Android-系统自带通知栏and自定义通知栏

public void sendNotification(View view){
//實例化通知管理器
NotificationManager notificationManager= (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
//實例化通知
NotificationCompat.Builder builder=new NotificationCompat.Builder(this);
builder.setContentTitle("系統消息");
builder.setContentText("來自系統的消息");
builder.setDefaults(NotificationCompat.DEFAULT_ALL);
builder.setSmallIcon(android.R.drawable.ic_media_play);
builder.setContentIntent(PendingIntent.getActivity(this,0x102,new Intent(this,RingActivity.class),0));

Notification notification=builder.build();
//發出通知.
notificationManager.notify(0x101,notification);
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<ImageView
android:id="@+id/imageView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
/>
<TextView
android:id="@+id/textView1"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:clickable="true"
/>
<TextView
android:id="@+id/textView2"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
/>
</LinearLayout>

package com.example.android_alarmandnotification;

import android.os.Bundle;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.graphics.Color;
import android.widget.RemoteViews;;
import android.content.Context;
import android.content.Intent;
public class NotifictionActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Notification notification = new Notification();
//设置图标，后面的自定义布局的图片会覆盖它，但还是得设置，不然不会显示到通知栏
notification.icon = android.R.drawable.ic_media_play;
notification.tickerText = "来信息啦";
notification.when = System.currentTimeMillis();
notification.flags = Notification.FLAG_AUTO_CANCEL;
//传入当前项目的包名，和你通知栏上要显示的自定义布局的ID
RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.activity_notifiction);
//下面都是设置通知栏布局里面控件的属性
remoteViews.setImageViewResource(R.id.imageView1, android.R.drawable.ic_media_play);
remoteViews.setTextColor(R.id.textView1, Color.RED);
remoteViews.setTextViewText(R.id.textView1, "今日头条");
//	PendingIntent有4种flag.
//	- FLAG_ONE_SHOT 只执行一次
//	- FLAG_NO_CREATE 若描述的Intent不存在则返回NULL值
//	- FLAG_CANCEL_CURRENT 如果描述的PendingIntent已经存在，则在产生新的Intent之前会先取消掉当前的
//	- FLAG_UPDATE_CURRENT 总是执行,这个flag用的最多
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, MainActivity.class),
PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.textView1, pendingIntent);
notification.contentView = remoteViews;
notification.contentIntent = pendingIntent;
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.notify(1, notification);
}
}