Ninepatchdrawable ninepatch patch this constructor was deprecated in api level 4. As far as i know, this type of image can help the developers to reduce apk size from assets side. Android provides a tool to draw the ninepatch bitmap. Here i am sharing my experience of working with drawable resources in android, through this article you will learn to use bitmap and ninepatch drawable resources which is the first two of ten resources available in android. Create drawable from raw ninepatch data, setting initial target density based on the display metrics of the resources. A 9patch image file is a specially formatted file so that android knows which areasportions of the image can or cannot be scaled. The draw 9patch tool is a wysiwyg editor included in android studio that allows you to create bitmap images that automatically resize to.
Create a drawable projection from a bitmap to nine patches. For more information about how to use a ninepatchdrawable, read the canvas and drawables developer guide. Locate the sdk folder and you can find the application in toolsdraw9patch. Nine patch 9patch images are normal images with an additional 1 pixel border. Working with ninepatch stretchable graphics in android. Ninepatchdrawable showing top 20 results out of 315 add the codota plugin to your ide and get smart completions. Create resizable 9 patch images android studio tutorial. Android 1x1 size ninepatch image not showing up on emulator device oct 29, 2010. Sample that shows applying tinting and color filters to drawables both programmatically and as drawable resources in xml.
This article will show you how to use the android studio nine patch tool to create and use the nine patch image. A ninepatchdrawable graphic is a stretchable bitmap image, which. A simple guide to 9patch for android ui radley marx. This is typically used for customizing the view graphics that are displayed within a. I cant find a way to create and display these ninepatch images that have been retrieved over the network. Ninepatch graphics are an indispensable tool for android developers looking. Selected parts of the image are scaled horizontally or vertically. The android sdk provides a nifty tool for creating and testing ninepatch drawables. So the image can be used in different size android devices such as mobile phone, android pad etc. The most important advantage over png is that nine patch images can specify noncontiguous areas to scale. Android 9 patch image files for buttons and borders tek eye.
A button consists of text or an icon or both text and an icon that communicates what action occurs when the user touches it. Why does sdktoolsdraw9patch make it possible to modify the top and bottom areas independently. Whilst a colour can be any size shape, as can a vector drawable, a bitmap drawable cannot. Tinting is set on a ninepatch drawable through the tint and tintmode parameters. One of androids most wellknown points to consider in application development is the requirement to support a variety of different screen sizes and orientations in an application. Create resizable bitmaps 9patch files android developers. Id like to use a 1x1 size ninepatch image from android drawable resources. Same as with a normal bitmap, you can reference a ninepatch file directly or from a resource defined by xml.
A ninepatchdrawable graphic is a stretchable bitmap image that you can use as the background of a view. Navigate to your installed android sdk directory at androidsdktools and run the draw9patch. Nine patchdrawable android 1 6 sdk android developer blog. Essentially, it allows the creation of custom graphics that will scale the way that you define, when content added within the image exceeds the normal bounds of the graphic. Below is basic guide map i got from a simple guide to 9patch for android ui. Following is a list of components of android application architecture. Autostretch trim edge transparency trim stretch region. Creating a 9patch image background in android studio youtube. Drawables are used to define shapes, colors, borders, gradients, etc.
Drag the png file into the lefthand pane or use file open ninepatch click the show patches checkbox at. The questions asked by interviewers in android is given below. The corners remain unscaled, the sides are scaled in one direction and the center is. I have a requirement on my android application that parts on the graphics should be customizable, by retrieving new colors and images from the server side. A list of top android interview questions and answers. Ninepatchbitmap bitmap, byte chunk, string srcname. Nine patch image is an android special image format which can make the background image scaled correctly. To create a ninepatchdrawable object from a ninepatch drawable resource.
June, 2010 by dave android in 9patch, android, drawable 9patches explained. For a thorough explanation of a ninepatch image, read the discussion in the 2d graphics document. Nine patch files are not restricted to simple view. Android is an opensource, linuxbased operating system used in mobiles, tablets, televisions, etc. Using this image, we can reduce the asset size but still get good quality of buttons. If 9 patch images must have a one pixel stretchable area for regions 2, 4, 6, 8 counting the areas in reading order, how can 9 patch images capture an image such as the one below, where the corners are 4x4, and each of the stretchable areas is 4pixels wide part 2.
Android uses nine patch files to provide support for scaling of backgrounds as view sizes change. The ninepatch class permits drawing a bitmap in nine or more sections. Depending on whether you want a button with text, an icon, or both, you can create the button in your layout in three ways. By continuing to browse this site, you agree to this use. I dont know if thats the problem but i hope it helps. A ninepatch drawable is a standard png image that includes an extra 1pixelwide border. A drawable resource is a general concept for a graphic that can be drawn to the screen. An example use of a ninepatch is the backgrounds used by standard android buttons buttons must stretch to accommodate strings of various lengths. When im trying to display it with in my layout xml file, this one is never showing up on the android emulator device. A drawable resource is a general concept for a graphic that can be drawn to the screen and which you can retrieve with apis such as getdrawableint or apply to another xml resource with attributes such as android. I created a 9patch image in android studio and copied it to my android project in vs however i get this error. An example use of a ninepatch image is the background used by androids standard button widget, which must stretch to accommodate the text or image inside the button. Notice that the new view background is using a little less space than the default useful to know if a project needs a little bit more screen area. How to use 9patch images for resizable backgrounds in android.
For information about creating a ninepatch image file using the draw9patch tool, see the draw 9patch tool guide. A resizeable bitmap, with stretchable areas that you define. There are various tools to generate 9patch, one of which is provided in the sdk itself. Create resizable 9 patch images android studio tutorial youtube. A ninepatch drawable is a stretchable bitmap image, which android will automatically resize to accommodate the contents of the view in which you have placed it as the background, e. Selected parts of the image are scaled horizontally or vertically based on indicators drawn within the image. Portions of this page are modifications based on work created and shared by the android open source project and used according to terms described in the creative commons 2.
Normally, the middle is transparent so that the patch can provide a selection about a rectangle. The ninepatch class permits drawing a bitmap in nine sections. This site uses cookies for analytics, personalized content and ads. Why does sdk toolsdraw9patch make it possible to modify the top and bottom areas independently. To answer the first part of your question, the sdk and now android studio ships with draw 9patch draw9patch in the sdk tools folder which is a simple editor. For more information about how to use a ninepatchdrawable, read the canvas and drawables.