Android音视频剪辑器自定义View实战！

Android音视频剪辑器自定义View实战！ - 掘金

/*** Created by zhouxuming on 2023/3/30** @descr 音视频剪辑器*/
public class AudioViewEditor extends View {//进度文本显示格式-数字格式public static final int HINT_FORMAT_NUMBER = 0;//进度文本显示格式-时间格式public static final int HINT_FORMAT_TIME = 1;private final Paint mPaint = new Paint();//空间最小宽度private final int MIN_WIDTH = 200;private final float playControlLeft = 10; //播控实际左边界private final float playControlRight = 80; //播控实际右边界//滑块bitmapprivate Bitmap mThumbImage;//progress bar 选中背景
//    private Bitmap mProgressBarSelBg;private Bitmap mMaxThumbImage;private Bitmap mMinThumbImage;//progress bar 背景private Bitmap mProgressBarBg;private float mThumbWidth;private float mThumbHalfWidth; //触摸响应宽度的一半private float mThumbHalfHeight;//seekbar 进度条高度private float mProgressBarHeight;//宽度左右paddingprivate float mWidthPadding;//最小值（绝对）private float mAbsoluteMinValue;//最大值（绝对）private float mAbsoluteMaxValue;//已选标准（占滑动条百分比）最小值private double mPercentSelectedMinValue = 0d;//已选标准（占滑动条百分比）最大值private double mPercentSelectedMaxValue = 1d;//当前事件处理的thumb滑块private Thumb mPressedThumb = null;//滑块事件private ThumbListener mThumbListener;private RectF mProgressBarRect;private RectF mProgressBarSelRect;//是否可以滑动private boolean mIsEnable = true;//最大值和最小值之间要求的最小范围绝对值private float mBetweenAbsoluteValue;//文字格式private int mProgressTextFormat;//文本高度private int mWordHeight;//文本字体大小private float mWordSize;private float mStartMinPercent;private float mStartMaxPercent;private boolean fixedMode; //固定模式private Paint cursorPaint;private Paint borderPaint;//播控按钮部分逻辑private Paint playControlPaint;private boolean isPlay = true; //播控状态private Bitmap playResumeBitmap;private Bitmap playPauseBitmap;private PlayerControlListener playerControlListener;private float cur;// 光标坐标private float pre;// 100 份每一份的偏移量private float min;//起始坐标private float max;//最大坐标private boolean isFirst = true;public AudioViewEditor(Context context) {super(context);}public AudioViewEditor(Context context, AttributeSet attrs) {super(context, attrs);TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.AudioViewEditor, 0, 0);mAbsoluteMinValue = a.getFloat(R.styleable.AudioViewEditor_absoluteMin, (float) 0.0);mAbsoluteMaxValue = a.getFloat(R.styleable.AudioViewEditor_absolutemMax, (float) 100.0);mStartMinPercent = a.getFloat(R.styleable.AudioViewEditor_startMinPercent, 0);mStartMaxPercent = a.getFloat(R.styleable.AudioViewEditor_startMaxPercent, 1);mThumbImage = BitmapFactory.decodeResource(getResources(), a.getResourceId(R.styleable.AudioViewEditor_thumbImage, R.drawable.drag_left_bar));mMaxThumbImage = BitmapFactory.decodeResource(getResources(), R.drawable.drag_right_bar);mProgressBarBg = BitmapFactory.decodeResource(getResources(), a.getResourceId(R.styleable.AudioViewEditor_progressBarBg, R.drawable.seekbar_bg));playPauseBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.play_control_pause);playResumeBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.play_control_resume);//        mProgressBarSelBg = BitmapFactory.decodeResource(getResources(), a.getResourceId(R.styleable.CustomRangeSeekBar_progressBarSelBg, R.mipmap.seekbar_sel_bg));mBetweenAbsoluteValue = a.getFloat(R.styleable.AudioViewEditor_betweenAbsoluteValue, 0);mProgressTextFormat = a.getInt(R.styleable.AudioViewEditor_progressTextFormat, HINT_FORMAT_NUMBER);mWordSize = a.getDimension(R.styleable.AudioViewEditor_progressTextSize, dp2px(context, 16));mPaint.setTextSize(mWordSize);mThumbWidth = mThumbImage.getWidth();mThumbHalfWidth = 0.5f * mThumbWidth;mThumbHalfHeight = 0.5f * mThumbImage.getHeight();
