07:20:15","slug":"app-inventor-%e5%85%a5%e9%97%a8%ef%bc%9a%e7%bb%84%e4%bb%b6%e5%ae%bd%e9%ab%98%e7%9a%84dp%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wxbit.com\/?p=1075","title":{"rendered":"App Inventor \u5165\u95e8\uff1a\u7ec4\u4ef6\u5bbd\u9ad8\u7684dp\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"
\n

\u4f7f\u7528\u8fc7MIT\u7248\u53ca\u5176\u4ed6\u7248\u672c ai \u7684\u540c\u5b66\uff0c\u4e00\u5b9a\u770b\u5230\u7ec4\u4ef6\u5bbd\u9ad8\u7684\u5355\u4f4d\u662f\u201c\u50cf\u7d20\u201d\uff0c\u82f1\u6587\u7248\u5199\u7684\u662f\u201cpixels\u201d\u6216\u201cpx\u201d\u3002\u8fd9\u662f\u9519\u8bef\u7684\uff0c\u4e25\u91cd\u8bef\u5bfc\u521d\u5b66\u8005\uff01ai \u4f7f\u7528\u7684\u957f\u5ea6\u4e0d\u662f px \u800c\u662f dp\u3002WxBit \u7248\u7279\u610f\u5c06\u5bbd\u9ad8\u5355\u4f4d\u66f4\u6b63\u4e3a\u201cdp\u201d\uff0c\u56e0\u4e3a\u8bd1\u6587\u592a\u957f\u4e0d\u505a\u4e2d\u6587\u7ffb\u8bd1\u7684\u663e\u793a\u3002<\/span><\/span><\/p>\n

\"\"
\u7ec4\u4ef6\u7684\u5bbd\u9ad8\u8bbe\u7f6e<\/span><\/p>\n

px \u5168\u79f0\u662f\u201cPixel\u201d\uff0c\u5373\u50cf\u7d20\uff0c\u662f\u753b\u9762\u663e\u793a\u7684\u6700\u5c0f\u5355\u4f4d\u3002\u6211\u4eec\u5e38\u8bf4\u7684\u5206\u8fa8\u7387\u5c31\u662f\u4ee5 px \u4e3a\u5355\u4f4d\u3002<\/span><\/span>\u4f8b\u5982\u5c0f\u7c7310\u7684\u5c4f\u5e55\u662f6.67\u82f1\u5bf8<\/span>\uff0c<\/span>\u5206\u8fa8\u7387\u662f 2340 x 1080\u00a0\u50cf\u7d20\uff0c\u8868\u793a\u8be5\u624b\u673a\u5c4f\u5e55\u7684\u5bf9\u89d2\u7ebf\u957f\u5ea6\u4e3a6.67\u82f1\u5bf8\uff0c\u6a2a\u5411\u53ef\u4ee5\u663e\u793a 1080 \u4e2a\u50cf\u7d20\uff0c\u7eb5\u5411\u662f 2340 \u4e2a\u50cf\u7d20\u3002<\/span>\u800c\u7ea2\u7c7327\u5bf8\u663e\u793a\u5668\u7684\u5206\u8fa8\u7387\u662f 1920 x 1080\uff0c\u5c4f\u5e55\u5927\u5f88\u591a\uff0c\u4f46\u662f\u5206\u8fa8\u7387\u600e\u4e48\u8ddf\u624b\u673a\u5dee\u4e0d\u591a\u5462\uff1f<\/span>\u8fd9\u662f\u56e0\u4e3a\u624b\u673a\u7684\u5c4f\u5e55\u50cf\u7d20\u5bc6\u5ea6\uff08PPI\uff0cPixels per inch\uff09\u66f4\u9ad8\uff0c\u624b\u673a\u5c4f\u5e55 PPI \u4e3a\uff1a<\/span>sqr(2340x2340\u00a0+ 1080x1080)\u00a0\/ 6.67 = 386.4\uff0c\u663e\u793a\u5668\u5c4f\u5e55 PPI \u4e3a\uff1a<\/span>sqr(1920x1920 + 1080x1080) \/ 27 = 81.6\u3002<\/span><\/p>\n

