canvas drawarc android example

implementation of the class Eraseview, the following look at the code of this class:First we need to define a canvas and a brush 12345678910 paint =newPaint();paint.setStyle(Paint.Style.STROKE);paint.setXfermode(newPorterDuffXfermode(Mode.CLEAR));paint.setAntiAlias(true);paint.setDither(true);paint.setStrokeJoin(Paint.Join.ROUND);paint.setStrokeCap(Paint.Cap.ROUND);paint.setStrokeWidth(30);mCanvas =newCanvas(bitmap); When you

indicate that the method has handled the event return true; } }); Root.addview (Drawview); } } Main.xml: [HTML] View Plain copy print? XML version="1.0" encoding="Utf-8" ?> linearlayout xmlns:android="http://schemas.android.com /apk/res/android " android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:background="#99FFCC"

View is a superclass of Android, which contains almost all screen types. Each view has a canvas for drawing, which can be expanded at will. You can customize the view in game development. The canvas function can meet our needs in game development. In Android, any view class only needs to override the ondraw method to

canvas ){...MMatrix. setRotate (mRotate, x, y );MShader. setLocalMatrix (mMatrix );MRotate + = 3;If (mRotate> = 360 ){MRotate = 0;}Invalidate ();...} Float x = 160;Float y = 100;MShader = new SweepGradient (x, y, new int [] {Color. GREEN,Color. RED,Color. BLUE,Color. GREEN}, null );MPaint. setShader (mShader );...Protected void onDraw (Canvas canvas ){...MMatrix

; Draw The method that corresponds to our implementation is Onmeasure () OnLayout () OnDraw () In actual drawing, our thinking order is generally like this: Whether you want to control the size of the control--> is-->onmeasure () (1) If this custom view is not a viewgroup,onmeasure () method call Setmeasuredeminsion (width,height): Used to set its own size(2) if the Viewgroup,onmeasure () method is invoked, child.measure () measures the child's size, gives the child's expected size value,

(), otherwise the next call will have an impact.Unless you don't use Typedarray again.3. We put MyView in the activity_main.xml, of course, in the code through the AddView function added to the layout.Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent" Xmlns:myview= "Http://schemas.android.com/apk/res-auto"Android:paddingbottom= "@dimen/activity_vertical_margin"Android:paddingleft= "@dimen/activity_horizontal_margin"Android:pa

, the picture formatted in ARGB format. Imgblank =Bitmap.createbitmap (Imgtop.getwidth (), Imgtop.getheight (), Bitmap.Config.ARGB_4444); //Create the Imgblank as a canvas. Canvas Canvas =NewCanvas (Imgblank); //Paint the Imgtop on the canvasCanvas.drawbitmap (imgtop, 0, 0,NULL); Ivtop.setimagebitmap (Imgblank); Ivbottom.setimagebitmap (Imgbottom);

this example, the basic graph is two intersecting circles, and the above four modes are used to fill the graph: [Java] www.2cto.comShowPath (canvas, 0, 0,Path. FillType. WINDING, paint );ShowPath (canvas, 160, 0,Path. FillType. EVEN_ODD, paint );ShowPath (canvas, 0,160,Path. FillType. INVERSE_WINDING, paint );ShowPath

) {mwidth = Widthspecsize;} else {mwidth = 0;}//measurespec.at_most, maximum size, as long as the parent control is not exceeded Maximum allowable size, measurespec.unspecified unspecified size if (Heightspecmode = = Measurespec.at_most | | heightspecmode = = measurespec.unspecified) {mheight = Diptopx ();} else {mheight = heightspecsize;}//Set the actual size of the control setmeasureddimension (mWi DTH, mheight); } } Mainactivity.java File Package com.example.progresstest; Import

Bitmap Source code example in Android development Package android.graphics; Import Java.awt.image.BufferedImage; Import Java.io.File; Import java.io.IOException; Import Java.io.InputStream; Import Javax.imageio.ImageIO; Public final class Bitmap extends _original_bitmap { Private BufferedImage mimage; Public Bitmap (File input) throws IOException { Super (1, true, NULL,-1); Mimage = Imageio.read

The example in this article describes the box2d usage of the 2d physical engine under Android. Share to everyone for your reference. Specifically as follows: When the program is running, it needs to load the jbox2d library, which can be downloaded at the following address (using the library Jbox2d-2.0.1-library-only.jar without the render part): http://sourceforge.net/projects/jbox2d/ Package com.tes

This example describes the Surfaceview usage in Android. Share to everyone for your reference, specific as follows: Here a small program code, mainly using Surfaceview to draw a circle on the screen, you can by pressing the arrow keys and touch the screen to change the position of the circle Code: Activity: Package Com.view; Import android.app.Activity; Import Android.os.Bundle; Import Android

This example describes the use of Android sprite animations. Share to everyone for your reference. Specifically as follows: Elaineanimated.java files are as follows: Package Net.obviam.walking.model; Import Android.graphics.Bitmap; Import Android.graphics.Canvas; Import Android.graphics.Paint; Import Android.graphics.Rect; public class Elaineanimated {private static final String TAG = ElaineAnimated

This example describes the Android basic game cycle. Share to everyone for your reference. as follows: Desired FPS private final static int max_fps = 50; Maximum number of frames to be skipped private final static int max_frame_skips = 5; The frame period private final static int frame_period = 1000/max_fps; @Override public void Run () {Canvas

processing did the packaging and processing. So there are actually two kinds of gesture recognition techniques in Android. One is the touch screen gesture recognition, the other is the input method gesture recognition. The second is more flexible, you can customize gestures, compare high! So in this section we first introduce the first gesture recognition: touch screen gesture recognition. In the next blog I will give children's shoes to explain the

implementation of the class Eraseview, the following look at the code of this class:First we need to define a canvas and a brush 12345678910 paint =new Paint();paint.setStyle(Paint.Style.STROKE);paint.setXfermode(new PorterDuffXfermode(Mode.CLEAR));paint.setAntiAlias(true);paint.setDither(true);paint.setStrokeJoin(Paint.Join.ROUND);paint.setStrokeCap(Paint.Cap.ROUND);paint.setStrokeWidth(30);mCanvas =new

First, the basisa lot of Android Getting Started program apes may be more fearful about Android custom view, but this is the only way to get to the master's level, all ready to spend some time on custom view and write more articles. To summarize the steps for customizing the view first:1. Customize View Properties2, in the view of the construction method to get our custom attributes3. Rewrite onmesure4. Rew

Previous: http://www.bkjia.com/kf/201208/146799.html When a direction key or traceball is used to move the UI Focus, there are some UI controls, such as Listview, which can contain sub-UIS (such as list items and Cell items) in the GridView. After the Focus is moved to this type of UI control, you can use the direction keys or traceball to move the selected list items or Cell items within the Listview or GridView. This example introduces a Custom UI c

An example of this article describes the Android programming to achieve the 3D rotation effect of the method. Share to everyone for your reference, specific as follows: The following example is the result of 3D rotation of the picture in Android. 3D effects generally use OpenGL, but in the

This paper briefly introduces the basic use of Surfaceview in Android, this article will introduce the Surfaceview and multithread mix and match. Surfaceview is a multi-threaded application that is designed to prevent animation from flashing. The multithreading usage of Android is exactly the same as that of Java, this article does not introduce multithreading. Directly to explain the mixed use of Surfacevi