//        mProgressBarHeight = 0.3f * mThumbHalfHeight;mProgressBarHeight = mThumbImage.getHeight();//TOOD 提供定义attrmWidthPadding = mThumbHalfHeight;mWidthPadding += playControlRight;//为了加左右侧播控按钮, 特地添加出来的空间Paint.FontMetrics metrics = mPaint.getFontMetrics();mWordHeight = (int) (metrics.descent - metrics.ascent);/*光标*/cursorPaint = new Paint();cursorPaint.setAntiAlias(true);cursorPaint.setColor(Color.WHITE);borderPaint = new Paint();borderPaint.setAntiAlias(true);borderPaint.setColor(Color.parseColor("#DBAE6A"));playControlPaint = new Paint();playControlPaint.setAntiAlias(true);playControlPaint.setColor(Color.parseColor("#1E1F21"));restorePercentSelectedMinValue();restorePercentSelectedMaxValue();a.recycle();}/*** 格式化毫秒->00:00*/private static String formatSecondTime(int millisecond) {if (millisecond == 0) {return "00:00";}int second = millisecond / 1000;int m = second / 60;int s = second % 60;if (m >= 60) {int hour = m / 60;int minute = m % 60;return hour + ":" + (minute > 9 ? minute : "0" + minute) + ":" + (s > 9 ? s : "0" + s);} else {return (m > 9 ? m : "0" + m) + ":" + (s > 9 ? s : "0" + s);}}/*** 将dip或dp值转换为px值，保证尺寸大小不变** @param dipValue （DisplayMetrics类中属性density）* @return*/public static int dp2px(Context context, float dipValue) {final float scale = context.getResources().getDisplayMetrics().density;return (int) (dipValue * scale + 0.5f);}/*** 还原min滑块到初始值*/public void restorePercentSelectedMinValue() {setPercentSelectedMinValue(mStartMinPercent);}/*** 还原max滑块到初始值*/public void restorePercentSelectedMaxValue() {setPercentSelectedMaxValue(mStartMaxPercent);}@Overrideprotected void onSizeChanged(int w, int h, int oldw, int oldh) {super.onSizeChanged(w, h, oldw, oldh);mProgressBarRect = new RectF(mWidthPadding, mWordHeight + 0.5f * (h - mWordHeight - mProgressBarHeight),w - mWidthPadding, mWordHeight + 0.5f * (h - mWordHeight + mProgressBarHeight));mProgressBarSelRect = new RectF(mProgressBarRect);}/*** 设置seekbar 是否接收事件** @param enabled*/@Overridepublic void setEnabled(boolean enabled) {super.setEnabled(enabled);this.mIsEnable = enabled;}/*** 返回被选择的最小值(绝对值)** @return The currently selected min value.*/public float getSelectedAbsoluteMinValue() {return percentToAbsoluteValue(mPercentSelectedMinValue);}/*** 设置被选择的最小值（绝对值）** @param value 最小值的绝对值*              return 如果最小值与最大值的最小间距达到阈值返回false,正常返回true*/public boolean setSelectedAbsoluteMinValue(float value) {boolean status = true;if (0 == (mAbsoluteMaxValue - mAbsoluteMinValue)) {setPercentSelectedMinValue(0d);} else {float maxValue = percentToAbsoluteValue(mPercentSelectedMaxValue);if (mBetweenAbsoluteValue > 0 && maxValue - value <= mBetweenAbsoluteValue) {value = new Float(maxValue - mBetweenAbsoluteValue);status = false;}if (maxValue - value <= 0) {status = false;value = maxValue;}setPercentSelectedMinValue(absoluteValueToPercent(value));}return status;}public float getAbsoluteMaxValue() {return mAbsoluteMaxValue;}public void setAbsoluteMaxValue(double maxvalue) {this.mAbsoluteMaxValue = new Float(maxvalue);}/*** 返回被选择的最大值（绝对值）.