Android 在每天的特定时间调用方法
嗨,我有一个全屏应用程序; 弗斯特 我想,例如,下午6点隐藏所有对象,然后在特定时间再次显示它们,每天。基于设备时间Android 在每天的特定时间调用方法,android,timer,task,schedule,Android,Timer,Task,Schedule,嗨,我有一个全屏应用程序; 弗斯特 我想,例如,下午6点隐藏所有对象,然后在特定时间再次显示它们,每天。基于设备时间 第二,我想每15分钟发送一次状态和GPS信息,我有一个方法,但如何每15分钟调用一次呢?要安排一个定期任务,可以使用带有计时器任务的计时器 看 对于你的第二个问题,从现在开始每15分钟做一件事: long INTERVAL_MSEC = 900000; Timer timer = new Timer(); TimerTask task = new TimerTask() {
第二,我想每15分钟发送一次状态和GPS信息,我有一个方法,但如何每15分钟调用一次呢?要安排一个定期任务,可以使用带有计时器任务的计时器 看 对于你的第二个问题,从现在开始每15分钟做一件事:
long INTERVAL_MSEC = 900000;
Timer timer = new Timer();
TimerTask task = new TimerTask() {
public void run() {
sendStatusAndGPS();
}
}
timer.scheduleAtFixedRate(task, 0, INTERVAL_MSEC);
对于第一个问题,您可以将开始时间作为第二个参数传递给timer.scheduleAtFixedRate
您还可以将处理程序与PostAttribute方法一起使用。要计划周期性任务,您可以将计时器与TimerTask一起使用 看 对于你的第二个问题,从现在开始每15分钟做一件事:
long INTERVAL_MSEC = 900000;
Timer timer = new Timer();
TimerTask task = new TimerTask() {
public void run() {
sendStatusAndGPS();
}
}
timer.scheduleAtFixedRate(task, 0, INTERVAL_MSEC);
对于第一个问题,您可以将开始时间作为第二个参数传递给timer.scheduleAtFixedRate
您还可以将处理程序与PostAttribute方法一起使用。正如nitegazer2003所说,您可以使用: 公共作废计划(TimerTask任务、日期、时间、长周期) 但是,如果您想为一天中的特定小时启动重复计时器,则必须设置when变量, 例如,如果您希望计时器每天在6点重复,您可以执行以下操作:
// get today date
Date curent_time= new Date(System.currentTimeMillis());
Calendar cal = Calendar.getInstance();
cal.setTime(curent_time);
int hour = cal.get(Calendar.HOUR);
int min = cal.get(Calendar.MINUTE);
int sec = cal.get(Calendar.SECOND);
long when = (6 * 3600)
- ( (hour*3600) + (min *60) + sec);
// interval should be based on miliseconds so
long interval = 24*60*60*1000;
timer.scheduleAtFixedRate(new testtimertask(), when, interval);
<> P>但你需要考虑CurtNeTimeTimes不是你的启动时间,如果是的话,你应该使用另一个公式来计算何时启动计时器。p> 正如nitegazer2003所说,您可以使用: 公共作废计划(TimerTask任务、日期、时间、长周期) 但是,如果您想为一天中的特定小时启动重复计时器,则必须设置when变量, 例如,如果您希望计时器每天在6点重复,您可以执行以下操作:
// get today date
Date curent_time= new Date(System.currentTimeMillis());
Calendar cal = Calendar.getInstance();
cal.setTime(curent_time);
int hour = cal.get(Calendar.HOUR);
int min = cal.get(Calendar.MINUTE);
int sec = cal.get(Calendar.SECOND);
long when = (6 * 3600)
- ( (hour*3600) + (min *60) + sec);
// interval should be based on miliseconds so
long interval = 24*60*60*1000;
timer.scheduleAtFixedRate(new testtimertask(), when, interval);
<> P>但你需要考虑CurtNeTimeTimes不是你的启动时间,如果是的话,你应该使用另一个公式来计算何时启动计时器。p> 因此,您需要一个唤醒应用程序的调度选项,因此您应该使用
AlarmManager
来执行此操作,您应该看看
其想法是,您创建一个每30分钟呼叫一次的服务,并在该服务中写入您的GPS位置代码
这是我在LocationService.Class中的代码
public class LocationService extends Service
{
private class LocationListener implements android.location.LocationListener
{
Location mLastLocation;
public LocationListener(String provider)
{
Log.e(TAG, "LocationListener " + provider);
mLastLocation = new Location(provider);
}
@Override
public void onLocationChanged(Location currentLocation)
{
sendAllLocationsToServer();
}
@Override
public void onProviderDisabled(String provider)
{
Log.e(TAG, "onProviderDisabled: " + provider);
}
@Override
public void onProviderEnabled(String provider)
{
Log.e(TAG, "onProviderEnabled: " + provider);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
Log.e(TAG, "onStatusChanged: " + provider);
}
}
private void sendAllLocationsToServer() {
//send locations to server
}
LocationListener[] mLocationListeners = new LocationListener[] {
new LocationListener(LocationManager.GPS_PROVIDER),
new LocationListener(LocationManager.NETWORK_PROVIDER)
};
@Override
public IBinder onBind(Intent arg0)
{
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Log.e(TAG, "onStartCommand");
super.onStartCommand(intent, flags, startId);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return START_STICKY;
}
if (mLocationManager == null) {
initializeLocationManager();
try {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[1]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "network provider does not exist, " + ex.getMessage());
}
