问题
Here is MainActivity Class
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.json.JSONObject;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMapClickListener;
import com.google.android.gms.maps.GoogleMap.OnMapLongClickListener;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.PolylineOptions;
public class MainActivity extends FragmentActivity {
GoogleMap map;
ArrayList markerPoints;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initializing
markerPoints = new ArrayList();
// Getting reference to SupportMapFragment of the activity_main
SupportMapFragment fm = (SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map);
// Getting reference to Button
Button btnDraw = (Button)findViewById(R.id.btn_draw);
// Getting Map for the SupportMapFragment
map = fm.getMap();
// Enable MyLocation Button in the Map
map.setMyLocationEnabled(true);
// Setting onclick event listener for the map
map.setOnMapClickListener(new OnMapClickListener() {
@Override
public void onMapClick(LatLng point) {
// Already 10 locations with 8 waypoints and 1 start location and 1 end location.
// Upto 8 waypoints are allowed in a query for non-business users
if(markerPoints.size()>=10){
return;
}
// Adding new item to the ArrayList
markerPoints.add(point);
// Creating MarkerOptions
MarkerOptions options = new MarkerOptions();
// Setting the position of the marker
options.position(point);
/**
* For the start location, the color of marker is GREEN and
* for the end location, the color of marker is RED and
* for the rest of markers, the color is AZURE
*/
if(markerPoints.size()==1){
options.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
}else if(markerPoints.size()==2){
options.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
}else{
options.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE));
}
// Add new marker to the Google Map Android API V2
map.addMarker(options);
}
});
// The map will be cleared on long click
map.setOnMapLongClickListener(new OnMapLongClickListener() {
@Override
public void onMapLongClick(LatLng point) {
// Removes all the points from Google Map
map.clear();
// Removes all the points in the ArrayList
markerPoints.clear();
}
});
// Click event handler for Button btn_draw
btnDraw.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// Checks, whether start and end locations are captured
if(markerPoints.size() >= 2){
LatLng origin = markerPoints.get(0);
LatLng dest = markerPoints.get(1);
// Getting URL to the Google Directions API
String url = getDirectionsUrl(origin, dest);
DownloadTask downloadTask = new DownloadTask();
// Start downloading json data from Google Directions API
downloadTask.execute(url);
}
}
});
}
private String getDirectionsUrl(LatLng origin,LatLng dest){
// Origin of route
String str_origin = "origin="+origin.latitude+","+origin.longitude;
// Destination of route
String str_dest = "destination="+dest.latitude+","+dest.longitude;
// Sensor enabled
String sensor = "sensor=false";
// Waypoints
String waypoints = "";
for(int i=2;i{
// Downloading data in non-ui thread
@Override
protected String doInBackground(String... url) {
// For storing data from web service
String data = "";
try{
// Fetching the data from web service
data = downloadUrl(url[0]);
}catch(Exception e){
Log.d("Background Task",e.toString());
}
return data;
}
// Executes in UI thread, after the execution of
// doInBackground()
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
ParserTask parserTask = new ParserTask();
// Invokes the thread for parsing the JSON data
parserTask.execute(result);
}
}
/** A class to parse the Google Places in JSON format */
private class ParserTask extends AsyncTask>> >{
// Parsing the data in non-ui thread
@Override
protected List>> doInBackground(String... jsonData) {
JSONObject jObject;
List>> routes = null;
try{
jObject = new JSONObject(jsonData[0]);
DirectionsJSONParser parser = new DirectionsJSONParser();
// Starts parsing data
routes = parser.parse(jObject);
}catch(Exception e){
e.printStackTrace();
}
return routes;
}
// Executes in UI thread, after the parsing process
@Override
protected void onPostExecute(List>> result) {
ArrayList points = null;
PolylineOptions lineOptions = null;
// Traversing through all the routes
for(int i=0;i();
lineOptions = new PolylineOptions();
// Fetching i-th route
List> path = result.get(i);
// Fetching all the points in i-th route
for(int j=0;j point = path.get(j);
double lat = Double.parseDouble(point.get("lat"));
double lng = Double.parseDouble(point.get("lng"));
LatLng position = new LatLng(lat, lng);
points.add(position);
}
// Adding all the points in the route to LineOptions
lineOptions.addAll(points);
lineOptions.width(2);
lineOptions.color(Color.RED);
}
// Drawing polyline in the Google Map for the i-th route
map.addPolyline(lineOptions);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Direction Parser Class is like this
package in.wptrafficanalyzer.locationwaypointmapv2;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.google.android.gms.maps.model.LatLng;
public class DirectionsJSONParser {
/** Receives a JSONObject and returns a list of lists containing latitude and longitude */
public List>> parse(JSONObject jObject){
List>> routes = new ArrayList>>();
JSONArray jRoutes = null;
JSONArray jLegs = null;
JSONArray jSteps = null;
try {
jRoutes = jObject.getJSONArray("routes");
/** Traversing all routes */
for(int i=0;i>();
/** Traversing all legs */
for(int j=0;j list = decodePoly(polyline);
/** Traversing all points */
for(int l=0;l hm = new HashMap();
hm.put("lat", Double.toString(((LatLng)list.get(l)).latitude) );
hm.put("lng", Double.toString(((LatLng)list.get(l)).longitude) );
path.add(hm);
}
}
routes.add(path);
}
}