*/public float getSelectedAbsoluteMaxValue() {return percentToAbsoluteValue(mPercentSelectedMaxValue);}/*** 设置被选择的最大值（绝对值）** @param value*/public boolean setSelectedAbsoluteMaxValue(float value) {boolean status = true;if (0 == (mAbsoluteMaxValue - mAbsoluteMinValue)) {setPercentSelectedMaxValue(1d);} else {float minValue = percentToAbsoluteValue(mPercentSelectedMinValue);if (mBetweenAbsoluteValue > 0 && value - minValue <= mBetweenAbsoluteValue) {value = new Float(minValue + mBetweenAbsoluteValue);status = false;}if (value - minValue <= 0) {status = false;value = minValue;}setPercentSelectedMaxValue(absoluteValueToPercent(value));}return status;}@Overridepublic boolean onTouchEvent(MotionEvent event) {if (!mIsEnable)return true;switch (event.getAction()) {case MotionEvent.ACTION_DOWN:if (isTouchPlayControl(event.getX())) {isPlay = !isPlay;playerControlListener.onPlayerControl(isPlay);invalidate();return true;}if (mPressedThumb == null && isInCursorRange(event.getX(), cur)) {
//                    if (mThumbListener != null){
//                        mThumbListener.onCursor(cur);
//                    }} else {mPressedThumb = evalPressedThumb(event.getX());if (Thumb.MIN.equals(mPressedThumb)) {if (mThumbListener != null)mThumbListener.onClickMinThumb(getSelectedAbsoluteMaxValue(), getSelectedAbsoluteMinValue());}if (Thumb.MAX.equals(mPressedThumb)) {if (mThumbListener != null)mThumbListener.onClickMaxThumb();}}invalidate();//Intercept parent TouchEventif (getParent() != null) {getParent().requestDisallowInterceptTouchEvent(true);}break;case MotionEvent.ACTION_MOVE:if (mPressedThumb == null && isInCursorRange(event.getX(), cur)) {isMoving = true;float eventX = event.getX();if (eventX >= percentToScreen(mPercentSelectedMaxValue)) {eventX = percentToScreen(mPercentSelectedMaxValue);} else if (eventX <= percentToScreen(mPercentSelectedMinValue)) {eventX = percentToScreen(mPercentSelectedMinValue);}cur = eventX;if (mThumbListener != null) {mThumbListener.onCursorMove(percentToAbsoluteValue(screenToPercent(cur)));}invalidate();} else if (mPressedThumb != null) {float eventX = event.getX();float maxValue = percentToAbsoluteValue(mPercentSelectedMaxValue);float minValue = percentToAbsoluteValue(mPercentSelectedMinValue);float eventValue = percentToAbsoluteValue(screenToPercent(eventX));if (Thumb.MIN.equals(mPressedThumb)) {minValue = eventValue;if (mBetweenAbsoluteValue > 0 && maxValue - minValue <= mBetweenAbsoluteValue) {minValue = new Float((maxValue - mBetweenAbsoluteValue));}
