Android自定义View仿QQ运动步数效果

<?xml version="1.0" encoding="utf-8"?><resources>  <declare-styleable name="MyQQStep">    <attr name="out_color" format="color"/>    <attr name="inner_color" format="color"/>    <attr name="border_width" format="dimension"/>    <attr name="text_size" format="dimension"/>    <attr name="text_color" format="color"/>  </declare-styleable></resources>

/** * Created by Michael on 2019/11/1. */ public class MyQQStep extends View {   private int out_color;  private int inner_color;  private float width;  private float textSize;  private int color;  private int width01;  private int height01;  private Paint outPaint;  private Paint innerPaint;  private Paint textPaint;   private float percent;  private int step;   public MyQQStep(Context context) {    this(context,null);  }   public MyQQStep(Context context, @Nullable AttributeSet attrs) {    this(context, attrs,0);  }   public MyQQStep(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {    super(context, attrs, defStyleAttr);    TypedArray array = context.obtainStyledAttributes(attrs,R.styleable.MyQQStep);    out_color = array.getColor(R.styleable.MyQQStep_out_color, Color.BLACK);    inner_color = array.getColor(R.styleable.MyQQStep_inner_color, Color.RED);    width = array.getDimension(R.styleable.MyQQStep_border_width,10);    textSize = array.getDimensionPixelSize(R.styleable.MyQQStep_text_size,20);    color = array.getColor(R.styleable.MyQQStep_text_color, Color.GREEN);    array.recycle();    initPaint();    percent = 0;    step = 5000;  }   private void initPaint() {    outPaint = new Paint();    outPaint.setAntiAlias(true);    outPaint.setStyle(Paint.Style.STROKE);    outPaint.setStrokeWidth(width);    outPaint.setColor(out_color);    outPaint.setStrokeCap(Paint.Cap.ROUND);     innerPaint = new Paint();    innerPaint.setAntiAlias(true);    innerPaint.setStrokeWidth(width);    innerPaint.setStyle(Paint.Style.STROKE);    innerPaint.setColor(inner_color);    innerPaint.setStrokeCap(Paint.Cap.ROUND);     textPaint = new Paint();    textPaint.setAntiAlias(true);    textPaint.setColor(color);    textPaint.setStyle(Paint.Style.STROKE);    textPaint.setTextSize(textSize);   }   @Override  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {    //super.onMeasure(widthMeasureSpec, heightMeasureSpec);    int widthMode = MeasureSpec.getMode(widthMeasureSpec);    int heightMode = MeasureSpec.getMode(heightMeasureSpec);    if (widthMode == MeasureSpec.AT_MOST){     }else{      width01 = MeasureSpec.getSize(widthMeasureSpec);    }    if (heightMode == MeasureSpec.AT_MOST){     }else{      height01 = MeasureSpec.getSize(heightMeasureSpec);    }    setMeasuredDimension((width01>height01?height01:width01)        ,(width01>height01?height01:width01));  }   @Override  protected void onDraw(Canvas canvas) {    super.onDraw(canvas);    int realWidth = getWidth()>getHeight()?getHeight():getWidth();    int realHeight = getWidth()>getHeight()?getHeight():getWidth();    RectF r1 = new RectF(width/2,width/2,realWidth-width/2        ,realHeight-width/2);    canvas.drawArc(r1,135,270,false,outPaint);    canvas.drawArc(r1,135,270*percent,false,innerPaint);     Rect r = new Rect();    String s = step+"";    textPaint.getTextBounds(s,0,s.length(),r);    int textWidth = r.width();    int textHeight = r.height();    Paint.FontMetricsInt fontMetricsInt = new Paint.FontMetricsInt();    int dy = (fontMetricsInt.bottom-fontMetricsInt.top)/2-fontMetricsInt.bottom;    int baseLine = textHeight/2+dy+realHeight/2-textHeight/2;    int x0 = realWidth/2-textWidth/2;    canvas.drawText(s,x0,baseLine,textPaint);   }   public void setPercent(float percent,float value){    this.percent = percent;    this.step = (int) value;    invalidate();  }  }

<com.example.qq_step.MyQQStep    android:id="@+id/qq_step"    android:layout_width="match_parent"    android:layout_height="match_parent"    app:out_color="@color/colorAccent"    app:border_width="10dp"    app:inner_color="@color/colorPrimary"    app:text_size="20sp"    app:text_color="@color/colorPrimaryDark"    />

 private void initView() {    final MyQQStep qq_view = findViewById(R.id.qq_step);    ValueAnimator animator = ValueAnimator.ofFloat(0,5000);    animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {      @Override      public void onAnimationUpdate(ValueAnimator animation) {        float p = animation.getAnimatedFraction();        qq_view.setPercent(p,5000*p);      }    });    animator.setDuration(10000);    animator.start();   }