开发
设计搞了一个带圆形进度的进度条，在GitHub上逛了一圈，发现没有，自己撸吧。
先看界面效果：
主要思路是写一个继承ProgressBar的自定义View，不废话，直接上代码：
package com.fun.progressbarwithnumber;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.util.TypedValue;import android.widget.ProgressBar;public class HorizontalProgressBarWithNumber extends ProgressBar { private static final int DEFAULT_TEXT_SIZE = 10; private static final int DEFAULT_TEXT_COLOR = 0XFFFC00D1; private static final int DEFAULT_COLOR_UNREACHED_COLOR = 0xFFd3d6da; private static final int DEFAULT_HEIGHT_REACHED_PROGRESS_BAR = 2; private static final int DEFAULT_HEIGHT_UNREACHED_PROGRESS_BAR = 2; private static final int DEFAULT_CIRCLE_COLOR = 0XFF3F51B5; protected Paint mPaint = new Paint(); // 字体颜色 protected int mTextColor = DEFAULT_TEXT_COLOR; // 字体大小 protected int mTextSize = sp2px(DEFAULT_TEXT_SIZE); // 覆盖进度高度 protected int mReachedProgressBarHeight = dp2px(DEFAULT_HEIGHT_REACHED_PROGRESS_BAR); // 覆盖进度颜色 protected int mReachedBarColor = DEFAULT_TEXT_COLOR; // 未覆盖进度高度 protected int mUnReachedProgressBarHeight = dp2px(DEFAULT_HEIGHT_UNREACHED_PROGRESS_BAR); // 未覆盖进度颜色 protected int mUnReachedBarColor = DEFAULT_COLOR_UNREACHED_COLOR; // 圆的颜色 protected int mCircleColor = DEFAULT_CIRCLE_COLOR; protected int mRealWidth; protected boolean mIfDrawText = true; protected boolean mIfDrawCircle = true; protected static final int VISIBLE = 0; public HorizontalProgressBarWithNumber(Context context, AttributeSet attrs) { this(context, attrs, 0); } public HorizontalProgressBarWithNumber(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); obtainStyledAttributes(attrs); mPaint.setTextSize(mTextSize); mPaint.setColor(mTextColor); mPaint.setAntiAlias(true); } private void obtainStyledAttributes(AttributeSet attrs) { // 获取自定义属性 final TypedArray attributes = getContext().obtainStyledAttributes(attrs, R.styleable.HorizontalProgressBarWithNumber); mTextColor = attributes.getColor(R.styleable.HorizontalProgressBarWithNumber_progress_text_color, DEFAULT_TEXT_COLOR); mTextSize = (int) attributes.getDimension(R.styleable.HorizontalProgressBarWithNumber_progress_text_size, mTextSize); mCircleColor = attributes.getColor(R.styleable.HorizontalProgressBarWithNumber_progress_circle_color, DEFAULT_CIRCLE_COLOR); mReachedBarColor = attributes.getColor(R.styleable.HorizontalProgressBarWithNumber_progress_reached_color, mTextColor); mUnReachedBarColor = attributes.getColor(R.styleable.HorizontalProgressBarWithNumber_progress_unreached_color, DEFAULT_COLOR_UNREACHED_COLOR); mReachedProgressBarHeight = (int) attributes.getDimension(R.styleable.HorizontalProgressBarWithNumber_progress_reached_bar_height, mReachedProgressBarHeight); mUnReachedProgressBarHeight = (int) attributes.getDimension(R.styleable.HorizontalProgressBarWithNumber_progress_unreached_bar_height, mUnReachedProgressBarHeight); int textVisible = attributes.getInt(R.styleable.HorizontalProgressBarWithNumber_progress_text_visibility, VISIBLE); if (textVisible != VISIBLE) { mIfDrawText = false; } attributes.recycle(); int left = (int) (mReachedProgressBarHeight * 0.8), right = (int) (mReachedProgressBarHeight * 0.8); int top = (int) (mReachedProgressBarHeight * 0.3 + dp2px(1)), bottom = (int) (mReachedProgressBarHeight * 0.3 + dp2px(1)); setPadding(left, top, right, bottom); } @Override protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int width = MeasureSpec.getSize(widthMeasureSpec); int height = measureHeight(heightMeasureSpec); setMeasuredDimension(width, height); mRealWidth = getMeasuredWidth() - getPaddingRight() - getPaddingLeft(); } private int measureHeight(int measureSpec) { int result; int specMode = MeasureSpec.getMode(measureSpec); int specSize = MeasureSpec.getSize(measureSpec); if (specMode == MeasureSpec.EXACTLY) { result = specSize; } else { float textHeight = (mPaint.descent() - mPaint.ascent()); result = (int) (getPaddingTop() + getPaddingBottom() + Math.max( Math.max(mReachedProgressBarHeight, mUnReachedProgressBarHeight), Math.abs(textHeight))); if (specMode == MeasureSpec.AT_MOST) { result = Math.min(result, specSize); } } return result; } @Override protected synchronized void onDraw(Canvas canvas) { canvas.save(); canvas.translate(getPaddingLeft(), getHeight() / 2); boolean noNeedBg = false; float radio = getProgress() * 1.0f / getMax(); float progressPosX = (int) (mRealWidth * radio); String text = getProgress() + "%"; float textWidth = mPaint.measureText(text); float textHeight = (mPaint.descent() + mPaint.ascent()) / 2; float radius = (mReachedProgressBarHeight + getPaddingBottom() + getPaddingTop()) / 2; // 覆盖的进度 float endX = progressPosX; if (endX > -1) { mPaint.setColor(mReachedBarColor); RectF rectF = new RectF(0, 0 - getPaddingTop() - getPaddingBottom(), endX, mReachedProgressBarHeight - getPaddingBottom()); canvas.drawRoundRect(rectF, 25, 25, mPaint); } // 未覆盖的进度 if (!noNeedBg) { float start = progressPosX; mPaint.setColor(mUnReachedBarColor); RectF rectF = new RectF(start, 0 - getPaddingTop() - getPaddingBottom(), mRealWidth + getPaddingRight() - radius, mReachedProgressBarHeight - getPaddingBottom()); canvas.drawRoundRect(rectF, 25, 25, mPaint); } // 圆 if (mIfDrawCircle) { mPaint.setColor(mCircleColor); canvas.drawCircle(progressPosX, 0, radius, mPaint); } // 文本 if (mIfDrawText) { mPaint.setColor(mTextColor); canvas.drawText(text, progressPosX - textWidth / 2, -textHeight, mPaint); } canvas.restore(); } /** * dp 2 px */ protected int dp2px(int dpVal) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpVal, getResources().getDisplayMetrics()); } /** * sp 2 px */ protected int sp2px(int spVal) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, spVal, getResources().getDisplayMetrics()); }}
使用
在布局文件中加入：
<com.fun.progressbarwithnumber.HorizontalProgressBarWithNumber android:id="@+id/hpbwn" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="10dp" fun:progress_circle_color="#ff000000" fun:progress_reached_bar_height="20dp" fun:progress_reached_color="#FFFF4081" fun:progress_text_color="#ffffffff" fun:progress_text_size="14sp" fun:progress_unreached_bar_height="20dp" fun:progress_unreached_color="#ffBCB4E8" />
progress_reached_bar_height：当前进度的高度 progress_unreached_bar_height：剩余进度的高度 progress_text_size：圆圈内文字的大小
注意：
当前进度和剩余进度的高度要一致，圆圈大小和圆圈内文字的大小要配合Java代码调整。
项目源码：ProgressBarWithNumber_jb51.rar
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
那么，不如我们礼貌地保持相对距离，不至于太冷，不至于太痛。
