android 摇杆控件实现RockerView

我是在下面两个源码的基础上进行的修改。

如果需要使用可以先看看下面两个代码是否能够满足要求如果可以满足优先使用下面两个。我改动是因为我需要一个方向和级别同时返回的回调而已，所以修改了一下。

RockerView: 虚拟摇杆实现方向：两个方向、四个方向、八个方向（集成好，可选）实现距离：自定义分级，摇杆剧中心的距离（XML可设置）实现触发方式：状态改变和移动

AndroidRocker: Android 摇杆

首先实现一个RockView类

package com.example.myesptest.RockView;import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;import com.example.myesptest.R;public class RockerView extends View {private static final int DEFAULT_SIZE = 400;private static final float DEFAULT_ROCKER_SCALE = 0.5f;//默认半径为背景的1/2private final Paint mAreaBackgroundPaint;private final Paint mRockerPaint;private Point mRockerPosition;private final Point mCenterPoint;private int mAreaRadius;private float mRockerScale;private int mRockerRadius;private CallBackMode mCallBackMode = CallBackMode.CALL_BACK_MODE_MOVE;private OnAngleChangeListener mOnAngleChangeListener;private OnShakeListener mOnShakeListener;private OnDistanceLevelListener mOnDistanceLevelListener;private OnShakeAngleDistanceLevelListener mOnShakeAngleDistanceLevelListener;private DirectionMode mDirectionMode = DirectionMode.DIRECTION_8;private Direction tempDirection = Direction.DIRECTION_CENTER;private Direction temp1Direction = Direction.DIRECTION_CENTER;private float last1Level = 0;private double last1Angle = 0;private float lastDistance = 0;private double lastAngle = 0;private float baseDistance = 0;private int mDistanceLevel = 10;//分成10分// 角度private static final double ANGLE_0 = 0;private static final double ANGLE_360 = 360;// 360°水平方向平分2份的边缘角度private static final double ANGLE_HORIZONTAL_2D_OF_0P = 90;private static final double ANGLE_HORIZONTAL_2D_OF_1P = 270;// 360°垂直方向平分2份的边缘角度private static final double ANGLE_VERTICAL_2D_OF_0P = 0;private static final double ANGLE_VERTICAL_2D_OF_1P = 180;// 360°平分4份的边缘角度private static final double ANGLE_4D_OF_0P = 0;private static final double ANGLE_4D_OF_1P = 90;private static final double ANGLE_4D_OF_2P = 180;private static final double ANGLE_4D_OF_3P = 270;// 360°平分4份的边缘角度(旋转45度)private static final double ANGLE_ROTATE45_4D_OF_0P = 45;private static final double ANGLE_ROTATE45_4D_OF_1P = 135;private static final double ANGLE_ROTATE45_4D_OF_2P = 225;private static final double ANGLE_ROTATE45_4D_OF_3P = 315;// 360°平分8份的边缘角度private static final double ANGLE_8D_OF_0P = 22.5;private static final double ANGLE_8D_OF_1P = 67.5;private static final double ANGLE_8D_OF_2P = 112.5;private static final double ANGLE_8D_OF_3P = 157.5;private static final double ANGLE_8D_OF_4P = 202.5;private static final double ANGLE_8D_OF_5P = 247.5;private static final double ANGLE_8D_OF_6P = 292.5;private static final double ANGLE_8D_OF_7P = 337.5;// 摇杆可移动区域背景private static final int AREA_BACKGROUND_MODE_PIC = 0;private static final int AREA_BACKGROUND_MODE_COLOR = 1;private static final int AREA_BACKGROUND_MODE_XML = 2;private static final int AREA_BACKGROUND_MODE_DEFAULT = 3;private int mAreaBackgroundMode = AREA_BACKGROUND_MODE_DEFAULT;private Bitmap mAreaBitmap;private int mAreaColor;// 摇杆背景private static final int ROCKER_BACKGROUND_MODE_PIC = 4;private static final int ROCKER_BACKGROUND_MODE_COLOR = 5;private static final int ROCKER_BACKGROUND_MODE_XML = 6;private static final int ROCKER_BACKGROUND_MODE_DEFAULT = 7;private int mRockerBackgroundMode = ROCKER_BACKGROUND_MODE_DEFAULT;private Bitmap mRockerBitmap;private int mRockerColor;public RockerView(Context context, AttributeSet attrs) {super(context, attrs);// 获取自定义属性initAttribute(context, attrs);// 移动区域画笔mAreaBackgroundPaint = new Paint();mAreaBackgroundPaint.setAntiAlias(true);// 摇杆画笔mRockerPaint = new Paint();mRockerPaint.setAntiAlias(true);// 中心点mCenterPoint = new Point();// 摇杆位置mRockerPosition = new Point();}/*** 获取属性** @param context context* @param attrs   attrs*/private void initAttribute(Context context, AttributeSet attrs) {TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RockerView);// 可移动区域背景Drawable areaBackground = typedArray.getDrawable(R.styleable.RockerView_areaBackground);if (null != areaBackground) {// 设置了背景if (areaBackground instanceof BitmapDrawable) {// 设置了一张图片mAreaBitmap = ((BitmapDrawable) areaBackground).getBitmap();mAreaBackgroundMode = AREA_BACKGROUND_MODE_PIC;} else if (areaBackground instanceof GradientDrawable) {// XMLmAreaBitmap = drawable2Bitmap(areaBackground);mAreaBackgroundMode = AREA_BACKGROUND_MODE_XML;} else if (areaBackground instanceof ColorDrawable) {// 色值mAreaColor = ((ColorDrawable) areaBackground).getColor();mAreaBackgroundMode = AREA_BACKGROUND_MODE_COLOR;} else {// 其他形式mAreaBackgroundMode = AREA_BACKGROUND_MODE_DEFAULT;}} else {// 没有设置背景mAreaBackgroundMode = AREA_BACKGROUND_MODE_DEFAULT;}// 摇杆背景Drawable rockerBackground = typedArray.getDrawable(R.styleable.RockerView_rockerBackground);if (null != rockerBackground) {// 设置了摇杆背景if (rockerBackground instanceof BitmapDrawable) {// 图片mRockerBitmap = ((BitmapDrawable) rockerBackground).getBitmap();mRockerBackgroundMode = ROCKER_BACKGROUND_MODE_PIC;} else if (rockerBackground instanceof GradientDrawable) {// XMLmRockerBitmap = drawable2Bitmap(rockerBackground);mRockerBackgroundMode = ROCKER_BACKGROUND_MODE_XML;} else if (rockerBackground instanceof ColorDrawable) {// 色值mRockerColor = ((ColorDrawable) rockerBackground).getColor();mRockerBackgroundMode = ROCKER_BACKGROUND_MODE_COLOR;} else {// 其他形式mRockerBackgroundMode = ROCKER_BACKGROUND_MODE_DEFAULT;}} else {// 没有设置摇杆背景mRockerBackgroundMode = ROCKER_BACKGROUND_MODE_DEFAULT;}// 摇杆半径mRockerScale = typedArray.getFloat(R.styleable.RockerView_rockerScale, DEFAULT_ROCKER_SCALE);//距离级别mDistanceLevel = typedArray.getInt(R.styleable.RockerView_rockerSpeedLevel, 10);//回调模式mCallBackMode = getCallBackMode(typedArray.getInt(R.styleable.RockerView_rockerCallBackMode, 0));typedArray.recycle();}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {int measureWidth, measureHeight;int widthMode = MeasureSpec.getMode(widthMeasureSpec);int heightMode = MeasureSpec.getMode(heightMeasureSpec);int widthSize = MeasureSpec.getSize(widthMeasureSpec);int heightSize = MeasureSpec.getSize(heightMeasureSpec);if (widthMode == MeasureSpec.EXACTLY) {// 具体的值和match_parentmeasureWidth = widthSize;} else {// wrap_contentmeasureWidth = DEFAULT_SIZE;}if (heightMode == MeasureSpec.EXACTLY) {measureHeight = heightSize;} else {measureHeight = DEFAULT_SIZE;}setMeasuredDimension(measureWidth, measureHeight);}Rect src = new Rect();Rect dst = new Rect();@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);int measuredWidth = getMeasuredWidth();int measuredHeight = getMeasuredHeight();int cx = measuredWidth / 2;int cy = measuredHeight / 2;// 中心点mCenterPoint.set(cx, cy);// 可移动区域的半径mAreaRadius = (measuredWidth <= measuredHeight) ? (int) (cx / (mRockerScale + 1)) : (int) (cy / (mRockerScale + 1));mRockerRadius = (int) (mAreaRadius * mRockerScale);// 摇杆位置if (0 == mRockerPosition.x || 0 == mRockerPosition.y) {mRockerPosition.set(mCenterPoint.x, mCenterPoint.y);}// 画可移动区域if (AREA_BACKGROUND_MODE_PIC == mAreaBackgroundMode || AREA_BACKGROUND_MODE_XML == mAreaBackgroundMode) {// 图片src.set(0, 0, mAreaBitmap.getWidth(), mAreaBitmap.getHeight());dst.set(mCenterPoint.x - mAreaRadius, mCenterPoint.y - mAreaRadius, mCenterPoint.x + mAreaRadius, mCenterPoint.y + mAreaRadius);canvas.drawBitmap(mAreaBitmap, src, dst, mAreaBackgroundPaint);} else if (AREA_BACKGROUND_MODE_COLOR == mAreaBackgroundMode) {// 色值mAreaBackgroundPaint.setColor(mAreaColor);canvas.drawCircle(mCenterPoint.x, mCenterPoint.y, mAreaRadius, mAreaBackgroundPaint);} else {// 其他或者未设置mAreaBackgroundPaint.setColor(Color.GRAY);canvas.drawCircle(mCenterPoint.x, mCenterPoint.y, mAreaRadius, mAreaBackgroundPaint);}// 画摇杆if (ROCKER_BACKGROUND_MODE_PIC == mRockerBackgroundMode || ROCKER_BACKGROUND_MODE_XML == mRockerBackgroundMode) {// 图片src.set(0, 0, mRockerBitmap.getWidth(), mRockerBitmap.getHeight());dst.set(mRockerPosition.x - mRockerRadius, mRockerPosition.y - mRockerRadius, mRockerPosition.x + mRockerRadius, mRockerPosition.y + mRockerRadius);canvas.drawBitmap(mRockerBitmap, src, dst, mRockerPaint);} else if (ROCKER_BACKGROUND_MODE_COLOR == mRockerBackgroundMode) {// 色值mRockerPaint.setColor(mRockerColor);canvas.drawCircle(mRockerPosition.x, mRockerPosition.y, mRockerRadius, mRockerPaint);} else {// 其他或者未设置mRockerPaint.setColor(Color.RED);canvas.drawCircle(mRockerPosition.x, mRockerPosition.y, mRockerRadius, mRockerPaint);}}@Overridepublic boolean onTouchEvent(MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN:// 按下// 回调 开始callBackStart();case MotionEvent.ACTION_MOVE:// 移动float moveX = event.getX();float moveY = event.getY();baseDistance = mAreaRadius + 2;
