Android自定义StepView仿外卖配送进度

本文实例为大家分享了Android自定义StepView配送进度展示的具体代码，供大家参考，具体内容如下

效果图

使用

可在layout文件下设置以下属性。

<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="StepView">
<attr name="step_size" format="dimension"/><!--step的size，也就是image的大小-->
<attr name="line_size" format="dimension"/><!--线宽-->
<attr name="text_size" format="dimension"/><!--文字大小-->
<attr name="text_line_margin" format="dimension"/><!--文字和线之间的间距-->
<attr name="normal_line_color" format="color"/><!--一般线的颜色-->
<attr name="normal_text_color" format="color"/><!--一般文字的颜色-->
<attr name="target_text_color" format="color"/><!--一般文字的颜色-->
<attr name="passed_line_color" format="color"/><!--已经过线的颜色-->
<attr name="step_count" format="integer"/><!--总step数-->
<attr name="current_step" format="integer"/><!--当前step位置-->
<attr name="normal_step_iv" format="reference"/><!--一般图片-->
<attr name="passed_step_iv" format="reference"/><!--已经过的图片-->
<attr name="target_step_iv" format="reference"/><!--当前step图片-->
<attr name="step_is_touch" format="boolean"/><!--step是否可点-->
<attr name="text_up_line" format="boolean"/><!--文字是否在线上-->
</declare-styleable>
</resources>

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);
}
});

步骤

1、在构造函数中初始化文字、线、step图片的属性。

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();
}

2、在onMeasure中对StepView的宽高进行设置，并根据StepView的宽高计算每条直线的长度。

@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
}

3、开始绘制，先画线，再画step和文字。

@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);
}
}

4、画线，前一条线的stopX坐标是下一条线的startX坐标，并根据当前step所在的位置对lineColor进行设置。

private void drawLine(Canvas canvas) {
float lineStartX = getPaddingLeft();
float lineStartY = getLineStartY();
float lineStopX = 0;
float lineStopY = lineStartY;
for (int i = 0; i < mStepCount + 1; i++) {
if (i < mCurrentStep - 1) {
 mLinePaint.setColor(mPassedLineColor);
} else if (i == mCurrentStep - 1) {
 mLinePaint.setColor(mPassedLineColor);
} else {
 mLinePaint.setColor(mNormalLineColor);
}
lineStopX = lineStartX + mPreLineLength;
canvas.drawLine(lineStartX, lineStartY, lineStopX, lineStopY, mLinePaint);
lineStartX = lineStopX;
}
}

5、画step和文字。

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 < mStepCount; i++) {
if (i < mCurrentStep - 1) {
 currentBitmap = mPassedBitmap;
 currentBitmapWH = mPassedBitmapWH;
 mTextPaint.setColor(mNormalTextColor);
} else if (i == mCurrentStep - 1) {
 currentBitmap = mTargetBitmap;
 currentBitmapWH = mTargetBitmapWH;
 mTextPaint.setColor(mTargetTextColor);
} else {
 currentBitmap = mNormalBitmap;
 currentBitmapWH = mNormalBitmapWH;
 mTextPaint.setColor(mNormalTextColor);
}
lineStopX = lineStartX + mPreLineLength;
bitmapLeft = lineStopX - currentBitmapWH[0] / 2;
bitmapTop = lineStartY - currentBitmapWH[1] / 2;
canvas.drawBitmap(currentBitmap, bitmapLeft, bitmapTop, null);
mStepRectFs[i] = new RectF(bitmapLeft, bitmapTop, bitmapLeft + currentBitmapWH[0], bitmapTop + currentBitmapWH[1]);
if (mStepTexts != null) {//当没有传入对应的texts时不需要划线
 drawText(canvas, i, bitmapLeft + currentBitmapWH[1] / 2, bitmapTop, currentBitmapWH[1]);//传入step中点坐标
}
lineStartX = lineStopX;
}
}

private void drawText(Canvas canvas, int i, float x, float y, float bitmapH) {
String text = mStepTexts[i];
int[] textWH = getTextWH(text);
int textWidth = textWH[0];
int textHeight = textWH[1];
float bottom = 0;
if (mTextUpLine) {//画文本时的基准点是left.bottom,使其中心点与step的中心点对其
bottom = y - mTextLineMargin;
} else {
bottom = y + bitmapH + mTextLineMargin + textHeight;
}
canvas.drawText(text, x - textWidth / 2, bottom, mTextPaint);
}

6、对触摸事件进行处理。

@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;
}

7、step的触摸监听。

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);
}

8、设置当前进度所在位置，也可在layout文件中通过current_step属性进行设置。

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

9、设置step对应的文字，不传入不会显示文字。

//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
}

10、设置step是否可点击，不出入默认为false不可点击，也可在layout文件中通过step_is_touch属性进行设置。

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

11、设置文字是否在线上，不传入默认为true在线上，也可在layout文件中通过text_up_line属性进行设置。

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

源码地址：StepViewDemo

来源：https://blog.csdn.net/qq_30874221/article/details/79596334