本文实例讲述了Android精灵动画用法。分享给大家供大家参考。具体如下：

ElaineAnimated.java文件如下：

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 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.class.getSimpleName(); private Bitmap bitmap; // the animation sequence private Rect sourceRect; // the rectangle to be drawn from the animation bitmap private int frameNr; // number of frames in animation private int currentFrame; // the current frame private long frameTicker; // the time of the last frame update private int framePeriod; // milliseconds between each frame (1000/fps) private int spriteWidth; // the width of the sprite to calculate the cut out rectangle private int spriteHeight; // the height of the sprite private int x; // the X coordinate of the object (top left of the image) private int y; // the Y coordinate of the object (top left of the image) public ElaineAnimated(Bitmap bitmap, int x, int y, int width, int height, int fps, int frameCount) { this.bitmap = bitmap; this.x = x; this.y = y; currentFrame = 0; frameNr = frameCount; spriteWidth = bitmap.getWidth() / frameCount; spriteHeight = bitmap.getHeight(); sourceRect = new Rect(0, 0, spriteWidth, spriteHeight); framePeriod = 1000 / fps; frameTicker = 0l; } public Bitmap getBitmap() { return bitmap; } public void setBitmap(Bitmap bitmap) { this.bitmap = bitmap; } public Rect getSourceRect() { return sourceRect; } public void setSourceRect(Rect sourceRect) { this.sourceRect = sourceRect; } public int getFrameNr() { return frameNr; } public void setFrameNr(int frameNr) { this.frameNr = frameNr; } public int getCurrentFrame() { return currentFrame; } public void setCurrentFrame(int currentFrame) { this.currentFrame = currentFrame; } public int getFramePeriod() { return framePeriod; } public void setFramePeriod(int framePeriod) { this.framePeriod = framePeriod; } public int getSpriteWidth() { return spriteWidth; } public void setSpriteWidth(int spriteWidth) { this.spriteWidth = spriteWidth; } public int getSpriteHeight() { return spriteHeight; } public void setSpriteHeight(int spriteHeight) { this.spriteHeight = spriteHeight; } public int getX() { return x; } public void setX(int x) { this.x = x; } public int getY() { return y; } public void setY(int y) { this.y = y; } // the update method for Elaine public void update(long gameTime) { if (gameTime > frameTicker + framePeriod) { frameTicker = gameTime; // increment the frame currentFrame++; if (currentFrame >= frameNr) { currentFrame = 0; } } // define the rectangle to cut out sprite this.sourceRect.left = currentFrame * spriteWidth; this.sourceRect.right = this.sourceRect.left + spriteWidth; } // the draw method which draws the corresponding frame public void draw(Canvas canvas) { // where to draw the sprite Rect destRect = new Rect(getX(), getY(), getX() + spriteWidth, getY() + spriteHeight); canvas.drawBitmap(bitmap, sourceRect, destRect, null); canvas.drawBitmap(bitmap, 20, 150, null); Paint paint = new Paint(); paint.setARGB(50, 0, 255, 0); canvas.drawRect(20 + (currentFrame * destRect.width()), 150, 20 + (currentFrame * destRect.width()) + destRect.width(), 150 + destRect.height(), paint); } }

希望本文所述对大家的Android程序设计有所帮助。