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私は、緯度と経度を使用して2つの場所の間の期間だけをユーザーに表示しようとしています。私はどのようにそれを処理するか分からないアクセス許可に問題があります。ここでGoogleマップを使用して期間を表示するにはどうすればよいですか？
は私のdoInBackgroundコードです：ここで
protected String[] doInBackground(String... params) {
try {
LocationManager locationManager = (LocationManager) MyCustomHomeActivity.this
.getSystemService(LOCATION_SERVICE);
// getting GPS status
boolean isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
boolean isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled) {
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
String shuLat = "41.2207188";
String shuLong = "-73.24168179999999";
String forecastJsonStr = null;
String myUrlSetup = "https://maps.googleapis.com/maps/api/directions/json?origin="+latitude + "," + longitude +"&destination="+shuLat +"," + shuLong + "&departure_time=now&traffic_model=best_guess&key=AIzaSyB6l8vrnspw2-1Q_cnzO03JlAsIOMl-7bs";
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
try {
URL url;
url = new URL(myUrlSetup);
// Create the request to GoogleMapAPI, and open the connection
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
// Read the input stream into a String
InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
return null;
}
System.out.println("I am in doInBackground step3");
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
// Since it's JSON, adding a newline isn't necessary (it won't affect parsing)
// But it does make debugging a *lot* easier if you print out the completed
// buffer for debugging.
buffer.append(line + "\n");
}
if (buffer.length() == 0) {
// Stream was empty. No point in parsing.
return null;
}
forecastJsonStr = buffer.toString();
Log.v(LOG_TAG, "Forecast string: " + forecastJsonStr);
} catch (IOException e) {
Log.e(LOG_TAG, "Error ", e);
// If the code didn't successfully get the weather data, there's no point in attemping
// to parse it.
return null;
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e(LOG_TAG, "Error closing stream", e);
}
}
}
try {
System.out.println("I am just in front of calling getDurationDataFromJson");
return getDurationDataFromJson(forecastJsonStr);
} catch (JSONException e) {
Log.e(LOG_TAG, e.getMessage(), e);
e.printStackTrace();
}
return new String[0];
}//end doInBackground
は私getDurationDataFromJSONコードです：
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
エラー：私は直面しています
private String[] getDurationDataFromJson(String forecastJsonStr)
throws JSONException {
// These are the names of the JSON objects that need to be extracted.
final String OWM_ROUTES = "routes";
final String OWM_LEGS = "legs";
final String OWM_DURATION = "duration";
final String OWM_TEXT = "text";
String[] resultStrs = new String[0];
String duration;
JSONObject durationJson = new JSONObject(forecastJsonStr);
JSONArray routeArray = durationJson.getJSONArray(OWM_ROUTES);
JSONArray legArray = routeArray.getJSONObject(0).getJSONArray(OWM_LEGS);
//Duration
JSONObject durationObj = legArray.getJSONObject(0).getJSONObject(OWM_DURATION);
duration = durationObj.getString(OWM_TEXT);
resultStrs[0] = duration;
System.out.println("Duration is: " + duration);
for (String s : resultStrs) {
System.out.println("Duration entry: " + s);
Log.v(LOG_TAG, "Duration entry: " + s);
}
return resultStrs;
}
トラブルはdoInBackGroundコードに次の一部です：
Call requires permission which may be rejected by user: code should explicitly check to see if permission is available(with `check permission`) or explicitly handle a potential `SecurityException`.
私が正しい方向に向いているかどうかはわかりません。これで私を導いてください。許可が実行時間で要求されているAndroidのAPIレベル（23）と
マニフェストから権限を表示できますか？どのOSバージョンをお試しになりますか？あなたはAPI23以来の新しいpermision apiに精通していますか？ – snachmsm
[https：///developer.android.com/training/permissions/requesting.html](https://developer.android.com/training/permissions/requesting.html） – snachmsm