try {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[0]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "gps provider does not exist " + ex.getMessage());
}
} else {
/*try {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[1]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "network provider does not exist, " + ex.getMessage());
}*/
try {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[0]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "gps provider does not exist " + ex.getMessage());
}
try {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[1]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "network provider does not exist, " + ex.getMessage());
}
}
return START_STICKY;
}
public void cancelService(){
AlarmManager alarmMgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent alarmIntent = new Intent(getApplicationContext(), LocationService.class);
alarmIntent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
PendingIntent pendingIntent = PendingIntent.getService(getApplicationContext(), 0,
alarmIntent, 0);
alarmMgr.cancel(pendingIntent);
}
@Override
public void onCreate()
{
Log.e(TAG, "onCreate");
//TODO should implement an stop point for this service
initializeLocationManager();
try {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[1]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "network provider does not exist, " + ex.getMessage());
}
try {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[0]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "gps provider does not exist " + ex.getMessage());
}
}
@Override
public void onDestroy()
{
Log.e(TAG, "onDestroy");
super.onDestroy();
if (mLocationManager != null) {
for (int i = 0; i < mLocationListeners.length; i++) {
try {
mLocationManager.removeUpdates(mLocationListeners[i]);
} catch (Exception ex) {
Log.i(TAG, "fail to remove location listners, ignore", ex);
}
}
}
stopSelf();
}
private void initializeLocationManager() {
Log.e(TAG, "initializeLocationManager");
if (mLocationManager == null) {
mLocationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
}
}
}
公共类定位服务扩展服务
{
私有类LocationListener实现android.location.LocationListener
{
位置mLastLocation;
公共位置侦听器(字符串提供程序)
{
Log.e(标记“LocationListener”+提供者);
mLastLocation=新位置(提供商);
}
@凌驾
已更改位置上的公共无效(位置currentLocation)
{
sendAllLocationsToServer();
}
@凌驾
公共无效onProviderDisabled(字符串提供程序)
{
Log.e(标记“onProviderDisabled:+提供程序”);
}
@凌驾
公共无效onProviderEnabled(字符串提供程序)
{
Log.e(标记“onProviderEnabled:+提供程序”);
}
@凌驾
public void onStatusChanged(字符串提供程序、int状态、Bundle extra)
{
Log.e(标记“onStatusChanged:+提供者”);
}
}
私有void sendAllLocationsToServer(){
//将位置发送到服务器
}
LocationListener[]mlLocationListeners=新LocationListener[]{
新LocationListener(LocationManager.GPS_提供程序),
新LocationListener(LocationManager.NETWORK\u提供程序)
};
@凌驾
公共IBinder onBind(意图arg0)
{
返回null;
}
@凌驾
公共int onStartCommand(Intent Intent、int标志、int startId)
{
Log.e(标记“onStartCommand”);
super.onStartCommand(intent、flags、startId);
if(ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS\u FINE\u LOCATION)!=PackageManager.permission\u已授予和&ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS\u LOCATION)!=PackageManager.permission\u已授予){
考虑到呼叫
//ActivityCompat#请求权限
//在此处请求缺少的权限,然后覆盖
//public void onRequestPermissionsResult(int-requestCode,字符串[]权限,
//int[]格兰特结果)
//处理用户授予权限的情况。请参阅文档
//对于ActivityCompat,请请求权限以获取更多详细信息。
返回开始时间;
}
if(mLocationManager==null){
初始化ElocationManager();
试一试{
mLocationManager.RequestLocationUpdate(
LocationManager.NETWORK_提供程序、位置间隔、位置距离、,
mLocationListeners[1]);
}catch(java.lang.SecurityException ex){
Log.i(标记“无法请求位置更新,忽略”,例如);
}捕获(IllegalArgumentException ex){
Log.d(标记“网络提供商不存在”+ex.getMessage());
}
试一试{
mLocationManager.RequestLocationUpdate(
LocationManager.GPS\u提供程序、位置\u间隔、位置\u距离、,
mLocationListeners[0]);
}catch(java.lang.SecurityException ex){
Log.i(标记“无法请求位置更新,忽略”,例如);
}捕获(IllegalArgumentException ex){
Log.d(标记“gps提供程序不存在”+ex.getMessage());
}
}否则{
/*试一试{
mLocationManager.RequestLocationUpdate(
LocationManager.NETWORK_提供程序、位置间隔、位置距离、,
mLocationListeners[1]);
}catch(java.lang.SecurityExe)