自定义view之一-----圆形进度条
现在这个项目，有一个圆形进度条的动画比较有意思，这个demo，是我结合网上的一篇博文和公司同事写的自定义控件写的。可以和大家分享一下：
一：动画效果：
二：源码：
(1)res/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="TIME_TICKER" value="0"></enum>
<enum name="PROGRESS" value="1"></enum>
</attr>
</declare-styleable>
</resources>
(2)RoundProgressBar01.java
package com.example.roundprogressbar;
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.util.Log;
import android.view.View;
//博客地址：http://blog.csdn.net/xiaanming/article/details/10298163
public class RoundProgressBar01 extends View{
private final static String TAG = "RoundProgressBar01";
private Paint paint;
private int roundColor;
private int roundProgressColor;
private int textColor;
private float textSize;
private float roundWidth;
private int max;
private int progress;
private boolean textIsDisplayable;
private int style;
public static final int STROKE = 0;
public static final int FILL = 1;
public RoundProgressBar01(Context context) {
this(context, null);
}
public RoundProgressBar01(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public RoundProgressBar01(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context,attrs);
}
private void init(Context context, AttributeSet attrs) {
// TODO Auto-generated method stub
paint = new Paint();
TypedArray mTypedArray = context.obtainStyledAttributes(attrs,R.styleable.RoundProgressBar);
roundColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundColor, Color.RED);
roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN);
textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.GREEN);
textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15);
roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 20);
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();
}
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Log.i(TAG, "RoundProgressBar01--onDraw");
/**
* 画最外层的大圆环
*/
int centre = getWidth()/2; //获取圆心的x坐标
int radius = (int) (centre - roundWidth/2); //圆环的半径
Log.i(TAG, "onDraw:"+"centre:"+centre+"--radius:"+radius);
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(centre, centre, radius, paint); //画出圆环
/**
* 画进度百分比
*/
paint.setStrokeWidth(0);
paint.setColor(textColor);
paint.setTextSize(textSize);
paint.setTypeface(Typeface.DEFAULT_BOLD); //设置字体
//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
int percent = (int)(((float)progress / (float)max) * 100);
//测量字体宽度，我们需要根据字体的宽度设置在圆环中间
float textWidth = paint.measureText(percent + "%");
Log.i(TAG, "onDraw:"+"textIsDisplayable:"+textIsDisplayable+"--percent:"+percent+"--style == STROKE:"+(style == STROKE));
//if(textIsDisplayable && percent != 0 && style == STROKE){
if(textIsDisplayable && style == STROKE){
//画出进度百分比
canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, paint);
}
/**
* 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
//用于定义的圆弧的形状和大小的界限
RectF oval = new RectF(centre - radius, centre - radius, centre+ radius, centre + radius);
switch (style) {
case STROKE:{
paint.setStyle(Paint.Style.STROKE);
//根据进度画圆弧
canvas.drawArc(oval, 0, 360 * progress / max, false, paint);
break;
}
case FILL:{
paint.setStyle(Paint.Style.FILL_AND_STROKE);
if(progress !=0)
//根据进度画圆弧
canvas.drawArc(oval, 0, 360 * progress / max, true, paint);
break;
}
}
}
public synchronized int getMax() {
return max;
}
public synchronized void setMax(int max) {
if(max < 0){
throw new IllegalArgumentException("max not less than 0");
}
this.max = max;
}
public synchronized int getProgress() {
return 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;
}
public synchronized void setStyle(int style){
this.style = style;
}
}
(3)RoundProgressBar.java
package com.example.roundprogressbar;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.graphics.Paint.Style;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
public class RoundProgressBar extends View{
private final static String TAG = "RoundProgressBar";
private Paint paint ;
private int roundColor;
private int roundProgressColor;
private int textColor;
private float textSize;
private float roundWidth;
private int max;
private float progress;
private boolean textIsDisplayable;
private int style;
private int digree1 = 0;
private String time ="";
private int lastTime = 0;
private int pointWidth = 4;
public static final int TIME_TICKER = 0;
public static final int PROGRESS = 1;
private float progressStep = (float) 0.1;
