Android开发之进度条ProgressBar的示例代码

//xml中
  <ProgressBar
  android:layout_width="wrap_content"
  android:layout_height="wrap_content" />

  //代码中控制显隐藏
  mProgressBar = (ProgressBar) findViewById(R.id.progress_bar_main);
  mProgressBar.setVisibility(View.VISIBLE);

//xml中
  <ProgressBar
  android:id="@+id/progress_bar_h"
  style="?android:attr/progressBarStyleHorizontal"
  android:layout_width="85dp"
  android:layout_height="10dp"
  android:layout_gravity="center"
  android:max="100"
  android:progress="50"
  />

<?xml version="1.0" encoding="UTF-8"?>
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<!-- 设置背景色 -->
<item android:id="@android:id/background"
  android:drawable="@mipmap/feed_grow_progress_bar">
</item>

<!-- 设置进度条颜色 -->
<item android:id="@android:id/progress">
  <clip>
    <shape>

      <gradient
        android:endColor="#fff000"
        android:startColor="#fff000" />
    </shape>
  </clip>
</item>
</layer-list>

<ProgressBar
  android:id="@+id/progress_bar_healthy"
  style="?android:attr/progressBarStyleHorizontal"
  android:layout_width="85dp"
  android:layout_height="10dp"
  android:layout_marginTop="20dp"
  android:layout_gravity="center"
  android:max="100"
  android:progress="50"
  android:progressDrawable="@drawable/progressbar_bg"
  />

private void setElectircProgress(int i, int color) {
  ClipDrawable drawable = new ClipDrawable(new ColorDrawable(color), Gravity.LEFT, ClipDrawable.HORIZONTAL);
  progressBarElectric.setProgressDrawable(drawable);
  progressBarElectric.setProgress(i);
}

musicProgressBar = (ProgressBar) findViewById(R.id.progress_bar_music);

  if (mPlayer != null) {
    mPlayer.release();
    mPlayer = null;
  }
  mPlayer = MediaPlayer.create(this, R.raw.summer);
  mPlayer.start();
  musicProgressBar.setMax(mPlayer.getDuration());
  if (timer != null) {
    timer = null;
    timerTask = null;
  }
  timer = new Timer();
  timerTask = new TimerTask() {
    @Override
    public void run() {
      if (mPlayer != null) {
        if (mPlayer.isPlaying()) {
          runOnUiThread(new Runnable() {
            @Override
            public void run() {
              musicProgressBar.setProgress(mPlayer.getCurrentPosition());
            }
          });
        }
      }
    }
  };
  timer.schedule(timerTask, 0, 1000);