//                Log.e("baseDistance",baseDistance+"");mRockerPosition = getRockerPositionPoint(mCenterPoint, new Point((int) moveX, (int) moveY), mAreaRadius + mRockerRadius, mRockerRadius);moveRocker(mRockerPosition.x, mRockerPosition.y);break;case MotionEvent.ACTION_UP:// 抬起case MotionEvent.ACTION_CANCEL:// 移出区域// 回调 结束callBackFinish();if (mOnShakeListener != null) {mOnShakeListener.direction(Direction.DIRECTION_CENTER);}moveRocker(mCenterPoint.x, mCenterPoint.y);break;}return true;}/*** 获取摇杆实际要显示的位置（点）** @param centerPoint  中心点* @param touchPoint   触摸点* @param regionRadius 摇杆可活动区域半径* @param rockerRadius 摇杆半径* @return 摇杆实际显示的位置（点）*/private Point getRockerPositionPoint(Point centerPoint, Point touchPoint, float regionRadius, float rockerRadius) {// 两点在X轴的距离float lenX = (float) (touchPoint.x - centerPoint.x);// 两点在Y轴距离float lenY = (float) (touchPoint.y - centerPoint.y);// 两点距离float lenXY = (float) Math.sqrt(lenX * lenX + lenY * lenY);// 计算弧度double radian = Math.acos(lenX / lenXY) * (touchPoint.y < centerPoint.y ? -1 : 1);// 计算角度double angle = radian2Angle(radian);if (lenXY + rockerRadius <= regionRadius) { // 触摸位置在可活动范围内// 回调 返回参数callBack(angle, (int) lenXY);return touchPoint;} else { // 触摸位置在可活动范围以外// 计算要显示的位置int showPointX = (int) (centerPoint.x + (regionRadius - rockerRadius) * Math.cos(radian));int showPointY = (int) (centerPoint.y + (regionRadius - rockerRadius) * Math.sin(radian));callBack(angle, (int) Math.sqrt((showPointX - centerPoint.x) * (showPointX - centerPoint.x) + (showPointY - centerPoint.y) * (showPointY - centerPoint.y)));return new Point(showPointX, showPointY);}}/*** 移动摇杆到指定位置** @param x x坐标* @param y y坐标*/private void moveRocker(float x, float y) {mRockerPosition.set((int) x, (int) y);invalidate();}/*** 弧度转角度** @param radian 弧度* @return 角度[0, 360)*/private double radian2Angle(double radian) {double tmp = Math.round(radian / Math.PI * 180);return tmp >= 0 ? tmp : 360 + tmp;}/*** Drawable 转 Bitmap** @param drawable Drawable* @return Bitmap*/private Bitmap drawable2Bitmap(Drawable drawable) {// 取 drawable 的长宽int width = drawable.getIntrinsicWidth();int height = drawable.getIntrinsicHeight();// 取 drawable 的颜色格式Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565;// 建立对应 bitmapBitmap bitmap = Bitmap.createBitmap(width, height, config);Canvas canvas = new Canvas(bitmap);drawable.setBounds(0, 0, width, height);drawable.draw(canvas);return bitmap;}/*** 回调* 开始*/private void callBackStart() {tempDirection = Direction.DIRECTION_CENTER;temp1Direction = Direction.DIRECTION_CENTER;if (null != mOnAngleChangeListener) {mOnAngleChangeListener.onStart();}if (null != mOnShakeListener) {mOnShakeListener.onStart();}if (null != mOnShakeAngleDistanceLevelListener) {mOnShakeAngleDistanceLevelListener.onStart();}}/*** 回调* 返回参数** @param angle 摇动角度*/private void callBack(double angle, float distance) {if (Math.abs(distance - lastDistance) >= (baseDistance / mDistanceLevel)) {lastDistance = distance;if (null != mOnDistanceLevelListener) {int level = (int) (distance / (baseDistance / mDistanceLevel));mOnDistanceLevelListener.onDistanceLevel(level);}}if (lastAngle != angle) {lastAngle = angle;if (null != mOnAngleChangeListener) {mOnAngleChangeListener.angle(angle);}}if (null != mOnShakeListener) {if (CallBackMode.CALL_BACK_MODE_MOVE == mCallBackMode) {switch (mDirectionMode) {case DIRECTION_2_HORIZONTAL:// 左右方向if (ANGLE_0 <= angle && ANGLE_HORIZONTAL_2D_OF_0P > angle || ANGLE_HORIZONTAL_2D_OF_1P <= angle && ANGLE_360 > angle) {// 右mOnShakeListener.direction(Direction.DIRECTION_RIGHT);} else if (ANGLE_HORIZONTAL_2D_OF_0P <= angle && ANGLE_HORIZONTAL_2D_OF_1P > angle) {// 左mOnShakeListener.direction(Direction.DIRECTION_LEFT);}break;case DIRECTION_2_VERTICAL:// 上下方向if (ANGLE_VERTICAL_2D_OF_0P <= angle && ANGLE_VERTICAL_2D_OF_1P > angle) {// 下mOnShakeListener.direction(Direction.DIRECTION_DOWN);} else if (ANGLE_VERTICAL_2D_OF_1P <= angle && ANGLE_360 > angle) {// 上mOnShakeListener.direction(Direction.DIRECTION_UP);}break;case DIRECTION_4_ROTATE_0:// 四个方向if (ANGLE_4D_OF_0P <= angle && ANGLE_4D_OF_1P > angle) {// 右下mOnShakeListener.direction(Direction.DIRECTION_DOWN_RIGHT);} else if (ANGLE_4D_OF_1P <= angle && ANGLE_4D_OF_2P > angle) {// 左下mOnShakeListener.direction(Direction.DIRECTION_DOWN_LEFT);} else if (ANGLE_4D_OF_2P <= angle && ANGLE_4D_OF_3P > angle) {// 左上mOnShakeListener.direction(Direction.DIRECTION_UP_LEFT);} else if (ANGLE_4D_OF_3P <= angle && ANGLE_360 > angle) {// 右上mOnShakeListener.direction(Direction.DIRECTION_UP_RIGHT);}break;case DIRECTION_4_ROTATE_45:// 四个方向 旋转45度if (ANGLE_0 <= angle && ANGLE_ROTATE45_4D_OF_0P > angle || ANGLE_ROTATE45_4D_OF_3P <= angle && ANGLE_360 > angle) {// 右mOnShakeListener.direction(Direction.DIRECTION_RIGHT);} else if (ANGLE_ROTATE45_4D_OF_0P <= angle && ANGLE_ROTATE45_4D_OF_1P > angle) {// 下mOnShakeListener.direction(Direction.DIRECTION_DOWN);} else if (ANGLE_ROTATE45_4D_OF_1P <= angle && ANGLE_ROTATE45_4D_OF_2P > angle) {// 左mOnShakeListener.direction(Direction.DIRECTION_LEFT);} else if (ANGLE_ROTATE45_4D_OF_2P <= angle && ANGLE_ROTATE45_4D_OF_3P > angle) {// 上mOnShakeListener.direction(Direction.DIRECTION_UP);}break;case DIRECTION_8:// 八个方向if (ANGLE_0 <= angle && ANGLE_8D_OF_0P > angle || ANGLE_8D_OF_7P <= angle && ANGLE_360 > angle) {// 右mOnShakeListener.direction(Direction.DIRECTION_RIGHT);} else if (ANGLE_8D_OF_0P <= angle && ANGLE_8D_OF_1P > angle) {// 右下mOnShakeListener.direction(Direction.DIRECTION_DOWN_RIGHT);} else if (ANGLE_8D_OF_1P <= angle && ANGLE_8D_OF_2P > angle) {// 下mOnShakeListener.direction(Direction.DIRECTION_DOWN);} else if (ANGLE_8D_OF_2P <= angle && ANGLE_8D_OF_3P > angle) {// 左下mOnShakeListener.direction(Direction.DIRECTION_DOWN_LEFT);} else if (ANGLE_8D_OF_3P <= angle && ANGLE_8D_OF_4P > angle) {// 左mOnShakeListener.direction(Direction.DIRECTION_LEFT);} else if (ANGLE_8D_OF_4P <= angle && ANGLE_8D_OF_5P > angle) {// 左上mOnShakeListener.direction(Direction.DIRECTION_UP_LEFT);} else if (ANGLE_8D_OF_5P <= angle && ANGLE_8D_OF_6P > angle) {// 上mOnShakeListener.direction(Direction.DIRECTION_UP);} else if (ANGLE_8D_OF_6P <= angle && ANGLE_8D_OF_7P > angle) {// 右上mOnShakeListener.direction(Direction.DIRECTION_UP_RIGHT);}break;default:break;}} else if (CallBackMode.CALL_BACK_MODE_STATE_CHANGE == mCallBackMode) {switch (mDirectionMode) {case DIRECTION_2_HORIZONTAL:// 左右方向if ((ANGLE_0 <= angle && ANGLE_HORIZONTAL_2D_OF_0P > angle || ANGLE_HORIZONTAL_2D_OF_1P <= angle && ANGLE_360 > angle) && tempDirection != Direction.DIRECTION_RIGHT) {// 右tempDirection = Direction.DIRECTION_RIGHT;mOnShakeListener.direction(Direction.DIRECTION_RIGHT);} else if (ANGLE_HORIZONTAL_2D_OF_0P <= angle && ANGLE_HORIZONTAL_2D_OF_1P > angle && tempDirection != Direction.DIRECTION_LEFT) {// 左tempDirection = Direction.DIRECTION_LEFT;mOnShakeListener.direction(Direction.DIRECTION_LEFT);}break;case DIRECTION_2_VERTICAL:// 上下方向if (ANGLE_VERTICAL_2D_OF_0P <= angle && ANGLE_VERTICAL_2D_OF_1P > angle && tempDirection != Direction.DIRECTION_DOWN) {// 下tempDirection = Direction.DIRECTION_DOWN;mOnShakeListener.direction(Direction.DIRECTION_DOWN);} else if (ANGLE_VERTICAL_2D_OF_1P <= angle && ANGLE_360 > angle && tempDirection != Direction.DIRECTION_UP) {// 上tempDirection = Direction.DIRECTION_UP;mOnShakeListener.direction(Direction.DIRECTION_UP);}break;case DIRECTION_4_ROTATE_0:// 四个方向if (ANGLE_4D_OF_0P <= angle && ANGLE_4D_OF_1P > angle && tempDirection != Direction.DIRECTION_DOWN_RIGHT) {// 右下tempDirection = Direction.DIRECTION_DOWN_RIGHT;mOnShakeListener.direction(Direction.DIRECTION_DOWN_RIGHT);} else if (ANGLE_4D_OF_1P <= angle && ANGLE_4D_OF_2P > angle && tempDirection != Direction.DIRECTION_DOWN_LEFT) {// 左下tempDirection = Direction.DIRECTION_DOWN_LEFT;mOnShakeListener.direction(Direction.DIRECTION_DOWN_LEFT);} else if (ANGLE_4D_OF_2P <= angle && ANGLE_4D_OF_3P > angle && tempDirection != Direction.DIRECTION_UP_LEFT) {// 