surfaceholder

Android.graphics.Color; Import Android.graphics.Paint; Import Android.graphics.RectF; Import Android.view.SurfaceHolder; Import Android.view.SurfaceHolder.Callback; Import Android.view.SurfaceView; public class Particleview extends Surfaceview implements Callback {public static final int die_out_line = 300; Drawthread DT; Particleset PS; Particlethread pt; String fps = "fps:n/a"; Public Particleview {Super (context); This.getholder (). Addcallback (this); DT =

This article for everyone to share the Android game development Collision detection, for your reference, the specific content as follows The principle of rectangular collision : Four kinds of two rectangular positions not in these four cases are collisions Circular Collision principle: Using the distance between the two centers to determine. When the distance between two centers is less than the radius of the collision. Pixel Collision principle: Not applicable traversal all pixel detection

it draws is accurate.For a lightweight game like snake/chess, we can do this, but for some fighting games it is not very useful, when you want to draw a large number of image resources/ringtones resources when it will not meet the need. We need a special view:surfaceview at this time.Fortunately, Google provided me with an example: Jetboy. Let's look at how to use Surfaceview.(1) First of all, you write the Surfaceview need to implement this interface Surfaceholder.callback, whose purpose is we

invalidate directly. Because of this, the touch and the next touch will take longer and will not have an impact.2 active updates. Like a man running all the time. This requires a separate thread to redraw the human state continuously, avoiding blocking the main UI thread. So obviously the view is not suitable, need surfaceview to control.Double buffering:Excerpt from http://blog.csdn.net/tobacco5648/article/details/8261749Surfaceview in Android updates the view to improve the efficiency of the

SurfaceView is generally used for games. [Java]Package com. himi;Import android. content. Context;Import android. graphics. Canvas;Import android. graphics. Color;Import android. graphics. Paint;Import android. view. SurfaceHolder;Import android. view. SurfaceView;Import android. view. SurfaceHolder. Callback;Import android. view. animation. Animation;/*** @ Author Himi*/Public class MySurfaceView extends S

; Import android. graphics. BitmapFactory; Import android. graphics. Canvas; Import android. graphics. Color; Import android. graphics. Paint; Import android. util. Log; Import android. view. GestureDetector; Import android. view. MotionEvent; Import android. view. SurfaceHolder; Import android. view. SurfaceView; Import android. view. View; Import android. view. GestureDetector. OnGestureListener; Import android. view.

principle is carmack scroll algorithm principle.The following analysis code area :In fact, aside from the Android platform, any platform, to do such a game, all need these logic. For Android platforms, let's take a look at the Surfaceview drawing frame. Direct Sticker Code:Package edu.njupt.zhb.game.view;/** * * @author Zheng Haibo * @webset: Http://www.mobctrl.net * @android Development Alliance QQ Group: 272209595 */public class Planeview extends Surfaceview implements Callback, Runnable {pri

Android. View. surfaceholder;Import Android. View. surfaceview;Import Android. View. surfaceholder. Callback; Public class circle extends surfaceview implements callback, runnable {Private surfaceholder SFH;Private paint;Private thread;Private Boolean flag;Private canvas;Private int screenw, screenh;Private paintflagsdrawfilter PFD = new paintflagsdrawfilter (0

drawBitmap (Bitmap bitmap, Matrix matrix, Paint paint ); After the invalidate () function is called, the system will re-call the onDraw () function in the near future. This time is short but not predictable. I used to call onDraw () write an if statement and use validate to let the system call onDraw in an endless loop to fl two images. The two images are almost flushed together. 2.2. Surface View Canvas (1) define a SurfaceView: class your_surfaceview extends SurfaceView implements

Android. util. attributeset;Import Android. View. motionevent;Import Android. View. surfaceholder;Import Android. View. surfaceview;Import Android. View. surfaceholder. Callback;Public class rudder extends surfaceview implements runnable, callback {Private surfaceholder mholder;Private Boolean isstop = false;Private thread mthread;Private paint mpaint;Private po

. content. context; import android. graphics. bitmap; import android. graphics. canvas; import android. graphics. color; import android. graphics. paint; import android. graphics. paintflagsdrawfilter; import android. graphics. path; import android. graphics. pixelformat; import android. graphics. point; import android. graphics. re CT; import android. graphics. paint. style; import android. util. attributeset; import android. util. log; import android. view. gravity; import android. view. keyev