//                        setPercentSelectedMinValue(screenToPercent(event.getX()));if (isFixedMode()) {mPercentSelectedMaxValue = Math.max(0d, Math.min(1d, Math.max(absoluteValueToPercent(eventValue + (maxValue - minValue)), mPercentSelectedMinValue)));}if (cur <= percentToScreen(mPercentSelectedMinValue)) {//防止光标静态越界cur = percentToScreen(mPercentSelectedMinValue);}setPercentSelectedMinValue(absoluteValueToPercent(minValue));if (mThumbListener != null)mThumbListener.onMinMove(getSelectedAbsoluteMaxValue(), getSelectedAbsoluteMinValue());} else if (Thumb.MAX.equals(mPressedThumb)) {maxValue = eventValue;if (mBetweenAbsoluteValue > 0 && maxValue - minValue <= mBetweenAbsoluteValue) {maxValue = new Float(minValue + mBetweenAbsoluteValue);}
//                        setPercentSelectedMaxValue(screenToPercent(event.getX()));if (isFixedMode()) {mPercentSelectedMinValue = Math.max(0d, Math.min(1d, Math.min(absoluteValueToPercent(eventValue - (maxValue - minValue)), mPercentSelectedMaxValue)));}if (cur >= percentToScreen(mPercentSelectedMaxValue)) {//防止光标静态越界cur = percentToScreen(mPercentSelectedMaxValue);}setPercentSelectedMaxValue(absoluteValueToPercent(maxValue));if (mThumbListener != null)mThumbListener.onMaxMove(getSelectedAbsoluteMaxValue(), getSelectedAbsoluteMinValue());}}//Intercept parent TouchEventif (getParent() != null) {getParent().requestDisallowInterceptTouchEvent(true);}break;case MotionEvent.ACTION_UP:if (isMoving) {if (mThumbListener != null) {mThumbListener.onCursorUp(percentToAbsoluteValue(screenToPercent(cur)));}isMoving = false;}if (Thumb.MIN.equals(mPressedThumb)) {if (mThumbListener != null)mThumbListener.onUpMinThumb(getSelectedAbsoluteMaxValue(), getSelectedAbsoluteMinValue());}if (Thumb.MAX.equals(mPressedThumb)) {if (mThumbListener != null)mThumbListener.onUpMaxThumb(getSelectedAbsoluteMaxValue(), getSelectedAbsoluteMinValue());}//Intercept parent TouchEventif (getParent() != null) {getParent().requestDisallowInterceptTouchEvent(true);}break;case MotionEvent.ACTION_CANCEL:if (Thumb.MIN.equals(mPressedThumb)) {if (mThumbListener != null)mThumbListener.onUpMinThumb(getSelectedAbsoluteMaxValue(), getSelectedAbsoluteMinValue());}if (Thumb.MAX.equals(mPressedThumb)) {if (mThumbListener != null)mThumbListener.onUpMaxThumb(getSelectedAbsoluteMaxValue(), getSelectedAbsoluteMinValue());}mPressedThumb = null;//Intercept parent TouchEventif (getParent() != null) {getParent().requestDisallowInterceptTouchEvent(true);}break;}return true;}private boolean isTouchPlayControl(float eventX) {if (eventX > playControlLeft && eventX < playControlRight) {return true;}return false;}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {int width = MIN_WIDTH;if (MeasureSpec.UNSPECIFIED != MeasureSpec.getMode(widthMeasureSpec)) {width = MeasureSpec.getSize(widthMeasureSpec);}int height = mThumbImage.getHeight() + mWordHeight * 2;if (MeasureSpec.UNSPECIFIED != MeasureSpec.getMode(heightMeasureSpec)) {height = Math.min(height, MeasureSpec.getSize(heightMeasureSpec));}setMeasuredDimension(width, height);}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);// draw seek bar background linemPaint.setStyle(Paint.Style.FILL);drawPlayControl(canvas);canvas.drawBitmap(mProgressBarBg, null, mProgressBarRect, mPaint);// draw seek bar active range linemProgressBarSelRect.left = percentToScreen(mPercentSelectedMinValue);mProgressBarSelRect.right = percentToScreen(mPercentSelectedMaxValue);//canvas.drawBitmap(mProgressBarSelBg, mWidthPadding, 