Android自定义StepView仿外卖配送进度

 CheckBox cbTouch = findViewById(R.id.cb_touch); CheckBox cbIsDown = findViewById(R.id.cb_is_down); final StepView stepView = findViewById(R.id.step_view); String[] stepTexts = new String[]{"订单已提交", "商家已接单", "配送中", "已送达"}; stepView.setStepTexts(stepTexts);//传入每一进度的文字描述 stepView.setCurrentStep(2);//设置当前进度所在位置 stepView.setOnItemStepTouchListener(new StepView.OnItemStepTouchListener() { @Override public void onItemStepTouch(int postion) { Log.d(TAG, "当前点击位置: "+postion); } }); cbTouch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { stepView.setStepIsTouch(isChecked); } }); cbIsDown.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { stepView.setTextUpLine(!isChecked); } }); 

 public StepView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(context, attrs); } private void init(Context context, AttributeSet attrs) { mLinePaint = new Paint(); mLinePaint.setAntiAlias(true); mTextPaint = new Paint(); mTextPaint.setAntiAlias(true); mPreLineLength = 0; //默认的step图片 mNormalBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_normal); mPassedBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_passed); mTargetBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_target); TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.StepView); //获取xml文件中的线的颜色值、size mNormalLineColor = typedArray.getColor(R.styleable.StepView_normal_line_color, Color.BLUE); mPassedLineColor = typedArray.getColor(R.styleable.StepView_passed_line_color, Color.WHITE); int lineSize = (int) typedArray.getDimension(R.styleable.StepView_line_size, 2); //获取xml文件中的文本的颜色值、size mNormalTextColor = typedArray.getColor(R.styleable.StepView_normal_text_color, Color.BLACK); mTargetTextColor = typedArray.getColor(R.styleable.StepView_target_text_color, Color.BLACK); int textSize = (int) typedArray.getDimension(R.styleable.StepView_text_size, 10); //获取xml文件中的step的size，设置给step图片的高度 int stepSize = (int) typedArray.getDimension(R.styleable.StepView_step_size, 0); //获取xml文件中的文本和线之间的间距 mTextLineMargin = (int) typedArray.getDimension(R.styleable.StepView_text_line_margin, 3); //获取xml文件中的step总数 mStepCount = typedArray.getInt(R.styleable.StepView_step_count, 2); //获取xml文件中的当前step位置 mCurrentStep = typedArray.getInt(R.styleable.StepView_current_step, 0); //获取xml文件中step图片 BitmapDrawable normalDrawable = (BitmapDrawable) typedArray.getDrawable(R.styleable.StepView_normal_step_iv); BitmapDrawable passedDrawable = (BitmapDrawable) typedArray.getDrawable(R.styleable.StepView_passed_step_iv); BitmapDrawable targetDrawable = (BitmapDrawable) typedArray.getDrawable(R.styleable.StepView_target_step_iv); //获取xml文件中step是否可点击TRUE可以，FALSE不可以，默认为FALSE mStepIsTouch = typedArray.getBoolean(R.styleable.StepView_step_is_touch, false); //获取xml文件中text是否在线上，TRUE在线上，FALSE不在线上，默认为FALSE mTextUpLine = typedArray.getBoolean(R.styleable.StepView_text_up_line, true); mTextPaint.setTextSize(textSize); mLinePaint.setStrokeWidth(lineSize); mNormalBitmap = normalDrawable.getBitmap();//将xml文件中指定的图片赋给对应的bitmap mPassedBitmap = passedDrawable.getBitmap(); mTargetBitmap = targetDrawable.getBitmap(); mNormalBitmapWH = getBitmapWH(stepSize, mNormalBitmap); mPassedBitmapWH = getBitmapWH(stepSize, mPassedBitmap); mTargetBitmapWH = getBitmapWH(stepSize, mTargetBitmap); if (stepSize != 0) {//如果stepSize不为0，要对其进行压缩处理，使其高度等于stepSize mNormalBitmap = zoomImg(mNormalBitmap, mNormalBitmapWH); mPassedBitmap = zoomImg(mPassedBitmap, mPassedBitmapWH); mTargetBitmap = zoomImg(mTargetBitmap, mPassedBitmapWH); } mStepRectFs = new RectF[mStepCount];//初始化step所对应的矩阵数组，点击step时会用到，用于确定点击的是哪个step typedArray.recycle(); } 

 @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int widthMode = MeasureSpec.getMode(widthMeasureSpec); int widthSize = MeasureSpec.getSize(widthMeasureSpec); int heightMode = MeasureSpec.getMode(heightMeasureSpec); int heightSize = MeasureSpec.getSize(heightMeasureSpec); int width = widthSize - getPaddingLeft() - getPaddingRight();//任何模式下with都是父容器给定的with-padding值 int height = 0; if (heightMode == MeasureSpec.EXACTLY) { height = heightSize - getPaddingTop() - getPaddingBottom(); } else { height = dp2px(getContext(), 80); } setMeasuredDimension(width, height); mPreLineLength = width / (mStepCount + 1);//计算每条线的长度，由于线比step多一个所以加1 } 

 @Override protected void onDraw(Canvas canvas) { if (mStepCount != 0) { drawLine(canvas);//drawLine和drawStep分两次循环是为了防止部分线覆盖step drawStep(canvas); } } 

 private void drawLine(Canvas canvas) { float lineStartX = getPaddingLeft(); float lineStartY = getLineStartY(); float lineStopX = 0; float lineStopY = lineStartY; for (int i = 0; i 

 private void drawStep(Canvas canvas) { float lineStartX = getPaddingLeft(); float lineStartY = getLineStartY(); Bitmap currentBitmap; int[] currentBitmapWH; float lineStopX; float bitmapLeft; float bitmapTop; for (int i = 0; i 

 @Override public boolean onTouchEvent(MotionEvent event) { if (!mStepIsTouch) {//不能点击返回FALSE不处理 return false; } switch (event.getAction()) { case MotionEvent.ACTION_DOWN: float x = event.getX(); float y = event.getY(); int touchStep = getTouchStep(new PointF(x, y));//获取被点击的点的位置 if (touchStep != -1) { mCurrentStep = touchStep + 1; invalidate(); } break; } return true; } 

 private OnItemStepTouchListener mOnItemStepTouchListener; public void setOnItemStepTouchListener(OnItemStepTouchListener onItemStepTouchListener) { mOnItemStepTouchListener = onItemStepTouchListener; } //每一个step的触摸监听 public interface OnItemStepTouchListener { void onItemStepTouch(int postion); } 

 //设置当前step public void setCurrentStep(int currentStep) { mCurrentStep = currentStep; invalidate(); } 

 //设置step对应的texts public void setStepTexts(String[] stepTexts) { mStepTexts = stepTexts; mStepCount = mStepTexts.length; mStepRectFs = new RectF[mStepCount];//初始化step所对应的矩阵数组，点击step时会用到，用于确定点击的是哪个step } 

 public void setStepIsTouch(boolean stepIsTouch) { mStepIsTouch = stepIsTouch; } 

 public void setTextUpLine(boolean textUpLine) { mTextUpLine = textUpLine; invalidate(); }