自定义view，显示进度标点及进度数值，外进度框和内进度条。
自定义view类
package com.sample.util;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import com.gj.gateway.R;
public class HProgressBar extends View {
private final String TAG = "HProgressBar";
private int mProgress_outline_color = 0xFFFFFFFF;//外边框颜色
private int mProgress_color = 0xFFFFFFFF; //进度条颜色
private int mProgress_circle_color = 0xFFD1F4DE; //圆圈颜色
private int mProgress_text_color = 0xFFFFFFFF; //进度字体颜色
private int mProgress_text_bg_color = 0x50FFFFFF; //进度背景颜色
private float mProgress_circle_height = 56;// 56; //圆圈高度
private float mProgress_height = 40;// 25; //progress高度
private float mProgress_bar_height = 30; //progress进度条高度
private float mProgress_text_height = 35; //进度文字高度
private float mProgress_text_paddingH = 25; //进度文字左右padding
private float mProgress_text_paddingV = 0; //进度文字上下pading
private float mProgress_text_size = 32; //进度文字字体大小
private float mMaxProgress = 100;
private volatile float mProgress_progress_bar = 0;
private int mProgressWidth;
private Paint mOutLinePaint;
private Paint mProgressPaint;
private Paint mCirClePaint;
private Paint mTextPain;
private Paint mTextBgPain;
public HProgressBar(Context context) {
super(context);
Log.d(TAG, "HProgressBar: 1");
}
public HProgressBar(Context context, AttributeSet attrs) {
super(context, attrs);
Log.d(TAG, "HProgressBar: 2");
initDefStyleAttr(attrs);
mOutLinePaint = new Paint();
mOutLinePaint.setColor(mProgress_outline_color);
mOutLinePaint.setAntiAlias(true);
mOutLinePaint.setStrokeWidth(2);
mOutLinePaint.setStyle(Paint.Style.STROKE); //设置空心
mProgressPaint = new Paint();
mProgressPaint.setColor(mProgress_color);
mProgressPaint.setAntiAlias(true);
mCirClePaint = new Paint();
mCirClePaint.setColor(mProgress_circle_color);
mCirClePaint.setAntiAlias(true);
mTextBgPain = new Paint();
mTextBgPain.setColor(mProgress_text_bg_color);
mTextBgPain.setAntiAlias(true);
mTextPain = new Paint();
mTextPain.setColor(mProgress_text_color);
mTextPain.setAntiAlias(true);
mTextPain.setTextSize(mProgress_text_size);
mTextPain.setTextAlign(Paint.Align.CENTER);
mTextPain.setTextSize(mProgress_text_size);
}
public HProgressBar(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
Log.d(TAG, "HProgressBar: 3");
}
public HProgressBar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
Log.d(TAG, "HProgressBar: 4");
}
private void initDefStyleAttr(AttributeSet attrs) {
final TypedArray attributes = getContext().obtainStyledAttributes(attrs, R.styleable.HProgress);
mProgress_outline_color = attributes.getColor(R.styleable.HProgress_hProgress_outline_color, mProgress_outline_color);
mProgress_color = attributes.getColor(R.styleable.HProgress_hProgress_color, mProgress_color);
mProgress_circle_color = attributes.getColor(R.styleable.HProgress_hProgress_circle_color, mProgress_circle_color);
mProgress_text_color = attributes.getColor(R.styleable.HProgress_hProgress_text_color, mProgress_text_color);
mProgress_text_bg_color = attributes.getColor(R.styleable.HProgress_hProgress_text_bg_color, mProgress_text_bg_color);
mProgress_circle_height = (int) attributes.getDimension(R.styleable.HProgress_hProgress_circle_height, mProgress_circle_height);
mProgress_height = (int) attributes.getDimension(R.styleable.HProgress_hProgress_height, mProgress_height);
mProgress_bar_height = (int) attributes.getDimension(R.styleable.HProgress_hProgress_bar_height, mProgress_bar_height);
mProgress_text_height = (int) attributes.getDimension(R.styleable.HProgress_hProgress_text_height, mProgress_text_height);
mProgress_text_size = (int) attributes.getDimension(R.styleable.HProgress_hProgress_text_size, mProgress_text_size);
mProgress_text_paddingH = (int) attributes.getDimension(R.styleable.HProgress_hProgress_text_paddingH, mProgress_text_paddingH);
mProgress_text_paddingV = (int) attributes.getDimension(R.styleable.HProgress_hProgress_text_paddingV, mProgress_text_paddingV);
mProgress_progress_bar = attributes.getInteger(R.styleable.HProgress_hProgress_progress_bar, (int)mProgress_progress_bar);
mMaxProgress = attributes.getInteger(R.styleable.HProgress_hProgress_maxProgress, (int) mMaxProgress);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
mProgressWidth = MeasureSpec.getSize(widthMeasureSpec);
setMeasuredDimension(mProgressWidth, (int )(mProgress_text_height + mProgress_circle_height));
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Rect rect = new Rect();
mTextPain.getTextBounds(String.valueOf(getProgress()), 0, String.valueOf(getProgress()) .length(),rect);
int w = rect.width();
