本文实例为大家分享了android自定义环形对比图的具体代码，供大家参考，具体内容如下

1.首先在res/values里创建一个attr.xml的文件。

<?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>

2.然后为自定义对比图View

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; /** * 弧线对比图 * @param * @return * @author LH * @data 2016年1月25日 下午6:17:34 **/public class AnswerChartView extends View { // 圆画笔 private Paint mCirclePaint; // 圆环画笔 private Paint mRingPaint; // 百分数画笔 private Paint mTextPaint; // 文本画笔 private Paint mTextPaint2; // 里面圆颜色 private int mCircleColor; // 里面弧颜色 private int mInnerRingColor; // 外面弧颜色 private int mOutRingColor; // 空白的圆半径 private float mRadius; // 里面的弧半径 private float mRingRadius; // 最外弧半径 private float mRingRadius2; // 圆环的宽度 private float mStrokeWidth; // 文本的中心x轴位置 private int mXCenter; // 文本的中心y轴位置 private int mYCenter; // 百分比文本的宽度 private float mTxtWidth; // 描述文本的宽度 private float mTxtWidth2; // 文本的高度 private float mTxtHeight; // 百分数文本的大小 private float mTxtSize; // 总成绩 private int mTotalProgress = 100; // 个人的正确率 private double mInnerProgress; // 班级的正确率 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 = "正确率"; 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 = "正确率"; 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(); } }

3.使用自定义View

<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" />

4.最后可已在AnswerChartActivity中设置内环和外环的百分比和属性

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;//个人的正确率 private double cAccuracy;//班级的正确率 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(); title=intent.getStringExtra("title"); 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+"道题"); 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); } /** *进度动画效果 * @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; } }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。