Nine patch bitmap android emulator

Same as with a normal bitmap, you can reference a ninepatch file directly or from a resource defined by xml. Android 1x1 size ninepatch image not showing up on emulator device oct 29, 2010. You can create a 9 patch image to configure how the image can be stretched when it needs to be resized. How can i change the background of an ordinary button into some other imagenot just a color change. Selected parts of the image are scaled horizontally or vertically based on indicators drawn within the image.

The corners remain unscaled, the sides are scaled in one direction and the center is. 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. A nine patch is like any png image but contains an extra 1pixelwide border. The ninepatch class permits drawing a bitmap in nine sections. In android studio, rightclick the png image youd like to create a ninepatch image from, then click create 9 patch file. View 2 replies view related android emulator bug drawing lines on glsurfaceview aug 14, 2010. To create a 9 patch image you need to start with a. A transitiondrawable is a drawable object that can crossfade between the two drawable resources.

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. The idea is to surround a png image with a 1pixel border where you can define the stretchable areas and the padding dimensions of the image. A 9patch image file is a specially formatted file so that android knows which areasportions of the image can or cannot be scaled. Capinsetimage derives from image, and has a custom renderer for ios. You need to run the draw9patch command from your sdk sdktools directory to launch the draw 9 patch tool. So utilize our android interview questions and answers to grow in your career. Nine patch bitmaps are another, very useful way of customizing the appearance of android views. An application with out any of these is almost impossible. The emulator draws line widths very incorrectly in opengl glsurfaceview.

You can imagine a scenario where a bitmap is used as a background for a textview. A nine patch 9patch image is a bitmap that has a single pixel wide border around the entire image. The draw 9patch tool is a wysiwyg editor included in android studio that allows you to create bitmap images that automatically resize to accommodate the contents of the view and the size of the screen. From what i understand about 9patch images, i shouldnt need a custom renderer for android. As shown in figure 5, the intersection between the black lines on the left and top edge is the area of the bitmap that can be stretched. It is a resizable bitmap resource that can be used for backgrounds or other images on the device. Doubleclick your new ninepatch file to open it in android studio. Nine patch image is an android special image format which can make the background image scaled correctly.

A ninepatchdrawable graphic is a stretchable bitmap image, which android will automatically resize to accomodate the contents of the view in which you have placed it as the background. A ninepatch image, unlike bitmap, can be resized and used as background or other image sizes for the target device. Android provides a tool to draw the nine patch bitmap. An example use of a ninepatch is the backgrounds used by standard android buttons buttons must stretch to accommodate strings of various lengths. Nine patch 9patch images are normal images with an additional 1 pixel border. There are various tools to generate 9patch, one of which is provided in the sdk itself. Jpegs dont make good 9 patch images because they blur colors.

So the image can be used in different size android devices such as mobile phone, android pad etc. The draw 9patch tool is a wysiwyg editor that allows you to create bitmap images that automatically resize to accommodate the contents of the view and the size of the screen. A 9 patch image is a stretchable bitmap image with. Create resizable 9 patch images android studio tutorial. Top 50 android interview questions you must prepare in. Youll need the png image with which youd like to create a ninepatch image. Android button with a background image with text on top. What is the difference between a regular bitmap and a ninepatch image.

In android studio, rightclick the png image youd like to create a ninepatch image from, then click create 9patch file. The draw 9 patch tool is a wysiwyg editor included in android studio that allows you to create bitmap images that automatically resize to accommodate the contents of the view and the size of the screen. What is the difference between a regular bitmap and a nine. This border provides metadata for the bitmap itself. The current implementation necessitates that the reused bitmap be of the same size as the source content and in jpeg or png format whether as a resource or as a. Selected parts of the image are scaled horizontally or vertically based indicators drawn within the image. Returns the unique instance of class that represents this objects class. Different between ninepatch image vs regular bitmap image in android.

If your window or layout is resizable just plug in x and y with the width and height maybe. Ninepatch class permits drawing a bitmap in nine sections. This article will show you how to use the android studio nine patch tool to create and use the nine patch image. If the decode operation cannot use this bitmap, the decode method will return null and will throw an illegalargumentexception. Which are basic building blocks of any android application. This is what differentiates a ninepatch image from. The draw 9patch tool allows you to easily create a ninepatch graphic using a wysiwyg editor. Is there anyway to get a bitmap from this resource. Getting started in android development part 10 nine. Heres a quick guide to creating a ninepatch graphic using the draw 9patch tool in android studio. As per my experience good interviewers hardly plan to ask any particular question during your interview, normally questions start with some basic concept of the subject and later they continue based on. Dear readers, these android interview questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of android. Locate the sdk folder and you can find the application in toolsdraw9patch.

How is the ninepatch image different from a regular bitmap. By this android interview questions and answers, many students are got placed in many reputed companies with high package salary. And about nine patch bitmap, how to use them, how to create such bitmaps and how can i convert my image into a statelistdrawable, so that i can apply it as my button background. Selected parts of the image are scaled horizontally or vertically. For an introduction to ninepatch graphics and how they work, please read the section about ninepatch in the 2d graphics document. What is the difference between bitmap and drawable in android. Android custom view tutorial shapes, images and custom attributes part 1 duration.

The ninepatch refers to the way you can resize the image. When i just open and close the inputstream, everything works fine. Why is emulator important in the android environment. Type a file name for your ninepatch image, and click ok. Start with a png image, put it in any drawable folder in your project. When you save from the draw 9patch program it will have the proper extension. Ive the following code im trying to run on emulator v 1.

Tasomaniac to get my x and y for that method i am using the window or size of layout or what ever is needed for the ninepatch. Return the underlying bitmap s density, as per density. An xml file that defines a drawable that manages a number of alternate drawables. It only happens in the real phone, not in the emulator, so i dont have a logcat. If set, decode methods that take the options object will attempt to reuse this bitmap when loading content. The images can be sliced up into even smaller pieces. Now we play with 9 patch editor, go to your androidsdk home tools draw9patch. But when i uncomment one of the two methods to create a bitmap, then the app crashes after taking about 3 pictures on the fourth it gives the application stopped unexpectedly error. Failure to do so may result in unpredictable results.

Creating a 9 patch image background in android studio duration. Different between ninepatch image vs regular bitmap image. In general, a ninepatch image allows resizing that can be used as background or other image size requirements for the target device. I am working with androids 9 patch image emulator to create 9 patch image. Nine patchdrawable android 1 6 sdk android developer blog. Now drag your png image file into the window and your can. Id like to use a 1x1 size ninepatch image from android drawable resources. Creating a bitmap causes error android development. Im a webdeveloper, looking for the best experience, working between development and design. If the textview has wrap content height and width attributes, then that bitmap image will have to be stretched as longer strings or. Android interview questions and answers discussion in general, a ninepatch image allows resizing that can be used as background or other image size requirements for the target device. Bitmapdrawable now this already sounds really fishy to me because consuming a 9patch image in this fashion will result in the following error. Top 11 android interview questions and answers for 2018.