Android不使用自定义布局情况下实现自定义通知栏图标的方法

PendingIntent contentIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
n.setLatestEventInfo(this, "早上好！", "今天是个晴朗的天气！", contentIntent);

NotificationManager mNM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNM.notify(1001, n);

public void setLatestEventInfo(Context context, 
  CharSequence contentTitle, CharSequence contentText, PendingIntent contentIntent) {
 // TODO: rewrite this to use Builder
 RemoteViews contentView = new RemoteViews(context.getPackageName(), 
   R.layout.notification_template_base);
 if (this.icon != 0) {
  contentView.setImageViewResource(R.id.icon, this.icon);
 }
 if (priority < PRIORITY_LOW) {
  contentView.setInt(R.id.icon, 
    "setBackgroundResource", R.drawable.notification_template_icon_low_bg);
  contentView.setInt(R.id.status_bar_latest_event_content, 
    "setBackgroundResource", R.drawable.notification_bg_low);
 }
 if (contentTitle != null) {
  contentView.setTextViewText(R.id.title, contentTitle);
 }
 if (contentText != null) {
  contentView.setTextViewText(R.id.text, contentText);
 }
 if (this.when != 0) {
  contentView.setViewVisibility(R.id.time, View.VISIBLE);
  contentView.setLong(R.id.time, "setTime", when);
 }
 if (this.number != 0) {
  NumberFormat f = NumberFormat.getIntegerInstance();
  contentView.setTextViewText(R.id.info, f.format(this.number));
 }
 this.contentView = contentView;
 this.contentIntent = contentIntent;
}

Class<?> clazz = Class.forName("com.android.internal.R$id"); 
 Field field = clazz.getField("icon"); 
 field.setAccessible(true); 
 int id_icon = field.getInt(null); 

n.setLatestEventInfo(context, title, msg, contentIntent);
n.flags |= Notification.FLAG_AUTO_CANCEL;
if(n.contentView != null && icon != null){
 n.contentView.setImageViewBitmap(id_icon, icon);
}