Android Open Source - FragmentWeixinDemo Draw Image View

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Back to project page FragmentWeixinDemo.

License

The source code is released under:

MIT License

Java Source Code

package com.mostmood.util;
/*from  w w w .  j  a  v  a 2s  .  co m*/
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.widget.ImageView;
import android.graphics.Paint.Style;

public class DrawImageView extends ImageView {

  private final Paint paint;
  private final Context context;

  public DrawImageView(Context context, AttributeSet attrs) {
    super(context, attrs);
    this.context = context;
    this.paint = new Paint();
    this.paint.setAntiAlias(true);
    this.paint.setStyle(Style.STROKE);
  }

  int startAngle = 0;

  @Override
  protected void onDraw(Canvas canvas) {
    int center = getMeasuredWidth() / 2;

    int innerCircle = dip2px(context, 50); // ????????
    int ringWidth = dip2px(context, 5); // ??????

    // ????
    // this.paint.setARGB(155, 167, 190, 206);
    this.paint.setColor(android.graphics.Color.CYAN);
    this.paint.setStrokeWidth(2);
    canvas.drawCircle(center, center, innerCircle, this.paint);

    // ????
    // this.paint.setARGB(255, 212, 225, 233);
    this.paint.setColor(android.graphics.Color.YELLOW);
    this.paint.setStrokeWidth(ringWidth);
    canvas.drawCircle(center, center, innerCircle + 1 + ringWidth / 2,
        this.paint);

    // ????
    // this.paint.setARGB(155, 167, 190, 206);
    this.paint.setColor(android.graphics.Color.CYAN);
    this.paint.setStrokeWidth(2);
    canvas.drawCircle(center, center, innerCircle + ringWidth, this.paint);

    RectF rect2 = new RectF(center - (innerCircle + 1 + ringWidth / 2),
        center - (innerCircle + 1 + ringWidth / 2), center
            + (innerCircle + 1 + ringWidth / 2), center
            + (innerCircle + 1 + ringWidth / 2));

    // this.paint.setARGB(30, 127, 255, 212);
    this.paint.setColor(android.graphics.Color.GRAY);
    this.paint.setStrokeWidth(ringWidth);
    // ?????????
    // canvas.drawArc(rect2, 180 + startAngle, 30, false, paint);
    canvas.drawArc(rect2, 0 + startAngle,10, false, paint);
    // ???????
    // this.paint.setARGB(30, 127, 255, 212);
    // this.paint.setColor(android.graphics.Color.GRAY);
    // canvas.drawArc(rect2, 90 + startAngle, 30, false, paint);
    // canvas.drawArc(rect2, 270 + startAngle, 30, false, paint);

    startAngle += 5;
    if (startAngle == 360)
      startAngle = 0;
    super.onDraw(canvas);
    if (isStart) {
      invalidate();
    }
  }

  private boolean isStart = true;
  Object mObject = new Object();

  public void Start() {
    synchronized (mObject) {
      isStart = true;
      invalidate();
    }
  }

  public void Stop() {
    synchronized (mObject) {
      isStart = false;
      invalidate();
    }
  }

  public static int dip2px(Context context, float dpValue) {
    final float scale = context.getResources().getDisplayMetrics().density;
    return (int) (dpValue * scale + 0.5f);
  }
}

Java Source Code List

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