\"\"
\n

\u5c06\u4e00\u5f20\u00a0108\u00a0x 108 px \u7684\u56fe\u7247\u5206\u522b\u653e\u5230\u8fd92\u4e2a\u5c4f\u5e55\u6309\u5b9e\u9645\u50cf\u7d20\u663e\u793a\uff0c\u56fe\u7247\u5360\u624b\u673a\u5c4f\u5e55\u5bbd\u5ea6\u7684\u00a0\u00a01\/10\uff0c\u5360\u663e\u793a\u5668\u9ad8\u5ea6\u7684 1\/10\uff0c\u770b\u8d77\u6765\u5927\u5c0f\u5dee\u522b\u4f1a\u5f88\u5927\uff0c<\/p>\n

\"\"
\n

\u5728 ai \u4e2d\u8bbe\u7f6e\u56fe\u50cf\u6846\u7684\u5c3a\u5bf8\u4e3a A\uff08\u81ea\u52a8\uff1a-1\uff09\u65f6\uff0c\u7cfb\u7edf\u5c06\u6839\u636e\u56fe\u7247\u7684\u50cf\u7d20\uff08px\uff09\u5c3a\u5bf8\u663e\u793a\uff0c\u5bfc\u81f4\u4e0d\u540c\u5bc6\u5ea6\u5c4f\u5e55\u770b\u5230\u7684\u56fe\u7247\u5927\u5c0f\u4e0d\u4e00\u6837\u3002\u5982\u679c\u6211\u4eec\u5e0c\u671b\u5728\u4e0d\u540c\u50cf\u7d20\u5bc6\u5ea6\u7684\u5c4f\u5e55\uff0c\u663e\u793a\u7684\u5927\u5c0f\u5dee\u4e0d\u591a\u8be5\u600e\u4e48\u529e\u5462\uff1f\u8fd9\u5c31\u9700\u8981\u4e00\u79cd\u4e0e\u5c4f\u5e55\u50cf\u7d20\u5bc6\u5ea6\u65e0\u5173\u7684\u957f\u5ea6\u5355\u4f4d \u2014\u2014 dp\u3002<\/span><\/span><\/p>\n

dp \u4e3a dip \u7684\u7b80\u5199\uff0c\u5168\u79f0\u662f\u00a0\u201cDensity-independent Pixel\u201d\uff0c\u7ffb\u8bd1\u8fc7\u6765\u5c31\u662f\u201c\u5bc6\u5ea6\u65e0\u5173\u7684\u50cf\u7d20\u201d\uff0c\u4e0e px \u7684\u6362\u7b97\u5173\u7cfb\uff1apx = dp * (dpi \/ 160)\u3002<\/span><\/span><\/p>\n

\u6ce8\u610f\uff0c\u8fd9\u91cc\u7684 dpi \u4e3a dots per inch\uff0c\u4e3a\u5b89\u5353\u7cfb\u7edf\u8bbe\u7f6e\u7684\u503c\uff0c\u4e0e PPI \u6ca1\u6709\u76f4\u63a5\u7684\u8054\u7cfb\uff01\u9ed8\u8ba4\u503c\u6709160\u3001240\u3001320\u3001480\u7b49\uff0c\u4e5f\u53ef\u80fd\u662f\u5176\u4ed6\u6bd4\u8f83\u63a5\u8fd1 PPI \u7684\u503c\u3002\u6bd4\u5982\u5c0f\u7c7310\uff0cPPI \u4e3a 386\uff0cdpi \u4e3a 440\u3002\u8fdb\u5165\u5f00\u53d1\u8005\u9009\u9879\uff0c\u53ef\u4ee5\u5c06 dpi \u66f4\u6539\u4e3a\u5176\u4ed6\u503c\u3002<\/span><\/span><\/p>\n