0.5f * (getHeight() - mProgressBarHeight), mPaint);//        canvas.drawBitmap(mProgressBarSelBg, null, mProgressBarSelRect, mPaint); //原中部选中进度// draw minimum thumbdrawThumb(percentToScreen(mPercentSelectedMinValue), Thumb.MIN.equals(mPressedThumb), canvas, false);// draw maximum thumbdrawThumb(percentToScreen(mPercentSelectedMaxValue), Thumb.MAX.equals(mPressedThumb), canvas, true);mPaint.setColor(Color.rgb(255, 165, 0));mPaint.setAntiAlias(true);
//        mPaint.setTextSize(DensityUtils.dp2px(getContext(), 16));drawThumbMinText(percentToScreen(mPercentSelectedMinValue), getSelectedAbsoluteMinValue(), canvas);drawThumbMaxText(percentToScreen(mPercentSelectedMaxValue), getSelectedAbsoluteMaxValue(), canvas);drawBorder(canvas);drawCursor(canvas);}private void drawPlayControl(Canvas canvas) {canvas.drawRoundRect(playControlLeft, mProgressBarRect.top, playControlRight + mThumbWidth + mThumbHalfWidth, mProgressBarRect.bottom, 5, 5, playControlPaint);Bitmap targetBitmap = isPlay ? playPauseBitmap : playResumeBitmap;//x轴距离未计算准确 y轴正确canvas.drawBitmap(targetBitmap, (playControlLeft + (playControlRight - playControlLeft) / 2) - mThumbHalfWidth + (targetBitmap.getWidth() >> 1), mProgressBarRect.top + (mProgressBarRect.bottom - mProgressBarRect.top) / 2 - (targetBitmap.getHeight() >> 1), playControlPaint);}private void drawBorder(Canvas canvas) {//topfloat borderLeft = mProgressBarSelRect.left;float borderRight = mProgressBarSelRect.right;canvas.drawRect(borderLeft - 1, mProgressBarRect.top, borderRight + 1, mProgressBarRect.top + 10, borderPaint);//bottomcanvas.drawRect(borderLeft - 1, mProgressBarRect.bottom, borderRight + 1, mProgressBarRect.bottom - 10, borderPaint);}private void drawCursor(Canvas canvas) {min = percentToScreen(mPercentSelectedMinValue);//开始坐标max = percentToScreen(mPercentSelectedMaxValue);//终点坐标pre = (getWidth() - 2 * mWidthPadding) / 1000; //每一份的坐标if (isFirst) {cur = min;isFirst = false;}canvas.drawRect(cur - 2, mProgressBarRect.top + 5, cur + 2, mProgressBarRect.bottom - 5, cursorPaint);}//启动播放线程检查 ptspublic void startMove() {new Thread(new Runnable() {@Overridepublic void run() {while (true) {if (isPlay) {long pts = playerCallback != null ? playerCallback.getCurrentPosition() : 0;updatePTS(pts);}try {Thread.sleep(30);} catch (InterruptedException e) {e.printStackTrace();}}}}).start();}/*** 根据播放器 pts 控制游标进度** @param pts*/public void updatePTS(float pts) {if (isMoving) {return;}if (pts > 0) {double v = absoluteValueToPercent(pts);cur = percentToScreen(v);if (cur >= max || cur < min) {cur = min;}invalidate();}}public boolean isPlay() {return isPlay;}public void setPlay(boolean play) {isPlay = play;}private boolean isMoving = false;@Overrideprotected Parcelable onSaveInstanceState() {Bundle bundle = new Bundle();bundle.putParcelable("SUPER", super.onSaveInstanceState());bundle.putDouble("MIN", mPercentSelectedMinValue);bundle.putDouble("MAX", mPercentSelectedMaxValue);return bundle;}@Overrideprotected void onRestoreInstanceState(Parcelable parcel) {Bundle bundle = (Bundle) parcel;super.onRestoreInstanceState(bundle.getParcelable("SUPER"));mPercentSelectedMinValue = bundle.getDouble("MIN");mPercentSelectedMaxValue = bundle.getDouble("MAX");}/*** Draws the "normal" resp. "pressed" thumb image on specified x-coordinate.** @param screenCoord The x-coordinate in screen space where to draw the image.* @param pressed     Is the thumb currently in "pressed" state?* @param canvas      The canvas to draw upon.*/private void drawThumb(float screenCoord, boolean pressed, Canvas canvas, boolean isMax) {//基准点 bar 居中位置
