如果用户不活动3天，如何发送通知 [英] How to send notification if user inactive for 3 days
问题描述
我正在开发一个Android应用程序，如果用户闲置超过3天，我想向其发送我们想念您"通知.这意味着如果用户在3天内没有打开我们的应用，我想向他们发送我们想念您"的通知就像《猎鹿人》和《神庙逃亡》一样谢谢:)
I am developing an android app and I want to send "We Miss You" notification to user if he/she is inactive for more than 3 days. This means if the user does not open our app for 3 days I want to send them a notification of "We Miss you" Like Deer Hunter and Temple Run sends Thank you :)
推荐答案
您要设置一个每天启动一次短期运行服务的警报.该服务所要做的只是检查上次使用的共享首选项之类的内容.如果该时间已超过3天，则该服务会发送通知.无论哪种方式，服务都将退出.
You want to set an alarm that starts a short-running service once per day. All that service does is to check something like a shared preference for the last-used-time. If that time is more than 3 days old, then the service sends a notification. Either way, the service then exits.
或者，您的应用可以在每次运行时提交一条警报，该警报的定义为在3天内触发，并定义为使用相同的ID替换所有先前存在的警报.该警报将被定义为打开发送通知的短期服务.
Alternatively, your app could submit an alarm, each time it runs, that is defined to fire in 3 days and defined to replace any pre-existing alarm with the same ID. That alarm would be defined to open a short-running service that sends a notification.
这里有一些示例代码演示了第二种方法.如所写，它仅在启动时更新运行时间.如果您的应用程序长时间运行，则需要定期调用 recordRunTime().如果将Notification.Builder对象替换为NotificationCompat.Builder，则不推荐使用的方法 getNotification()可以替换为 build().您可以将带注释的行用于 delay ，以较短的延迟时间进行测试.
Here's some sample code that demonstrates the second approach. As written, it only updates the run time upon start-up. If your app is long-running, you'll want to call recordRunTime() periodically. The deprecated method getNotification() could be replaced with build() if the Notification.Builder object was replaced with a NotificationCompat.Builder. You can use the commented out line for delay to test with a shorter delay time.
package com.example.comeback;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
public class MainActivity extends Activity {
private final static String TAG = "MainActivity";
public final static String PREFS = "PrefsFile";
private SharedPreferences settings = null;
private SharedPreferences.Editor editor = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
// Save time of run:
settings = getSharedPreferences(PREFS, MODE_PRIVATE);
editor = settings.edit();
// First time running app?
if (!settings.contains("lastRun"))
enableNotification(null);
else
recordRunTime();
Log.v(TAG, "Starting CheckRecentRun service...");
startService(new Intent(this, CheckRecentRun.class));
}
public void recordRunTime() {
editor.putLong("lastRun", System.currentTimeMillis());
editor.commit();
}
public void enableNotification(View v) {
editor.putLong("lastRun", System.currentTimeMillis());
editor.putBoolean("enabled", true);
editor.commit();
Log.v(TAG, "Notifications enabled");
}
public void disableNotification(View v) {
editor.putBoolean("enabled", false);
editor.commit();
Log.v(TAG, "Notifications disabled");
}
}
package com.example.comeback;
import android.app.AlarmManager;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.IBinder;
import android.util.Log;
public class CheckRecentRun extends Service {
private final static String TAG = "CheckRecentPlay";
private static Long MILLISECS_PER_DAY = 86400000L;
private static Long MILLISECS_PER_MIN = 60000L;
// private static long delay = MILLISECS_PER_MIN * 3; // 3 minutes (for testing)
private static long delay = MILLISECS_PER_DAY * 3; // 3 days
@Override
public void onCreate() {
super.onCreate();
Log.v(TAG, "Service started");
SharedPreferences settings = getSharedPreferences(MainActivity.PREFS, MODE_PRIVATE);
// Are notifications enabled?
if (settings.getBoolean("enabled", true)) {
// Is it time for a notification?
if (settings.getLong("lastRun", Long.MAX_VALUE) < System.currentTimeMillis() - delay)
sendNotification();
} else {
Log.i(TAG, "Notifications are disabled");
}
// Set an alarm for the next time this service should run:
setAlarm();
Log.v(TAG, "Service stopped");
stopSelf();
}
public void setAlarm() {
Intent serviceIntent = new Intent(this, CheckRecentRun.class);
PendingIntent pi = PendingIntent.getService(this, 131313, serviceIntent,
PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + delay, pi);
Log.v(TAG, "Alarm set");
}
public void sendNotification() {
Intent mainIntent = new Intent(this, MainActivity.class);
@SuppressWarnings("deprecation")
Notification noti = new Notification.Builder(this)
.setAutoCancel(true)
.setContentIntent(PendingIntent.getActivity(this, 131314, mainIntent,
PendingIntent.FLAG_UPDATE_CURRENT))
.setContentTitle("We Miss You!")
.setContentText("Please play our game again soon.")
.setDefaults(Notification.DEFAULT_ALL)
.setSmallIcon(R.drawable.ic_launcher)
.setTicker("We Miss You! Please come back and play our game again soon.")
.setWhen(System.currentTimeMillis())
.getNotification();
NotificationManager notificationManager
= (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(131315, noti);
Log.v(TAG, "Notification sent");
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
main_activity_layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="enableNotification"
android:text="@string/enable" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="disableNotification"
android:text="@string/disable" />
</LinearLayout>
strings.xml:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Come Back</string>
<string name="enable">Enable Notifications</string>
<string name="disable">Disable Notifications</string>
</resources>
AndroidManifest.com:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.comeback"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.VIBRATE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.comeback.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name="com.example.comeback.CheckRecentRun" >
</service>
</application>
</manifest>
这篇关于如果用户不活动3天，如何发送通知的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
