Working with ninepatch stretchable graphics in android. Type a file name for your ninepatch image, and click ok. This app helps to manipulate graphical resources for android apps and themes. Hey everyone, i am trying to use nine patch image as background for notification activity. Android 9 patch image files for buttons and borders tek eye. The draw 9 patch tool offers an extremely handy way to create your ninepatch images, using a wysiwyg graphics editor. 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. This tutorial will walk you through the 9 patch editor, and provide a few tips for converting your own pngs.
The android sdk offers a built it draw 9 patch tool. The padding lines are the lines on the right and at the bottom. The below image illustrates an example of a 9 patch image to be used as android splash screen. Introduction to 9 patch png editor android studios built in 9 patch editor can be intimidating at first glance, but its actually very, very simple. A simple guide to 9patch for android ui while i was working on my first android app, i found 9 patch aka 9. Nine patch 9 patch images are normal images with an additional 1 pixel border. Below is basic guide map i got from a simple guide to 9patch for android ui. A ninepatch drawable is a standard png image that includes an extra 1pixelwide border. You can use 9 patch images in the splash screens of. Android devices come in different screen sizes and density, often making it very difficult for android app maker to design an application for all screen sizes. As far as i know, this type of image can help the developers to reduce apk size from assets side.
Use of nine patch images can be very helpful for them. An example use of a nine patch image is the background used by android s standard button widget, which must stretch to accommodate the text or image inside the button. Nine patch bitmaps are another, very useful way of customizing the appearance of android views. Nine patch image is a bitmap which stretches to fit the content posted in the view where it is applied as a background. In this android tutorial, we will see about how to create an android bubble layout for a chat application. The use of 9 patch images for android development is to help keep the app lower in the size.
The draw 9patch tool allows you to easily create a ninepatch graphic using a wysiwyg editor. It even raises warnings if the region youve defined for the stretchable area is at risk of producing drawing artifacts as a result of the pixel replication. The images can be sliced up into even smaller pieces. Mostly nine patch images are used as background for buttons, texts, frames. Adding 9 patch images to your android splash screen. However, im having trouble getting this to work for android using a 9 patch image, but it looks like the image is being scaled normally, not respecting the guides i have in the image. Nice tutorial thanks a lot,but im little confuse about 9 patch image. In this video we will learn, how to create resizable 9patch png images in android studio, which dont look stretched or distorted when changing their size. An example use of a nine patch image is the background. A 9 patch is a special kind of png image, the android operating system reads the borders of these images to understand how to stretch the image itself and the content within the image such as text imagine setting a background image with text over top, this is a very common use. Navigate to the folder where you installed the sdk. This article will show you how to use the android studio nine patch tool to create and use the nine patch image. These are referred to as nine patch graphics, since they have nine distinct regions.
Included as part of the android sdk is a draw 9 patch utility. Android determines if an image is scaled using nine patch scaling instead of uniform scaling via the file name, it must have. Autostretch trim edge transparency trim stretch region. In android studio, rightclick the png image youd like to create a ninepatch image from, then click create 9 patch file. Heres a quick guide to create a nine patch graphic using the draw 9patch tool. Png by xenio2000 xda developers was founded by developers, for developers. A ninepatch drawable graphic 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. Nine patch 9patch images are normal images with an additional 1 pixel border. Chat bubbles are background image that expands horizontally and vertically as required based on the message posted.
Nine patch generator for android an online tool to. Android tutorial for beginners 101 create 9 patch images. The android sdk lets you use bitmap graphics that have stretchable and fixed regions. The official documentation linked to in the other answers is ok i suppose, but it really lacks in examples. A 9patch image file is a specially formatted file so that android knows which areasportions of the image can or cannot be scaled. Nine patch image is an android special image format which can make the background image scaled correctly. Edit stretch regions and layout margins load any image including existing. So, dont have a normal graphic drawable called android. If its already been a few times that youve used different 9 patch images, youve most certainly seen those scary red borders a few times as well. Android provide a tool for creating nine patch images. First add an png image to the android project drawable folder. Inside this folder will be the draw 9 patch program. Most of the examples talk about creating a 9 patch image, but implementation details are usually left at a high level. This additional 1 pixel border is used to define 1.
