Notification 简介

public class MainActivity extends Activity {
	private Spinner spinner = null;
	private NotificationManager notificationManager = null;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		spinner = (Spinner) findViewById(R.id.spinner1);
		ArrayAdapter spinnerAdapter = ArrayAdapter.createFromResource(
				MainActivity.this, R.array.spinnerItems,
				android.R.layout.simple_spinner_item);
		spinnerAdapter
				.setDropDownViewResource(android.R.layout.simple_list_item_checked);
		spinner.setAdapter(spinnerAdapter);
		spinner.setSelection(1, true);
		spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

			@Override
			public void onItemSelected(AdapterView<?> arg0, View arg1,
					int arg2, long arg3) {
				// TODO Auto-generated method stub
				if (arg0.getItemAtPosition(arg2).toString().equals("Online")) {
					showNotification("Online");
				} else {
					// showNotification("Outline");
					showDefinedNotifications();
				}

			}

			@Override
			public void onNothingSelected(AdapterView<?> arg0) {
				// TODO Auto-generated method stub

			}
		});

	}

	/**
	 * 显示系统预定义的通知栏
	 * 
	 * @param string
	 */
	private void showNotification(String string) {
		notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
		Notification notification = new Notification();
		notification.when = System.currentTimeMillis();
		notification.tickerText = "show";// notification刚刚生成时弹出的提示文字
		notification.icon = R.drawable.acc_on;
		notification.flags = Notification.FLAG_AUTO_CANCEL;// 可以清除

		// notification.defaults = Notification.DEFAULT_VIBRATE;//添加震动，记得加权限
		// long[] vibrate = {0,100,200,300};
		// notification.vibrate = vibrate;

		Intent intent = new Intent(MainActivity.this, MainActivity.class);
		// intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_NEW_TASK);
		PendingIntent pendingIntent = PendingIntent
				.getActivity(MainActivity.this, 0, intent,
						PendingIntent.FLAG_UPDATE_CURRENT);

		notification.setLatestEventInfo(MainActivity.this, "Notification_test",
				string, pendingIntent);
		notificationManager.notify(1, notification);

	}

	/**
	 * 显示自定义的通知栏
	 * 使用自定义的点击通知后才会消失。
	 */
	private void showDefinedNotifications() {
		notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
		Notification notification = new Notification(R.drawable.acc_on, "有提示！",
				System.currentTimeMillis());
		Intent intent = new Intent(MainActivity.this, MainActivity.class);
		notification.flags = Notification.FLAG_AUTO_CANCEL;
		PendingIntent pendingIntent = PendingIntent
				.getActivity(MainActivity.this, 0, intent,
						PendingIntent.FLAG_UPDATE_CURRENT);
		RemoteViews remoteViews = new RemoteViews(getPackageName(),
				R.layout.notification_items);
		remoteViews.setImageViewResource(R.id.imageView1, R.drawable.ic_launcher);
		remoteViews.setTextViewText(R.id.tx_content, "我是自定义的Notification");
		notification.contentView = remoteViews;
		notification.contentIntent = pendingIntent;
		notificationManager.notify(1, notification);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.activity_main, menu);
		return true;
	}

	@Override
	protected void onResume() {
		// TODO Auto-generated method stub

		super.onResume();
	}
}

自定义的R.layout.notification_items：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

  
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_launcher" />

        <TextView
            android:id="@+id/tx_content"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:textAppearance="?android:attr/textAppearanceMedium" />

    </LinearLayout>

</LinearLayout>

 自定义数组array.xml：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="spinnerItems">
      <item>Online</item>
      <item>Outline</item>
    </string-array>
    
</resources>

 结构图：