在特定日期显示Android状态栏通知,
作者：互联网
帮我解决这个问题.
我在本地数据库中有一些日期,
每天我想在特定时间检查数据库日期和当前日期,如果数据库日期与当前日期匹配在状态栏中显示通知
我添加了我的代码,
signin – > MyNotificationService – > Scheduleclient – > ScheduleServcie – > AlarmTask – > NotifyService Flow,
这里一旦服务启动,数据库数据正在检索但条件不是每天检查.
我想查看本地数据库保存的日期和时间当前日期,如果两者都相同启动通知.
This link i Have used for Reference
Sign_in.Java
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
public class sign_in extends Activity implements OnClickListener {
TextView Signin, ForgotPasword;
private EditText EMAIL, PASSWORD;
private Button login;
// for Shared preferences
public static String email = "";
public static String password = "";
public static String storedPassword = "";
// This is a handle so that we can call methods on our service
private ScheduleClient scheduleClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.sign_in);
// Session Manager
session = new SessionManagerFor_Signin(getApplicationContext());
DB = new DataBaseConnector_forsignUp(this);
DB = DB.open();
Signin = (TextView) findViewById(R.id.textView1);
login = (Button) findViewById(R.id.button1);
ForgotPasword = (TextView) findViewById(R.id.textView4);
EMAIL = (EditText) findViewById(R.id.editText1);
PASSWORD = (EditText) findViewById(R.id.editText2);
login.setOnClickListener(this);
//new Service bind for Notification
// Create a new service client and bind our activity to this service
scheduleClient = new ScheduleClient(this);
scheduleClient.doBindService();
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
email = EMAIL.getText().toString();
password = PASSWORD.getText().toString();
session.createLoginSession(email, password);
if (email.equals("") || password.equals("")) {
// user didn't entered user name or password
// Show alert asking him to enter the details
alert.showAlertDialog(sign_in.this, "Login failed...","Please Enter Email and Password", false);
} else {
// fetch the Password form database for respective Email
storedPassword = DB.getSinlgeEntry(email);
if (password.equals(storedPassword)) {
Toast.makeText(sign_in.this, "Login Successfull",Toast.LENGTH_LONG).show();
Intent intent = new Intent(sign_in.this, Page1.class);
startActivity(intent);
finish();
//Calling the Notication for Notification Process
Intent myIntent1 = new Intent(sign_in.this,MyNotificationService.class);
pendingintent2 = PendingIntent.getService(sign_in.this, 0,myIntent1, 0);
AlarmManager alarmManager1 = (AlarmManager) getSystemService(ALARM_SERVICE);
Calendar calendar1 = Calendar.getInstance();
calendar1.setTimeInMillis(System.currentTimeMillis());
calendar1.add(Calendar.SECOND, 40);
alarmManager1.set(AlarmManager.RTC_WAKEUP,calendar1.getTimeInMillis(), pendingintent2);
long time24h = 24*60*60*1000;
alarmManager1.setRepeating(AlarmManager.RTC_WAKEUP,calendar1.getTimeInMillis(), time24h,pendingintent2);
// get Internet status
isInternetPresent = cd1.isConnectingToInternet();
}
}
}
@Override
protected void onDestroy() {
super.onDestroy();
// Close The Database
DB.close();
}
//Stop the Notification
@Override
protected void onStop() {
// When our activity is stopped ensure we also stop the connection to the service
// this stops us leaking our activity into the system *bad*
if(scheduleClient != null)
scheduleClient.doUnbindService();
super.onStop();
}
}
MyNotificationService .Java
package com.example;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import com.example.database.DatabaseConnector_forProduct;
import com.example.service.ScheduleClient;
import com.example.web.ProductPojo;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
public class MyNotificationService extends Service
{
// This is a handle so that we can call methods on our service
private ScheduleClient scheduleClient;
DatabaseConnector_forProduct helper=new DatabaseConnector_forProduct(this);