In this video we will learn, how to create resizable 9patch png images in android studio, which dont look stretched or distorted when. Android 9 patch images for custom controls pocketmagic. An example use of a ninepatch is the backgrounds used by standard android buttons buttons must stretch to accommodate strings of various lengths. We will use android listview with adapter to create the android chat bubble layout. How to use 9patch images for resizable backgrounds in android. If you do, by default, the android framework will load the normal drawable if more than one graphic images with the same name are found. A tutorial for 9 patch image files in android with example source code.
As a nine patch graphic is resized or its aspect ratio is changed, it keeps the corners intact, stretches the sides, and expands the center as needed. For further information about creating a 9 patch image, see android draw 9 patch documentation. Getting started in android development part 10 nine. With that explanation and the advent of css3 you might think that there is no reason to use 9 patch images but the name 9 patch is a misnomer. First of all, we have to generate a 9 patch image which will be shown as bubble in android chat layout. So the image can be used in different size android devices such as mobile phone, android pad etc. This article discusses the use of the 9 patch file in android and how to create them with the draw 9 patch tool provided by the android sdk. Nine patch is a stretchable bitmap image, and which android automatically resizes to accommodate the contents of the view. The draw 9patch tool is a wysiwyg editor included in android studio that allows you to create bitmap images that automatically resize to. After a little while, i finally picked up on how it works and decided to throw together something to help others figure it out. After that you will find a same name png image with.
Ninepatch graphics are simply png graphics that have patches, or regions of the image, defined to scale and stretch in the appropriate areas. Nine patch images allow optional definition of the padding lines in the image. Create resizable 9 patch images android studio tutorial youtube. This is a very handy tool to create simple 9 patch images. Create resizable 9 patch images android studio tutorial. How to draw ninepatch images with photoshop android. It has a slightly different approach in creating the 9patch images. Simplest method to generate 9 patch image is to use android asset studio simple nine patch generator. Ninepatch a ninepatchdrawable graphic 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.
A simple guide to 9patch for android ui radley marx. Due to varied screen sizes and resolutions of android devices in the market, android has separated all of its screen sizes into distinct screen densities. What is this twisted game android studio is playing with us showing it can scale the 9 patch correctly but saying our patches are bad. The view is where you have placed the image as the background. Nicks post above with the good 9 patch tutorial that provides a working project download file, saved the day. The patched image is created using the tool draw9patch which is shipped with android sdk and is available in its tools directory. Example code is available for importing into android studio. You can imagine a scenario where a bitmap is used as a background for a textview. Android smartphones receive two major os updates at max but the lucky huawei watch 2 has already received two major os updates in shape of android 7. Working with 9patch nine patch images in android knowledge. The corners remain unscaled, the sides are scaled in one direction and the center is scaled in both dimensions. Create resizable bitmaps 9patch files android developers. Using this image, we can reduce the asset size but still get good quality of buttons.
Ive created my 9 patch images for my android buttons and have looked for what would hardly be tutorials on how to use them in the app im using android studio btw, and i havent been able to locate any decent explanation on how to do just that. Create resizable 9 patch images android studio tutorial duration. Here i am sharing my experience of working with drawable resources in android, through this article you will learn to use bitmap and nine patch drawable resources which is the first two of ten resources available in android. A ninepatch is like any png image but contains an extra 1pixelwide border. As a solution, we can design special images, called 9 patch images, that come with predefined stretching areas that help keeping the same look. The following video demonstrate the creation of a simple android 9 patch image to use with your android projects. This site uses cookies for analytics, personalized content and ads. Hello friends, this are very simple to develop for nine patch image or button or any other in android. If a view sets the 9 patch image as its background, the padding lines are used to define the space for the views content e. In creating android chat bubbles, nine patch image plays a crucial role. The most important advantage over png is that nine patch images can specify noncontiguous areas to scale. For example, if you scale an image in photoshop it will add. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality.
Adding 9patch images to your android splash screen. You can use 9patch images in the splash screens of your android applications. So i create nine patch simple example and this example is very useful for any other things. Once you start the tool, drag the image that youd like converted in the space shown below.
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