Android 中的 ProgressBar拥有很多样式，本文针对自定义进度条背景及进度样式设置抛砖引玉。先看看效果
先定义一个带progressBar的布局，代码如下：1
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18 RelativeLayout rl = new RelativeLayout(this);
ProgressBar mProgressBar = new ProgressBar(this,null,android.R.drawable.progress_horizontal);// 下载进度条
RelativeLayout.LayoutParams mProgressBarParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, 20);
mProgressBarParams.setMargins(10, 10, 10, 10);
mProgressBar.setLayoutParams(mProgressBarParams);
mProgressBarParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
mProgressBarParams.addRule(RelativeLayout.CENTER_VERTICAL);
// BeanUtils.setFieldValue(mProgressBar, "mOnlyIndeterminate", new Boolean(false));
mProgressBar.setIndeterminate(false);
// mProgressBar.setProgressDrawable(getResources().getDrawable(android.R.drawable.progress_horizontal));
** mProgressBar.setProgressDrawable(getProgressBarLayerDrawable());**
// mProgressBar.setIndeterminateDrawable(getResources().getDrawable(android.R.drawable.progress_indeterminate_horizontal));
mProgressBar.setMax(100);
mProgressBar.setBackgroundColor(Color.argb(10, 11, 11, 11));
rl.addView(mProgressBar);
setContentView(rl);
mProgressBar.setProgress(20);