public String ExpiryDate;
private String TAG1 = "Notify..!!";
@Override
public void onCreate()
{
Log.i(TAG1, "Notification Created");
//new Service bind for Notification
// Create a new service client and bind our activity to this service
scheduleClient = new ScheduleClient(this);
scheduleClient.doBindService();
}
@Override
public IBinder onBind(Intent intent)
{
//Toast.makeText(this, "MyAlarmService.onBind()", Toast.LENGTH_LONG).show();
return null;
}
@Override
public void onDestroy()
{
super.onDestroy();
}
@SuppressWarnings("deprecation")
@Override
public void onStart(Intent intent, int startId)
{
super.onStart(intent, startId);
try
{
List<ProductPojo> val1 = helper.getAllvalues();
// "Reading all data..from Db ", Toast.LENGTH_LONG).show();
for (int i=0;i<val1.size();i++)
{
ExpiryDate = val1.get(i).getExpiry_Date();
//for Showing List view Data
String dt = ExpiryDate;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar cd = Calendar.getInstance();
try
{
cd.setTime(sdf.parse(dt));
}
catch (ParseException e)
{
e.printStackTrace();
}
SimpleDateFormat sdfr = new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance();
Date Warranty_Expired_Date = sdfr.parse(sdfr.format(cd.getTime()));
String dateExpiry=Warranty_Expired_Date.toString();
Date Current_Date = sdfr.parse(sdfr.format(cal.getTime()));
Log.i(TAG1,dateExpiry+"=="+Current_Date);
if(Warranty_Expired_Date.equals(Current_Date))
{
Calendar cd1 = Calendar.getInstance();
/*int DaySpecific = cd1.get(Calendar.DAY_OF_MONTH);
int month_Specfic = cd1.get(Calendar.MONTH);
int year_Specific = cd1.get(Calendar.YEAR);
cd1.set(year_Specific, month_Specfic, DaySpecific);
cd1.set(Calendar.HOUR_OF_DAY, 5);//24 Hour Format
cd1.set(Calendar.MINUTE, 30);
cd1.set(Calendar.SECOND, 0);*/
// Ask our service to set an alarm for that date, this activity talks to the client that talks to the service
scheduleClient.setAlarmForNotification(cd1);
}
else
{
}
}
}
catch (Exception e)
{
e.printStackTrace();
Log.i(TAG1,"Exception Caught");
}
}
@Override
public boolean onUnbind(Intent intent)
{
return super.onUnbind(intent);
}
}
AlarmTask.Java
package com.example.service.task;
import java.util.Calendar;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import com.example.service.NotifyService;
public class AlarmTask implements Runnable{
// The date selected for the alarm
private final Calendar date;
// The android system alarm manager
private final AlarmManager am;
// Your context to retrieve the alarm manager from
private final Context context;
public AlarmTask(Context context, Calendar date) {
this.context = context;
this.am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
this.date = date;
}
@Override
public void run() {
// Request to start are service when the alarm date is upon us
// We don't start an activity as we just want to pop up a notification into the system bar not a full activity
Intent intent = new Intent(context, NotifyService.class);
intent.putExtra(NotifyService.INTENT_NOTIFY, true);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
// Sets an alarm - note this alarm will be lost if the phone is turned off and on again
am.set(AlarmManager.RTC_WAKEUP, date.getTimeInMillis(), pendingIntent);
/*// setRepeating() lets you specify a precise custom interval--in this case,
// 20 minutes.
alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
1000 * 60 * 20, alarmIntent);*/
}
}
NotifyService.Java
package com.example.service;
import com.example.Page1;
import android.R;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
public class NotifyService extends Service {
/**
* Class for clients to access
*/
public class ServiceBinder extends Binder {
NotifyService getService() {
return NotifyService.this;
}
}
// Unique id to identify the notification.
