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Surfaceview components can be used to create high-efficiency drawing of two-dimensional graphs or display images, which are often in game development. In Android, the Surfaceview component is already available. When used, a custom Surfaceview is generally implemented by means of an inherited method, It can also be implemented in Mainactivity via interface Surface
First, let's take a look at the official API's introduction to Surfaceview.Surfaceview's API IntroductionProvides a dedicated drawing surface embedded inside of a view hierarchy. You can control the format of this surface and, if you like, its size; The Surfaceview takes care of placing the surface at the correctThe surface is Z, ordered so, it is behind, the window holding its surfaceview; The
1. Definition of SurfaceviewTypically, the view and user responses of a program are handled in the same thread, which is why handling long time events (such as accessing a network) needs to be placed in another thread (preventing the current UI thread from being manipulated and drawn). However, you cannot modify UI elements in other threads, such as updating custom view with a background thread (calling view's OnDraw function in Custom view) is not allowed. If it takes a long time to draw an in
I have been looking for some examples of SurfaceView image painting recently. I am a beginner. At the beginning, I don't know how to start drawing images on SurfaceView. I finally learned the video tutorial, then, sort out the notes in the learning process and release them as follows. The following two views are inherited from SurfaceView and are one or two custo
Reprint please indicate source: http://blog.csdn.net/lmj623565791/article/details/41722441, this article from: "Zhang Hongyang's Blog"1. OverviewToday to everyone to bring surfaceview a practical case, saying that custom view is also a variety of writing, has not written surfaceview, what is this thing? When would it be better to use it?You can see that Surfaceview
MediaPlayer and SurfaceView for Android Development You can use MediaPlayer to play audio and video files. However, when you use MediaPlayer to play a video, the image output interface is not provided. You can use the SurfaceView component to display video images. Using MediaPlayer and SurfaceView to play a video can be roughly divided into the following four ste
A drawing is made in the previous definition view. However, the drawing mechanism for view has the following drawbacks:1, view lacks double buffering mechanism.2. When the program needs to update the image on the view, the program must redraw the entire picture displayed on the view.3. The new thread cannot update the view component directly.Because the view has the above flaw. Therefore, in the game development generally uses the Surfaceview to draw,
The obvious difference between surfaceview and view is that the surface does not need to update the view through a thread, but you must use the lockcanvas method to lock the canvas before painting, and then draw the canvas, after that, use the unlockcanvasandpost method to unlock the canvas. The surfaceview class handles the same event as the View class. First, let's look at a simple framework. Drawing inte
I recently came into contact with surfaceview, surfaceholder, and surfaceholder. Callback, but I have never asked them to solve them. Now I will give them a rough idea. Let's take a look at the official definition: 1. surfaceview Surfaceview is an inherited class of view, which is embedded with a surface dedicated for painting. You can control the format an
SurfaceView plays an important role in game development. Let's have a good look at the information today. With Examples written by yourself.It is enough to use View when writing a picture that is not changing fast. If you use View to write a picture that is changing too fast, the screen may flash. When writing games such as plants vs. Zombies and Fruit Ninja, you cannot use View to meet your requirements. Android provides
This paper introduces the MediaPlayer usage of Android, and introduces the Surfaceview,surfaceview because it can obtain image data directly from hardware interfaces such as memory or DMA, so it is a very important drawing container, This time I will introduce the usage of surfaceview in more detail. There are many uses of Su
This article has shared the solution to the Surfaceview touch path flicker problem The method, for everybody reference, the concrete content is as follows The first way to solve the surfaceview touch path flicker problem: Because Surfaceview uses a dual caching mechanism, the two canvases appear on the screen in turn. Then, to store the touch trajectory and avo
For several days did not write a blog, handling a bit of personal affairs with the usual overtime, basically time is not abundant, on the article said a bit with MediaPlayer to play music, this time on the use of MediaPlayer to and Surfaceview play with a video streaming media. MediaPlayer not only can play video, but also with the Surfaceview, Surfaceview is mai
Recently involved in a multi-person video call business, where the use of Surfaceview is responsible for displaying the user's video stream, did not expect to be pit dead. About showing and hidingBackground: Because it is used in the form of six Gongge to display the video of many people at the same time, the use of Recyclerview to achieve, video with Surfaceview display, if the user turned off the cam
A common custom drawing UI interface class in Android: Surfaceview. You can complete related data updates in an asynchronous thread.A few basic definitions are introduced first, and the following nouns are also designed in other knowledge:1.PaintBrushes, all the images and graphics are done by the brush.The definition is very simple:Paint paint = new paint ();Paint.setcolor (Color.Black);//Set the color of the brush2.CanvasThe canvas, images, and grap
Note: surfaceview does have the onDraw method, but you will not call surfaceview yourself !!! The ondraw () or draw () in my code is a method defined by myself... Keep calling in the thread. Be sure to pay attention to it !! Previously, we made comparisons and trade-offs between the view and surfaceview. Finally, we found that
This article briefly discusses the architecture of future Android game engine templates. In the Android game development Tutorial II: The View class and the Surfaceview class we've talked about, Surfaceview class has a lot of advantages, so in the Android game development or choose Surfaceview. Here we inherit Surfaceview
This article is for reading http://blog.csdn.net/xiaominghimi/article/details/6089594 's notes.The main role in Android games, in addition to the control class is the display class. What's involved in Android is the view class, and other subclasses of the Surfaceview class and surfaceview that inherit from it.This is the first view and Surfaceview. The direct sub
The previous drawing is in the custom view, but the view's drawing mechanism has the following drawbacks:1, view lacks double buffering mechanism.2. When the program needs to update the image on the view, the program must redraw the entire picture displayed on the view.3. The new thread cannot update the view component directly.Because the view has the above flaw, in the game development generally uses the Surfaceview to draw,
Surfaceview This article is a secondary article of "[Android] surfaceview using instances. This article consists of four parts. The first three parts are taken from the network, posted in the original article, and the first part is the sodino original code. Please read the first three parts carefully before reading Part 1 "4. Why is surfaceview able to refresh th
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