/** * 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 陽光健康信息技術有限公司 */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帶進度的進度條,線程安全的View,可直接在線程中更新進度 * */public class RoundProgressBar extends View { /** * 畫筆對象的引用 */ private Paint paint; /** * 圓環的顏色 */ private int roundColor; /** * 圓環進度的顏色 */ private int roundProgressColor; /** * 中間進度百分比的字符串的顏色 */ private int textColor; /** * 中間進度百分比的字符串的字體 */ private float textSize; /** * 圓環的寬度 */ private float roundWidth; /** * 最大進度 */ private int max; /** * 當前進度 */ private int progress; /** * 是否顯示中間的進度 */ private boolean textIsDisplayable; /** * 進度的風格,實心或者空心 */ 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); //獲取自定義屬性和默認值 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); /** * 畫最外層的大圓環 */ int centerX = getWidth()/2; int centerY = getHeight()/2; int centre = centerX>centerY?centerY:centerX; int radius = (int) (centre - roundWidth/2); //圓環的半徑 paint.setColor(roundColor); //設置圓環的顏色 paint.setStyle(Paint.Style.STROKE); //設置空心 paint.setStrokeWidth(roundWidth); //設置圓環的寬度 paint.setAntiAlias(true); //消除鋸齒 canvas.drawCircle(centerX, centerY, radius, paint); //畫出圓環 // Log.e("log", centre + ""); /** * 畫進度百分比 */ paint.setStrokeWidth(0); paint.setColor(textColor); paint.setTextSize(textSize); paint.setTypeface(Typeface.DEFAULT_BOLD); //設置字體 int percent = (int)(((float)progress / (float)max) * 100); //中間的進度百分比,先轉換成float在進行除法運算,否則都爲0 float textWidth = paint.measureText(percent + "%"); //測量字體寬度,咱們須要根據字體的寬度設置在圓環中間 if(textIsDisplayable && percent != 0 && style == STROKE){ canvas.drawText(percent + "%", centerX - textWidth / 2, centerY + textSize/2, paint); //畫出進度百分比 } /** * 畫圓弧 ,畫圓環的進度 */ //設置進度是實心仍是空心 paint.setStrokeWidth(roundWidth); //設置圓環的寬度 paint.setColor(roundProgressColor); //設置進度的顏色 RectF oval = new RectF(centerX - radius, centerY - radius, centerX + radius, centerY + radius); //用於定義的圓弧的形狀和大小的界限 switch (style) { case STROKE:{ paint.setStyle(Paint.Style.STROKE); canvas.drawArc(oval, 90, 360 * progress / max, false, paint); //根據進度畫圓弧 break; } case FILL:{ paint.setStyle(Paint.Style.FILL_AND_STROKE); if(progress !=0){ canvas.drawArc(oval, 90, 360 * progress / max, true, paint); //根據進度畫圓弧 } break; } } } public synchronized int getMax() { return max; } /** * 設置進度的最大值 * @param max */ public synchronized void setMax(int max) { if(max < 0){ throw new IllegalArgumentException("max not less than 0"); } this.max = max; } /** * 獲取進度.須要同步 * @return */ public synchronized int getProgress() { return progress; } /** * 設置進度,此爲線程安全控件,因爲考慮多線的問題,須要同步 * 刷新界面調用postInvalidate()能在非UI線程刷新 * @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; }}