众v创业营网站开发,营销活动方案策划,知企业网站怎么打不开,专业做生鲜的网站本文实例讲述了Android编程绘图操作之弧形绘制方法。分享给大家供大家参考#xff0c;具体如下#xff1a;/*** 绘制弧形图案* description#xff1a;* author ldm* date 2016-4-25 下午4:37:01*/public class ArcsActivity extends Activity {Overrideprotected void onCr…本文实例讲述了Android编程绘图操作之弧形绘制方法。分享给大家供大家参考具体如下/*** 绘制弧形图案* description* author ldm* date 2016-4-25 下午4:37:01*/public class ArcsActivity extends Activity {Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(new SampleView(this));}/*** 自定义绘制图案的View** description* author ldm* date 2016-4-25 下午4:19:40*/private static class SampleView extends View {// 画圆形图案的画笔数组private Paint[] mPaints;// 画矩形的画笔private Paint mFramePaint;// 是否以矩形中心画图private boolean[] mUseCenters;// 矩形框数组private RectF[] mOvals;// 上面较大的矩形框private RectF mBigOval;// 画圆弧起点private float mStart;// 画圆弧角度private float mSweep;// 画大图形对应角标indexprivate int mBigIndex;// 角度变化增量private static final float ANGLE_STEP 3;// 初始角度private static final float START_ANGLE 15;public SampleView(Context context) {super(context);mPaints new Paint[4];mUseCenters new boolean[4];mOvals new RectF[4];mPaints[0] new Paint();mPaints[0].setAntiAlias(true);// 设置抗紧钜齿mPaints[0].setStyle(Paint.Style.FILL);// 设置画笔填充风格mPaints[0].setColor(0x88FF0000);// 设置颜色mUseCenters[0] false;mPaints[1] new Paint(mPaints[0]);mPaints[1].setColor(0x8800FF00);mUseCenters[1] true;mPaints[2] new Paint(mPaints[0]);mPaints[2].setStyle(Paint.Style.STROKE);// 设置画笔空心风格mPaints[2].setStrokeWidth(4);// 设置画笔宽度mPaints[2].setColor(0x880000FF);// 设置颜色mUseCenters[2] false;mPaints[3] new Paint(mPaints[2]);mPaints[3].setColor(0x88888888);mUseCenters[3] true;mBigOval new RectF(40, 10, 280, 250);// 初始化较大的矩形mOvals[0] new RectF(10, 270, 70, 330);// 初始化4个较小矩形mOvals[1] new RectF(90, 270, 150, 330);mOvals[2] new RectF(170, 270, 230, 330);mOvals[3] new RectF(250, 270, 310, 330);mFramePaint new Paint();mFramePaint.setAntiAlias(true);mFramePaint.setStyle(Paint.Style.STROKE);mFramePaint.setStrokeWidth(0);}Overrideprotected void onDraw(Canvas canvas) {canvas.drawColor(Color.WHITE);// 画大矩形canvas.drawRect(mBigOval, mFramePaint);// 在大矩形分别 画4个圆弧图形canvas.drawArc(mBigOval, mStart, mSweep, mUseCenters[mBigIndex],mPaints[mBigIndex]);for (int i 0; i 4; i) {canvas.drawRect(mOvals[i], mFramePaint);// 画四个小矩形canvas.drawArc(mOvals[i], mStart, mSweep, mUseCenters[i],// 在四个小矩形中分别画圆弧mPaints[i]);}mSweep ANGLE_STEP;// 弧度改变if (mSweep 360) {// 弧度控制mSweep - 360;mStart START_ANGLE;if (mStart 360) {mStart - 360;}mBigIndex (mBigIndex 1) % mOvals.length;}invalidate();}}}静态效果如图希望本文所述对大家Android程序设计有所帮助。
