mInnerBackGroud.draw(canvas);

for(int i = 0;i < mPieceNumber ; i++){drawArc(i , canvas);
}

/** 按索引值绘制扇区，第一个扇区的中心位于3点钟方向*/
public void drawArc(int index , Canvas canvas){int startdegree  =  mPieceDegree * (index) - (mPieceDegree - mDividerDegree) / 2;if(index == mSelectIndex){mOuterArcPaint.setColor(0xFFcacccc);}else{mOuterArcPaint.setColor(outArcColor[index]);}float radious  = ((float)mWidth - (float)outArctrokeWidth) / 2 - padding ;float midDegree = startdegree + ( mPieceDegree  - mDividerDegree) /2 ;double x  = radious * Math.cos(midDegree * Math.PI/180);double y  = radious * Math.sin(midDegree  * Math.PI/180);x = x + getOriginal().x;y = y + getOriginal().y;canvas.drawArc(mOuterArcRectangle, startdegree, mPieceDegree  - mDividerDegree, false, mOuterArcPaint);Rect rect = new Rect();mOuterTextPaint.getTextBounds(items.get(index).getTitle(), 0, items.get(index).getTitle().length(), rect);int txWidth  = rect.width();int txHeight = rect.height();canvas.drawText(items.get(index).getTitle(), (int)x - txWidth/2, (int)y + txHeight/2, mOuterTextPaint);
}

if(index == mSelectIndex){mOuterArcPaint.setColor(0xFFcacccc);
}else{mOuterArcPaint.setColor(outArcColor[index]);
}

if(mSelectIndex == -1){Log.i(TAG,"mSelectIndex = "+mSelectIndex);mInnerBackGroud.setState(PRESSED_FOCUSED_STATE_SET);
}else{mInnerBackGroud.setState(EMPTY_STATE_SET);
}

@Override
public boolean onTouchEvent(MotionEvent event) {if(event.getAction() == MotionEvent.ACTION_DOWN) {mSelectIndex = getTouchArea(new Point(event.getX() , event.getY()));this.invalidate();Log.i(TAG ,"mSelectIndex =" +mSelectIndex);//mSelectIndex = -1;}else if(event.getAction() == MotionEvent.ACTION_UP && event.getAction() != MotionEvent.ACTION_CANCEL){int upIndex = getTouchArea(new Point(event.getX() , event.getY()));if(mListener != null){mListener.onPieceClick(upIndex);}mSelectIndex = -2;this.invalidate();}else if(event.getAction() == MotionEvent.ACTION_CANCEL){mSelectIndex = -2;this.invalidate();}return true;
}

public interface OnPieceClickListener {void onPieceClick(int whitchPiece);
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.jcodecraeer.gossipview.MainActivity" ><com.jcodecraeer.gossipview.GossipViewandroid:id="@+id/gossipview"android:layout_width="fill_parent"android:layout_height="fill_parent" />
</RelativeLayout>

...GossipView gossipView = (GossipView)findViewById(R.id.gossipview);String [] strs = {"安卓","微软","苹果","谷歌","百度","腾讯"} ;final List<GossipItem> items =new ArrayList<GossipItem>();for(int i = 0; i < strs.length; i++) {GossipItem item = new GossipItem(strs[i],3);items.add(item);}gossipView.setItems(items);gossipView.setNumber(3);gossipView.setOnPieceClickListener( new GossipView.OnPieceClickListener(){@Overridepublic void onPieceClick(int index) {if(index != -1 &&  index != -2) {Toast.makeText(MainActivity.this, "你选择了" + items.get(index).getTitle(), 300).show();}}});
....

package com.jcodecraeer.gossipview;
public class GossipItem  {private String title;private int index;public GossipItem (String title,int index){this.title =title;this.index = index;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public int getIndex() {return index;}public void setIndex(int index) {this.index = index;}
}