Notification

public class ActivityMainNotification extends Activity {
	private static int NOTIFICATIONS_ID = R.layout.activity_notification;
	private NotificationManager mNotificationManager;

	
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_notification);

		Button button;

		//所有的Notification都是由NotificationManager来管理,所以,
		//第一步应该得到一个NotificationManager的实例,以便管理在这个Activity中的Notification
		//:mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
		
		mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

		button = (Button) findViewById(R.id.sun_1);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				setWeather("晴空万里", "天气预报", "晴空万里", R.drawable.sun);
			}
		});

		button = (Button) findViewById(R.id.cloudy_1);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				setWeather("阴雨密布", "天气预报", "阴雨密布", R.drawable.cloudy);
			}
		});

		button = (Button) findViewById(R.id.rain_1);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				setWeather("大雨连绵", "天气预报", "大雨连绵", R.drawable.rain);
			}
		});

		button = (Button) findViewById(R.id.defaultSound);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				setDefault(Notification.DEFAULT_SOUND);
				//DEFAULT_SOUND表示当前的这个Notification显示出来的时候,手机同时会伴随着音乐
			}
		});

		button = (Button) findViewById(R.id.defaultVibrate);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				setDefault(Notification.DEFAULT_VIBRATE);
				//DEFAULT_VIBRATE表示当前的这个Notification显示出来的时候,手机同时会伴随着振动
			}
		});

		button = (Button) findViewById(R.id.defaultAll);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				setDefault(Notification.DEFAULT_ALL);
				//DEFAULT_ALL表示当前的这个Notification显示出来的时候,手机同时会伴随着振动和音乐
			}
		});

		button = (Button) findViewById(R.id.clear);
		button.setOnClickListener(new Button.OnClickListener() {
			public void onClick(View v) {
				mNotificationManager.cancel(NOTIFICATIONS_ID);
			}
		});

	}

	private void setWeather(String tickerText, String title, String content,
			int drawable) {

		//第一个参数为要显示的id,第二个参数为显示的文本文字,第三个参数为Notification显示的时间,一般是立即显示
		Notification notification = new Notification(drawable, tickerText,
				System.currentTimeMillis());
		//System.currentTimeMillis()函数得到系统的当前时间

		PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
				new Intent(this, ActivityMain.class), 0);

		notification.setLatestEventInfo(this, title, content, contentIntent);

		mNotificationManager.notify(NOTIFICATIONS_ID, notification);
	}

	private void setDefault(int defaults) {

		PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
				new Intent(this, ActivityMain.class), 0);

		String title = "天气预报";
		String content = "晴空万里";

		final Notification notification = new Notification(R.drawable.sun,
				content, System.currentTimeMillis());

		notification.setLatestEventInfo(this, title, content, contentIntent);

		notification.defaults = defaults;

		mNotificationManager.notify(NOTIFICATIONS_ID, notification);
	}
}

activity_notification.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
            
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content">
        
            <Button
                android:id="@+id/sun_1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="晴空万里" />
        
            <Button
                android:id="@+id/cloudy_1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="阴云密布" />
                
              <Button
                android:id="@+id/rain_1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="大雨连绵" />
                
        </LinearLayout>
        
         <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dip"
            android:text="高级的notification" />

        <LinearLayout
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content">
        
            <Button
                android:id="@+id/defaultSound"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="发声的notification" />
        
            <Button
                android:id="@+id/defaultVibrate"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="振动的notification" />
                
              <Button
                android:id="@+id/defaultAll"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="既发声又振动的notification" />
                
        </LinearLayout>
        
        <Button android:id="@+id/clear"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dip"
            android:text="清除notification" />
            
    </LinearLayout>

</ScrollView>