源代码 RecordView.java

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.View;
/*** Copyright (C), 2015/6/12, flyzhang* Author: flyzhang* Date: 2019/9/27 8:34* Description:* <p>* </p>* History:* <author>      <time>      <version>      <desc>* 作者姓名       修改时间     版本号         描述*/
public class RecordView extends View {private int mImageW = 42;//新mic图片宽private int mImageH = 42;//新mic图片高private int mMarginTop = 25, mTextMarginBottom = 11;//mic图片居上距离 文字居底部距离private int SCREEN_HEIGHT = 0, SCREEN_WIDTH = 0;//屏幕宽高private Paint mImagePaint, mTextPaint, mVoiceRectPaint, mBackgroundPaint;//mic 文字 进度条 背景private int mVoiceRectW = 1, mVoiceRectH = 10, mInterval = 3, mVoiceRectMarginTop = 83; //宽、高、间隔、进度条居上距离private int mTextSize = 12;//文本字体大小private Bitmap mVoiceRecording;//mic图片private int mVoiceRectStart = 0, mDescriptionW = 0;//进度条开始左边位置、文字长度private Rect mTextRect;//计算文字长度矩形private String mDescription = "松开停止";private int mCurrentPosition = 0;//当前位置private int mBackgroundRound = 3;//背景圆角private final int COUNT = 16;//进度条格数public RecordView(Context context) {super(context);init();}public RecordView(Context context, @Nullable AttributeSet attrs) {super(context, attrs);init();}private void init() {DisplayMetrics dm = getResources().getDisplayMetrics();mImageW = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mImageW, dm);mImageH = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mImageH, dm);mMarginTop = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mMarginTop, dm);mTextSize = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mTextSize, dm);mTextMarginBottom = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mTextMarginBottom, dm);mVoiceRectW = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mVoiceRectW, dm);mVoiceRectH = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mVoiceRectH, dm);mInterval = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mInterval, dm);mVoiceRectMarginTop = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mVoiceRectMarginTop, dm);mBackgroundRound = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mBackgroundRound, dm);mImagePaint = new Paint();mVoiceRectPaint = new Paint();mVoiceRectPaint.setColor(Color.WHITE);mBackgroundPaint = new Paint();mBackgroundPaint.setColor(Color.parseColor("#B3000000"));//背景颜色mTextPaint = new Paint();mTextPaint.setTextSize(mTextSize);mTextPaint.setColor(Color.parseColor("#B3FFFFFF"));//文字颜色mVoiceRecording = BitmapFactory.decodeResource(getResources(), R.drawable.voice_recording);mVoiceRecording = scaleBitmap(mVoiceRecording, mImageW, mImageH);mTextRect = new Rect();setWillNotDraw(false);}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);if (SCREEN_HEIGHT == 0 || SCREEN_WIDTH == 0) {SCREEN_HEIGHT = getHeight();SCREEN_WIDTH = getWidth();}if (mVoiceRectStart <= 0) {mVoiceRectStart = SCREEN_WIDTH / 2 - (COUNT * mVoiceRectW + (COUNT - 1) * mInterval) / 2;}if (mDescriptionW <= 0) {mTextPaint.getTextBounds(mDescription, 0, mDescription.length(), mTextRect);mDescriptionW = mTextRect.width();}canvas.drawRoundRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, mBackgroundRound, mBackgroundRound, mBackgroundPaint);//画灰色背景和圆角canvas.drawBitmap(mVoiceRecording, SCREEN_WIDTH / 2 - mVoiceRecording.getWidth() / 2, mMarginTop, mImagePaint);//画mic图片//画前几个是白色 后几个是灰色for (int i = 0; i < COUNT; i++) {if (i < mCurrentPosition) {mVoiceRectPaint.setColor(Color.WHITE);} else {mVoiceRectPaint.setColor(Color.parseColor("#73FFFFFF"));}canvas.drawRect(i * mVoiceRectW + (i * mInterval) + mVoiceRectStart, mVoiceRectMarginTop, i * mVoiceRectW + (i * mInterval) + mVoiceRectW + mVoiceRectStart, mVoiceRectMarginTop + mVoiceRectH, mVoiceRectPaint);}canvas.drawText(mDescription, SCREEN_WIDTH / 2 - mDescriptionW / 2, SCREEN_HEIGHT - mTextMarginBottom, mTextPaint);//画文字 松开停止}/*** [0 - 16)** @param p [0 - 16)*/public void setIndex(int p) {if(p < 0 ){p = 0;}if(p >= COUNT){p = COUNT -1 ;}mCurrentPosition = p;postInvalidate();}/*** 设置 百分比* @param percent 100%*/public void setIndex(double percent){int p = (int) (COUNT * percent);setIndex(p);}/*** bitmap 缩放** @param origin    源* @param newWidth  宽* @param newHeight 高* @return bitmap*/private Bitmap scaleBitmap(Bitmap origin, int newWidth, int newHeight) {if (origin == null) {return null;}int height = origin.getHeight();int width = origin.getWidth();float scaleWidth = ((float) newWidth) / width;float scaleHeight = ((float) newHeight) / height;Matrix matrix = new Matrix();matrix.postScale(scaleWidth, scaleHeight);// 使用后乘Bitmap newBM = Bitmap.createBitmap(origin, 0, 0, width, height, matrix, false);if (!origin.isRecycled()) {origin.recycle();}return newBM;}
}

        final RecordView recordView = findViewById(R.id.recordView);new Thread(new Runnable() {@Overridepublic void run() {while (true) {Random r = new Random();double a = (r.nextInt(100) + 1) * 0.01;recordView.setIndex(a);try {Thread.sleep(200);} catch (InterruptedException e) {e.printStackTrace();}}}}).start();

R.drawable.voice_recording

![图自行下载](https://img-blog.csdnimg.cn/20190927142314605.png)

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源代码 RecordView.java

R.drawable.voice_recording

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