android安卓仿苹果ios音量调节自定义view-自定义view系列-java黑洞网

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2024-11(2)

android安卓仿苹果ios音量调节自定义view-自定义view系列

发布于2021-05-29 22:23 阅读(1189) 评论(0) 点赞(3) 收藏(5)

仿IOS上下滑动控制调节音量组件

更多其他页面-自定义View-实用功能合集：点击查看
Github项目地址：点击跳转，欢迎fork收藏
仿IOS上下滑动亮度调节看这篇点击查看

功能简介

自绘制的仿ios的上下滑动改变音量大小组件

相关文章讲解:

在这里插入图片描述

主要实现步骤

1.定义一个音量比例mCurrentDrawLoudRate,该比例作为当前音量展示在view里的高度。view总高度为1，音量比例处于0 ~ 1 之间

2.通过onTouchEvent方法获取手指在view内部上下移动的距离并重新计算音量比例。mCurrentDrawLoudRate= （当前音量*view总高度 + 上下移动距离）/ view总高度
3.用音量比例去绘制圆柱体前景颜色高度,高度为 音量比例 * view总高度。难点在于如何绘制前景颜色贴合背景，可以看见白色区域是被灰色背景切割的，即使是圆弧的区域也是。这里用到了setXfermode方法，
4.画音量圆弧，使用canvas.drawArc方法进行绘制，注意绘制的角度要随着音量比例缩小或放大即可
5.详细步骤看代码，(完整代码可以看github项目)另外该view长宽已经写死，没有进行多余的适配

xml相关属性设置

属性名	介绍
iosColumnAudioView_setAudioStreamType	设置想要改变的声音模式
iosColumnAudioView_setColorBackground	圆柱体底部背景颜色
iosColumnAudioView_setColorLoud	圆柱体内部颜色，代表声音大小
iosColumnAudioView_setRadiusXY	圆柱体的圆弧
iosColumnAudioView_setTextSize	声音字体大小
iosColumnAudioView_setTextColor	声音字体颜色
iosColumnAudioView_setTextHeight	声音字体高度
iosColumnAudioView_setIsDrawTextVolume	是否绘制声音字体
iosColumnAudioView_setIsDrawDrawableVolume	是否绘制音量图标
iosColumnAudioView_setVolumeColor	音量图标颜色
iosColumnAudioView_setVolumeDrawable	静音时的音量图标drawable

java代码


/**
 * 作者：YFZ
 * 简介：仿ios风格的音量控制view
 * CSDN项目地址: https://blog.csdn.net/ruiruiddd/article/details/117280116
 * GITHUB项目地址: https://github.com/FENGZEYOU123/Android_IosAdjustView
 * Android技术生活-QQ交流群:723592501
 */
public class IosColumnAudioView extends View {
    private Context mContext;
    //日志TAG
    private static final String TAG = IosColumnAudioView.class.getName();
    //系统声音广播名
    private static final String VOLUME_CHANGED_ACTION = "android.media.VOLUME_CHANGED_ACTION";
    private static final String EXTRA_VOLUME_STREAM_TYPE = "android.media.EXTRA_VOLUME_STREAM_TYPE";
    //系统声音广播接收器
    private MyVolumeReceiver mVolumeReceiver = null;
    //标记-是否是当前自己在调整音量大小
    private boolean isMeAdjustVolume = true;
    //当前UI高度与view高度的比例
    private double mCurrentDrawLoudRate = 0;
    //当前真实音量与总音量大小比例
    private double mCurrentRealLoudRate = 0;
    //系统最大声音index
    private int mMaxLoud=0;
    //记录按压时手指相对于组件view的高度
    private float mDownY;
    //手指移动的距离，视为音量调整
    private float mMoveDistance;
    //系统audio管理
    private AudioManager mAudioManager;
    //当前音量文字数字
    private String mTextLoud ="";
    //画笔
    private Paint mPaint;
    //位置
    private RectF mRectF;
    //当前Canvas LayerId
    private int layerId = 0;
    //音量图标圆弧位置
    private RectF mRectVolumeArc =new RectF();
    //音量图标静音位置
    private Rect mRectVolumeDrawable=new Rect();
    //音量图标margin
    private int mRectVolumeDrawableMargin=10;
    //音量图标粗细
    private final static int mRectVolumeDrawableWidth=4;
    //音量图标开始角度
    private final static int mRectVolumeDrawableStartAngle=315;
    //音量图标终止角度
    private final static int mRectVolumeDrawableEndAngle=90;
    /**
     * 设置声音流类型-默认音乐-iosColumnAudioView_setAudioStreamType
     */
    private int mAudioManagerStreamType = AudioManager.STREAM_MUSIC;
    /**
     * 设置圆弧度数-xml-iosColumnAudioView_setRadiusXY
     */
    private float mRXY=40;
     /**
     * 设置当前音量颜色-xml-iosColumnAudioView_setColorLoud
     */
    private int mColorLoud = Color.parseColor("#ECECEC");
    /**
     * 设置组件背景颜色-xml-iosColumnAudioView_setColorBackground
     */
    private int mColorBackground = Color.parseColor("#898989");
    /**
     * 设置是否画音量文字-iosColumnAudioView_setIsDrawTextVolume
     * @param context
     */
    private boolean mIsDrawTextVolume = true;
    /**
     * 设置文字大小-xml-iosColumnAudioView_setTextSize
     */
    private float mTextSize = 15;
    /**
     * 设置文字颜色-xml-iosColumnAudioView_setTextColor
     */
    private int mTextColor = Color.BLACK;
    /**
     * 设置文字高度-xml-iosColumnAudioView_setTextHeight
     * @param context
     */
    private int mTextHeight = -1;
    /**
     * 设置是否画音量图标-iosColumnAudioView_setIsDrawDrawableVolume
     * @param context
     */
    private boolean mIsDrawDrawableVolume = true;
    /**
     * 设置音量圆弧颜色-xml-iosColumnAudioView_setColorVolume
     */
    private int mColorVolume = Color.DKGRAY;
    /**
     * 设置音量静音图标drawable-xml-iosColumnAudioView_setColorVolumeDrawable
     */
    private Drawable mColorDrawable = null;
    //固定组件高度长度，这里不做适配，可自行修改
    private int mViewHeight = 150, mViewWeight=50;

