如何在启动应用程序时要求用户启用GPS?
private void turnGPSOn(){
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if(!provider.contains("gps")){ //if gps is disabled
final Intent poke = new Intent();
poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
poke.addCategory(Intent.CATEGORY_ALTERNATIVE);
poke.setData(Uri.parse("3"));
sendBroadcast(poke);
}
}
请参阅Logcat
04/20 17:35:26: Launching app
$ adb push F:\AndroidProject\Picker\app\build\outputs\apk\app-debug.apk /data/local/tmp/picker.novasyslabs.com.picker
$ adb shell pm install -r "/data/local/tmp/picker.novasyslabs.com.picker"
pkg: /data/local/tmp/picker.novasyslabs.com.picker
Success
$ adb shell am start -n "picker.novasyslabs.com.picker/picker.novasyslabs.com.picker.SlashScreen" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 22502 on device sony-d2302-ZH80065A89
W/ResourceType: Found multiple library tables, ignoring...
W/ResourceType: Found multiple library tables, ignoring...
W/ResourceType: Found multiple library tables, ignoring...
W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
I/art: Background partial concurrent mark sweep GC freed 151(19KB) AllocSpace objects, 0(0B) LOS objects, 39% free, 13MB/22MB, paused 5.156ms total 20.919ms
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: picker.novasyslabs.com.picker, PID: 22502
java.lang.RuntimeException: Unable to start activity ComponentInfo{picker.novasyslabs.com.picker/picker.novasyslabs.com.picker.SlashScreen}: java.lang.ClassCastException: picker.novasyslabs.com.picker.SlashScreen cannot be cast to com.google.android.gms.common.api.GoogleApiClient$ConnectionCallbacks
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2442)
at android.app.ActivityThread.access$800(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1351)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:211)
at android.app.ActivityThread.main(ActivityThread.java:5371)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:945)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:740)
Caused by: java.lang.ClassCastException: picker.novasyslabs.com.picker.SlashScreen cannot be cast to com.google.android.gms.common.api.GoogleApiClient$ConnectionCallbacks
at picker.novasyslabs.com.picker.SlashScreen.onCreate(SlashScreen.java:65)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2332)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2442)
at android.app.ActivityThread.access$800(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1351)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:211)
at android.app.ActivityThread.main(ActivityThread.java:5371)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:945)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:740)
Application terminated.
我尝试了许多其他选项，例如程序包管理器，位置管理器等，但无法执行我想要的操作. 我希望启动应用程序时提示用户启用GPS. 我不希望用户进入设置.
I tried many other option like package manager, location manager, etc but not able to do what I want. I want that at the launch application user will be prompted to enable the GPS. I don't want user to go inside the settings.
我想要的是API级别> = 19.
And that I wanted for the API level >=19.
请帮助我解决我的问题...... 谢谢
Please help me to solve my problem......... Thanks
如果您想要下图所示的内容，请遵循.
If you want something as shown in below image, follow along.
-
在您的应用程序
build.gradle
implementation 'com.google.android.gms:play-services-location:16.0.0'
创建所需的位置请求类型，我们希望GPS精度高
Create the type of location request you want, we want high accuracy for GPS
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
现在，我们需要检查GPS的当前状态.为此，我们必须使用LocationServices.getSettingsClient(getActivity()).checkLocationSettings(builder.build()).这将返回需要异步处理的Task.在RESOLUTION_REQUIRED情况下，我们要求用户授予权限，这是在此处显示用户提示以启用GPS.
Now we need to check current state of GPS. For this, we have to use LocationServices.getSettingsClient(getActivity()).checkLocationSettings(builder.build()) This will return a Task which needs to handled asynchronously. In RESOLUTION_REQUIRED case, we ask user to give permissions, this is where we show the user prompt to enable GPS.
Task<LocationSettingsResponse> result =
LocationServices.getSettingsClient(getActivity()).checkLocationSettings(builder.build());
result.addOnCompleteListener(new OnCompleteListener<LocationSettingsResponse>() {
@Override
public void onComplete(@NonNull Task<LocationSettingsResponse> task) {
try {
LocationSettingsResponse response = task.getResult(ApiException.class);
// All location settings are satisfied. The client can initialize location
// requests here.
} catch (ApiException exception) {
switch (exception.getStatusCode()) {
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be fixed by showing the
// user a dialog.
try {
// Cast to a resolvable exception.
ResolvableApiException resolvable = (ResolvableApiException) exception;
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
resolvable.startResolutionForResult(
getActivity(),
LocationRequest.PRIORITY_HIGH_ACCURACY);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
} catch (ClassCastException e) {
// Ignore, should be an impossible error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have no way to fix the
// settings so we won't show the dialog.
break;
}
}
}
});
现在我们已经要求用户打开GPS，我们需要检查用户是否允许或忽略了它.为此，请重写onActivityResult.请注意，如果您是在片段中实现上述代码，则结果将在随附的Activity中收到.因此，请在Activity类中重写onActivityResult.
Now that we have asked user to turn on GPS, we need to check whether user allowed it or ignored it. For this, override onActivityResult. Please note that, if you're implementing above code in a fragment, result will be received in the enclosing Activity. So override onActivityResult in the Activity class.
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case LocationRequest.PRIORITY_HIGH_ACCURACY:
switch (resultCode) {
case Activity.RESULT_OK:
// All required changes were successfully made
Log.i(TAG, "onActivityResult: GPS Enabled by user");
break;
case Activity.RESULT_CANCELED:
// The user was asked to change settings, but chose not to
Log.i(TAG, "onActivityResult: User rejected GPS request");
break;
default:
break;
}
break;
}
}