Android笔记之Notification使用

1、普通Notification和自定义布局的Notification：

(1)如果不是在activity显示通知，但有传context，则
 manager=(NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);

package com.example.mynotification;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RemoteViews;

public class MainActivity extends Activity {

    private Button button,button2;
    //别忘了实例化NotificationManager，Notification.Builder 
    //二者通过Notification notification=builder.build();以及
    //NotificationManager.notify(int id, Notification notification)
    private NotificationManager manager;
    Notification.Builder builder;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = (Button) findViewById(R.id.button1);
        button2 = (Button) findViewById(R.id.button2);
        //实例化NotificationManager
        manager=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        //实例化Builder
        builder=new Notification.Builder(MainActivity.this);
        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                // Notification.Builde->Notification->NotificationManager
                // 图标，标题，消息，PenddIngntent
                Intent intent = new Intent(MainActivity.this,
                        MainActivity.class);
                PendingIntent pendingIntent = PendingIntent.getActivity(
                        MainActivity.this, 0, intent, 0);
                //点击通知跳转的pendingIntent
                builder.setContentIntent(pendingIntent);
                //通知的标题
                builder.setContentTitle("标题");
                //通知的正文文本
                builder.setContentText("你好啊！");
                //状态栏上的图标以及拉下之后左侧的图标，必不可少
                builder.setSmallIcon(R.drawable.noticon);
                //第一次产生提醒时会显示的文本
                builder.setTicker("普通通知");
                //设置消息提醒默认的设置
                //默认震动；震动需要添加用户权限
                //默认闪光
                //默认铃声
                builder.setDefaults(Notification.DEFAULT_ALL);
                Notification notification=builder.build();
                //设置使点击后通知消失
                notification.flags=Notification.FLAG_AUTO_CANCEL;
                // 1000为id数值，唯一标识
                manager.notify(1, notification);
            }
        });
        button2.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Notification.Builder builder=new Notification.Builder(MainActivity.this);
                RemoteViews remoteViews=new RemoteViews(getPackageName(),R.layout.mynoti);
                remoteViews.setTextViewText(R.id.textView1, "自定义通知！");
                Intent intent = new Intent(MainActivity.this,
                        MainActivity.class);
                PendingIntent pendingIntent = PendingIntent.getActivity(
                        MainActivity.this, 0, intent, 0);
                //指定Intent
                builder.setContentIntent(pendingIntent);
                //自定义布局
                builder.setContent(remoteViews);
                //设置图标必不可少
                builder.setSmallIcon(R.drawable.noticon);
                builder.setTicker("自定义通知");
                Notification notification=builder.build();
                manager.notify(5, notification);
            }
        });
    }

}

自定义的布局：mynoti.xml

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

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/button1"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="TextView"
        android:textColor="#669966"
        android:textSize="25dp" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="28dp"
        android:text="开始" />

</RelativeLayout>

Done!