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Google지도 뷰를 사용하는 앱이 있습니다. 이 코드는 내 옛날 장치 안드로이드 2.1에서 잘 작동하지만 내 htc 1 x 실행중인 안드로이드 4 나는 메인 스레드 예외에서 네트워크 피하기 위해 비동기했다.안드로이드 앱에지도가 표시되지 않습니다.
지도보기에 약 1 초가 지나면 충돌이 발생합니다. 오류에 Looper.prepare()를 호출하지 않는 스레드를 나타내는 예외가 있습니다. 어떤 아이디어를 어떻게 해결할 수 있는지 감사합니다.
다음은 예외이며 아래에 소스를 게시합니다.
11-14 13:29:31.025: W/dalvikvm(20404): threadid=15: thread exiting with uncaught exception (group=0x40a7d228)
11-14 13:29:31.025: E/AndroidRuntime(20404): FATAL EXCEPTION: AsyncTask #4
11-14 13:29:31.025: E/AndroidRuntime(20404): java.lang.RuntimeException: An error occured while executing doInBackground()
11-14 13:29:31.025: E/AndroidRuntime(20404): at android.os.AsyncTask$3.done(AsyncTask.java:278)
11-14 13:29:31.025: E/AndroidRuntime(20404): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
11-14 13:29:31.025: E/AndroidRuntime(20404): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
11-14 13:29:31.025: E/AndroidRuntime(20404): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
11-14 13:29:31.025: E/AndroidRuntime(20404): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
11-14 13:29:31.025: E/AndroidRuntime(20404): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
11-14 13:29:31.025: E/AndroidRuntime(20404): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
11-14 13:29:31.025: E/AndroidRuntime(20404): at java.lang.Thread.run(Thread.java:864)
11-14 13:29:31.025: E/AndroidRuntime(20404): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
11-14 13:29:31.025: E/AndroidRuntime(20404): at android.os.Handler.<init>(Handler.java:121)
11-14 13:29:31.025: E/AndroidRuntime(20404): at android.widget.ZoomButtonsController$2.<init>(ZoomButtonsController.java:170)
11-14 13:29:31.025: E/AndroidRuntime(20404): at android.widget.ZoomButtonsController.<init>(ZoomButtonsController.java:170)
11-14 13:29:31.025: E/AndroidRuntime(20404): at com.google.android.maps.MapView.createZoomButtonsController(MapView.java:1444)
11-14 13:29:31.025: E/AndroidRuntime(20404): at com.google.android.maps.MapView.setBuiltInZoomControls(MapView.java:1498)
11-14 13:29:31.025: E/AndroidRuntime(20404): at com.carefreegroup.GetClientDirections.getRoute(GetClientDirections.java:173)
11-14 13:29:31.025: E/AndroidRuntime(20404): at com.carefreegroup.GetClientDirections$AsyncGetRoute.doInBackground(GetClientDirections.java:87)
11-14 13:29:31.025: E/AndroidRuntime(20404): at com.carefreegroup.GetClientDirections$AsyncGetRoute.doInBackground(GetClientDirections.java:1)
11-14 13:29:31.025: E/AndroidRuntime(20404): at android.os.AsyncTask$2.call(AsyncTask.java:264)
11-14 13:29:31.025: E/AndroidRuntime(20404): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
.
public class GetClientDirections extends MapActivity {
private MapController mapController;
private MapView mapView;
private List<Overlay> mapOverlays;
private StringBuffer response = null;
private static final String TAG = GetClientDirections.class.getSimpleName();
private double lon;
private double lat;
private JSONArray routes = null;
private JSONObject bounds = null;
private JSONObject northeast = null;
private JSONObject anonObject;
private JSONObject overViewPolyline;
private String stringUrl;
private String polyPoints;
Context context;
private String endAddr;
private String startAddr;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mapview);
context = this;
startAddr = "wf120lj";
endAddr = "wf27ar";
StringBuilder sb = new StringBuilder();
sb.append("http://maps.google.com/maps/api/directions/json?origin=");
sb.append(startAddr);
sb.append("&destination=");
sb.append(endAddr);
sb.append("&sensor=false");
stringUrl = sb.toString();
Log.e(TAG, "url = " + stringUrl);
AsyncGetRoute agr = new AsyncGetRoute();
agr.execute();
}// end of onCreate
private class AsyncGetRoute extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... params) {
getRoute();
return null;
}
}
public void getRoute() {
response = new StringBuffer();
URL url = null;
try {
url = new URL(stringUrl);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
HttpURLConnection httpconn = null;
try {
httpconn = (HttpURLConnection) url.openConnection();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
if (httpconn.getResponseCode() == HttpURLConnection.HTTP_OK) {
// Log.e(TAG,"response code OK ");
BufferedReader input = new BufferedReader(
new InputStreamReader(httpconn.getInputStream()), 8192);
String strLine = null;
while ((strLine = input.readLine()) != null) {
// Log.e(TAG,""+strLine);
response.append(strLine);
}
input.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String jsonOutput = response.toString();
Log.e(TAG, "jsonOutput = " + jsonOutput);
JSONObject results = null;
try {
results = new JSONObject(jsonOutput);
routes = results.getJSONArray("routes");
anonObject = routes.getJSONObject(0);
bounds = anonObject.getJSONObject("bounds");
overViewPolyline = anonObject.getJSONObject("overview_polyline");
polyPoints = overViewPolyline.getString("points");
Log.e(TAG, "overview_polyline = " + overViewPolyline);
Log.e(TAG, "points = " + polyPoints);
northeast = bounds.getJSONObject("northeast");
lat = (Double) northeast.get("lat");
lon = (Double) northeast.get("lng");
Log.e(TAG, "lon/lat = " + lon + " " + lat);
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
List<GeoPoint> list = decodePoly(polyPoints);
mapView = (MapView) findViewById(R.id.cfmapview);
mapView.setBuiltInZoomControls(true);
mapView.setEnabled(true);
mapView.setSatellite(true);
mapController = mapView.getController();
mapController.setZoom(10);
mapOverlays = mapView.getOverlays();
mapOverlays.add(new RoutePathOverlay(list, getApplicationContext()));
mapController.animateTo(new GeoPoint(list.get(0).getLatitudeE6(), list
.get(0).getLongitudeE6()));
mapView.invalidate();
}// end of getRoute
private List<GeoPoint> decodePoly(String encoded) {
List<GeoPoint> poly = new ArrayList<GeoPoint>();
int index = 0, len = encoded.length();
int lat = 0, lng = 0;
while (index < len) {
int b, shift = 0, result = 0;
do {
b = encoded.charAt(index++) - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lat += dlat;
shift = 0;
result = 0;
do {
b = encoded.charAt(index++) - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lng += dlng;
GeoPoint p = new GeoPoint((int) (((double) lat/1E5) * 1E6),
(int) (((double) lng/1E5) * 1E6));
poly.add(p);
}
return poly;
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
대단히 감사합니다. 멍청한 실수! – turtleboy
4가 아니라 2.1이 아니기 시작한 것은 흥미 롭습니다. 구현을 변경해야한다고 생각합니다. – dmon
2.1에서 작동 할 때 UI에서 네트워크 작업을 수행하는 것이 좋다고 생각하여 비동기가 없었습니다. 4에서 당신은 비동기가 필요합니다. 그래서 내가 왜 오류를 가지는지, 나는 비동기를 올바르게 구현하지 못했습니다. – turtleboy