应用程序重定向到设置时调用哪个活动生命周期 [英] Which Activity Life cycle gets called when app redirect to settings
问题描述
在我的应用程序中,如果未启用gps,我将调用gps设置菜单。我在Oncreate()方法中调用了这个。但是,我也想检查用户是否真的启用它?
我的问题是当用户从设置菜单返回时调用哪个活动生命周期方法。
我试图为OnResume方法编写代码。但即使启用了GPS,alertdilogue仍会弹出。
if(gps.canGetLocation()){
latitude = gps.getLatitude();
longitude = gps.getLongitude();
altitude = gps.getAltitude();
gpsLocation =纬度:+纬度+,经度:+经度
+,海拔高度:+高度;
System.out.println(GPS @ Avaialable Form+ gpsLocation);
Logger.e(this,GPS Location,gpsLocation);
} else {
gps.showSettingsAlert();
}
我在OnCreate()和
protected void onResume(){
// TODO自动生成的方法存根
super.onResume();
System.out.println(On Resume gets Called);
if(gps.canGetLocation()){
latitude = gps.getLatitude();
longitude = gps.getLongitude();
altitude = gps.getAltitude();
gpsLocation =纬度:+纬度+,经度:+经度
+,海拔高度:+高度;
System.out.println(GPS @ Avaialable Form+ gpsLocation);
Logger.e(this,GPS Location,gpsLocation);
} else {
gps.showSettingsAlert(); ()方法中的
}
。
据我所知,唯一可靠的方法是通过侦听器(GpsStatus.Listener)设置并侦听gps更改 - 的LocationManager#addGpsStatusListener(...)。
在onGpsStatusChanged方法中,您可以对GpsStatus#GPS_EVENT_STARTED或GpsStatus#GPS_EVENT_STOPPED做出反应,并通过Handler更改UI的更新。希望这有助于: - )
In my application, I am calling gps setting menu if gps is not enabled. I called this in Oncreate() method. However, I also wants to check whether user actually enables it or not?
My Question is which activity life cycle method gets called when user get back from setting menu.
I tried to write code for OnResume method. But alertdilogue keeps poping even GPS is enabled.
if (gps.canGetLocation()) {
latitude = gps.getLatitude();
longitude = gps.getLongitude();
altitude = gps.getAltitude();
gpsLocation = "Latitude: " + latitude + ", Longitude:" + longitude
+ ",Altitude:" + altitude;
System.out.println("GPS @ Avaialable Form"+gpsLocation);
Logger.e(this, "GPS Location", gpsLocation);
} else {
gps.showSettingsAlert();
}
I called this code in OnCreate() and
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
System.out.println("On Resume gets Called");
if (gps.canGetLocation()) {
latitude = gps.getLatitude();
longitude = gps.getLongitude();
altitude = gps.getAltitude();
gpsLocation = "Latitude: " + latitude + ", Longitude:" + longitude
+ ",Altitude:" + altitude;
System.out.println("GPS @ Avaialable Form"+gpsLocation);
Logger.e(this, "GPS Location", gpsLocation);
} else {
gps.showSettingsAlert();
}
in OnResume() Method.
As far as I know the only reliable way is setup and listen to the gps changes via listener (GpsStatus.Listener) - LocationManager#addGpsStatusListener(...). In the onGpsStatusChanged method you can react to GpsStatus#GPS_EVENT_STARTED or GpsStatus#GPS_EVENT_STOPPED and change the update of your UI via Handler. Hope this helps :-)
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