java 找不到符号 NOTIFICATION_SERVICE？
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时间：2020-10-30 17:32:55 来源:igfitidea点击:
Cannot find symbol NOTIFICATION_SERVICE?
提问by mrburns
package com.test.app;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class runOnBoot extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
}
}
When I try to build the package, it says
当我尝试构建包时，它说
compile:
[javac] Compiling 2 source files to /home/mrburns/Desktop/myapp/bin/classes
[javac] /home/mrburns/Desktop/myapp/src/com/test/app/runOnBoot.java:14: cannot find symbol
[javac] symbol : variable NOTIFICATION_SERVICE
[javac] location: class runOnBoot
[javac] NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
[javac] ^
[javac] 1 error
BUILD FAILED
回答by mcchots
I found calling this way works:
我发现这样调用有效：
NotificationManager nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
回答by Shlublu
This should be Context.NOTIFICATION_SERVICE:
这应该是Context.NOTIFICATION_SERVICE：
NotificationManager nm = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
回答by Luís Ledebour
NotificationManager mNotifyMgr = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
回答by Shah
You should better try this
你最好试试这个
NotificationManager nm = (NotificationManager)getSystemService(getApplicationContext().NOTIFICATION_SERVICE);
