自定義view原環進度圈

第一view類

package views;

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 wangyajie on 2017/10/21.

*/

public class CompletedView extends View {

// 畫實心圓的畫筆

private Paint mCirclePaint;

// 畫圓環的畫筆

private Paint mRingPaint;

// 畫圓環的畫筆背景色

private Paint mRingPaintBg;

// 畫字體的畫筆

private Paint mTextPaint;

// 圓形顏色

private int mCircleColor;

// 圓環顏色

private int mRingColor;

// 圓環背景顏色

private int mRingBgColor;

// 半徑

private float mRadius;

// 圓環半徑

private float mRingRadius;

// 圓環寬度

private float mStrokeWidth;

// 圓心x座標

private int mXCenter;

// 圓心y座標

private int mYCenter;

// 字的長度

private float mTxtWidth;

// 字的高度

private float mTxtHeight;

// 總進度

private int mTotalProgress = 100;

// 當前進度

private int mProgress;

public CompletedView(Context context, AttributeSet attrs) {

super(context, attrs);

// 獲取自定義的屬性

initAttrs(context, attrs);

initVariable();

}

//屬性

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;

}

//初始化畫筆

private void initVariable() {

//內圓

mCirclePaint = new Paint();

mCirclePaint.setAntiAlias(true);

mCirclePaint.setColor(mCircleColor);

mCirclePaint.setStyle(Paint.Style.FILL);

//外圓弧背景

mRingPaintBg = new Paint();

mRingPaintBg.setAntiAlias(true);

mRingPaintBg.setColor(mRingBgColor);

mRingPaintBg.setStyle(Paint.Style.STROKE);

mRingPaintBg.setStrokeWidth(mStrokeWidth);

//外圓弧

mRingPaint = new Paint();

mRingPaint.setAntiAlias(true);

mRingPaint.setColor(mRingColor);

mRingPaint.setStyle(Paint.Style.STROKE);

mRingPaint.setStrokeWidth(mStrokeWidth);

//mRingPaint.setStrokeCap(Paint.Cap.ROUND);//設置線冒樣式，有圓 有方

//中間字

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);

}

//畫圖

@Override

protected void onDraw(Canvas canvas) {

mXCenter = getWidth() / 2;

mYCenter = getHeight() / 2;

//內圓

canvas.drawCircle(mXCenter, mYCenter, mRadius, mCirclePaint);

//外圓弧背景

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); //圓弧所在的橢圓對象、圓弧的起始角度、圓弧的角度、是否顯示半徑連線

//外圓弧

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); //

//字體

String txt = mProgress + "分";

mTxtWidth = mTextPaint.measureText(txt, 0, txt.length());

canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter + mTxtHeight / 4, mTextPaint);

}

}

//設置進度

public void setProgress(int progress) {

mProgress = progress;

postInvalidate();//重繪

}

}

第二佈局

引用時在佈局的上邊加上

xmlns:tc="http://schemas.android.com/apk/res/com.***.test.***"

com.***.test.*** 是你自己的包名

<views.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" />

第三attrs文件

<?xml version="1.0" encoding="utf-8"?>

<resources>

<!--圓弧進度條-->

<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>

第四顏色

粘到colors文件裏

<color name="white">#FFFFFF</color>

<color name="white2">#f5f3f3</color>

<color name="colorRed">#d50f09</color>