  @Override
  protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    super.onSizeChanged(w, h, oldw, oldh);
    mWidth=getWidth();
    mHeight=getHeight();
    mRectF=new RectF((float)(mWidth*0.1), (float)(mHeight*0.1), (float)(mWidth*0.9), (float)(mHeight*0.9));

  }

現(xiàn)在是矩形的背景有了，那么，還有環(huán)形跟文字又怎么去處理呢，別著急，我們先看看這個環(huán)形，我這里之所以定義兩個環(huán)形，是因為，一個用作進度去顯示，一個當做背景去實現(xiàn)，好了，分別繪制兩個環(huán)形。代碼如下：

  canvas.drawArc(mRectF, 90, 360, false, mButtomPaint);
  canvas.drawArc(mRectF, 15, 180, false, mTopPaint);

兩個環(huán)形也有了，接下來就是文字了，繪制文字我們使用canvas.DrawText方法，去繪制，具體代碼如下：

canvas.drawText("5.0", (mWidth-(mTextWidth+mTextSmail))/2, (float)(mHeight/2), mTextPaint);

canvas.drawText("天", (mWidth-(mTextWidth+mTextSmail))/2+mTextWidth, (float)(mHeight/2), mSmailTextPaint);

canvas.drawText("升級年費超級會員立即升至", (mWidth-mTextSmailButtom)/2, (float)(mHeight/2+30), mSmailTextPaint);

這下全部的效果也出來了，最后，我貼上所有的代碼：

public class MyProgress extends View {

  private Paint mButtomPaint;

  private Paint mTopPaint;

  private Paint mTextPaint;

  private Paint mSmailTextPaint;

  private float mWidth;

  private float mHeight;

  private RectF mRectF;


  public MyProgress(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    initView();

  }
  public MyProgress(Context context, AttributeSet attrs) {
    super(context, attrs);
    initView();
  }

  public MyProgress(Context context) {
    super(context);
    initView();
  }

  private void initView() {
    mButtomPaint=new Paint();
    mButtomPaint.setColor(Color.rgb(69, 142, 253));
    mButtomPaint.setAntiAlias(true);
    mButtomPaint.setStrokeWidth(10);
    mButtomPaint.setStyle(Style.STROKE);

    mTopPaint=new Paint();
    mTopPaint.setColor(Color.parseColor("#ffffff"));
    mTopPaint.setAntiAlias(true);
    mTopPaint.setStrokeWidth(10);
    mTopPaint.setStyle(Style.STROKE);

    mTextPaint=new Paint();
    mTextPaint.setColor(Color.WHITE);
    mTextPaint.setAntiAlias(true);
    mTextPaint.setStrokeWidth(5);
    mTextPaint.setTextSize(50);

    mSmailTextPaint=new Paint();
    mSmailTextPaint.setStrokeWidth(3);
    mSmailTextPaint.setColor(Color.WHITE);
    mSmailTextPaint.setAntiAlias(true);
    mSmailTextPaint.setTextSize(15);

  }

  @Override
  protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    super.onSizeChanged(w, h, oldw, oldh);
    mWidth=getWidth();
    mHeight=getHeight();
    mRectF=new RectF((float)(mWidth*0.1), (float)(mHeight*0.1), (float)(mWidth*0.9), (float)(mHeight*0.9));

  }
  @Override
  protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    canvas.drawArc(mRectF, 90, 360, false, mButtomPaint);

    canvas.drawArc(mRectF, 15, 180, false, mTopPaint);

    float mTextWidth=mTextPaint.measureText("5.0");

    float mTextSmail=mSmailTextPaint.measureText("天");

    float mTextSmailButtom=mSmailTextPaint.measureText("升級年費超級會員立即升至");

    canvas.drawText("5.0", (mWidth-(mTextWidth+mTextSmail))/2, (float)(mHeight/2), mTextPaint);

    canvas.drawText("天", (mWidth-(mTextWidth+mTextSmail))/2+mTextWidth, (float)(mHeight/2), mSmailTextPaint);

    canvas.drawText("升級年費超級會員立即升至", (mWidth-mTextSmailButtom)/2, (float)(mHeight/2+30), mSmailTextPaint);

  }


}

謝謝閱讀。

以上就是本文的全部內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持腳本之家。

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