\n The latest open-source SDK code and sample app are available on GitHub in the surface-duo-sdk<\/a> repo in inksdk<\/strong>. This post discusses the changes in this release.\n<\/p>\n \n Microsoft Surface Duo can detect when the pen tip is near to the screen. The InkView<\/strong> now detects when the pen is close and shows visual feedback that reflects the ink color and pen size. If you flip the pen around to use the eraser, the indicator becomes a dotted grey circle.\n<\/p>\n \n Another area we were able to improve is the appearance of the lines. Drawings, including using a custom pen implementation, look much smoother in this release. This is visible in Figure 1.\n<\/p>\n \n We also received feedback about supporting older versions of Android, and that developers would prefer a smaller package size. Both of these have been addressed in this release:\n<\/p>\n \n The SDK remains extensible by implementing DynamicPaintHandler as discussed in a previous post<\/a>.\n<\/p>\n \n In addition to trying the included sample app, you can also incorporate the InkView<\/strong> into your test projects by getting the latest version from Maven Central<\/a>:\n<\/p>\n Ensure your build.gradle<\/strong> file contains a reference to:<\/p>\n Add the dependency:<\/p>\n Add a custom namespace to the root XML element:<\/p>\n Place an InkView<\/strong> control in your view:<\/p>\n \n Note that InkView<\/strong> is transparent, so make sure to host it in a view with an appropriate background color.\n<\/p>\n \n The source code for InkView is\u00a0available on GitHub<\/a>; we\u2019d love to hear your feedback or see contributions from you to the project.\n<\/p>\n \n Check out the\u00a0Surface Duo developer documentation<\/a>\u00a0and\u00a0past blog posts<\/a>\u00a0for links and details on all our samples. You can also find them summarized in the\u00a0Microsoft Samples Browser<\/a>, or explore on\u00a0GitHub<\/a>.\n<\/p>\n \n If you have any questions, or would like to tell us about your apps, use the\u00a0feedback forum<\/a>\u00a0or message us on Twitter\u00a0@surfaceduodev<\/a>.\n<\/p>\n \n Finally, please join us for the\u00a0dual screen developer Twitch livestream<\/a>\u00a0at 11am (Pacific time) each Friday \u2013 mark it in your calendar and check out the\u00a0archives on YouTube<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" Hello Android developers, This week we\u2019re releasing the alpha4 version of our pen SDK preview. The pen SDK is intended to help developers add drawing capabilities to their Android apps, accepting input using touch or pen (including pen features like the eraser tip). The latest open-source SDK code and sample app are available on GitHub […]<\/p>\n","protected":false},"author":23662,"featured_media":1702,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[473,366,45],"class_list":["post-1694","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-surface-duo-sdk","tag-kotlin","tag-pen","tag-surface-duo-sdk"],"acf":[],"blog_post_summary":" Hello Android developers, This week we\u2019re releasing the alpha4 version of our pen SDK preview. The pen SDK is intended to help developers add drawing capabilities to their Android apps, accepting input using touch or pen (including pen features like the eraser tip). The latest open-source SDK code and sample app are available on GitHub […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/posts\/1694","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/users\/23662"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/comments?post=1694"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/posts\/1694\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/media\/1702"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/media?parent=1694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/categories?post=1694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-json\/wp\/v2\/tags?post=1694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}New pen-hover indicator<\/h2>\n
![\"Surface](\"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-content\/uploads\/sites\/53\/2021\/07\/graphical-user-interface-application-description-193x300.png\")
<\/a> ![\"Surface](\"https:\/\/devblogs.microsoft.com\/surface-duo\/wp-content\/uploads\/sites\/53\/2021\/07\/word-image-194x300.png\")
<\/a>Smoother lines<\/h2>\n
Other changes<\/h2>\n
\n
Try it out<\/h2>\n
\n
mavenCentral()<\/pre>\n<\/li>\n
implementation 'com.microsoft.device:ink:1.0.0-alpha4'<\/pre>\n<\/li>\n
xmlns:InkView=\"http:\/\/schemas.android.com\/apk\/res-auto\"<\/pre>\n<\/li>\n
<com.microsoft.device.ink.InkView\r\n android:id=\"@+id\/inkView\"\r\n android:layout_width=\"match_parent\"\r\n android:layout_height=\"match_parent\"\r\n InkView:enable_pressure=\"true\"\r\n InkView:ink_color=\"@color\/black\"\r\n InkView:max_stroke_width=\"25\"\r\n InkView:min_stroke_width=\"10\" \/>\r\n<\/pre>\n<\/li>\n<\/ol>\n
Resources and feedback<\/h2>\n