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);
// TODO Auto-generated constructor stub
init(context,attrs);
//tickerHandler.sendMessageDelayed(tickerHandler.obtainMessage(1), 1000);
}
private void init(Context context, AttributeSet attrs) {
// TODO Auto-generated method stub
paint =new Paint();
TypedArray mTypeArray = context.obtainStyledAttributes(attrs, R.styleable.RoundProgressBar);
roundColor = mTypeArray.getColor(R.styleable.RoundProgressBar_roundColor, Color.RED);
roundProgressColor = mTypeArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN);
textColor = mTypeArray.getColor(R.styleable.RoundProgressBar_textColor,Color.GREEN);
textSize = mTypeArray.getDimension(R.styleable.RoundProgressBar_textSize, 15);
roundWidth = mTypeArray.getDimension(R.styleable.RoundProgressBar_roundWidth,5);
max = mTypeArray.getInteger(R.styleable.RoundProgressBar_max, 60);
textIsDisplayable = mTypeArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);
style = mTypeArray.getInt(R.styleable.RoundProgressBar_style, 0);
progress = 0.0f;
mTypeArray.recycle();
}
// Handler tickerHandler = new Handler(){
// @Override
// public void handleMessage(Message msg) {
// // TODO Auto-generated method stub
// super.handleMessage(msg);
// switch(msg.what){
// case 1:
// invalidate();
// break;
// case 2:
// invalidate();
// break;
// }
// }
// };
@Override
protected void onDraw(Canvas canvas){
Log.i(TAG, "RoundProgressBar--onDraw");
int centre = getWidth()/2;
int padding = 10;
int radius = (int)(centre-roundWidth/2)-padding;
Rect rect = new Rect();
paint.setColor(roundColor);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(roundWidth);
paint.setAntiAlias(true);
paint.setTextSize(textSize);
paint.setAlpha(180);
switch(style){
case TIME_TICKER:
{
float tl = paint.measureText(time)+padding;
float arc = (float)Math.asin(tl/2/radius);
float arc_b = (float)Math.toDegrees(arc);
RectF oval_1 = new RectF(centre-radius,centre-radius,centre+radius,centre+radius);
//canvas.drawArc(oval_1, (-90+arc_b), (360-2*arc_b), false, paint);
canvas.drawArc(oval_1, 0, 360, false, paint);
//paint.setStrokeWidth(roundWidth);
paint.setColor(roundProgressColor);
//paint.setAlpha(0);
if(lastTime == (int)progress)
progress += progressStep;
if(progress > 100)
progress = 0;
RectF oval = new RectF(centre-radius,centre-radius,centre+radius,centre+radius);
//canvas.drawArc(oval, (-90+arc_b), (360-2*arc_b)*progress/max, false, paint);
canvas.drawArc(oval, -90, 270*progress/max, false, paint);
paint.setStrokeWidth(0);
paint.setColor(textColor);
paint.setTextSize(textSize);
paint.setTypeface(Typeface.DEFAULT_BOLD);
float textWidth = paint.measureText(time);
paint.getTextBounds(time, 0, time.length(), rect);
int textheight = rect.height();
canvas.drawText(time, centre-textWidth/2,centre+textheight/2,paint);
this.lastTime = (int)progress;
//tickerHandler.sendMessageDelayed(tickerHandler.obtainMessage(1), 100);
invalidate();
break;
}
case PROGRESS:
{
int x1,y1;
canvas.drawCircle(centre, centre, radius, paint);
if (digree1 > 360)
digree1 = 0;
else if(digree1>335)
digree1 +=3;
else if(digree1>305)
digree1+=2;
else if(digree1 >270)
digree1 +=1;
else if(digree1>225)
digree1 +=3;
else if(digree1 >180)
digree1 +=4;
else if(digree1>135 )
digree1 +=7;
else if(digree1 >90)
digree1 +=10;
else if(digree1>45)
digree1 +=10;
else
digree1 +=7;
x1 =(int)(centre+radius*Math.cos(digree1*Math.PI/180));
y1 = (int)(centre+radius*Math.sin(digree1*Math.PI/180));
paint.setStyle(Style.FILL);
canvas.drawCircle(x1, y1, roundWidth+pointWidth, paint);
invalidate();
break;
}
}
}
public synchronized void setTime(String time,int progress){
this.time = time;
this.progress = progress;
}
public synchronized void setPointWidth(int pointWidth){
this.pointWidth = pointWidth;
}
public synchronized void setStyle(int style){
this.style = style;
}
public synchronized int getMax(){
return max;
}
public synchronized void setMax(int max){
if(max<0){
throw new IllegalArgumentException("max not less than 0");
}
this.max = max;
}
public synchronized float getProgress(){
return 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 getCricelColor(){
return roundColor;
}
public int getCricelProgressColor(){
return roundProgressColor;
}
public void setCircleProgressColor(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 void setProgressStep(float progressStep){
