我收到此错误。我不知道出了什么问题。有人可以帮我吗?搜索了一下,但不知道如何解决它...这有点紧急。
这是我的代码:
package nearest.moskee.almawada;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;
import java.util.Locale;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.location.Address;
import android.location.Geocoder;
import android.os.AsyncTask;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import com.google.android.maps.GeoPoint;
public class MoskeeJSON extends Activity {
private Handler mHandler = new Handler(Looper.getMainLooper());
String url;
HttpClient httpclient;
InputStream is = null;
private class MyAsyncTask extends AsyncTask<Void, Void, Void> {
ProgressDialog mProgressDialog;
@Override
protected void onPostExecute(Void result) {
mProgressDialog.dismiss();
}
@Override
protected void onPreExecute() {
mProgressDialog = ProgressDialog.show(MoskeeJSON.this,
"Loading...", "Data is Loading...");
}
@Override
protected Void doInBackground(Void... params) {
try {
HttpPost httppost = new HttpPost(url);
//HttpGet httppost = new HttpGet(url);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
Log.e("url", url);
} catch (Exception e) {
Log.e("log_tag", "Error in http connection " + e.toString());
}
return null;
}
}
public JSONArray getCloseMosquesInJSON(float lat, float lng, float radius) {
String result = "";
try {
httpclient = new DefaultHttpClient();
url = "http://www.moskee.org/finder/getCloseDataInJSON.php?lat="
+ lat + "&lng=" + lng + "&radius=" + radius;
new MyAsyncTask().execute();
Log.v("URL =>", url);
} catch (Exception e) {
Log.e("log_tag", "Error in http connection " + e.toString());
}
// convert response to string
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result = sb.toString();
Log.e("result", result);
Log.e("resultLength", result.length() + "");
} catch (Exception e) {
Log.e("log_tag", "Error converting result " + e.toString());
}
// parse json data
if (result.length() == 5) {
Log.i("result is ", "LEEG");
return null;
} else {
JSONArray jArray = null;
try {
jArray = new JSONArray(result);
} catch (JSONException e) {
Log.e("log_tag", "Error parrsing data " + e.toString());
}
return jArray;
}
}
JSONObject jsonObject;
StringBuilder stringBuilder;
}
错误
06-07 15:04:07.329:I / dalvikvm(1643):threadid = 3:对信号3作出反应 06-07 15:04:07.370:I / dalvikvm(1643):写了堆栈跟踪 '/data/anr/traces.txt'06-07 15:04:07.828:I / dalvikvm(1643): threadid = 3:对信号作出反应3 06-07 15:04:07.898:I / dalvikvm(1643): 把堆栈痕迹写成'/data/anr/traces.txt'06-07 15:04:07.988: D / gralloc_goldfish(1643):未检测到GPU仿真的仿真器。 06-07 15:04:24.098:D / InputEventConsistencyVerifier(1643):KeyEvent: ACTION_UP但关键是没有关闭。 06-07 15:04:24.098: D / InputEventConsistencyVerifier(1643):in android.widget.EditText@412aa7f0 06-07 15:04:24.098: D / InputEventConsistencyVerifier(1643):0:发送于16907476000000, KeyEvent {action = ACTION_UP,keyCode = KEYCODE_TAB,scanCode = 15, metaState = 0,flags = 0x8,repeatCount = 0,eventTime = 16907476, downTime = 16907424,deviceId = 0,source = 0x301} 06-07 15:04:24.098: D / InputEventConsistencyVerifier(1643): - 最近的事件 - 06-07 15:04:24.098:D / InputEventConsistencyVerifier(1643):1:发送于 16902546208000,MotionEvent {action = ACTION_UP,id [0] = 0,x [0] = 229.0, y [0] = 2.0,toolType [0] = TOOL_TYPE_FINGER,buttonState = 0,metaState = 0, flags = 0x0,edgeFlags = 0x0,pointerCount = 1,historySize = 0, eventTime = 16902546,downTime = 16902470,deviceId = 0,source = 0x1002} 06-07 15:04:24.098:D / InputEventConsistencyVerifier(1643):2:已发送 在16902470916000,MotionEvent {action = ACTION_DOWN,id [0] = 0, x [0] = 229.0,y [0] = 2.0,toolType [0] = TOOL_TYPE_FINGER,buttonState = 0, metaState = 0,flags = 0x0,edgeFlags = 0x0,pointerCount = 1,historySize = 0, eventTime = 16902470,downTime = 16902470,deviceId = 0,source = 0x1002} 06-07 15:04:27.649:V / Adres =&gt;(1643):Pierenbergstraat,Antwerpen 06-07 15:04:27.649:V / IL GeoPoint纬度=&gt;(1643):51.18809127807617 06-07 15:04:27.669:V / IL GeoPoint经度=&gt;(1643): 4.380319118499756 06-07 15:04:27.679:E / GA(1643):GA 06-07 15:04:28.219:I / dalvikvm(1643):threadid = 3:对信号3 06-07作出反应 15:04:28.339:I / dalvikvm(1643):写了堆栈跟踪 '/data/anr/traces.txt'06-07 15:04:28.419:D / dalvikvm(1643): GC_CONCURRENT释放192K,3%免费9323K / 9607K,暂停7ms + 6ms 06-07 15:04:28.419:W / CursorWrapperInner(1643):光标没有完成 previous close()06-07 15:04:28.419:W / CursorWrapperInner(1643):光标 没有事先关闭的最终确定()06-07 15:04:28.719:I / dalvikvm(1643): threadid = 3:对信号作出反应3 06-07 15:04:28.719:D / dalvikvm(1643): GC_FOR_ALLOC释放54K,3%免费9653K / 9927K,暂停54ms 06-07 15:04:28.829:I / dalvikvm(1643):写了堆栈跟踪 '/data/anr/traces.txt'06-07 15:04:28.909:E / log_tag(1643):错误 http连接java.lang.NullPointerException 06-07 15:04:28.909: E / log_tag(1643):转换结果时出错 java.lang.NullPointerException 06-07 15:04:28.909:E / log_tag(1643): 错误标记数据org.json.JSONException:字符输入结束 0 of 06-07 15:04:29.110:I / Center map?