private static final int NOTIFICATION = 123;
// Name of an intent extra we can use to identify if this service was started to create a notification
public static final String INTENT_NOTIFY = "com.blundell.tut.service.INTENT_NOTIFY";
// The system notification manager
private NotificationManager mNM;
@Override
public void onCreate() {
Log.i("NotifyService", "onCreate()");
mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("LocalService", "Received start id " + startId + ": " + intent);
// If this service was started by out AlarmTask intent then we want to show our notification
if(intent.getBooleanExtra(INTENT_NOTIFY, false))
showNotification();
// We don't care if this service is stopped as we have already delivered our notification
return START_NOT_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
// This is the object that receives interactions from clients
private final IBinder mBinder = new ServiceBinder();
/**
* Creates a notification and shows it in the OS drag-down status bar
*/
@SuppressWarnings("deprecation")
private void showNotification() {
// This is the 'title' of the notification
CharSequence title = " Alert...!";
// This is the icon to use on the notification
int icon = R.drawable.ic_dialog_alert;
// This is the scrolling text of the notification
CharSequence text = "Alert Today..!";
// What time to show on the notification
long time = System.currentTimeMillis();
Notification notification = new Notification(icon, text, time);
// The PendingIntent to launch our activity if the user selects this notification
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, Page1.class), 0);
// Set the info for the views that show in the notification panel.
notification.setLatestEventInfo(this, title, text, contentIntent);
// Clear the notification when it is pressed
notification.flags |= Notification.FLAG_AUTO_CANCEL;
// Send the notification to the system.
mNM.notify(NOTIFICATION, notification);
// Stop the service when we are finished
stopSelf();
}
}
ScheduleClient.java
package com.example.service;
import java.util.Calendar;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
public class ScheduleClient {
// The hook into our service
private ScheduleService mBoundService;
// The context to start the service in
private Context mContext;
// A flag if we are connected to the service or not
private boolean mIsBound;
public ScheduleClient(Context context) {
mContext = context;
}
/**
* Call this to connect your activity to your service
*/
public void doBindService() {
// Establish a connection with our service
mContext.bindService(new Intent(mContext, ScheduleService.class), mConnection, Context.BIND_AUTO_CREATE);
mIsBound = true;
}
private ServiceConnection mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
// This is called when the connection with our service has been established,
// giving us the service object we can use to interact with our service.
mBoundService = ((ScheduleService.ServiceBinder) service).getService();
}
public void onServiceDisconnected(ComponentName className) {
mBoundService = null;
}
};
/**
* Tell our service to set an alarm for the given date
* @param c a date to set the notification for
*/
public void setAlarmForNotification(Calendar c){
mBoundService.setAlarm(c);
}
/**
* When you have finished with the service call this method to stop it
* releasing your connection and resources
*/
public void doUnbindService() {
if (mIsBound) {
// Detach our existing connection.
mContext.unbindService(mConnection);
mIsBound = false;
}
}
}
ScheduleService.java
package com.example.service;
import java.util.Calendar;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import com.example.service.task.AlarmTask;
public class ScheduleService extends Service {
/**
* Class for clients to access
*/
public class ServiceBinder extends Binder {
ScheduleService getService() {
return ScheduleService.this;
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("ScheduleService", "Received start id " + startId + ": " + intent);
// We want this service to continue running until it is explicitly stopped, so return sticky.
return START_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
// This is the object that receives interactions from clients. See
private final IBinder mBinder = new ServiceBinder();
/**
* Show an alarm for a certain date when the alarm is called it will pop up a notification
*/
public void setAlarm(Calendar c) {
// This starts a new thread to set the alarm
// You want to push off your tasks onto a new thread to free up the UI to carry on responding
new AlarmTask(this, c).run();
}
}
解决方法:
您可以使用alarm执行此操作.它可以设置为每天运行一次,您可以在其中检查数据库中的数据并根据需要显示通知.
// Set the alarm to start at approximately 2:00 p.m.
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 14);
alarmMgr.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
AlarmManager.INTERVAL_DAY, alarmIntent);
标签：android-statusbar,android,android-notifications 来源： https://codeday.me/bug/20190929/1831264.html