[英]Android onResume method called when activity is not visible
我想在我的應用程序中訪問gps服務。因此我使用了Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
在按鈕的onClick()
方法中。調用Intent后,我啟動服務以偵聽位置更新。在onResume方法中,我檢查gps服務。如果已禁用,則停止服務。但是onResume方法被調用當顯示“位置設置”並且服務最終在用戶可以打開gps之前停止時。
碼:
Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(i);
gps_intent=new Intent(AddOffers.this, StatsGpsService.class);
gps_intent.putExtra("offr_act_ind",true);
startService(gps_intent);
@Override
protected void onResume() {
super.onResume();
LocationManager locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
boolean isproviderenabled=locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if(isproviderenabled==false){
if(gps_intent!=null){
Log.e("g","g");
stopService(gps_intent);
}}
StatsGpsService.java:
public class StatsGpsService extends Service {
LocationListener locationListener;
LocationManager locationManager;
boolean flag1;
public StatsGpsService() {
super();
}
@Override
public void onCreate() {
super.onCreate();
Log.e("Service","Created");
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
handleLocation(intent);
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy();
Log.e("Service","Destroyed");
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
public void handleLocation(Intent intent){
if(intent!= null) {
flag1 = intent.getBooleanExtra("offr_act_ind", false);
locationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
if (flag1 == true) {
Intent intent = new Intent("loc_updts");
intent.putExtra("stat_lat", location.getLatitude());
intent.putExtra("stat_longt", location.getLongitude());
sendBroadcast(intent);
}
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String s) {
Log.e("Provider","Disabled");
}
};
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
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;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 10, locationListener);
}
}
}
不要在onResume上檢查GPS狀態。 使用startActivityForResult打開設置。
並檢查onActivityResult上的Gps狀態
要打開設置,請使用以下代碼
Intent SettingIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
SettingIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivityForResult(SettingIntent,Utils.SETTING_INTENT_REQUESTCODE// any int code you can use);
要處理結果,您需要重寫Activity的onActivityResult方法
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == Utils.SETTING_INTENT_REQUESTCODE// this should be same int that you passed to start acitivity) {
LocationManager locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
boolean isproviderenabled=locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if(isproviderenabled==false){
if(gps_intent!=null){
Log.e("g","g");
stopService(gps_intent);
}
}
}
}
希望它對你有用
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.