/**

• @author Jaesoon
• @version 创建时间：2016年7月6日 下午2:32:54
  */

import android.animation.Keyframe;
import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Cap;
import android.support.v4.view.animation.FastOutSlowInInterpolator;
import android.util.AttributeSet;
import android.view.View;

/**

• @author Jaesoon
  */
  public class PercentProgressView extends View {

  private float percent = 0f;
  private int progressColor = 0xFFEF831E;
  private Paint p;

  /**

  • @param context context
    */
    public PercentProgressView(Context context) {
    super(context);

    p = new Paint();
    }

  /**

  • @param context context

  • @param attrs attrs
    */
    public PercentProgressView(Context context, AttributeSet attrs) {
    super(context, attrs);

    p = new Paint();
    }

  /**

  • @param context context

  • @param attrs attrs

  • @param defStyle defStyle
    */
    public PercentProgressView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.db_percent_progress);
    int n = a.getIndexCount();

    for (int i = 0; i < n; i++) {
    int attr = a.getIndex(i);
    switch (attr) {
    case 0:
    percent = a.getFloat(attr, 25f);
    break;
    case 1:
    progressColor = a.getColor(attr, Color.RED);
    break;
    }
    }
    a.recycle();
    p = new Paint();
    }

  @Override
  protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  int width = getMeasuredWidth();
  int height = getMeasuredHeight();
  /* 创建画笔 */

   /* 充满 */
   p.setStyle(Paint.Style.FILL);
   /* 设置画笔的锯齿效果 */
   p.setAntiAlias(true);
   p.setStrokeWidth(height);
   p.setStrokeCap(Cap.ROUND);
   // 先画底图
   p.setColor(0xFFD5D5D5);
   canvas.drawLine(height / 2, height / 2, width - height / 2, height / 2, p);
  
   if (width * percent / 100 - height / 2 > 0) {
       p.setColor(progressColor);
       canvas.drawLine(height / 2, height / 2, width * percent / 100 - height / 2, height / 2, p);
   }
  

  }

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
  super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  }

  public float getPercent() {
  return percent;
  }

  public void setPercent(float percent) {
  if (percent > 100) {
  percent = 100;
  } else if (percent < 0) {
  percent = 0;
  }
  this.percent = percent;
  invalidate();
  }

  /**

  • 设置当前的百分比
    */
    public void setCurrentPercent(float percent) {
    Keyframe keyframe1 = Keyframe.ofFloat(0, 0);
    Keyframe keyframe2 = Keyframe.ofFloat(1, percent);
    PropertyValuesHolder holder = PropertyValuesHolder.ofKeyframe("percent", keyframe1, keyframe2);

    ObjectAnimator animator = ObjectAnimator.ofPropertyValuesHolder(this, holder);
    animator.setDuration(2000);
    animator.setInterpolator(new FastOutSlowInInterpolator());
    animator.setStartDelay(100);
    animator.start();
    }
    }