我面临的问题是通过我正在编写的服务向应用程序提供gps权限。 我试着找到一个例子来实现这一点,并且示例显示在Activity中编写gpslocation finder,但在这种情况下,我想在服务中实现它。
服务代码如下:
public class TravelService extends Service{
private LocationManager locManager;
private LocationListener locListener;
@Override
public void onCreate() {
super.onCreate();
locManager = (LocationManager) getSystemService(LOCATION_SERVICE);
locListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
locManager.requestLocationUpdates("gps", 5000, 100, locListener);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
};
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
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;
}
locManager.requestLocationUpdates("gps", 5000, 100, locListener);
Toast.makeText(this, "Service Created", Toast.LENGTH_LONG).show();
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
locManager.requestLocationUpdates("gps", 5000, 100, locListener);
Toast.makeText(this,"Service Started",Toast.LENGTH_LONG).show();
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy();
Toast.makeText(this,"Service destroyed",Toast.LENGTH_LONG).show();
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
这是我在Manifest.xml中的代码:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.param.dateandtime">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Entry for LoginActivity.class -->
<activity android:name=".LoginActivity"
android:label="@string/app_name"></activity>
<activity android:name=".Finish"
android:label="@string/app_name"></activity>
<service android:name=".TravelService"
android:exported="false"/>
</application>
</manifest>
这里我附上了错误日志,显示了我所面临的错误。我可以看到错误,因为“位置提供程序需要ACCESS_FINE_LOCATION权限”。 Error log:
答案 0 :(得分:0)
您无法从服务请求权限,因为服务未绑定到UI。
所以,当你startService()
时,从活动中做到这一点。
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, 1001); //Any number can be used
实施onRequestPermissionsResult()
回调
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case 1001: {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED
&& (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
|| ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED)) {
//Start your service here
}
}
}
}