} catch (JSONException e) {
e.printStackTrace();
}catch (Exception e){
}
return routes;
}
/**
* Method to decode polyline points
* Courtesy : jeffreysambells.com/2010/05/27/decoding-polylines-from-google-maps-direction-api-with-java
* */
private List decodePoly(String encoded) {
List poly = new ArrayList();
int index = 0, len = encoded.length();
int lat = 0, lng = 0;
while (index = 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) = 0x20);
int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lng += dlng;
LatLng p = new LatLng((((double) lat / 1E5)),
(((double) lng / 1E5)));
poly.add(p);
}
return poly;
}
}
Android Manifest.xml is
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.INTERNET"/>
<permission
android:name="in.wptrafficanalyzer.locationwaypointmapv2.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="in.wptrafficanalyzer.locationwaypointmapv2.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="in.wptrafficanalyzer.locationwaypointmapv2.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyC6TVk6gtR_i_.......**************"/>
</application>
And Layout activity_main.xml is
<Button
android:id="@+id/btn_draw"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/str_btn_draw"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
<fragment
android:id="@+id/map"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
class="com.google.android.gms.maps.SupportMapFragment"
android:layout_above="@id/btn_draw" />
My LogCat file is
03-02 21:35:25.157: D/dalvikvm(25733): Late-enabling CheckJNI
03-02 21:35:25.758: D/AndroidRuntime(25733): Shutting down VM
03-02 21:35:25.758: W/dalvikvm(25733): threadid=1: thread exiting with uncaught exception (group=0x40ddd2a0)
03-02 21:35:25.768: E/AndroidRuntime(25733): FATAL EXCEPTION: main
03-02 21:35:25.768: E/AndroidRuntime(25733): java.lang.RuntimeException: Unable to start activity ComponentInfo{in.wptrafficanalyzer.locationwaypointmapv2/in.wptrafficanalyzer.locationwaypointmapv2.MainActivity}: android.view.InflateException: Binary XML file line #16: Error inflating class fragment
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2110)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.ActivityThread.access$700(ActivityThread.java:140)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.os.Handler.dispatchMessage(Handler.java:99)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.os.Looper.loop(Looper.java:137)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.ActivityThread.main(ActivityThread.java:4935)
03-02 21:35:25.768: E/AndroidRuntime(25733): at java.lang.reflect.Method.invokeNative(Native Method)
03-02 21:35:25.768: E/AndroidRuntime(25733): at java.lang.reflect.Method.invoke(Method.java:511)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
03-02 21:35:25.768: E/AndroidRuntime(25733): at dalvik.system.NativeStart.main(Native Method)
03-02 21:35:25.768: E/AndroidRuntime(25733): Caused by: android.view.InflateException: Binary XML file line #16: Error inflating class fragment
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:710)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.view.LayoutInflater.rInflate(LayoutInflater.java:752)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.view.LayoutInflater.inflate(LayoutInflater.java:495)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:316)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.Activity.setContentView(Activity.java:1924)
03-02 21:35:25.768: E/AndroidRuntime(25733): at in.wptrafficanalyzer.locationwaypointmapv2.MainActivity.onCreate(MainActivity.java:43)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.Activity.performCreate(Activity.java:5206)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
03-02 21:35:25.768: E/AndroidRuntime(25733): ... 11 more
03-02 21:35:25.768: E/AndroidRuntime(25733): Caused by: java.lang.IllegalStateException: The meta-data tag in your app's AndroidManifest.xml does not have the right value. Expected 4242000 but found 0. You must have the following declaration within the element:
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.common.GooglePlayServicesUtil.n(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.common.GooglePlayServicesUtil.isGooglePlayServicesAvailable(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.maps.internal.q.v(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.maps.internal.q.u(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.maps.MapsInitializer.initialize(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.maps.SupportMapFragment$b.ex(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.maps.SupportMapFragment$b.a(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.dynamic.a.a(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.dynamic.a.onInflate(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:279)
03-02 21:35:25.768: E/AndroidRuntime(25733): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:682)
03-02 21:35:25.768: E/AndroidRuntime(25733): ... 21 more
Please, help
回答1:
The problem is here:
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyC6TVk6gtR_i_.......**************"/>
The meta-data tag expects here an integer, so you'll have to include here the version of the com.google.android.maps lib you're using. You'll find this probably in the lib you're including in your project, then just define:
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="@integer/your_google_maps_version" />
回答2:
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyC6TVk6gtR_i_.......**************"/>
In manifest.xml just add this after application> tag and before your first activity
来源：https://stackoverflow.com/questions/22130409/android-android-view-inflateexception-binary-xml-file-line-16-error-inflating