(1643):51188091,4380319 06-07 15:04:29.110:我/中心地图?(1643):Toegepast zonder erreurs 06-07 15:04:29.259:I / dalvikvm(1643):threadid = 3:对信号3 06-07作出反应 15:04:29.370:I / dalvikvm(1643):写了堆栈跟踪 '/data/anr/traces.txt'06-07 15:04:29.649:I / MapActivity(1643): 处理网络变更通知:CONNECTED 06-07 15:04:29.649: E / MapActivity(1643):无法获得连接工厂客户端06-07 15:04:29.810:I / dalvikvm(1643):threadid = 3:对信号3 06-07作出反应 15:04:29.910:I / dalvikvm(1643):写了堆栈跟踪 '/data/anr/traces.txt'06-07 15:04:30.089:D / dalvikvm(1643): GC_FOR_ALLOC释放32K,3%免费9946K / 10183K,暂停59ms 06-07 15:04:30.229:I / dalvikvm(1643):threadid = 3:对信号3 06-07作出反应 15:04:30.389:I / dalvikvm(1643):写了堆栈跟踪 '/data/anr/traces.txt'06-07 15:04:31.499:D / dalvikvm(1643): GC_CONCURRENT释放99K,2%免费10360K / 10567K,暂停8ms + 7ms
MoskeeResult
package nearest.moskee.almawada;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.AlertDialog;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;
public class MoskeeResults extends MapActivity {
MapView mapView;
MapController mc;
GeoPoint p;
@SuppressWarnings("unused")
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mapView = (MapView) findViewById(R.id.myMap);
mapView.setBuiltInZoomControls(true);
List<Overlay> mapOverlays = mapView.getOverlays();
Drawable drawable = this.getResources().getDrawable(
R.drawable.iconmoskee);
OverlayItems itemizedoverlay = new OverlayItems(drawable,this);
try {
MoskeeJSON m = new MoskeeJSON();
Bundle extras = getIntent().getExtras();
float lat = 0;
float lng = 0;
float radius = 1;
lat = (float) extras.getDouble("lat");
lng = (float) extras.getDouble("lng");
JSONArray arrMosques = m.getCloseMosquesInJSON(lat, lng, radius);
if (arrMosques != null) {
Log.i("Array aangemaakt", "Array is aangemaakt, het bevat "
+ arrMosques.length() + " moskeëen");
for (int i = 0; i < arrMosques.length(); i++) {
JSONObject row;
row = arrMosques.getJSONObject(i);
double jlat = row.getDouble("Latitude");
double jlng = row.getDouble("Longitude");
OverlayItem overlayitem = new OverlayItem(new GeoPoint(
(int) (jlat * 1e6), (int) (jlng * 1e6)),
row.getString("Naam"), row.getString("Straat"));
itemizedoverlay.addOverlay(overlayitem);
Log.i("=>", "Another mosque is added to the map");
}
Log.i("Array aangemaakt", "Array is aangemaakt, het bevat "
+ arrMosques.length() + " moskeëen");
AlertDialog alert = new AlertDialog.Builder(this)
.setTitle("Aantal gevonden moskeëen")
.setMessage(
"Er zijn " + arrMosques.length()
+ " moskeëen gevonden in deze straal")
.create();
alert.show();
} else {
AlertDialog alert = new AlertDialog.Builder(this)
.setTitle("Aantal gevonden moskeëen")
.setMessage(
"Er zijn geen moskeëen gevonden in deze straal.\nProbeer opnieuw te zoeken met een groter bereik")
.create();
alert.show();
}
mapOverlays.add(itemizedoverlay);
mc = mapView.getController();
GeoPoint center = new GeoPoint((int) (lat * 1e6), (int) (lng * 1e6));
Log.i("Center map?", "" + (int) (lat * 1e6) + ","
+ (int) (lng * 1e6));
mc.setCenter(center);
Log.i("Center map?", "Toegepast zonder erreurs");
mc.setZoom(17);
} catch ( JSONException e) {
// TODO Auto-generated catch block
Log.i("JASOEN EXCEPTIOEN",
"I have absolutely no idea what's going on..."
+ e.getMessage());
e.printStackTrace();
}
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
答案 0 :(得分:0)
正如您所指出的,错误位于您记录的行中。
JSONArray arrMosques = m.getCloseMosquesInJSON(lat, lng, radius);
Log.i("Array aangemaakt", "Array is aangemaakt, het bevat " + arrMosques.length() + " moskeëen");
在您之前调用m.getCloseMosquesInJson()
之前,此方法可能会在以下代码块中返回null:
if (result.length() == 5) {
Log.i("result is ", "LEEG");
return null; // HERE
} else {
JSONArray jArray = null;
try {
jArray = new JSONArray(result);
} catch (JSONException e) {
Log.e("log_tag", "Error parrsing data " + e.toString());
}
return jArray; // HERE! might be null when JSONException was thrown
}
在记录数组长度之前,您应该检查null
!