    public IosColumnAudioView(Context context) {
        super(context);
        initial(context);
    }

    public IosColumnAudioView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        mTextSize = sp2px(context,mTextSize);
        TypedArray typedArray=context.obtainStyledAttributes(attrs, R.styleable.IosColumnAudioView);
        mColorBackground = typedArray.getColor(R.styleable.IosColumnAudioView_iosColumnAudioView_setColorBackground,mColorBackground);
        mColorLoud = typedArray.getColor(R.styleable.IosColumnAudioView_iosColumnAudioView_setColorLoud,mColorLoud);
//        mAudioManagerStreamType =typedArray.getInteger(R.styleable.IosColumnAudioView_iosColumnAudioView_setAudioStreamType, mAudioManagerStreamType);
        mRXY = typedArray.getDimension(R.styleable.IosColumnAudioView_iosColumnAudioView_setRadiusXY, mRXY);
        mTextSize = typedArray.getDimension(R.styleable.IosColumnAudioView_iosColumnAudioView_setTextSize,mTextSize);
        mTextColor = typedArray.getColor(R.styleable.IosColumnAudioView_iosColumnAudioView_setTextColor,mTextColor);
        mTextHeight = typedArray.getInt(R.styleable.IosColumnAudioView_iosColumnAudioView_setTextHeight,mTextHeight);
        mIsDrawTextVolume = typedArray.getBoolean(R.styleable.IosColumnAudioView_iosColumnAudioView_setIsDrawTextVolume,mIsDrawTextVolume);
        mIsDrawDrawableVolume = typedArray.getBoolean(R.styleable.IosColumnAudioView_iosColumnAudioView_setIsDrawDrawableVolume,mIsDrawDrawableVolume);
        mColorVolume = typedArray.getColor(R.styleable.IosColumnAudioView_iosColumnAudioView_setVolumeColor, mColorVolume);
        mColorDrawable = typedArray.getDrawable(R.styleable.IosColumnAudioView_iosColumnAudioView_setVolumeDrawable);
        typedArray.recycle();
        initial(context);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        mRectVolumeDrawableMargin = MeasureSpec.getSize(widthMeasureSpec)/10;
        //固定组件高度长度，这里不做适配，可自行修改
        setMeasuredDimension(dp2px(mContext,mViewWeight),dp2px(mContext,mViewHeight));
    }

