notification的简介

package visizen.com.notification;

import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

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

    /**
     * 旧版notification创建方法
     *
     * @param view
     */
    public void click(View view) {
        //System.out.println("old!");
        //获取系统通知管理者
        NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        /**
         * Constructs a Notification object with the information needed to
         * have a status bar icon without the standard expanded view.
         *
         * @param icon          The resource id of the icon to put in the status bar.
         * @param tickerText    The text that flows by in the status bar when the notification first
         *                      activates.
         * @param when          The time to show in the time field.  In the System.currentTimeMillis
         *                      timebase.
         *
         * @deprecated Use {@link Builder} instead.
         */
        Notification n = new Notification(R.drawable.notification, "我是滚动文本！", System.currentTimeMillis());

        n.flags = Notification.FLAG_AUTO_CANCEL;

        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        intent.setData(Uri.parse("http://www.baidu.com"));
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
        //这里编译不过，不知道怎么处理
        //n.setLatestEventInfo(this, "我是大的标题", "我是标题下面的内容", pendingIntent);

        nm.notify(0, n);
    }

    /**
     * 新版notification创建方法
     *
     * @param view
     */
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    public void click2(View view) {
        //System.out.println("new!");
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        intent.setData(Uri.parse("http://www.baidu.com"));
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, 0);


        //1.获取系统通知的管理者
        NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        //2.用notification工厂 创建一个notification
        Notification noti = new Notification.Builder(this)
                .setContentTitle("我是大的标题")
                .setContentText("我是内容")
                .setSmallIcon(R.drawable.notification)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher)).setContentIntent(contentIntent)
                .build();
        //3.把notification显示出来
        nm.notify(1, noti);
    }
}