this.progressStep = progressStep;
}
public float getRoundWidth(){
return roundWidth;
}
public void setRoundWidth(float roundWidth){
this.roundWidth = roundWidth;
}
}
(4)布局文件：res/layout/activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom_progress="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
>
<com.example.roundprogressbar.RoundProgressBar01
android:id="@+id/roundProgressBar_01"
android:layout_width="80dip"
android:layout_height="80dip"
custom_progress:roundColor="#3300d1d1"
custom_progress:roundProgressColor="@android:color/black"
custom_progress:textColor="#9A32CD"
custom_progress:textIsDisplayable="true"
custom_progress:roundWidth="10dip"
custom_progress:textSize="18sp"
/>
<com.example.roundprogressbar.RoundProgressBar01
android:id="@+id/roundProgressBar_04"
android:layout_width="80dip"
android:layout_height="80dip"
android:layout_toRightOf="@id/roundProgressBar_01"
custom_progress:roundColor="#3300d1d1"
custom_progress:roundProgressColor="@android:color/black"
custom_progress:textColor="#9A32CD"
custom_progress:textIsDisplayable="true"
custom_progress:roundWidth="10dip"
custom_progress:textSize="18sp"
custom_progress:style="PROGRESS"
/>
<com.example.roundprogressbar.RoundProgressBar
android:id="@+id/roundProgressBar_02"
android:layout_below="@id/roundProgressBar_01"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center"
custom_progress:roundColor="#3300d1d1"
custom_progress:roundProgressColor="@android:color/white"
custom_progress:textColor="#FFFFFF"
custom_progress:textIsDisplayable="true"
custom_progress:roundWidth="1dip"
custom_progress:textSize="12sp"
custom_progress:style="PROGRESS"
/>
<com.example.roundprogressbar.RoundProgressBar
android:id="@+id/roundProgressBar_03"
android:layout_below="@id/roundProgressBar_02"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center"
custom_progress:roundColor="#3300d1d1"
custom_progress:roundProgressColor="@android:color/white"
custom_progress:textColor="#9A32CD"
custom_progress:textIsDisplayable="true"
custom_progress:roundWidth="1dip"
custom_progress:textSize="12sp"
custom_progress:style="TIME_TICKER"
/>
</RelativeLayout>
(5):MainActivity.java
package com.example.roundprogressbar;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.app.Activity;
public class MainActivity extends Activity {
private final static String TAG = "MainActivity";
private RoundProgressBar01 roundProgressBar_01 = null;
private RoundProgressBar roundProgressBar_02 = null;
private RoundProgressBar roundProgressBar_03 = null;
private int TIME_TICKER = 0;
private int PROGRESS = 1;
private int time = 0;
private int progress = 0;
private final int UPDATE_UI_01 = 1;
private final int UPDATE_UI_02 = 2;
private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
super.handleMessage(msg);
switch(msg.what){
case UPDATE_UI_01:
Log.i(TAG, "UPDATE_UI_01");
progress++;
if(progress > 100){
progress = 0;
}
handler.sendEmptyMessageDelayed(UPDATE_UI_01, 1000);
updateUIRoundProgressBar_01(progress);
break;
case UPDATE_UI_02:
Log.i(TAG, "UPDATE_UI_02");
time++;
if(time >= 100)
time = 0;
handler.sendEmptyMessageDelayed(UPDATE_UI_02, 1000);
updateUI_02(time);
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
handler.sendEmptyMessageDelayed(UPDATE_UI_01, 1000);
//handler.sendEmptyMessageDelayed(UPDATE_UI_02, 1000);
}
private void init() {
// TODO Auto-generated method stub
roundProgressBar_01 = (RoundProgressBar01)findViewById(R.id.roundProgressBar_01);
roundProgressBar_01.setStyle(TIME_TICKER);
roundProgressBar_01.setProgress(1);
progress = 1;
roundProgressBar_02 = (RoundProgressBar)findViewById(R.id.roundProgressBar_02);
roundProgressBar_02.setStyle(PROGRESS);
roundProgressBar_03 = (RoundProgressBar)findViewById(R.id.roundProgressBar_03);
roundProgressBar_03.setStyle(TIME_TICKER);
roundProgressBar_03.setTime("test:"+progress, progress);
}
private void updateUI_02(int time){
//roundProgressBar_02.setTime("test"+time,time);
}
private void updateUI_03(String time,int progress){
roundProgressBar_03.setTime("test"+time, progress);
}
private void updateUIRoundProgressBar_01(int progress){
roundProgressBar_01.setProgress(progress);
}
}
三：源码下载地址：
http://download.csdn.net/download/hfreeman2008/8202741
四：参考资料：
1.Android 高手进阶之自定义View，自定义属性（带进度的圆形进度条）
http://blog.csdn.net/xiaanming/article/details/10298163