    private void initial(Context context){
        mContext=context;
        mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        mMaxLoud = mAudioManager.getStreamMaxVolume(mAudioManagerStreamType);
        mCurrentDrawLoudRate = getCalculateLoudRate();
        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        mPaint.setAntiAlias(true);
        mPaint.setDither(true);
        mRectF = new RectF();
        setWillNotDraw(false);
        setBackgroundColor(Color.TRANSPARENT);
        mPaint.setTextSize(mTextSize);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        switch (event.getAction()){
            case MotionEvent.ACTION_DOWN:
                mDownY=event.getY();
                isMeAdjustVolume=true;
                break;
            case MotionEvent.ACTION_MOVE:
                mMoveDistance = mDownY - event.getY();
                calculateLoudRate();
                mDownY=event.getY();
                break;
            case MotionEvent.ACTION_UP:
                isMeAdjustVolume=false;
                break;
            default:
                break;
        }
        refreshAll();
        return true;
    }

    /**
     * 更新所有内容-ui-音乐大小
     */
    private void refreshAll(){
        refreshStreamVolume(((int)(mCurrentDrawLoudRate * mMaxLoud))<= mMaxLoud? (int)(mCurrentDrawLoudRate * mMaxLoud) : mMaxLoud);
        refreshUI();
    }
    /**
     * 设置音量大小
     * @param currentVolume
     */
    public void refreshStreamVolume(int currentVolume){
        mAudioManager.setStreamVolume(mAudioManagerStreamType,currentVolume, 0);
    }
    /**
     * 刷新UI
     */
    public void refreshUI(){
        invalidate();
    }
    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        layerId = canvas.saveLayer(0, 0, canvas.getWidth(), canvas.getHeight(), null, Canvas.ALL_SAVE_FLAG);
        onDrawBackground(canvas); //画背景
        onDrawLoud(canvas); //画当前音量前景表示当前多大音量
        onDrawText(canvas); //画文字
        onDrawVolumeDrawable(canvas);//画底部音量图标
        canvas.restoreToCount(layerId);
    }
    /**
     * 计算手指移动后音量UI占比大小，视其为音量大小
     */
    private void calculateLoudRate(){
        mCurrentDrawLoudRate = ( getHeight() * mCurrentDrawLoudRate + mMoveDistance) /  getHeight();
        if(mCurrentDrawLoudRate >=1){
            mCurrentDrawLoudRate =1;
        }
        if(mCurrentDrawLoudRate <=0){
            mCurrentDrawLoudRate =0;
        }
    }
    /**
     * 画圆弧背景
     * @param canvas
     */
    private void onDrawBackground(Canvas canvas){
        mPaint.setStyle(Paint.Style.FILL);
        mPaint.setColor(mColorBackground );
        mRectF.left=0;
        mRectF.top=0;
        mRectF.right=canvas.getWidth();
        mRectF.bottom=canvas.getHeight();
        canvas.drawRoundRect(mRectF,mRXY,mRXY,mPaint);
    }
    /**
     * 画音量背景-方形-随手势上下滑动而变化用来显示音量大小
     * @param canvas
     */
    private void onDrawLoud(Canvas canvas){
        mPaint.setStyle(Paint.Style.FILL);
        mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_ATOP));
        mPaint.setColor(mColorLoud);
        mRectF.left=0;
        mRectF.top=(canvas.getHeight()-(int)(canvas.getHeight() * mCurrentDrawLoudRate));
        mRectF.right=canvas.getWidth();
        mRectF.bottom=canvas.getHeight();
        canvas.drawRect(mRectF,mPaint);
        mPaint.setXfermode(null);
    }
    /**
     * 画文字-展示当前语音大小
     * @param canvas
     */
    private void onDrawText(Canvas canvas){
        if(mIsDrawTextVolume) { //如果开启了则开始绘制
            mPaint.setStyle(Paint.Style.FILL);
            mTextLoud = "" + (int) (mCurrentDrawLoudRate * 100);
            mPaint.setColor(mTextColor);
            canvas.drawText(mTextLoud, (canvas.getWidth() / 2 - mPaint.measureText(mTextLoud) / 2), mTextHeight >= 0 ? mTextHeight : getHeight() / 6, mPaint);
        }
    }
    /**
     * 画音量图标
     */
    private void onDrawVolumeDrawable(Canvas canvas){
        if(mIsDrawDrawableVolume){ //如果开启了则开始绘制
            mPaint.setStyle(Paint.Style.STROKE);
            mPaint.setStrokeWidth(mRectVolumeDrawableWidth);
            mPaint.setColor(mColorVolume);
           if (getCalculateLoudRate()>0){ //如果当前实际系统音量>0，则绘圆弧，否则绘制静音图片
               onDrawVolumeDrawableArc(canvas); //画音量圆弧
           }else if (getCalculateLoudRate() == 0 && mColorDrawable != null){
               onDrawVolumeMutedDrawable(canvas);
           }
        }
    }

