我有以下代码用于Android应用程序:
package com.authorwjf.e_notifications;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
public class Main extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Bitmap bm = Bitmap.createScaledBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.avatar),
getResources().getDimensionPixelSize(android.R.dimen.notification_large_icon_width),
getResources().getDimensionPixelSize(android.R.dimen.notification_large_icon_height),
true);
Intent intent = new Intent(this, Main.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 01, intent, Intent.FLAG_ACTIVITY_CLEAR_TASK);
Notification.Builder builder = new Notification.Builder(getApplicationContext());
builder.setContentTitle("This is the title");
builder.setContentText("This is the text");
builder.setSubText("Some sub text");
builder.setNumber(101);
builder.setContentIntent(pendingIntent);
builder.setTicker("Fancy Notification");
builder.setSmallIcon(R.drawable.ic_launcher);
builder.setLargeIcon(bm);
builder.setAutoCancel(true);
builder.setPriority(0);
Notification notification = builder.build();
NotificationManager notificationManger =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManger.notify(01, notification);
}
}
基本上推出的应用会创建通知,现在我有几个问题:
是否可以显示红色圆圈图标?最后,我想创建一个只停留在下拉通知中的服务。
我是Android dev的新手,只是试图掌握我可以用通知做什么。
由于
答案 0 :(得分:46)
A1:要删除状态栏图标,请使用此技巧:
builder.setSmallIcon(android.R.color.transparent); //Tested and worked in API 14
A2:要制作持续通知,请添加以下行:
builder.setOngoing(true)
答案 1 :(得分:2)
看看ongoing event flag。我相信这可以创建类似于系统的wifi和USB连接通知的持续通知。