左上tempDirection = Direction.DIRECTION_UP_LEFT;mOnShakeListener.direction(Direction.DIRECTION_UP_LEFT);} else if (ANGLE_4D_OF_3P <= angle && ANGLE_360 > angle && tempDirection != Direction.DIRECTION_UP_RIGHT) {// 右上tempDirection = Direction.DIRECTION_UP_RIGHT;mOnShakeListener.direction(Direction.DIRECTION_UP_RIGHT);}break;case DIRECTION_4_ROTATE_45:// 四个方向 旋转45度if ((ANGLE_0 <= angle && ANGLE_ROTATE45_4D_OF_0P > angle || ANGLE_ROTATE45_4D_OF_3P <= angle && ANGLE_360 > angle) && tempDirection != Direction.DIRECTION_RIGHT) {// 右tempDirection = Direction.DIRECTION_RIGHT;mOnShakeListener.direction(Direction.DIRECTION_RIGHT);} else if (ANGLE_ROTATE45_4D_OF_0P <= angle && ANGLE_ROTATE45_4D_OF_1P > angle && tempDirection != Direction.DIRECTION_DOWN) {// 下tempDirection = Direction.DIRECTION_DOWN;mOnShakeListener.direction(Direction.DIRECTION_DOWN);} else if (ANGLE_ROTATE45_4D_OF_1P <= angle && ANGLE_ROTATE45_4D_OF_2P > angle && tempDirection != Direction.DIRECTION_LEFT) {// 左tempDirection = Direction.DIRECTION_LEFT;mOnShakeListener.direction(Direction.DIRECTION_LEFT);} else if (ANGLE_ROTATE45_4D_OF_2P <= angle && ANGLE_ROTATE45_4D_OF_3P > angle && tempDirection != Direction.DIRECTION_UP) {// 上tempDirection = Direction.DIRECTION_UP;mOnShakeListener.direction(Direction.DIRECTION_UP);}break;case DIRECTION_8:// 八个方向if ((ANGLE_0 <= angle && ANGLE_8D_OF_0P > angle || ANGLE_8D_OF_7P <= angle && ANGLE_360 > angle) && tempDirection != Direction.DIRECTION_RIGHT) {// 右tempDirection = Direction.DIRECTION_RIGHT;mOnShakeListener.direction(Direction.DIRECTION_RIGHT);} else if (ANGLE_8D_OF_0P <= angle && ANGLE_8D_OF_1P > angle && tempDirection != Direction.DIRECTION_DOWN_RIGHT) {// 右下tempDirection = Direction.DIRECTION_DOWN_RIGHT;mOnShakeListener.direction(Direction.DIRECTION_DOWN_RIGHT);} else if (ANGLE_8D_OF_1P <= angle && ANGLE_8D_OF_2P > angle && tempDirection != Direction.DIRECTION_DOWN) {// 下tempDirection = Direction.DIRECTION_DOWN;mOnShakeListener.direction(Direction.DIRECTION_DOWN);} else if (ANGLE_8D_OF_2P <= angle && ANGLE_8D_OF_3P > angle && tempDirection != Direction.DIRECTION_DOWN_LEFT) {// 左下tempDirection = Direction.DIRECTION_DOWN_LEFT;mOnShakeListener.direction(Direction.DIRECTION_DOWN_LEFT);} else if (ANGLE_8D_OF_3P <= angle && ANGLE_8D_OF_4P > angle && tempDirection != Direction.DIRECTION_LEFT) {// 左tempDirection = Direction.DIRECTION_LEFT;mOnShakeListener.direction(Direction.DIRECTION_LEFT);} else if (ANGLE_8D_OF_4P <= angle && ANGLE_8D_OF_5P > angle && tempDirection != Direction.DIRECTION_UP_LEFT) {// 左上tempDirection = Direction.DIRECTION_UP_LEFT;mOnShakeListener.direction(Direction.DIRECTION_UP_LEFT);} else if (ANGLE_8D_OF_5P <= angle && ANGLE_8D_OF_6P > angle && tempDirection != Direction.DIRECTION_UP) {// 上tempDirection = Direction.DIRECTION_UP;mOnShakeListener.direction(Direction.DIRECTION_UP);} else if (ANGLE_8D_OF_6P <= angle && ANGLE_8D_OF_7P > angle && tempDirection != Direction.DIRECTION_UP_RIGHT) {// 右上tempDirection = Direction.DIRECTION_UP_RIGHT;mOnShakeListener.direction(Direction.DIRECTION_UP_RIGHT);}break;default:break;}}}if (null != mOnShakeAngleDistanceLevelListener) {int level = (int) (distance / (baseDistance / mDistanceLevel));if (CallBackMode.CALL_BACK_MODE_MOVE == mCallBackMode) {switch (mDirectionMode) {case DIRECTION_2_HORIZONTAL:// 左右方向if (ANGLE_0 <= angle && ANGLE_HORIZONTAL_2D_OF_0P > angle || ANGLE_HORIZONTAL_2D_OF_1P <= angle && ANGLE_360 > angle) {// 右mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_RIGHT, angle, level);} else if (ANGLE_HORIZONTAL_2D_OF_0P <= angle && ANGLE_HORIZONTAL_2D_OF_1P > angle) {// 左mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_LEFT, angle, level);}break;case DIRECTION_2_VERTICAL:// 上下方向if (ANGLE_VERTICAL_2D_OF_0P <= angle && ANGLE_VERTICAL_2D_OF_1P > angle) {// 下mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN, angle, level);} else if (ANGLE_VERTICAL_2D_OF_1P <= angle && ANGLE_360 > angle) {// 上mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP, angle, level);}break;case DIRECTION_4_ROTATE_0:// 四个方向if (ANGLE_4D_OF_0P <= angle && ANGLE_4D_OF_1P > angle) {// 