我在我的应用程序中使用maps API，每当我启动活动时，我都会获得一个FC。源代码：
package com.spxc.nightclubratings;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.ActionBar;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.location.Address;
import android.location.Criteria;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.Toast;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnInfoWindowClickListener;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.spxc.nightclubratings.adapter.MainMapFragement;
import com.spxc.nightclubratings.classes.EventInfo;
import com.spxc.nightclubratings.parser.JSONParser;
public class MapsActivity extends Activity {
private MainMapFragement mapFragment;
private HashMap<Marker, EventInfo> eventMarkerMap;
private LatLng mPosition;
Geocoder geocoder;
String bestProvider;
List<Address> user = null;
double lat, lng;
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> locationList;
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_LOCATIONS = "locations";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_LOCATION = "location";
private static final String TAG_LAT = "lat";
private static final String TAG_LNG = "lng";
private static final String TAG_VERIFIED = "verified";
private static final String TAG_TRIBE = "tribe";
private static final String TAG_FEATURED = "featured";
private static String url_all_products = "http://appwhittle.com/api/db_all.php";
String id, name, verified, latS, lngS;
// products JSONArray
JSONArray products = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
ActionBar abs = getActionBar();
abs.setTitle(R.string.activity_title_map);
abs.setDisplayHomeAsUpEnabled(true);
abs.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#2c71b6")));
mapFragment = new MainMapFragement();
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.add(R.id.map, mapFragment);
ft.commit();
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
this.finish();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onStart() {
super.onStart();
new LoadAllLocations().execute();
//setUpEventSpots();
setCurrentLocationSpot();
}
private void setCurrentLocationSpot() {
LocationManager lm = (LocationManager) MapsActivity.this.getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
bestProvider = lm.getBestProvider(criteria, false);
Location location = lm.getLastKnownLocation(bestProvider);
if (location == null){
Toast.makeText(MapsActivity.this,"Location Not found",Toast.LENGTH_LONG).show();
}else{
geocoder = new Geocoder(MapsActivity.this);
try {
user = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
lat = (double)user.get(0).getLatitude();
lng = (double)user.get(0).getLongitude();
mPosition = new LatLng(lat, lng);
GoogleMap mGap = ((MapFragment) getFragmentManager()
.findFragmentById(R.id.map)).getMap();
mGap.setMyLocationEnabled(true);
mGap.animateCamera(CameraUpdateFactory.newLatLngZoom(mPosition, 13));
}catch (Exception e) {
e.printStackTrace();
}
}
}
class LoadAllLocations extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
}
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
products = json.getJSONArray(TAG_LOCATIONS);
} else {
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
runOnUiThread(new Runnable() {
public void run() {
for (int i = 0; i < products.length(); i++) {
try {
JSONObject c = products.getJSONObject(i);
id = c.getString(TAG_ID);
name = c.getString(TAG_NAME);
latS = c.getString(TAG_LAT);
lngS = c.getString(TAG_LNG);
int verified = c.getInt(TAG_VERIFIED);
int tribe = c.getInt(TAG_TRIBE);
int featured = c.getInt(TAG_FEATURED);
if (verified == 1) {
Double l1;
Double l2;
l1 = Double.parseDouble(latS);
l2 = Double.parseDouble(lngS);
EventInfo eventInfo = new EventInfo(new LatLng(l1, l2), name, new Date(), null);
Marker mMarker = mapFragment.placeMarker(eventInfo);
switch(tribe) {
case 1:
if (featured == 1) {
mMarker.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_YELLOW));
} else {
mMarker.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
}
eventMarkerMap = new HashMap<Marker, EventInfo>();
eventMarkerMap.put(mMarker, eventInfo);
break;
case 2:
if (featured == 1) {
mMarker.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_YELLOW));
} else {
mMarker.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_VIOLET));
}
eventMarkerMap = new HashMap<Marker, EventInfo>();
eventMarkerMap.put(mMarker, eventInfo);
break;
}
}else{
}
mapFragment.getMap().setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
public void onInfoWindowClick(Marker mMarker) {
EventInfo eventInfo = eventMarkerMap.get(mMarker);
Toast.makeText(getBaseContext(),
"The date of " + eventInfo.getName() + " is " + id,
Toast.LENGTH_LONG).show();
}
});
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
});
}
}
}
我的Logcat：
03-18 08:51:29.742: E/AndroidRuntime(8948): FATAL EXCEPTION: main
03-18 08:51:29.742: E/AndroidRuntime(8948): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.spxc.nightclubratings/com.spxc.nightclubratings.MapsActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.ActivityThread.access$700(ActivityThread.java:159)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.os.Handler.dispatchMessage(Handler.java:99)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.os.Looper.loop(Looper.java:137)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.ActivityThread.main(ActivityThread.java:5419)
03-18 08:51:29.742: E/AndroidRuntime(8948): at java.lang.reflect.Method.invokeNative(Native Method)
03-18 08:51:29.742: E/AndroidRuntime(8948): at java.lang.reflect.Method.invoke(Method.java:525)
03-18 08:51:29.742: E/AndroidRuntime(8948): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1209)
03-18 08:51:29.742: E/AndroidRuntime(8948): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1025)
03-18 08:51:29.742: E/AndroidRuntime(8948): at dalvik.system.NativeStart.main(Native Method)
03-18 08:51:29.742: E/AndroidRuntime(8948): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.view.LayoutInflater.inflate(LayoutInflater.java:470)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.view.LayoutInflater.inflate(LayoutInflater.java:354)
03-18 08:51:29.742: E/AndroidRuntime(8948): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:361)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.Activity.setContentView(Activity.java:1956)
03-18 08:51:29.742: E/AndroidRuntime(8948): at com.spxc.nightclubratings.MapsActivity.onCreate(MapsActivity.java:77)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.Activity.performCreate(Activity.java:5372)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257)
03-18 08:51:29.742: E/AndroidRuntime(8948): ... 11 more
03-18 08:51:29.742: E/AndroidRuntime(8948): Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.MapFragment: make sure class name exists, is public, and has an empty constructor that is public
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.Fragment.instantiate(Fragment.java:596)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.Fragment.instantiate(Fragment.java:560)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.Activity.onCreateView(Activity.java:4958)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:695)
03-18 08:51:29.742: E/AndroidRuntime(8948): ... 20 more
03-18 08:51:29.742: E/AndroidRuntime(8948): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.maps.MapFragment" on path: /data/app/com.spxc.nightclubratings-1.apk
03-18 08:51:29.742: E/AndroidRuntime(8948): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:64)
03-18 08:51:29.742: E/AndroidRuntime(8948): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
03-18 08:51:29.742: E/AndroidRuntime(8948): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
03-18 08:51:29.742: E/AndroidRuntime(8948): at android.app.Fragment.instantiate(Fragment.java:582)
03-18 08:51:29.742: E/AndroidRuntime(8948): ... 23 more
XML：
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.MapFragment" />
有什么问题？我添加了谷歌播放库。
非常感谢任何帮助：）
答案 0 :(得分：0)
我通过添加google play lib以及清理我的项目并在libs文件夹中添加jar来解决问题：）