    /**
     * 画音量图片-静音drawable
     */
    private void onDrawVolumeMutedDrawable(Canvas canvas){

        mRectVolumeDrawable.left=mRectVolumeDrawableMargin * 3;
        mRectVolumeDrawable.right=canvas.getWidth()-mRectVolumeDrawableMargin * 3;
        mRectVolumeDrawable.bottom=(int)(canvas.getHeight()*0.9)-mRectVolumeDrawableMargin * 3;
        mRectVolumeDrawable.top= (int)(mRectVolumeDrawable.bottom-canvas.getWidth()+mRectVolumeDrawableMargin *2 *3);
        mColorDrawable.setBounds(mRectVolumeDrawable);
        mColorDrawable.draw(canvas);
    }
    /**
     * 画音量图标-圆弧-计算多少个，这里是展示4个
     */
    private void onDrawVolumeDrawableArc(Canvas canvas){
        for(int i = 0; i<=(int)(mCurrentDrawLoudRate /0.33); i++){
                onDrawVolumeDrawableArc(canvas,(int)(mCurrentDrawLoudRate /0.33)-i); //画圆弧
            }
    }

    /**
     * 画音量图标-圆弧
     */
    private void onDrawVolumeDrawableArc(Canvas canvas, int index){
        index=4-index;
        mRectVolumeArc.left=mRectVolumeDrawableMargin * index;
        mRectVolumeArc.right=canvas.getWidth()-mRectVolumeDrawableMargin * index;
        mRectVolumeArc.bottom=(int)(canvas.getHeight()*0.9)-mRectVolumeDrawableMargin * index;
        mRectVolumeArc.top= mRectVolumeArc.bottom-canvas.getWidth()+mRectVolumeDrawableMargin *2 *index;
        //画板偏移
        canvas.translate(-mRectVolumeDrawableMargin,0);
        //开始角度向 360度收缩，结束角度向0度收缩，这样就可以造成弧度随着音量扩大而扩大，缩小而缩小的感觉
        canvas.drawArc(
                mRectVolumeArc,
                (float) (mRectVolumeDrawableStartAngle + ( (360 - mRectVolumeDrawableStartAngle) * (1- mCurrentDrawLoudRate))),
                (float) (mRectVolumeDrawableEndAngle - ( (mRectVolumeDrawableEndAngle-0) * (1- mCurrentDrawLoudRate))),
                false,
                mPaint);

    }
    /**
     * 将sp值转换为px值，保证文字大小不变
     */
    public int sp2px(Context context, float spValue) {
        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (spValue * fontScale + 0.5f);
    }
    /**
     * 监听view视图在window里时，监听系统声音并注册广播
     */
    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        myRegisterReceiver(mContext);
    }
    /**
     * 监听view视图从window里抽离的时，取消广播的注册
     */
    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        unRegisterReceiver();//取消注册系统声音监听
    }
    /**
     * 注册音量广播-监听音量改变事件
     */
    private void myRegisterReceiver(Context context) {
        if(null != context) {
            mVolumeReceiver = new MyVolumeReceiver();
            IntentFilter intentFilter = new IntentFilter();
            intentFilter.addAction(VOLUME_CHANGED_ACTION);
            context.registerReceiver(mVolumeReceiver, intentFilter);
        }
    }
    /**
     * 取消广播
     */
    private void unRegisterReceiver(){
        if(mVolumeReceiver!=null) {
            mContext.unregisterReceiver(mVolumeReceiver);
        }
    }
    /**
     * 继承广播接受者
     */
    private class MyVolumeReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
         if (intent.getAction().equals(VOLUME_CHANGED_ACTION)){
             if(intent.getIntExtra(EXTRA_VOLUME_STREAM_TYPE, -1) == mAudioManagerStreamType){
                 if(!isMeAdjustVolume) {
                     mCurrentDrawLoudRate = getCalculateLoudRate();
                     refreshUI();
                 }
             }
           }
        }
    }
    /**
     * 计算音量比例
     */
    private double getCalculateLoudRate(){
        return (double) mAudioManager.getStreamVolume(mAudioManagerStreamType)/ mMaxLoud;
    }
    /**
     * 根据手机的分辨率从 dp 的单位 转成为 px(像素)
     */
    public static int dp2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }
}