<?xml version="1.0" encoding="utf-8"?><resources>  <declare-styleable name="AnswerChartView">  <attr name="radius" format="dimension"/>  <attr name="strokeWidth" format="dimension"/>  <attr name="circleColor" format="color"/>  <attr name="innerringColor" format="color"/>  <attr name="outringColor" format="color"/>  <attr name="textSize" format="dimension"/> </declare-styleable> </resources>

package com.jsle.ebag.answer.view;  import com.jsle.ebag.answer.R;  import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.RectF;import android.graphics.Paint.FontMetrics;import android.util.AttributeSet;import android.view.View;  /** * 弧線對比圖 * @param * @return * @author LH * @data 2016年1月25日 下午6:17:34 **/public class AnswerChartView extends View {   // 圓畫筆 private Paint mCirclePaint; // 圓環畫筆 private Paint mRingPaint; // 百分數畫筆 private Paint mTextPaint; // 文本畫筆 private Paint mTextPaint2; // 里面圓顏色 private int mCircleColor; // 里面弧顏色 private int mInnerRingColor; // 外面弧顏色 private int mOutRingColor; // 空白的圓半徑 private float mRadius; // 里面的弧半徑 private float mRingRadius; // 最外弧半徑 private float mRingRadius2; // 圓環的寬度 private float mStrokeWidth; // 文本的中心x軸位置 private int mXCenter; // 文本的中心y軸位置 private int mYCenter; // 百分比文本的寬度 private float mTxtWidth; // 描述文本的寬度 private float mTxtWidth2; // 文本的高度 private float mTxtHeight; // 百分數文本的大小 private float mTxtSize; // 總成績 private int mTotalProgress = 100; // 個人的正確率 private double mInnerProgress; // 班級的正確率 private double mOutProgress; public AnswerChartView(Context context, AttributeSet attrs) { super(context, attrs); initAttrs(context, attrs); initVariable(); }   private void initAttrs(Context context, AttributeSet attrs) { TypedArray typeArray = context.getTheme().obtainStyledAttributes(attrs, R.styleable.AnswerChartView, 0, 0); mRadius = typeArray.getDimension(R.styleable.AnswerChartView_radius, 80); mTxtSize=typeArray.getDimension(R.styleable.AnswerChartView_textSize, 20); mStrokeWidth = typeArray.getDimension(R.styleable.AnswerChartView_strokeWidth, 10); mCircleColor = typeArray.getColor(R.styleable.AnswerChartView_circleColor, 0xFFFFFFFF); mOutRingColor = typeArray.getColor(R.styleable.AnswerChartView_innerringColor, 0xFFFFFFFF); mInnerRingColor = typeArray.getColor(R.styleable.AnswerChartView_outringColor, 0xFFFFFFFF); mRingRadius = mRadius + mStrokeWidth / 2; mRingRadius2 = mRadius + mStrokeWidth/2*3; }   private void initVariable() { mCirclePaint = new Paint(); mCirclePaint.setAntiAlias(true); mCirclePaint.setStyle(Paint.Style.FILL);   mRingPaint = new Paint(); mRingPaint.setAntiAlias(true); mRingPaint.setColor(mInnerRingColor); mRingPaint.setStyle(Paint.Style.STROKE); mRingPaint.setStrokeWidth(mStrokeWidth);   mTextPaint = new Paint(); mTextPaint.setAntiAlias(true); mTextPaint.setStyle(Paint.Style.FILL); mTextPaint.setARGB(255, 32, 207, 152); mTextPaint.setTextSize(mTxtSize);  mTextPaint2 = new Paint(); mTextPaint2.setAntiAlias(true); mTextPaint2.setStyle(Paint.Style.FILL); mTextPaint2.setARGB(255, 0, 0, 0); mTextPaint2.setTextSize(20); FontMetrics fm = mTextPaint.getFontMetrics(); mTxtHeight = (int) Math.ceil(fm.descent - fm.ascent);   }   @Override protected void onDraw(Canvas canvas) {   mXCenter = getWidth() / 2; mYCenter = getHeight() / 2;   mCirclePaint.setColor(getResources().getColor(R.color.gray)); canvas.drawCircle(mXCenter,mYCenter, mRadius + mStrokeWidth*2, mCirclePaint);  RectF oval1 = new RectF(); oval1.left = (mXCenter - mRingRadius); oval1.top = (mYCenter - mRingRadius); oval1.right = mRingRadius * 2 + (mXCenter - mRingRadius); oval1.bottom = mRingRadius * 2 + (mYCenter - mRingRadius); mRingPaint.setColor(mOutRingColor); canvas.drawArc(oval1, -90, ((float)mOutProgress / mTotalProgress) * 360, false, mRingPaint);  mCirclePaint.setColor(mCircleColor); canvas.drawCircle(mXCenter, mYCenter, mRadius, mCirclePaint); if (mInnerProgress > 0 ) { RectF oval = new RectF(); oval.left = (mXCenter - mRingRadius2); oval.top = (mYCenter - mRingRadius2); oval.right = mRingRadius2 * 2 + (mXCenter - mRingRadius2); oval.bottom = mRingRadius2 * 2 + (mYCenter - mRingRadius2); mRingPaint.setColor(mInnerRingColor); canvas.drawArc(oval, -90, ((float)mInnerProgress / mTotalProgress) * 360, false, mRingPaint); // // canvas.drawCircle(mXCenter, mYCenter, mRadius + mStrokeWidth / 2, mRingPaint); String txt = mInnerProgress + "%"; String txt2 = "正確率"; mTxtWidth = mTextPaint.measureText(txt, 0, txt.length()); mTxtWidth2 = mTextPaint2.measureText(txt2, 0, txt2.length()); canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter+mTxtWidth / 8, mTextPaint); canvas.drawText(txt2 ,mXCenter - mTxtWidth2 / 2, mYCenter + mTxtWidth / 2, mTextPaint2); }else if(mInnerProgress==0){ String txt = mInnerProgress + "%"; String txt2 = "正確率"; mTxtWidth = mTextPaint.measureText(txt, 0, txt.length()); mTxtWidth2 = mTextPaint2.measureText(txt2, 0, txt2.length()); canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter+mTxtWidth / 8, mTextPaint); canvas.drawText(txt2 ,mXCenter - mTxtWidth2 / 2, mYCenter + mTxtWidth / 2, mTextPaint2); } } public void setOutProgress(double progress){ mOutProgress=progress; } public void setInnerProgress(double progress) { mInnerProgress = progress; // invalidate(); postInvalidate(); }  }