右下mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN_RIGHT, angle, level);} else if (ANGLE_4D_OF_1P <= angle && ANGLE_4D_OF_2P > angle) {// 左下mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN_LEFT, angle, level);} else if (ANGLE_4D_OF_2P <= angle && ANGLE_4D_OF_3P > angle) {// 左上mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP_LEFT, angle, level);} else if (ANGLE_4D_OF_3P <= angle && ANGLE_360 > angle) {// 右上mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP_RIGHT, angle, level);}break;case DIRECTION_4_ROTATE_45:// 四个方向 旋转45度if (ANGLE_0 <= angle && ANGLE_ROTATE45_4D_OF_0P > angle || ANGLE_ROTATE45_4D_OF_3P <= angle && ANGLE_360 > angle) {// 右mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_RIGHT, angle, level);} else if (ANGLE_ROTATE45_4D_OF_0P <= angle && ANGLE_ROTATE45_4D_OF_1P > angle) {// 下mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN, angle, level);} else if (ANGLE_ROTATE45_4D_OF_1P <= angle && ANGLE_ROTATE45_4D_OF_2P > angle) {// 左mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_LEFT, angle, level);} else if (ANGLE_ROTATE45_4D_OF_2P <= angle && ANGLE_ROTATE45_4D_OF_3P > angle) {// 上mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP, angle, level);}break;case DIRECTION_8:// 八个方向if (ANGLE_0 <= angle && ANGLE_8D_OF_0P > angle || ANGLE_8D_OF_7P <= angle && ANGLE_360 > angle) {// 右mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_RIGHT, angle, level);} else if (ANGLE_8D_OF_0P <= angle && ANGLE_8D_OF_1P > angle) {// 右下mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN_RIGHT, angle, level);} else if (ANGLE_8D_OF_1P <= angle && ANGLE_8D_OF_2P > angle) {// 下mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN, angle, level);} else if (ANGLE_8D_OF_2P <= angle && ANGLE_8D_OF_3P > angle) {// 左下mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN_LEFT, angle, level);} else if (ANGLE_8D_OF_3P <= angle && ANGLE_8D_OF_4P > angle) {// 左mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_LEFT, angle, level);} else if (ANGLE_8D_OF_4P <= angle && ANGLE_8D_OF_5P > angle) {// 左上mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP_LEFT, angle, level);} else if (ANGLE_8D_OF_5P <= angle && ANGLE_8D_OF_6P > angle) {// 上mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP, angle, level);} else if (ANGLE_8D_OF_6P <= angle && ANGLE_8D_OF_7P > angle) {// 右上mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP_RIGHT, angle, level);}break;default:break;}} else if (CallBackMode.CALL_BACK_MODE_STATE_CHANGE == mCallBackMode) {switch (mDirectionMode) {case DIRECTION_2_HORIZONTAL:// 左右方向if ((ANGLE_0 <= angle && ANGLE_HORIZONTAL_2D_OF_0P > angle || ANGLE_HORIZONTAL_2D_OF_1P <= angle && ANGLE_360 > angle) &&(temp1Direction != Direction.DIRECTION_RIGHT || last1Angle != angle || last1Level != level)) {// 右temp1Direction = Direction.DIRECTION_RIGHT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_RIGHT, angle, level);} else if (ANGLE_HORIZONTAL_2D_OF_0P <= angle && ANGLE_HORIZONTAL_2D_OF_1P > angle &&(temp1Direction != Direction.DIRECTION_LEFT || last1Angle != angle || last1Level != level)) {// 左temp1Direction = Direction.DIRECTION_LEFT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_LEFT, angle, level);}break;case DIRECTION_2_VERTICAL:// 上下方向if (ANGLE_VERTICAL_2D_OF_0P <= angle && ANGLE_VERTICAL_2D_OF_1P > angle &&(temp1Direction != Direction.DIRECTION_DOWN || last1Angle != angle || last1Level != level)) {// 下temp1Direction = Direction.DIRECTION_DOWN;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN, angle, level);} else if (ANGLE_VERTICAL_2D_OF_1P <= angle && ANGLE_360 > angle &&(temp1Direction != Direction.DIRECTION_UP || last1Angle != angle || last1Level != level)) {// 上temp1Direction = Direction.DIRECTION_UP;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP, angle, level);}break;case DIRECTION_4_ROTATE_0:// 四个方向if (ANGLE_4D_OF_0P <= angle && ANGLE_4D_OF_1P > angle &&(temp1Direction != Direction.DIRECTION_DOWN_RIGHT || last1Angle != angle || last1Level != level)) {// 右下temp1Direction = Direction.DIRECTION_DOWN_RIGHT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN_RIGHT, angle, level);} else if (ANGLE_4D_OF_1P <= angle && ANGLE_4D_OF_2P > angle &&(temp1Direction != Direction.DIRECTION_DOWN_LEFT || last1Angle != angle || last1Level != level)) {// 左下temp1Direction = Direction.DIRECTION_DOWN_LEFT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN_LEFT, angle, level);} else if (ANGLE_4D_OF_2P <= angle && ANGLE_4D_OF_3P > angle &&(temp1Direction != Direction.DIRECTION_UP_LEFT || last1Angle != angle || last1Level != level)) {// 左上temp1Direction = Direction.DIRECTION_UP_LEFT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP_LEFT, angle, level);} else if (ANGLE_4D_OF_3P <= angle && ANGLE_360 > angle &&(temp1Direction != Direction.DIRECTION_UP_RIGHT || last1Angle != angle || last1Level != level)) {// 右上temp1Direction = Direction.DIRECTION_UP_RIGHT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP_RIGHT, angle, level);}break;case DIRECTION_4_ROTATE_45:// 四个方向 旋转45度if ((ANGLE_0 <= angle && ANGLE_ROTATE45_4D_OF_0P > angle || ANGLE_ROTATE45_4D_OF_3P <= angle && ANGLE_360 > angle) &&(temp1Direction != Direction.DIRECTION_RIGHT || last1Angle != angle || last1Level != level)) {// 右temp1Direction = Direction.DIRECTION_RIGHT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_RIGHT, angle, level);} else if (ANGLE_ROTATE45_4D_OF_0P <= angle && ANGLE_ROTATE45_4D_OF_1P > angle &&(temp1Direction != Direction.DIRECTION_DOWN || last1Angle != angle || last1Level != level)) {// 下temp1Direction = Direction.DIRECTION_DOWN;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN, angle, level);} else if (ANGLE_ROTATE45_4D_OF_1P <= angle && ANGLE_ROTATE45_4D_OF_2P > angle &&(temp1Direction != Direction.DIRECTION_LEFT || last1Angle != angle || last1Level != level)) {// 左temp1Direction = Direction.DIRECTION_LEFT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_LEFT, angle, level);} else if (ANGLE_ROTATE45_4D_OF_2P <= angle && ANGLE_ROTATE45_4D_OF_3P > angle &&(temp1Direction != Direction.DIRECTION_UP || last1Angle != angle || last1Level != level)) {// 上temp1Direction = Direction.DIRECTION_UP;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP, angle, level);}break;case DIRECTION_8:// 八个方向if ((ANGLE_0 <= angle && ANGLE_8D_OF_0P > angle || ANGLE_8D_OF_7P <= angle && ANGLE_360 > angle)&& (temp1Direction != Direction.DIRECTION_RIGHT || last1Angle != angle || last1Level != level)) {// 右temp1Direction = Direction.DIRECTION_RIGHT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_RIGHT, angle, level);} else if (ANGLE_8D_OF_0P <= angle && ANGLE_8D_OF_1P > angle &&(temp1Direction != Direction.DIRECTION_DOWN_RIGHT || last1Angle != angle || last1Level != level)) {// 右下temp1Direction = Direction.DIRECTION_DOWN_RIGHT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN_RIGHT, angle, level);} else if (ANGLE_8D_OF_1P <= angle && ANGLE_8D_OF_2P > angle &&(temp1Direction != Direction.DIRECTION_DOWN || last1Angle != angle || last1Level != level)) {// 下temp1Direction = Direction.DIRECTION_DOWN;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN, angle, level);} else if (ANGLE_8D_OF_2P <= angle && ANGLE_8D_OF_3P > angle &&(temp1Direction != Direction.DIRECTION_DOWN_LEFT || last1Angle != angle || last1Level != level)) {// 左下temp1Direction = Direction.DIRECTION_DOWN_LEFT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_DOWN_LEFT, angle, level);} else if (ANGLE_8D_OF_3P <= angle && ANGLE_8D_OF_4P > angle &&(temp1Direction != Direction.DIRECTION_LEFT || last1Angle != angle || last1Level != level)) {// 左temp1Direction = Direction.DIRECTION_LEFT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_LEFT, angle, level);} else if (ANGLE_8D_OF_4P <= angle && ANGLE_8D_OF_5P > angle &&(temp1Direction != Direction.DIRECTION_UP_LEFT || last1Angle != angle || last1Level != level)) {// 左上temp1Direction = Direction.DIRECTION_UP_LEFT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP_LEFT, angle, level);} else if (ANGLE_8D_OF_5P <= angle && ANGLE_8D_OF_6P > angle &&(temp1Direction != Direction.DIRECTION_UP || last1Angle != angle || last1Level != level)) {// 上temp1Direction = Direction.DIRECTION_UP;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP, angle, level);} else if (ANGLE_8D_OF_6P <= angle && ANGLE_8D_OF_7P > angle &&(temp1Direction != Direction.DIRECTION_UP_RIGHT || last1Angle != angle || last1Level != level)) {// 右上temp1Direction = Direction.DIRECTION_UP_RIGHT;last1Angle = angle;last1Level = level;mOnShakeAngleDistanceLevelListener.onShakeAngleDistanceLevel(Direction.DIRECTION_UP_RIGHT, angle, level);}break;default:break;}}}}/*** 回调* 结束*/private void callBackFinish() {tempDirection = Direction.DIRECTION_CENTER;temp1Direction = Direction.DIRECTION_CENTER;if (null != mOnAngleChangeListener) {mOnAngleChangeListener.onFinish();}if (null != mOnShakeListener) {mOnShakeListener.onFinish();}if (null != mOnShakeAngleDistanceLevelListener) {mOnShakeAngleDistanceLevelListener.onFinish();}}/*** 回调模式*/public enum CallBackMode {// 有移动就立刻回调CALL_BACK_MODE_MOVE,// 只有状态变化的时候才回调CALL_BACK_MODE_STATE_CHANGE,//只有状态变化或者距离变化的时候才回调CALL_BACK_MODE_STATE_DISTANCE_CHANGE}/*** 设置回调模式** @param mode 回调模式*/public void setCallBackMode(CallBackMode mode) {mCallBackMode = mode;}/*** 摇杆支持几个方向*/public enum DirectionMode {DIRECTION_2_HORIZONTAL,// 横向 左右两个方向DIRECTION_2_VERTICAL, // 纵向 上下两个方向DIRECTION_4_ROTATE_0, // 四个方向DIRECTION_4_ROTATE_45, // 四个方向 旋转45度DIRECTION_8 // 八个方向}/*** 方向*/public enum Direction {DIRECTION_LEFT, // 左DIRECTION_RIGHT, // 右DIRECTION_UP, // 上DIRECTION_DOWN, // 下DIRECTION_UP_LEFT, // 左上DIRECTION_UP_RIGHT, // 右上DIRECTION_DOWN_LEFT, // 左下DIRECTION_DOWN_RIGHT, // 右下DIRECTION_CENTER // 中间}/*** 添加摇杆摇动角度的监听** @param listener 回调接口*/public void setOnAngleChangeListener(OnAngleChangeListener listener) {mOnAngleChangeListener = listener;}/*** 添加摇动的监听** @param directionMode 监听的方向* @param listener      回调*/public void setOnShakeListener(DirectionMode directionMode, OnShakeListener listener) {mDirectionMode = directionMode;mOnShakeListener = listener;}/*** 添加摇动的距离变化*/public void setOnDistanceLevelListener(OnDistanceLevelListener listener) {mOnDistanceLevelListener = listener;}/*** 添加变化回调*/public void setOnShakeAngleDistanceLevelListener(OnShakeAngleDistanceLevelListener listener) {mOnShakeAngleDistanceLevelListener = listener;}/*** 摇动方向监听接口*/public interface OnShakeListener {// 开始void onStart();/*** 摇动方向** @param direction 方向*/void direction(Direction direction);// 结束void onFinish();}/*** 摇动角度的监听接口*/public interface OnAngleChangeListener {// 开始void onStart();/*** 摇杆角度变化** @param angle 角度[0,360)*/void angle(double angle);// 结束void onFinish();}/*** 摇动距离*/public interface OnDistanceLevelListener {void onDistanceLevel(int level);}/*** 摇动方向+角度+距离*/public interface OnShakeAngleDistanceLevelListener {// 开始void onStart();void onShakeAngleDistanceLevel(Direction direction, double angle, int level);// 结束void onFinish();}private CallBackMode getCallBackMode(int mode) {switch (mode) {case 0:return CallBackMode.CALL_BACK_MODE_MOVE;case 1:return CallBackMode.CALL_BACK_MODE_STATE_CHANGE;}return mCallBackMode;}
}

然后在value文件夹下创建attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources><!--areaBackground 设置区域背景rockerBackground 设置摇杆的样式rockerScale 设置摇杆的相对于背景的比例rockerSpeedLevel 设置当前位置相对于中心点的距离的比例  如：10  则中心点到边缘的距离分为 10 分越靠外数值越大 0-10rockerCallBackMode 有变化就回调，或者是方向改变才会回调--><declare-styleable name="RockerView"><attr name="areaBackground" format="color|reference" /><attr name="rockerBackground" format="color|reference" /><attr name="rockerScale" format="float"/><attr name="rockerSpeedLevel" format="integer" /><attr name="rockerCallBackMode"><flag name="CALL_BACK_MODE_MOVE" value="0" /><flag name="CALL_BACK_MODE_STATE_CHANGE" value="1" /></attr></declare-styleable>
</resources>

使用非常简单

mViewBinding.rockerView.setOnShakeAngleDistanceLevelListener(new RockerView.OnShakeAngleDistanceLevelListener() {@Overridepublic void onStart() {}@Overridepublic void onShakeAngleDistanceLevel(RockerView.Direction direction, double angle, int level) {LogUtil.d(TAG, "onShakeAngleDistanceLevel:" + direction + ":" + angle + ":" + level);}@Overridepublic void onFinish() {}});

其他具体的回调用法可以看源码可以看readme。

改后的源码

RockerViewUDP: esp32的测试程序，包含摇杆插件，udp通信，esp32的视频传输，对应博文https://mp.csdn.net/mp_blog/creation/editor?spm=1010.2135.3001.4503

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