系统自带通知栏:在布局文件中写一个button,写一个sendNotification方法html
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); }
自定义通知栏:android
布局文件:app
<?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,但仍是得设置,否则不会显示到通知栏 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 若是描述的PendingIntent已经存在,则在产生新的Intent以前会先取消掉当前的 // - FLAG_UPDATE_CURRENT 老是执行,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); } }