<com.jsle.ebag.answer.view.AnswerChartView   android:id="@+id/tasks_view"   android:layout_width="160dp"   android:layout_height="160dp"   android:layout_centerHorizontal="true"   tc:circleColor="@color/circle_color"   tc:innerringColor="@color/dark_yellow"   tc:outringColor="@color/green"   tc:radius="60dip"   tc:strokeWidth="6dip"   tc:textSize="32sp" />

package com.jsle.ebag.answer.activity; import java.text.DecimalFormat; import com.jsle.ebag.answer.R;import com.jsle.ebag.answer.R.layout;import com.jsle.ebag.answer.view.AnswerChartView; import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.LinearLayout;import android.widget.TextView; public class AnswerChartActivity extends BaseActivity implements OnClickListener { private AnswerChartView mTasksView; private double mAccuracy;//個人的正確率 private double cAccuracy;//班級的正確率 private double mCurrentProgress; private LinearLayout btn_black; private TextView tv_title,tv_subjectcount,tv_submit,tv_accuracy; private String title; private double maccuracy,caccuracy; private int subjectcount,submit; @Override protected int getID() { // TODO Auto-generated method stub return R.id.Activity_ID_AnswerChart; } @Override protected String getTag() { // TODO Auto-generated method stub return "AnswerChart_Acitivity"; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_answer_chart); btn_black=(LinearLayout) findViewById(R.id.btn_black); tv_title=(TextView) findViewById(R.id.tv_title); tv_subjectcount=(TextView) findViewById(R.id.tv_subjectcount); tv_submit=(TextView) findViewById(R.id.tv_submit); tv_accuracy=(TextView) findViewById(R.id.tv_accuracy); btn_black.setOnClickListener(this); getData(); initVariable(); initView(); new Thread(new ProgressRunable()).start(); } private void getData() { // TODO Auto-generated method stub Intent intent = getIntent(); maccuracy = intent.getDoubleExtra("maccuracy", 0); caccuracy = intent.getDoubleExtra("caccuracy", 0); subjectcount=intent.getIntExtra("subjectcount", 0); submit=intent.getIntExtra("submit", 0); } private void initVariable() { tv_title.setText(title); tv_subjectcount.setText("共"+subjectcount+"道題"); tv_submit.setText(submit+""); tv_accuracy.setText(caccuracy+"%"); mAccuracy =maccuracy; cAccuracy=caccuracy; mCurrentProgress = 0; } private void initView() { mTasksView = (AnswerChartView) findViewById(R.id.tasks_view); mTasksView.setOutProgress(cAccuracy); } /** *進度動畫效果 * @author LH * @data 2016年1月29日 下午3:43:31 **/ class ProgressRunable implements Runnable {  @Override public void run() { while (mCurrentProgress < mAccuracy) { mCurrentProgress += 1; if(mCurrentProgress>mAccuracy){  mCurrentProgress=mAccuracy; } mTasksView.setInnerProgress(mCurrentProgress); try {  Thread.sleep(15); } catch (Exception e) {  e.printStackTrace(); } } }  }  @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.btn_black: finish(); break;  default: break; } }}