//        canvas.drawBitmap(isMax ? mMaxThumbImage : mThumbImage, screenCoord - mThumbHalfWidth, (mWordHeight + 0.5f * (getHeight() - mWordHeight) - mThumbHalfHeight), mPaint);//基准点顶两边位置canvas.drawBitmap(isMax ? mMaxThumbImage : mThumbImage, isMax ? screenCoord : screenCoord - mThumbHalfWidth * 2, (mWordHeight + 0.5f * (getHeight() - mWordHeight) - mThumbHalfHeight), mPaint);}/*** 画min滑块值text** @param screenCoord* @param value* @param canvas*/private void drawThumbMinText(float screenCoord, Number value, Canvas canvas) {String progress = getProgressStr(value.intValue());float progressWidth = mPaint.measureText(progress);canvas.drawText(progress, (screenCoord - progressWidth / 2) - mThumbHalfWidth, mWordSize, mPaint);}/*** 画max滑块值text** @param screenCoord* @param value* @param canvas*/private void drawThumbMaxText(float screenCoord, Number value, Canvas canvas) {String progress = getProgressStr(value.intValue());float progressWidth = mPaint.measureText(progress);canvas.drawText(progress, (screenCoord - progressWidth / 2) + mThumbHalfWidth, mWordSize, mPaint);}/*** 根据touchX, 判断是哪一个thumb(Min or Max)** @param touchX 触摸的x在屏幕中坐标（相对于容器）*/private Thumb evalPressedThumb(float touchX) {Thumb result = null;boolean minThumbPressed = isInThumbRange(touchX, mPercentSelectedMinValue, false);boolean maxThumbPressed = isInThumbRange(touchX, mPercentSelectedMaxValue, true);if (minThumbPressed && maxThumbPressed) {// if both thumbs are pressed (they lie on top of each other), choose the one with more room to drag. this avoids "stalling" the thumbs in a corner, not being able to drag them apart anymore.result = (touchX / getWidth() > 0.5f) ? Thumb.MIN : Thumb.MAX;} else if (minThumbPressed) {result = Thumb.MIN;} else if (maxThumbPressed) {result = Thumb.MAX;}return result;}/*** 判断touchX是否在滑块点击范围内** @param touchX            需要被检测的 屏幕中的x坐标（相对于容器）* @param percentThumbValue 需要检测的滑块x坐标百分比值（滑块x坐标）*/private boolean isInThumbRange(float touchX, double percentThumbValue, boolean isMax) {if (isMax) {return Math.abs(touchX - mThumbHalfWidth - percentToScreen(percentThumbValue)) <= mThumbHalfWidth;} else {return Math.abs(touchX + mThumbHalfWidth - percentToScreen(percentThumbValue)) <= mThumbHalfWidth;}
//        return Math.abs(touchX - percentToScreen(percentThumbValue)) <= mThumbHalfWidth; //居中基准时}/*** 判断用户是否触碰光标** @param touchX  需要被检测的 屏幕中的x坐标（相对于容器）* @param cursorX 光标x坐标（滑块x坐标）* @return*/private boolean isInCursorRange(float touchX, float cursorX) {return Math.abs(touchX - cursorX) <= mThumbHalfWidth;}/*** 设置已选择最小值的百分比值*/public void setPercentSelectedMinValue(double value) {mPercentSelectedMinValue = Math.max(0d, Math.min(1d, Math.min(value, mPercentSelectedMaxValue)));invalidate();}/*** 