Android Notification 通知栏

private void showNotification() {
// 消息通知栏
// 定义NotificationManager
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
// 定义通知栏展现的内容信息
int icon = R.drawable.ic_launcher;
CharSequence tickerText = "我的通知栏标题";
long when = System.currentTimeMillis();
Notification notification = new Notification(icon, tickerText, when);

// 定义下拉通知栏时要展现的内容信息
Context context = getApplicationContext();
CharSequence contentTitle = "我的通知栏标展开标题";
CharSequence contentText = "我的通知栏展开详细内容";
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

// 用mNotificationManager的notify方法通知用户生成标题栏消息通知
mNotificationManager.notify(1, notification);
}

private void showNotification() {
NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Intent intent = new Intent(this, MainActivity.class);
PendingIntent pd = PendingIntent.getActivity(MainActivity.this, 0, intent, 0);

// 自定义下拉视图，比如下载软件时，显示的进度条。
Notification notification = new Notification();
notification.icon = R.drawable.ic_launcher;
notification.tickerText = "Custom!";

RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.notify_view);
contentView.setImageViewResource(R.id.imageView_icon, R.drawable.ic_launcher);
contentView.setTextViewText(R.id.textView_title, "湖北新闻广播");
contentView.setTextViewText(R.id.textView_msg, "播放中");
notification.contentView = contentView;

// 使用自定义下拉视图时，不需要再调用setLatestEventInfo()方法
// 但是必须定义 contentIntent
notification.contentIntent = pd;
nm.notify(3, notification);
// nm.cancel(id);
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="3dp" >

<ImageView
android:id="@+id/imageView_icon"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_centerVertical="true"
android:layout_marginRight="10dp" />

<RelativeLayout
android:id="@+id/relativeLayout_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toRightOf="@+id/imageView_icon" >

<TextView
android:id="@+id/textView_title"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:textColor="#FFF" />

<TextView
android:id="@+id/textView_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView_title" />
</RelativeLayout>

<ImageButton
android:id="@+id/button_notification_play"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="@color/transparent"
android:src="@drawable/play" />

</RelativeLayout>