Android 自定义漂亮的圆形进度条
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公司有这样一个需求,实现这个圆弧进度条
所以,现在就将它抽取出来分享
- 如果需要是圆帽的就将,下面这句代码放开即可
- mRingPaint.setStrokeCap(Paint.Cap.ROUND);//设置线冒样式,有圆 有方
不废话,直接上代码
- 自定义view
import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.RectF;import android.util.AttributeSet;import android.view.View;/** * Created by Administrator on 2017/8/5. */public class CompletedView extends View { // 画实心圆的画笔 private Paint mCirclePaint; // 画圆环的画笔 private Paint mRingPaint; // 画圆环的画笔背景色 private Paint mRingPaintBg; // 画字体的画笔 private Paint mTextPaint; // 圆形颜色 private int mCircleColor; // 圆环颜色 private int mRingColor; // 圆环背景颜色 private int mRingBgColor; // 半径 private float mRadius; // 圆环半径 private float mRingRadius; // 圆环宽度 private float mStrokeWidth; // 圆心x坐标 private int mXCenter; // 圆心y坐标 private int mYCenter; // 字的长度 private float mTxtWidth; // 字的高度 private float mTxtHeight; // 总进度 private int mTotalProgress = 100; // 当前进度 private int mProgress; public CompletedView(Context context, AttributeSet attrs) { super(context, attrs); // 获取自定义的属性 initAttrs(context, attrs); initVariable(); } //属性 private void initAttrs(Context context, AttributeSet attrs) { TypedArray typeArray = context.getTheme().obtainStyledAttributes(attrs, R.styleable.TasksCompletedView, 0, 0); mRadius = typeArray.getDimension(R.styleable.TasksCompletedView_radius, 80); mStrokeWidth = typeArray.getDimension(R.styleable.TasksCompletedView_strokeWidth, 10); mCircleColor = typeArray.getColor(R.styleable.TasksCompletedView_circleColor, 0xFFFFFFFF); mRingColor = typeArray.getColor(R.styleable.TasksCompletedView_ringColor, 0xFFFFFFFF); mRingBgColor = typeArray.getColor(R.styleable.TasksCompletedView_ringBgColor, 0xFFFFFFFF); mRingRadius = mRadius + mStrokeWidth / 2; } //初始化画笔 private void initVariable() { //内圆 mCirclePaint = new Paint(); mCirclePaint.setAntiAlias(true); mCirclePaint.setColor(mCircleColor); mCirclePaint.setStyle(Paint.Style.FILL); //外圆弧背景 mRingPaintBg = new Paint(); mRingPaintBg.setAntiAlias(true); mRingPaintBg.setColor(mRingBgColor); mRingPaintBg.setStyle(Paint.Style.STROKE); mRingPaintBg.setStrokeWidth(mStrokeWidth); //外圆弧 mRingPaint = new Paint(); mRingPaint.setAntiAlias(true); mRingPaint.setColor(mRingColor); mRingPaint.setStyle(Paint.Style.STROKE); mRingPaint.setStrokeWidth(mStrokeWidth); //mRingPaint.setStrokeCap(Paint.Cap.ROUND);//设置线冒样式,有圆 有方 //中间字 mTextPaint = new Paint(); mTextPaint.setAntiAlias(true); mTextPaint.setStyle(Paint.Style.FILL); mTextPaint.setColor(mRingColor); mTextPaint.setTextSize(mRadius / 2); Paint.FontMetrics fm = mTextPaint.getFontMetrics(); mTxtHeight = (int) Math.ceil(fm.descent - fm.ascent); } //画图 @Override protected void onDraw(Canvas canvas) { mXCenter = getWidth() / 2; mYCenter = getHeight() / 2; //内圆 canvas.drawCircle(mXCenter, mYCenter, mRadius, mCirclePaint); //外圆弧背景 RectF oval1 = new RectF(); oval1.left = (mXCenter - mRingRadius); oval1.top = (mYCenter - mRingRadius); oval1.right = mRingRadius * 2 + (mXCenter - mRingRadius); oval1.bottom = mRingRadius * 2 + (mYCenter - mRingRadius); canvas.drawArc(oval1, 0, 360, false, mRingPaintBg); //圆弧所在的椭圆对象、圆弧的起始角度、圆弧的角度、是否显示半径连线 //外圆弧 if (mProgress > 0 ) { RectF oval = new RectF(); oval.left = (mXCenter - mRingRadius); oval.top = (mYCenter - mRingRadius); oval.right = mRingRadius * 2 + (mXCenter - mRingRadius); oval.bottom = mRingRadius * 2 + (mYCenter - mRingRadius); canvas.drawArc(oval, -90, ((float)mProgress / mTotalProgress) * 360, false, mRingPaint); // //字体 String txt = mProgress + "分"; mTxtWidth = mTextPaint.measureText(txt, 0, txt.length()); canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter + mTxtHeight / 4, mTextPaint); } } //设置进度 public void setProgress(int progress) { mProgress = progress; postInvalidate();//重绘 }}
- attrs.xml文件
<?xml version="1.0" encoding="utf-8"?><resources> <!--圆弧进度条--> <declare-styleable name="TasksCompletedView"> <attr name="radius" format="dimension"/> <attr name="strokeWidth" format="dimension"/> <attr name="circleColor" format="color"/> <attr name="ringColor" format="color"/> <attr name="ringBgColor" format="color"/> </declare-styleable></resources>
- color.xml文件
<?xml version="1.0" encoding="utf-8"?><resources> <color name="colorPrimary">#3F51B5</color> <color name="colorPrimaryDark">#303F9F</color> <color name="colorAccent">#FF4081</color> <color name="white">#FFFFFF</color> <color name="white2">#f5f3f3</color> <color name="colorRed">#d50f09</color></resources>
- MainActivity文件!,,,注意,,,开一个子线程去刷新进度,如果用系统handler去更新,阻塞主线程会出现界面刷新的卡顿情况,因为handler就是程操作主线程的
public class MainActivity extends AppCompatActivity { private int mTotalProgress = 90; private int mCurrentProgress = 0; //进度条 private CompletedView mTasksView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mTasksView = (CompletedView) findViewById(R.id.tasks_view); new Thread(new ProgressRunable()).start(); } class ProgressRunable implements Runnable { @Override public void run() { while (mCurrentProgress < mTotalProgress) { mCurrentProgress += 1; mTasksView.setProgress(mCurrentProgress); try { Thread.sleep(90); } catch (Exception e) { e.printStackTrace(); } } } }}
- activity_main.xml文件
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tc="http://schemas.android.com/apk/res/com.example.administrator.arcprogresbar" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#addafd" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" android:orientation="vertical"> <com.example.administrator.arcprogresbar.CompletedView android:id="@+id/tasks_view" android:layout_width="223dp" android:layout_height="223dp" tc:circleColor="@color/white" tc:radius="50dip" tc:ringBgColor="@color/white2" tc:ringColor="@color/colorRed" tc:strokeWidth="10dip" /> </LinearLayout></LinearLayout>
布局文件中后面自定义命名空间接着的是应用的包名:xmlns:tc=”http://schemas.android.com/apk/res/com.example.administrator.arcprogresbar”
注意:xmlns:tc=”http://schemas.android.com/apk/res/包名”
再次提醒:刷新进度条要用子线程去执行,防止主线程出现卡顿情况
源码下载:http://download.csdn.net/detail/qq_32519693/9922309
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