旋钮它工作正常.
但是我怎么能修改上面的旋钮看起来像第二个图像
第一个旋钮的运行代码如下所示.
import androID.content.Context;import androID.graphics.Bitmap;import androID.graphics.BitmapFactory;import androID.graphics.Canvas;import androID.graphics.color;import androID.graphics.Matrix;import androID.graphics.Paint;import androID.graphics.RectF;import androID.vIEw.GestureDetector;import androID.vIEw.GestureDetector.OnGestureListener;import androID.vIEw.VIEw.MeasureSpec;import androID.vIEw.MotionEvent;import androID.Widget.ImageVIEw;import androID.Widget.ImageVIEw.ScaleType;import androID.Widget.relativeLayout;public class RoundKnobbutton extends relativeLayout implements OnGestureListener { public int eventValue=10; //doctory starts Paint p1,p2,p3; RectF oval; int wIDth; //doctory ends private GestureDetector gestureDetector; private float mAngleDown,mAngleUp; private ImageVIEw ivRotor; private Bitmap bmpRotorOn,bmpRotorOff; private boolean mState = false; private int m_nWIDth = 0,m_nHeight = 0; public interface RoundKnobbuttonListener { public voID onStateChange(boolean newstate); public voID onRotate(int percentage); } private RoundKnobbuttonListener m_Listener; public voID SetListener(RoundKnobbuttonListener l) { m_Listener = l; } public voID SetState(boolean state) { mState = state; ivRotor.setimageBitmap(state ? bmpRotorOn : bmpRotorOff); } public RoundKnobbutton(Context context,int back,int rotoron,int rotoroff,final int w,final int h) { super(context); //doctory starts wIDth = w; p1 = new Paint(1); p1.setcolor(color.rgb(86,86,86)); p1.setStyle(androID.graphics.Paint.Style.FILL); p2 = new Paint(1); p2.setcolor(color.rgb(245,109,89)); p2.setStyle(androID.graphics.Paint.Style.FILL); p3 = new Paint(1); p3.setcolor(color.GREEN); p3.setStyle(androID.graphics.Paint.Style.stroke); oval = new RectF(); //doctory ends... // we won't wait for our size to be calculated,we'll just store out // fixed size m_nWIDth = w; m_nHeight = h; // create stator ImageVIEw ivBack = new ImageVIEw(context); ivBack.setimageResource(back); relativeLayout.LayoutParams lp_ivBack = new relativeLayout.LayoutParams( w,h); lp_ivBack.addRule(relativeLayout.CENTER_IN_PARENT); addVIEw(ivBack,lp_ivBack); // load rotor images Bitmap srcon = BitmapFactory.decodeResource(context.getResources(),rotoron); Bitmap srcoff = BitmapFactory.decodeResource(context.getResources(),rotoroff); float scaleWIDth = ((float) w) / srcon.getWIDth(); float scaleHeight = ((float) h) / srcon.getHeight(); Matrix matrix = new Matrix(); matrix.postscale(scaleWIDth,scaleHeight); bmpRotorOn = Bitmap.createBitmap(srcon,srcon.getWIDth(),srcon.getHeight(),matrix,true); bmpRotorOff = Bitmap.createBitmap(srcoff,srcoff.getWIDth(),srcoff.getHeight(),true); // create rotor ivRotor = new ImageVIEw(context); ivRotor.setimageBitmap(bmpRotorOn); relativeLayout.LayoutParams lp_ivKnob = new relativeLayout.LayoutParams( w,h);// LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT); lp_ivKnob.addRule(relativeLayout.CENTER_IN_PARENT); addVIEw(ivRotor,lp_ivKnob); // set initial state SetState(mState); // enable gesture detector gestureDetector = new GestureDetector(getContext(),this); } /** * math.. * * @param x * @param y * @return */ private float cartesiantopolar(float x,float y) { return (float) -Math.todegrees(Math.atan2(x - 0.5f,y - 0.5f)); } @OverrIDe public boolean ontouchEvent(MotionEvent event) { if (gestureDetector.ontouchEvent(event)) return true; else return super.ontouchEvent(event); } public boolean onDown(MotionEvent event) { float x = event.getX() / ((float) getWIDth()); float y = event.getY() / ((float) getHeight()); mAngleDown = cartesiantopolar(1 - x,1 - y);// 1- to correct our custom // axis direction return true; } public boolean onSingleTapUp(MotionEvent e) { float x = e.getX() / ((float) getWIDth()); float y = e.getY() / ((float) getHeight()); mAngleUp = cartesiantopolar(1 - x,1 - y);// 1- to correct our custom // axis direction // if we click up the same place where we clicked down,it's just a // button press if (!float.isNaN(mAngleDown) && !float.isNaN(mAngleUp) && Math.abs(mAngleUp - mAngleDown) < 10) { SetState(!mState); if (m_Listener != null) m_Listener.onStateChange(mState); } return