自定义圆环progressbar
RoundProgressBar.java
/**
* RoundProgressBar.java [v1.0.0]
* classes: com.example.audiorecordingtest.RoundProgressBar
* Amanda Create at 2014年10月10日 下午4:16:45
* Copyright 阳光健康信息技术有限公司
*/
package com.example.audiorecordingtest.view;
/**
* com.example.audiorecordingtest.RoundProgressBar
* @author Amanda
* create at 2014年10月10日 下午4:16:45
*/
import com.example.audiorecordingtest.R;
import com.example.audiorecordingtest.R.styleable;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.view.View;
/**
* 仿iphone带进度的进度条,线程安全的View,可直接在线程中更新进度
*
*/
public class RoundProgressBar extends View {
/**
* 画笔对象的引用
*/
private Paint paint;
/**
* 圆环的颜色
*/
private int roundColor;
/**
* 圆环进度的颜色
*/
private int roundProgressColor;
/**
* 中间进度百分比的字符串的颜色
*/
private int textColor;
/**
* 中间进度百分比的字符串的字体
*/
private float textSize;
/**
* 圆环的宽度
*/
private float roundWidth;
/**
* 最大进度
*/
private int max;
/**
* 当前进度
*/
private int progress;
/**
* 是否显示中间的进度
*/
private boolean textIsDisplayable;
/**
* 进度的风格,实心或者空心
*/
private int style;
public static final int STROKE = 0;
public static final int FILL = 1;
public RoundProgressBar(Context context) {
this(context, null);
}
public RoundProgressBar(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public RoundProgressBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
paint = new Paint();
TypedArray mTypedArray = context.obtainStyledAttributes(attrs,
R.styleable.RoundProgressBar);
//获取自定义属性和默认值
roundColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundColor, Color.rgb(245, 252, 248));
roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.rgb(62, 187, 102));
textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.BLACK);
textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15);
roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 5);
max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100);
textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);
style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 0);
mTypedArray.recycle();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
/**
* 画最外层的大圆环
*/
int centerX = getWidth()/2;
int centerY = getHeight()/2;
int centre = centerX>centerY?centerY:centerX;
int radius = (int) (centre - roundWidth/2); //圆环的半径
paint.setColor(roundColor); //设置圆环的颜色
paint.setStyle(Paint.Style.STROKE); //设置空心
paint.setStrokeWidth(roundWidth); //设置圆环的宽度
paint.setAntiAlias(true); //消除锯齿
canvas.drawCircle(centerX, centerY, radius, paint); //画出圆环
// Log.e("log", centre + "");
/**
* 画进度百分比
*/
paint.setStrokeWidth(0);
paint.setColor(textColor);
paint.setTextSize(textSize);
paint.setTypeface(Typeface.DEFAULT_BOLD); //设置字体
int percent = (int)(((float)progress / (float)max) * 100); //中间的进度百分比,先转换成float在进行除法运算,不然都为0
float textWidth = paint.measureText(percent + "%"); //测量字体宽度,我们需要根据字体的宽度设置在圆环中间
if(textIsDisplayable && percent != 0 && style == STROKE){
canvas.drawText(percent + "%", centerX - textWidth / 2, centerY + textSize/2, paint); //画出进度百分比
}
/**
* 画圆弧 ,画圆环的进度
*/
//设置进度是实心还是空心
paint.setStrokeWidth(roundWidth); //设置圆环的宽度
paint.setColor(roundProgressColor); //设置进度的颜色
RectF oval = new RectF(centerX - radius, centerY - radius, centerX
+ radius, centerY + radius); //用于定义的圆弧的形状和大小的界限
switch (style) {
case STROKE:{
paint.setStyle(Paint.Style.STROKE);
canvas.drawArc(oval, 90, 360 * progress / max, false, paint); //根据进度画圆弧
break;
}
case FILL:{
paint.setStyle(Paint.Style.FILL_AND_STROKE);
if(progress !=0){
canvas.drawArc(oval, 90, 360 * progress / max, true, paint); //根据进度画圆弧
}
break;
}
}
}
public synchronized int getMax() {
return max;
}
/**
* 设置进度的最大值
* @param max
*/
public synchronized void setMax(int max) {
if(max < 0){
throw new IllegalArgumentException("max not less than 0");
}
this.max = max;
}
/**
* 获取进度.需要同步
* @return
*/
public synchronized int getProgress() {
return progress;
}
/**
* 设置进度,此为线程安全控件,由于考虑多线的问题,需要同步
* 刷新界面调用postInvalidate()能在非UI线程刷新
* @param progress
*/
public synchronized void setProgress(int progress) {
if(progress < 0){
throw new IllegalArgumentException("progress not less than 0");
}
if(progress > max){
progress = max;
}
if(progress <= max){
this.progress = progress;
postInvalidate();
}
}
public int getCricleColor() {
return roundColor;
}
public void setCricleColor(int cricleColor) {
this.roundColor = cricleColor;
}
public int getCricleProgressColor() {
return roundProgressColor;
}
public void setCricleProgressColor(int cricleProgressColor) {
this.roundProgressColor = cricleProgressColor;
}
public int getTextColor() {
return textColor;
}
public void setTextColor(int textColor) {
this.textColor = textColor;
}
public float getTextSize() {
return textSize;
}
public void setTextSize(float textSize) {
this.textSize = textSize;
}
public float getRoundWidth() {
return roundWidth;
}
public void setRoundWidth(float roundWidth) {
this.roundWidth = roundWidth;
}
}
values/attrs.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="RoundProgressBar">
<attr name="roundColor" format="color"/>
<attr name="roundProgressColor" format="color"/>
<attr name="roundWidth" format="dimension"></attr>
<attr name="textColor" format="color" />
<attr name="textSize" format="dimension" />
<attr name="max" format="integer"></attr>
<attr name="textIsDisplayable" format="boolean"></attr>
<attr name="style">
<enum name="STROKE" value="0"></enum>
<enum name="FILL" value="1"></enum>
</attr>
</declare-styleable>
</resources>
layout/audiorecord.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:android_custom="http://schemas.android.com/apk/res/com.example.audiorecordingtest"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2">
<ImageView
android:id="@+id/img_microfan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="@drawable/microfan"
android:scaleType="centerInside"/>
<com.example.audiorecordingtest.view.RoundProgressBar
android:id="@+id/roundProgressBar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android_custom:roundColor="#f6fcf8"
android_custom:roundProgressColor="#41c36b"
android_custom:textIsDisplayable="false"
android_custom:roundWidth="5dp"/>
</FrameLayout>
<TextView
android:id="@+id/txt_microfan"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center"
android:text="正在录音……"
android:textColor="#3c3c3c"
android:textSize="30px"/>
</LinearLayout>
作者:风倾清凌
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