Android 开发之-------自定义进度展示
最近在做进度展示相关内容，于是手动写了一个，不太完善，希望大神读者们多多指正
下面是效果图：
/**
* 进度展示view
*/
public class StepView extends View {
private Paint paint;
private int mSelectColor=Color.BLUE;
private int mNormalColor=Color.GRAY;
private int mSteps=3;
private int mWidth;
private int mHeight;
private int mStepLength;
private Paint textPaint;
int mCurrentStep=0;
List mStepTitles=new ArrayList<>();
private Paint mTitlePaint;
public StepView(Context context) {
this(context,null);
}
public StepView(Context context, AttributeSet attrs) {
this(context,attrs,0);
}
public StepView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initAttr(context,attrs);
initPaint();
}
private void initPaint() {
paint= new Paint(Paint.ANTI_ALIAS_FLAG);
textPaint= new Paint(Paint.ANTI_ALIAS_FLAG);
mTitlePaint= new Paint(Paint.ANTI_ALIAS_FLAG);
mTitlePaint.setTextSize(30);
mTitlePaint.setStrokeWidth(8);
mTitlePaint.setColor(Color.BLACK);
textPaint.setColor(Color.WHITE);
this.paint.setStyle(Paint.Style.FILL);
this.paint.setStrokeWidth(8);
textPaint.setTextSize(20);
textPaint.setStrokeWidth(5);
}
private void initAttr(Context context, AttributeSet attrs) {
TypedArray array= context.obtainStyledAttributes(attrs, R.styleable.StepView);
mNormalColor= array.getColor(R.styleable.StepView_normalColor, Color.GRAY);
mSelectColor= array.getColor(R.styleable.StepView_selectedColor, Color.GREEN);
mSteps= array.getInteger(R.styleable.StepView_steps, 3);
array.recycle();
for (int i= 0; i< mSteps; i++) {
mStepTitles.add("步骤"+(i+1));
}
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
mWidth= w;
mHeight= h;
mStepLength= (mWidth-100)/(mSteps-1);
Log.i("xuning","width:"+mWidth);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
drawStep(canvas);
}
private void drawStep(Canvas canvas) {
if (mCurrentStep>0){
int startX=60;
int stopX=0;
for (int i= 0; i< mSteps; i++) {
if (i< mCurrentStep){
paint.setColor(mSelectColor);
}else {
paint.setColor(mNormalColor);
}
stopX=startX+mStepLength;
canvas.drawCircle(startX,20,20,paint);
canvas.drawText(i+1+"",startX-5,25,textPaint);
float v= mTitlePaint.measureText(mStepTitles.get(i));
canvas.drawText(mStepTitles.get(i),startX-v/2,90,mTitlePaint);
if (i< mSteps-1)
canvas.drawLine(startX+20,20,stopX-20,20,paint);
startX+=mStepLength;
}
}else {
paint.setColor(mNormalColor);
int startX=60;
int stopX=0;
for (int i= 0; i< mSteps; i++) {
stopX=startX+mStepLength;
canvas.drawCircle(startX,20,20,paint);
canvas.drawText(i+1+"",startX-5,25,textPaint);
float v= mTitlePaint.measureText(mStepTitles.get(i));
canvas.drawText(mStepTitles.get(i),startX-v/2,90,mTitlePaint);
if (i< mSteps-1)
canvas.drawLine(startX+20,20,stopX-20,20,paint);
startX+=mStepLength;
}
}
}
public void nextStep(){
mCurrentStep++;
invalidate();
}
public int getSteps(){
return mSteps;
}
public int getCurrentStep(){
return mCurrentStep;
}
public void setTitles(List datas){
this.mStepTitles=datas;
invalidate();
}
}