true; } public voID setRotorPosAngle(float deg) { if (deg >= 210 || deg <= 150) { if (deg > 180) deg = deg - 360; Matrix matrix = new Matrix(); ivRotor.setScaleType(ScaleType.MATRIX); // matrix.postRotate((float) deg,210 / 2,210 / 2);// getWIDth()/2,// getHeight()/2); matrix.postRotate((float) deg,m_nWIDth/2,m_nHeight/2);//getWIDth()/2,getHeight()/2); ivRotor.setimageMatrix(matrix); } } public voID setRotorPercentage(int percentage) { int posDegree = percentage * 3 - 150; if (posDegree < 0) posDegree = 360 + posDegree; setRotorPosAngle(posDegree); } public boolean onScroll(MotionEvent e1,MotionEvent e2,float distanceX,float distanceY) { float x = e2.getX() / ((float) getWIDth()); float y = e2.getY() / ((float) getHeight()); float rotdegrees = cartesiantopolar(1 - x,1 - y);// 1- to correct our // custom axis // direction if (!float.isNaN(rotdegrees)) { // instead of getting 0-> 180,-180 0,we go for 0 -> 360 float posdegrees = rotdegrees; if (rotdegrees < 0) posdegrees = 360 + rotdegrees; // deny full rotation,start start and stop point,and get a linear // scale if (posdegrees > 210 || posdegrees < 150) { // rotate our imagevIEw setRotorPosAngle(posdegrees); // get a linear scale float scaledegrees = rotdegrees + 150; // given the current // parameters,we go // from 0 to 300 // get position percent int percent = (int) (scaledegrees / 3); if (m_Listener != null) m_Listener.onRotate(percent); return true; // consumed } else return false; } else return false; // not consumed } public voID onShowPress(MotionEvent e) { // Todo auto-generated method stub } public boolean onFling(MotionEvent arg0,MotionEvent arg1,float arg2,float arg3) { return false; } public voID onLongPress(MotionEvent e) { } /*@OverrIDe protected voID onDraw(Canvas canvas) { super.onDraw(canvas); int i = wIDth / 4; oval.set(i - i / 2,i / 2,i * 3 + i / 2,i * 3 + i / 2); canvas.drawoval(oval,p1); canvas.drawArc(oval,-90F,(int)Math.round((360D * Double.valueOf(eventValue).doubleValue()) / 100D),true,p2); canvas.drawline(20,30,120,200,p2); }*/ /*@OverrIDe protected voID onMeasure(int wIDthMeasureSpec,int heightmeasureSpec) { int desireDWIDth = wIDth; int desiredHeight = wIDth; int wIDthMode = androID.vIEw.VIEw.MeasureSpec.getMode(wIDthMeasureSpec); int wIDthSize = androID.vIEw.VIEw.MeasureSpec.getSize(wIDthMeasureSpec); int heightmode = androID.vIEw.VIEw.MeasureSpec.getMode(heightmeasureSpec); int heightSize = androID.vIEw.VIEw.MeasureSpec.getSize(heightmeasureSpec); int measureDWIDth; int measuredHeight; if (wIDthMode == MeasureSpec.EXACTLY) { measureDWIDth = wIDthSize ; } else if (wIDthMode == MeasureSpec.AT_MOST) { measureDWIDth = Math.min(desireDWIDth,wIDthSize); } else { measureDWIDth = desireDWIDth; } if (heightmode == MeasureSpec.EXACTLY) { measuredHeight = heightSize ; } else if (heightmode == MeasureSpec.AT_MOST) { measuredHeight = Math.min(desiredHeight,heightSize ); } else { measuredHeight = desiredHeight; } setMeasuredDimension(measureDWIDth,measuredHeight); }*/} 我创建了onDraw和onMeasure函数函数并尝试绘制外部进度,或者我如何修改它.
编辑
是否可以将旋转百分比更改为20.我的意思是它显示从0到99的进度.是否可以将其转换为0到12.
解决方法 使用两个XML文件.circular_progress_drawable.xml
<?xml version="1.0" enCoding="utf-8"?><rotate xmlns:androID="http://schemas.androID.com/apk/res/androID" androID:fromdegrees="270" androID:todegrees="270"> <shape androID:innerRadiusRatio="2.5" androID:shape="ring" androID:thickness="1dp"> <gradIEnt androID:angle="0" androID:endcolor="#22FA05" androID:startcolor="#22FA05" androID:type="sweep" androID:useLevel="false" /> </shape></rotate>
和background_circle.xml
<?xml version="1.0" enCoding="utf-8"?><shape xmlns:androID="http://schemas.androID.com/apk/res/androID" androID:shape="ring" androID:innerRadiusRatio="2.5" androID:thickness="1dp" androID:useLevel="false"> <solID androID:color="#000000" /></shape>
最后
<Progressbar androID:ID="@+ID/progressbar" androID:layout_wIDth="250dp" androID:layout_height="250dp" androID:indeterminate="false" androID:progressDrawable="@drawable/circular_progress_drawable" androID:background="@drawable/background_circle" androID:max="100" androID:progress="25" />
请注意,根据您拥有的图像位置设置宽度和高度
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