小编kci*_*eae的帖子

我想实现一个对话框,要求用户决定是否要打开位置wifi和gps,但onActivityResult它总是返回0,即使按下确定按钮,更多细节:当wifi和gps关闭时,返回0,但两者都是正确激活(按下确定按钮).当gps打开并关闭wifi时,返回0,但w​​ifi正确激活(按下确定按钮).只有当wifi打开时,gps才会关闭,返回-1,但gps正确激活(按下确定按钮).

我的代码:

public void activategps(){
        builder = new LocationSettingsRequest.Builder().addLocationRequest(locationRequest);
        builder.setAlwaysShow(true);


        //builder.setNeedBle(true);
        PendingResult<LocationSettingsResult> result =
                LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());

        result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
            @Override
            public void onResult(LocationSettingsResult result) {
                final Status status = result.getStatus();
                final LocationSettingsStates state = result.getLocationSettingsStates();
                switch (status.getStatusCode()) {
                    case LocationSettingsStatusCodes.SUCCESS:
                        // All location settings are satisfied. The client can initialize location
                        // requests here.
                        //...
                        Log.i("sms", "estan disponibles");
                        Toast.makeText(MainActivity.this, "HOLA 1", Toast.LENGTH_SHORT).show();
                        break;
                    case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                        // Location settings are not satisfied. But could be fixed by showing the user
                        // …

我已经很久没有使用过Android了,但是现在我找到了一个新术语Kotlin,所以我怀疑是,Kotlin需要JDK吗？

如果Kotlin将替换为Java,那么JDK就没有必要了,因为据我所知JDK是针对Java开发的,是否正确？

如果它是正确的那么我有其他怀疑(这已经是旧的)为什么JDK用于Android如果已经包含Android SDK？

PD我疯了,我需要一个解释.