LoadView

 public void downLoad(View view) {
 new TimeDown(12*1000,1000).start();
 }
 private class TimeDown extends CountDownTimer{
 private float i=0;
 /**
 * @param millisInFuture The number of millis in the future from the call
 * to {@link #start()} until the countdown is done and {@link #onFinish()}
 * is called.
 * @param countDownInterval The interval along the way to receive
 * {@link #onTick(long)} callbacks.
 */
 public TimeDown(long millisInFuture, long countDownInterval) {
 super(millisInFuture, countDownInterval);
 i=0;
 loadView.setPercent(0);
 }
 @Override
 public void onTick(long millisUntilFinished) {
 Log.i("lx","onTick"+millisUntilFinished);
 loadView.setPercent(i);
 i=i+0.083333f;
 }
 @Override
 public void onFinish() {
 loadView.setPercent(1f);
 }
 }

 <declare-styleable name="LoadView">
 <!-- 已经load的颜色值-->
 <attr name="HasLoadColor" format="color" />
 <!-- 没有load的颜色值-->
 <attr name="NormalLoadColor" format="color" />
 <!-- 小长方形的宽度-->
 <attr name="RectangleWidth" format="dimension" />
 <!-- 小长方形的高度-->
 <attr name="RectangleHeight" format="dimension" />
 <!-- 小长方形的个数-->
 <attr name="RectangleNum" format="integer" />
 <!-- 内半径大小-->
 <attr name="InnerRadius" format="dimension" />
 <!-- 文字大小-->
 <attr name="TextSize" format="dimension" />
 <!-- 小长方形圆角度-->
 <attr name="RectangleRadius" format="dimension" />
 </declare-styleable>