设置已选择最大值的百分比值*/public void setPercentSelectedMaxValue(double value) {mPercentSelectedMaxValue = Math.max(0d, Math.min(1d, Math.max(value, mPercentSelectedMinValue)));invalidate();}/*** 进度值，从百分比到绝对值** @return*/@SuppressWarnings("unchecked")private float percentToAbsoluteValue(double normalized) {return (float) (mAbsoluteMinValue + normalized * (mAbsoluteMaxValue - mAbsoluteMinValue));}/*** 进度值，从绝对值到百分比*/private double absoluteValueToPercent(float value) {if (0 == mAbsoluteMaxValue - mAbsoluteMinValue) {// prevent division by zero, simply return 0.return 0d;}return (value - mAbsoluteMinValue) / (mAbsoluteMaxValue - mAbsoluteMinValue);}/*** 进度值，从百分比值转换到屏幕中坐标值*/private float percentToScreen(double percentValue) {return (float) (mWidthPadding + percentValue * (getWidth() - 2 * mWidthPadding));}/*** 进度值，转换屏幕像素值到百分比值*/private double screenToPercent(float screenCoord) {int width = getWidth();if (width <= 2 * mWidthPadding) {// prevent division by zero, simply return 0.return 0d;} else {double result = (screenCoord - mWidthPadding) / (width - 2 * mWidthPadding);return Math.min(1d, Math.max(0d, result));}}public void setThumbListener(ThumbListener mThumbListener) {this.mThumbListener = mThumbListener;}private String getProgressStr(int progress) {String progressStr;if (mProgressTextFormat == HINT_FORMAT_TIME) {progressStr = formatSecondTime(progress);} else {progressStr = String.valueOf(progress);}return progressStr;}public boolean isFixedMode() {return fixedMode;}public void setFixedMode(boolean fixedMode) {this.fixedMode = fixedMode;}/*** 重置总时长-单位秒** @param totalSecond*/public void resetTotalSecond(int totalSecond) {if (totalSecond > 0 && totalSecond < 12000) {mAbsoluteMaxValue = totalSecond * 1000;mAbsoluteMinValue = 0.0f;mProgressTextFormat = HINT_FORMAT_TIME;invalidate();}}/*** 重置总时长-单位毫秒** @param totalMillisecond*/public void resetTotalMillisecond(float totalMillisecond) {if (totalMillisecond > 0 && totalMillisecond < 1200000) {mAbsoluteMaxValue = totalMillisecond;mAbsoluteMinValue = 0.0f;mProgressTextFormat = HINT_FORMAT_TIME;invalidate();}}public void setPlayerControlListener(PlayerControlListener playerControlListener) {this.playerControlListener = playerControlListener;}/*** Thumb枚举， 最大或最小*/private enum Thumb {MIN, MAX}public interface PlayerControlListener {void onPlayerControl(boolean isPlay);}/*** 游标以及滑块事件*/public interface ThumbListener {void onClickMinThumb(Number max, Number min);void onClickMaxThumb();void onUpMinThumb(Number max, Number min);void onUpMaxThumb(Number max, Number min);void onMinMove(Number max, Number min);void onMaxMove(Number max, Number min);void onCursorMove(Number cur);void onCursorUp(Number cur);}public interface IPlayerCallback {long getCurrentPosition();}private IPlayerCallback playerCallback = null;public void setPlayerCallback(IPlayerCallback playerCallback) {this.playerCallback = playerCallback;}public void release() {isPlay = false;}
}

 Android音视频剪辑器自定义View实战！ - 掘金话不多说，先上一个代码完成效果。 动图好像录成横屏的了，也没找到调整反转 GIF 的位置，下面再补一张设计稿静态图吧 最近这几年音视频应用越来越广泛，随之而来的音视频相关的需求也越来越多，音视频的剪辑https://juejin.cn/post/7236635197071802424?utm_source=gold_browser_extension#heading-10