int h = rect.height();
float spaceA = (mProgress_circle_height - mProgress_height) / 2;
float spaceB = (mProgress_height - mProgress_bar_height) / 2;
float progressMargin = mProgress_circle_height / 2;
//长度变化范围等于控件长度减去两边的边距和空隙，由于是圆角进度条，还要减去内进度条的高度，即内进度条两边半圆的长度
float changeRange = mProgressWidth - (progressMargin + spaceB) * 2 - mProgress_bar_height;
float startPoint = progressMargin + spaceB;
float circleX = startPoint + mProgress_bar_height / 2 + changeRange * getProgress() / mMaxProgress;
float textStartX;
float textEndX;
if (circleX - w / 2 - mProgress_text_paddingH < 0) {
textStartX = 0;
textEndX = textStartX + w + mProgress_text_paddingH * 2;
} else if (circleX + w / 2 + mProgress_text_paddingH >= mProgressWidth) {
textStartX = mProgressWidth - mProgress_text_paddingH * 2 - w;
textEndX = mProgressWidth;
} else {
textStartX = circleX - w / 2 - mProgress_text_paddingH;
textEndX = circleX + w / 2 + mProgress_text_paddingH;
}
//画数字背景框
RectF rectF2 = new RectF(textStartX,
mProgress_circle_height,
textEndX,
mProgress_circle_height + mProgress_text_height);
canvas.drawRoundRect(rectF2, mProgress_text_height / 2, mProgress_text_height / 2, mTextBgPain);
//画数字进度
Paint.FontMetrics fontMetrics = mTextPain.getFontMetrics();
canvas.drawText((int)getProgress() + "",
(textStartX + textEndX) / 2,
mProgress_circle_height + mProgress_text_height / 2 + (fontMetrics.descent - fontMetrics.ascent) / 2 - fontMetrics.descent,
mTextPain);
//画progressBar 外边
RectF rectF = new RectF(progressMargin, spaceA,mProgressWidth - progressMargin, mProgress_height + spaceA);
canvas.drawRoundRect(rectF, mProgress_height / 2, mProgress_height / 2, mOutLinePaint);
//画progressBar 内进度条
RectF rectF1 = new RectF(startPoint,
spaceA + spaceB,
startPoint + mProgress_bar_height + changeRange * getProgress()/mMaxProgress,
mProgress_bar_height + spaceB + spaceA);
canvas.drawRoundRect(rectF1, mProgress_bar_height / 2, mProgress_bar_height / 2, mProgressPaint);
//画圆
canvas.drawCircle(circleX,
mProgress_circle_height / 2,
mProgress_circle_height / 2, mCirClePaint);
}
public int getProgress() {
return (int)mProgress_progress_bar;
}
public void setProgress(int progress) {
if (progress > mMaxProgress) {
throw new RuntimeException("progress mast less than mMaxProgress");
}
mProgress_progress_bar = progress;
postInvalidate();
}
public void setmMaxProgress(int maxProgress) {
this.mMaxProgress = maxProgress;
}
}资源文件中attrs.xml对应定义
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="HBLevelView">
<attr name="startProgress" format="float|reference" />
<attr name="scurrProgress" format="float|reference" />
<attr name="endProgress" format="float|reference" />
<attr name="progressTextSize" format="reference|dimension" />
<attr name="backColor" format="color|reference" />
<attr name="foreColor" format="color|reference" />
<attr name="textColor" format="color|reference" />
<attr name="rectCorn" format="dimension|reference" />
</declare-styleable>
<declare-styleable name="HProgress">
<!--外边框颜色-->
<attr name="hProgress_outline_color" format="color" />
<!--进度条颜色-->
<attr name="hProgress_color" format="color" />
<!--圆圈颜色-->
<attr name="hProgress_circle_color" format="color" />
<!--进度字体颜色-->
<attr name="hProgress_text_color" format="color" />
<!--进度背景颜色-->
<attr name="hProgress_text_bg_color" format="color" />
<!--圆圈高度-->
<attr name="hProgress_circle_height" format="dimension" />
<!--progress高度-->
<attr name="hProgress_height" format="dimension" />
<!--progress进度条高度-->
<attr name="hProgress_bar_height" format="dimension" />
<!--进度文字高度-->
<attr name="hProgress_text_height" format="dimension" />
<!--进度文字字体大小-->
<attr name="hProgress_text_size" format="dimension" />
<!--进度文字横向padding-->
<attr name="hProgress_text_paddingH" format="dimension" />
<!--进度文字纵向padding-->
<attr name="hProgress_text_paddingV" format="dimension" />
<!--进度值-->
<attr name="hProgress_progress_bar" format="integer" />
<attr name="hProgress_maxProgress" format="integer" />
</declare-styleable>
</resources>如果想使用该进度条，可以将这两个文件移入到工程目录中，在布局文件中使用自定义类：
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center_horizontal">
<com.sample.util.HProgressBar
android:id="@+id/hprogress_bar_register"
android:layout_width="@dimen/d_885dp"
android:layout_height="@dimen/d_40dp"
android:layout_marginTop="@dimen/d_100dp"
/>
</LinearLayout>操作控件
private HProgressBar mHProgressBar;
....
mHProgressBar = (HProgressBar)findViewById(R.id.hprogress_bar_register);
....
mHProgressBar.setProgress(100);
来源：oschina
链接：https://my.oschina.net/u/4403195/blog/3474318