如何在Android上打开GPS

Question

我正在开发一个需要激活GPS的Android应用程序.

我在很多论坛上阅读了很多主题,我发现答案是:

这是不可能的

但是......"Cerberus"APP打开我的GPS ......所以......这是可能的!

谁能帮我这个？

Answer 1

不,不可能也不合适.没有他的权限,你不能只管理用户电话.

来自Play商店:

"当你试图本地化你的设备时,Cerberus会自动启用GPS (仅限Android <2.3.3),你可以保护它免受未经授权的卸载 - 应用程序配置中的更多信息."

你可以这样做:

startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));

Answer 2

曾经有一个漏洞允许GPS被没有特殊权限的应用程序打开.从2.3(大多数ROM)开始,该漏洞不再存在.这是另一篇谈论它的帖子,

如何在Android上以编程方式启用或禁用GPS？

"启用GPS"是一种安全设置,因此您必须具有WRITE_SECURE_SETTINGS权限.这是受签名保护的权限,因此除非使用制造商的平台证书进行签名,否则不会授予您应用程序此权限.

正确的做法是将用户发送到位置设置页面,并让他们根据需要启用GPS.例如,

Intent i = new
Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(i);

Answer 3

我认为我们有更好的版本来启用位置,而不像谷歌地图工作那样打开设置.

它看起来像这样 -

在gradle中添加依赖关系 - 编译'com.google.android.gms:play-services-location:10.0.1'

public class MapActivity extends AppCompatActivity {

    protected static final String TAG = "LocationOnOff";


    private GoogleApiClient googleApiClient;
    final static int REQUEST_LOCATION = 199;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        this.setFinishOnTouchOutside(true);

        // Todo Location Already on  ... start
        final LocationManager manager = (LocationManager) MapActivity.this.getSystemService(Context.LOCATION_SERVICE);
        if (manager.isProviderEnabled(LocationManager.GPS_PROVIDER) && hasGPSDevice(MapActivity.this)) {
            Toast.makeText(MapActivity.this,"Gps already enabled",Toast.LENGTH_SHORT).show();
            finish();
        }
        // Todo Location Already on  ... end

        if(!hasGPSDevice(MapActivity.this)){
            Toast.makeText(MapActivity.this,"Gps not Supported",Toast.LENGTH_SHORT).show();
        }

        if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER) && hasGPSDevice(MapActivity.this)) {
            Log.e("TAG","Gps already enabled");
            Toast.makeText(MapActivity.this,"Gps not enabled",Toast.LENGTH_SHORT).show();
            enableLoc();
        }else{
            Log.e("TAG","Gps already enabled");
            Toast.makeText(MapActivity.this,"Gps already enabled",Toast.LENGTH_SHORT).show();
        }
    }


    private boolean hasGPSDevice(Context context) {
        final LocationManager mgr = (LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE);
        if (mgr == null)
            return false;
        final List<String> providers = mgr.getAllProviders();
        if (providers == null)
            return false;
        return providers.contains(LocationManager.GPS_PROVIDER);
    }

    private void enableLoc() {

        if (googleApiClient == null) {
            googleApiClient = new GoogleApiClient.Builder(MapActivity.this)
                    .addApi(LocationServices.API)
                    .addConnectionCallbacks(new GoogleApiClient.ConnectionCallbacks() {
                        @Override
                        public void onConnected(Bundle bundle) {

                        }

                        @Override
                        public void onConnectionSuspended(int i) {
                            googleApiClient.connect();
                        }
                    })
                    .addOnConnectionFailedListener(new GoogleApiClient.OnConnectionFailedListener() {
                        @Override
                        public void onConnectionFailed(ConnectionResult connectionResult) {

                            Log.d("Location error","Location error " + connectionResult.getErrorCode());
                        }
                    }).build();
            googleApiClient.connect();
         }

         LocationRequest locationRequest = LocationRequest.create();
            locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
         locationRequest.setInterval(30 * 1000);
         locationRequest.setFastestInterval(5 * 1000);
         LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                    .addLocationRequest(locationRequest);

         builder.setAlwaysShow(true);

         PendingResult<LocationSettingsResult> result =
                    LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
         result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
            @Override
            public void onResult(LocationSettingsResult result) {
                final Status status = result.getStatus();
                switch (status.getStatusCode()) {
                  case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                       try {
                           // Show the dialog by calling startResolutionForResult(),
                           // and check the result in onActivityResult().
                                status.startResolutionForResult(MapActivity.this, REQUEST_LOCATION);

                           finish();
                       } catch (IntentSender.SendIntentException e) {
                           // Ignore the error.
                       }
                       break;
                 }
             }
         });
     }

}

Answer 4

    if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage(R.string.gps_disabled_message)
        .setCancelable(false)
        .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                    Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    startActivity(intent);                  
            }
        })
        .setNegativeButton("No", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                dialog.cancel();
            }
        });
        AlertDialog alert = builder.create();
        alert.show();
    }

这会创建一个警报,并允许用户转到设置屏幕并点击后退按钮直接回到您的应用程序.根据我的知识,电源小部件利用不会超过2.3.