在应用程序启动时打开 GPS

Question

我在 Android 开始使用 GoogleMap，我希望我的应用程序在应用程序启动时自动打开 GPS，并在应用程序关闭或用户退出应用程序时自动关闭。

如何完成以上任务？

Answer 1

您可以像这样提示用户打开 GPS：

private void buildAlertMessageNoGps() {
        final AlertDialog.Builder builder = new AlertDialog.Builder(
                this.getActivity());
        builder.setMessage(R.string.gps_disabled)
                .setCancelable(false)
                .setTitle(R.string.gps_disabled_title)
                .setPositiveButton(R.string.enable,
                        new DialogInterface.OnClickListener() {
                            public void onClick(
                                    @SuppressWarnings("unused") final DialogInterface dialog,
                                    @SuppressWarnings("unused") final int id) {
                                startActivity(new Intent(
                                        android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
                            }
                        })
                .setNegativeButton(R.string.cancel,
                        new DialogInterface.OnClickListener() {
                            public void onClick(final DialogInterface dialog,
                                    @SuppressWarnings("unused") final int id) {
                                dialog.cancel();

                            }
                        });
        final AlertDialog alert = builder.create();
        alert.show();
    }

Answer 2

GPS 不能真正由 Android 应用程序自动打开。它需要用户的身份验证才能这样做。

最好的办法是弹出一个对话框，请求用户允许访问定位服务。

Answer 3

不，这不是不可能，也不合适。没有他的权限，你不能只管理用户 phone。

来自 Play 商店：

"Cerberus automatically enables GPS if it is off when you try to localize your device (only on Android < 2.3.3) and you can protect it from unauthorized uninstalling - more info in the app configuration."

你可以这样做：

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

Answer 4

完整的解决方案在这里。

AndroidMAnifest.xml

可能您需要以下权限

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

MainActivity代码

public class MainActivity extends AppCompatActivity {

Context context;

  protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //... some code to init Activity and etc...

        context = this;

        LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE );
        boolean statusOfGPS = manager.isProviderEnabled(LocationManager.GPS_PROVIDER);

        if(!statusOfGPS) // Before show message to turn on GPS be sure it is turned off.
        {
            buildAlertMessageNoGps();
        }
    }



private void buildAlertMessageNoGps() {
        final AlertDialog.Builder builder = new AlertDialog.Builder(
                this.getActivity());
        builder.setMessage(R.string.gps_disabled)
                .setCancelable(false)
                .setTitle(R.string.gps_disabled_title)
                .setPositiveButton(R.string.enable,
                        new DialogInterface.OnClickListener() {
                            public void onClick(
                                    @SuppressWarnings("unused") final DialogInterface dialog,
                                    @SuppressWarnings("unused") final int id) {
                                startActivity(new Intent(
                                        android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
                            }
                        })
                .setNegativeButton(R.string.cancel,
                        new DialogInterface.OnClickListener() {
                            public void onClick(final DialogInterface dialog,
                                    @SuppressWarnings("unused") final int id) {
                                dialog.cancel();

                            }
                        });
        final AlertDialog alert = builder.create();
        alert.show();
    }

在应用程序启动时打开 GPS

Turning on GPS while the Application Launch

gps

android

google-maps