\"\"
\n

\u5bbd\u9ad8\u5c3a\u5bf8\u4e3a 100\u00a0x 100\u00a0dp \u7684\u56fe\u50cf\u6846\uff0c\u5728\u5c0f\u7c7310\u663e\u793a\u7684\u5927\u5c0f\u662f 275\u00a0x 275\u00a0px\uff0c\u56fe\u7247\u88ab\u62c9\u4f38\u653e\u5927\u3002<\/span><\/span>WxBit \u7684\u5c4f\u5e55\u7ec4\u4ef6\u63d0\u4f9b\u4e86\u201c\u5c4f\u5e55\u903b\u8f91\u5bc6\u5ea6\uff08<\/span>LogicalDensity<\/span>\uff09<\/span>\u201d\u5c5e\u6027\u5757\uff0c\u7528\u4e8e dp \u4e0e px \u7684\u6362\u7b97\u3002<\/span><\/p>\n

\"\"
\n

\u5728 px \u4e0e dp \u7684\u6362\u7b97\u516c\u5f0f\u4e2d\uff0c160 \u4e3a\u57fa\u51c6\u5c4f\u5e55\u5bc6\u5ea6\uff0c\u4e5f\u53eb mdpi\u3002\u6b64\u5916\u8fd8\u6709 ldp \u4e3a 120\uff0chdpi \u4e3a 240\uff0cxhdpi \u4e3a 320\uff0cxxhdpi \u4e3a 480 \u7b49\u9884\u5b9a\u4e49\u7684\u5bc6\u5ea6\u3002<\/span><\/p>\n

\u6709\u6ca1\u6709\u65b9\u6cd5\u5c06\u56fe\u50cf\u6846\u7684\u5bbd\u9ad8\u8bbe\u7f6e\u4e3a A\uff0c\u4e5f\u80fd\u8fbe\u5230\u8bbe\u7f6e dp \u4e00\u6837\u7684\u6548\u679c\u5462\uff1f\u8bf7\u8bb0\u4f4f\u4e0a\u9762\u9884\u5b9a\u4e49\u7684\u5c4f\u5e55\u5bc6\u5ea6\uff0c\u6211\u4eec\u5728\u4ecb\u7ecd\u56fe\u50cf\u6846\u65f6\u63ed\u6653\u3002<\/span><\/p>\n

\n<\/div>\n","protected":false},"excerpt":{"rendered":"

\u4f7f\u7528\u8fc7MIT\u7248\u53ca\u5176\u4ed6\u7248\u672c ai \u7684\u540c\u5b66\uff0c\u4e00\u5b9a\u770b\u5230\u7ec4\u4ef6\u5bbd\u9ad8\u7684\u5355\u4f4d\u662f\u201c\u50cf\u7d20\u201d\uff0c\u82f1\u6587\u7248\u5199\u7684\u662f\u201cpixels\u201d\u6216\u201cpx\u201d\u3002\u8fd9\u662f\u9519\u8bef\u7684\uff0c\u4e25\u91cd\u8bef\u5bfc\u521d\u5b66\u8005\uff01ai \u4f7f\u7528\u7684\u957f\u5ea6\u4e0d\u662f px \u800c\u662f dp\u3002WxBit \u7248\u7279\u610f\u5c06\u5bbd\u9ad8\u5355\u4f4d\u66f4\u6b63\u4e3a\u201cdp\u201d\uff0c\u56e0\u4e3a\u8bd1\u6587\u592a\u957f\u4e0d\u505a\u4e2d\u6587\u7ffb\u8bd1\u7684\u663e\u793a\u3002 … \u9605\u8bfb\u5168\u6587 <\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":1078,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-1075","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-appinventor"],"_links":{"self":[{"href":"https:\/\/www.wxbit.com\/index.php?rest_route=\/wp\/v2\/posts\/1075","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wxbit.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wxbit.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wxbit.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wxbit.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1075"}],"version-history":[{"count":1,"href":"https:\/\/www.wxbit.com\/index.php?rest_route=\/wp\/v2\/posts\/1075\/revisions"}],"predecessor-version":[{"id":1081,"href":"https:\/\/www.wxbit.com\/index.php?rest_route=\/wp\/v2\/posts\/1075\/revisions\/1081"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wxbit.com\/index.php?rest_route=\/wp\/v2\/media\/1078"}],"wp:attachment":[{"href":"https:\/\/www.wxbit.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wxbit.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wxbit.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}