我有一个Android应用程序。我想在用户设置的五个不同时间生成五个通知。如果我的应用程序将无法运行，则会产生通知...我该怎么做？
在下面的类中，我在oncreate（）中将db通知值与无限while循环中的设备时间进行比较.res1，res2 ... res5是存储在db.day4中的五个通知时间是系统时间...
MyService.java
ppublic class MyService extends Service {
private static final String DATABASE_NAME = "MYPRAYER.db";
private static final String DATABASE_TABLE = "notification";
String tag="TestService";
String a="hello";
String res1,res2,res3,res4,res5;
int hour,minute;
String day3,day4,minute1,hour1;
MediaPlayer mMediaPlayer;
/* Service creation */
@Override
public void onCreate() {
super.onCreate();
Toast.makeText(this, "Service created...", Toast.LENGTH_LONG).show();
Log.i(tag, "Service created...");
/* Rereive notification times from the databse notificaion */
SQLiteDatabase myDB;
myDB = openOrCreateDatabase(DATABASE_NAME, Context.MODE_PRIVATE, null);
String[] resultColumns = new String[] {"fajr","zuhr","asr","magrib","isha"};
Cursor allRows = myDB.query(DATABASE_TABLE, resultColumns, null, null, null, null, null, null);
Integer cindex = allRows.getColumnIndex("fajr");
Integer cindex1 = allRows.getColumnIndex("zuhr");
Integer cindex2 = allRows.getColumnIndex("asr");
Integer cindex3 = allRows.getColumnIndex("magrib");
Integer cindex4 = allRows.getColumnIndex("isha");
allRows.moveToFirst();
res1=allRows.getString(cindex);
res2=allRows.getString(cindex1);
res3=allRows.getString(cindex2);
res4=allRows.getString(cindex3);
res5=allRows.getString(cindex4);
myDB.close();
while(!Thread.currentThread().isInterrupted())
{
try
{
Calendar cal = Calendar.getInstance(); // Rereive calender date
hour = cal.get(Calendar.HOUR_OF_DAY); // Take hour from the calender
minute = cal.get(Calendar.MINUTE); // Take minute from the calender
minute1=minute + ""; // Convert minute to dtring
if(minute1.equals("1"))
{
minute1="01";
}
else if(minute1.equals("2"))
{
minute1="02";
}
else if(minute1.equals("3"))
{
minute1="03";
}
else if(minute1.equals("4"))
{
minute1="04";
}
else if(minute1.equals("5"))
{
minute1="05";
}
else if(minute1.equals("6"))
{
minute1="06";
}
else if(minute1.equals("7"))
{
minute1="07";
}
else if(minute1.equals("8"))
{
minute1="08";
}
else if(minute1.equals("9"))
{
minute1="09";
}
/* Converting to 12 hour format */
if ( hour < 12 )
{
hour=hour;
day3=hour + "" + ":" + minute1;
day4=day3 + " " + "AM"; // DAY4 Contains the system time
}
else
{
hour=hour-12;
day3=hour + "" + ":" + minute1;
day4=day3 + " " + "PM";
}
if(day4.equals(res1))
{
Notification("Notification Title","Notification Message");
}
if(day4.equals(res2))
{
Notification("Notification Title","Notification Message");
}
if(day4.equals(res3))
{
Notification("Notification Title","Notification Message");
}
if(day4.equals(res4))
{
Notification("Notification Title","Notification Message");
}
if(day4.equals(res5))
{
Notification("Notification Title","Notification Message");
}
Thread.sleep(1000);
}
catch (InterruptedException e)
{
Thread.currentThread().interrupt();
//System.out.println("New 1 Exception here");
}
catch (Exception e)
{
//Thread.currentThread().interrupt();
System.out.println("nEW Exception here");
}
}
}
@Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
Log.i(tag, "Service started...");
}
@Override
public void onDestroy() {
super.onDestroy();
Toast.makeText(this, "Service destroyed...", Toast.LENGTH_LONG).show();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
private void Notification(String notificationTitle, String notificationMessage)
{
NotificationManager notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
Notification notification = new Notification(R.drawable.ic_launcher, "A New Message!", System.currentTimeMillis());
Intent notificationIntent = new Intent(this,MyService.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(MyService.this, notificationTitle, notificationMessage, pendingIntent);
notificationManager.notify(10001, notification);
//HELLO_ID++;
Uri alert = RingtoneManager.getDefaultUri(
RingtoneManager.TYPE_NOTIFICATION);
mMediaPlayer = new MediaPlayer();
try
{
mMediaPlayer.setDataSource(this, alert);
AudioManager audioManager = (AudioManager)getSystemService(
Context.AUDIO_SERVICE);
int volumen = audioManager.getStreamVolume(
AudioManager.STREAM_NOTIFICATION);
if (volumen != 0) {
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_NOTIFICATION);
mMediaPlayer.setLooping(true);
mMediaPlayer.prepare();
mMediaPlayer.start();
}
}
catch(IOException e)
{
System.out.println("Exception here");
//System.out.println("Exception 1 here");
}
}
}
logcat的：
07-27 16：25：00.542：I / TestService（363）：已创建服务... 07-27 16：25：20.752：I / dalvikvm（363）：threadid = 7：对信号3作出反应 07-27 16：25：20.803：I / dalvikvm（363）：将堆栈跟踪写入'/data/anr/traces.txt'
答案 0 :(得分：0)
我所做的是使用AlarmManager触发BroadcastReceiver来设置通知。所以在Android文档上搜索一下。关于那些东西也有很多资源。其他人也可能会告诉您不要使用BroadcastReceiver，而是使用Service。说实话，它可以双向进行，所以你做出的任何选择都应该没问题。至于通知，您可以轻松地通过Google通知查找相关资源。搜索状态通知。