ViewHolder.java 文件源码

@SuppressLint("NewApi")
public ViewHolder setAlpha(int viewId, float value)
{
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB)
    {
        getView(viewId).setAlpha(value);
    } else
    {
        // Pre-honeycomb hack to set Alpha value
        AlphaAnimation alpha = new AlphaAnimation(value, value);
        alpha.setDuration(0);
        alpha.setFillAfter(true);
        getView(viewId).startAnimation(alpha);
    }
    return this;
}