如何在 Jetpack Compose 中启用位置？

Question

我正在请求位置权限，即使在用户授予位置权限后，如果位置设置被禁用，我也无法获得 GPS 位置。我如何请求用户启用 Jetpack Compose 中的位置设置？

   val multiplePermissionsState = rememberMultiplePermissionsState(
        listOf(
            android.Manifest.permission.ACCESS_FINE_LOCATION,
            android.Manifest.permission.ACCESS_BACKGROUND_LOCATION,
            android.Manifest.permission.ACCESS_COARSE_LOCATION
        )
    )
 
 Button(onClick = {
                    multiplePermissionsState.launchMultiplePermissionRequest()
                },
                modifier = Modifier.background(MaterialTheme.colors.primary)
            )

Answer 1

创建启用位置权限对话框，如 google 地图。

import android.app.Activity.RESULT_OK
import android.content.Context
import android.content.IntentSender
import android.util.Log
import androidx.activity.compose.rememberLauncherForActivityResult
import androidx.activity.result.IntentSenderRequest
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.material.Button
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.platform.LocalContext
import com.google.android.gms.common.api.ResolvableApiException
import com.google.android.gms.location.*
import com.google.android.gms.tasks.Task

@Composable
fun Layout() {

    val context: Context = LocalContext.current
    
    val settingResultRequest = rememberLauncherForActivityResult(
        contract = ActivityResultContracts.StartIntentSenderForResult()
    ) { activityResult ->
        if (activityResult.resultCode == RESULT_OK)
            Log.d("appDebug", "Accepted")
        else {
            Log.d("appDebug", "Denied")
        }
    }

    Button(onClick = {
        checkLocationSetting(
            context = context,
            onDisabled = { intentSenderRequest ->
                settingResultRequest.launch(intentSenderRequest)
            },
            onEnabled = { /* This will call when setting is already enabled */ }
        )
    }) {
        Text(text = "Request permission")
    }

}


// call this function on button click
fun checkLocationSetting(
    context: Context,
    onDisabled: (IntentSenderRequest) -> Unit,
    onEnabled: () -> Unit
) {

    val locationRequest = LocationRequest.create().apply {
        interval = 1000
        fastestInterval = 1000
        priority = LocationRequest.PRIORITY_HIGH_ACCURACY
    }

    val client: SettingsClient = LocationServices.getSettingsClient(context)
    val builder: LocationSettingsRequest.Builder = LocationSettingsRequest
        .Builder()
        .addLocationRequest(locationRequest)
    
    val gpsSettingTask: Task<LocationSettingsResponse> =
        client.checkLocationSettings(builder.build())
    
    gpsSettingTask.addOnSuccessListener { onEnabled() }
    gpsSettingTask.addOnFailureListener { exception ->
        if (exception is ResolvableApiException) {
            try {
                val intentSenderRequest = IntentSenderRequest
                    .Builder(exception.resolution)
                    .build()
                onDisabled(intentSenderRequest)
            } catch (sendEx: IntentSender.SendIntentException) {
                // ignore here
            }
        }
    }
    
}

Answer 2

您可以使用 Google 的伴奏库： (https://google.github.io/accompanist/permissions/)

由于他们的网站包含示例代码，因此我不会在此处粘贴代码。

如何在 Jetpack Compose 中启用位置？

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settings

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location

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android-jetpack-compose