绘图驾驶路线指示apk不在物理设备上运行
问题描述：
我是新的Android编程，我在网上找到了一些教程和代码，我目前正试图在我的设备上运行。 其中一个正好是下面的代码：绘图驾驶路线指示apk不在物理设备上运行
- > activity_main.xml中
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<fragment
android:id="@+id/map"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
class="com.google.android.gms.maps.SupportMapFragment" />
</RelativeLayout>
- > DirectionsJSONParser.java
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<List<HashMap<String,String>>> parse(JSONObject jObject){
List<List<HashMap<String, String>>> routes = new ArrayList<List<HashMap<String,String>>>() ;
JSONArray jRoutes = null;
JSONArray jLegs = null;
JSONArray jSteps = null;
try {
jRoutes = jObject.getJSONArray("routes");
/** Traversing all routes */
for(int i=0;i<jRoutes.length();i++){
jLegs = ((JSONObject)jRoutes.get(i)).getJSONArray("legs");
List path = new ArrayList<HashMap<String, String>>();
/** Traversing all legs */
for(int j=0;j<jLegs.length();j++){
jSteps = ((JSONObject)jLegs.get(j)).getJSONArray("steps");
/** Traversing all steps */
for(int k=0;k<jSteps.length();k++){
String polyline = "";
polyline = (String)((JSONObject)((JSONObject)jSteps.get(k)).get("polyline")).get("points");
List<LatLng> list = decodePoly(polyline);
/** Traversing all points */
for(int l=0;l<list.size();l++){
HashMap<String, String> hm = new HashMap<String, String>();
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 : http://jeffreysambells.com/2010/05/27/decoding-polylines-from-google-maps-direction-api-with-java
* */
private List<LatLng> decodePoly(String encoded) {
List<LatLng> poly = new ArrayList<LatLng>();
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;
LatLng p = new LatLng((((double) lat/1E5)),
(((double) lng/1E5)));
poly.add(p);
}
return poly;
}
}
- > MainActivity.java
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 com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMapClickListener;
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<LatLng> markerPoints;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initializing
markerPoints = new ArrayList<LatLng>();
// Getting reference to SupportMapFragment of the activity_main
SupportMapFragment fm = (SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map);
// Getting Map for the SupportMapFragment
map = fm.getMap();
if(map!=null){
// 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 two locations
if(markerPoints.size()>1){
markerPoints.clear();
map.clear();
}
// 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.
*/
if(markerPoints.size()==1){
options.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
}else if(markerPoints.size()==2){
options.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
}
// Add new marker to the Google Map Android API V2
map.addMarker(options);
// 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";
// Building the parameters to the web service
String parameters = str_origin+"&"+str_dest+"&"+sensor;
// Output format
String output = "json";
// Building the url to the web service
String url = "https://maps.googleapis.com/maps/api/directions/"+output+"?"+parameters;
return url;
}
/** A method to download json data from url */
private String downloadUrl(String strUrl) throws IOException{
String data = "";
InputStream iStream = null;
HttpURLConnection urlConnection = null;
try{
URL url = new URL(strUrl);
// Creating an http connection to communicate with url
urlConnection = (HttpURLConnection) url.openConnection();
// Connecting to url
urlConnection.connect();
// Reading data from url
iStream = urlConnection.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(iStream));
StringBuffer sb = new StringBuffer();
String line = "";
while((line = br.readLine()) != null){
sb.append(line);
}
data = sb.toString();
br.close();
}catch(Exception e){
Log.d("Exception while downloading url", e.toString());
}finally{
iStream.close();
urlConnection.disconnect();
}
return data;
}
// Fetches data from url passed
private class DownloadTask extends AsyncTask<String, Void, String>{
// 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<String, Integer, List<List<HashMap<String,String>>> >{
// Parsing the data in non-ui thread
@Override
protected List<List<HashMap<String, String>>> doInBackground(String... jsonData) {
JSONObject jObject;
List<List<HashMap<String, String>>> 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<List<HashMap<String, String>>> result) {
ArrayList<LatLng> points = null;
PolylineOptions lineOptions = null;
MarkerOptions markerOptions = new MarkerOptions();
// Traversing through all the routes
for(int i=0;i<result.size();i++){
points = new ArrayList<LatLng>();
lineOptions = new PolylineOptions();
// Fetching i-th route
List<HashMap<String, String>> path = result.get(i);
// Fetching all the points in i-th route
for(int j=0;j<path.size();j++){
HashMap<String,String> 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;
}`enter code here`
}
- > AndroidManifest.xml
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.INTERNET"/>
<permission
android:name="com.example.mapnavi.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.mapnavi.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="com.example.mapnavi.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="MY_API_KEY"/>
</application>
</manifest>
此代码应该在Android 2.3.6或更高版本上运行，但尽管我付出了努力，但我无法在运行Android 4.3的手机上运行它（因为我的电脑速度很慢并且需要很长时间才能打开仿真器）。没有错误，该应用程序已成功安装，并试图打开时崩溃。
有人能告诉我什么是错，或者我做错了什么？ 预先感谢您的时间。
这里如下堆栈跟踪：
07-16 11:13:19.630: E/AndroidRuntime(17411): FATAL EXCEPTION: main
07-16 11:13:19.630: E/AndroidRuntime(17411): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.mapnavi/com.example.mapnavi.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.ActivityThread.access$700(ActivityThread.java:159)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.os.Handler.dispatchMessage(Handler.java:99)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.os.Looper.loop(Looper.java:176)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.ActivityThread.main(ActivityThread.java:5419)
07-16 11:13:19.630: E/AndroidRuntime(17411): at java.lang.reflect.Method.invokeNative(Native Method)
07-16 11:13:19.630: E/AndroidRuntime(17411): at java.lang.reflect.Method.invoke(Method.java:525)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
07-16 11:13:19.630: E/AndroidRuntime(17411): at dalvik.system.NativeStart.main(Native Method)
07-16 11:13:19.630: E/AndroidRuntime(17411): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.view.LayoutInflater.inflate(LayoutInflater.java:354)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:361)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.Activity.setContentView(Activity.java:1956)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.example.mapnavi.MainActivity.onCreate(MainActivity.java:36)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.Activity.performCreate(Activity.java:5372)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257)
07-16 11:13:19.630: E/AndroidRuntime(17411): ... 11 more
07-16 11:13:19.630: E/AndroidRuntime(17411): Caused by: java.lang.IllegalStateException: The meta-data tag in your app's AndroidManifest.xml does not have the right value. Expected 5077000 but found 0. You must have the following declaration within the <application> element: <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.common.GooglePlayServicesUtil.x(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.common.GooglePlayServicesUtil.isGooglePlayServicesAvailable(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.maps.internal.u.F(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.maps.internal.u.E(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.maps.MapsInitializer.initialize(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.maps.SupportMapFragment$b.ju(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.maps.SupportMapFragment$b.a(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.dynamic.a.a(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.dynamic.a.onInflate(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:291)
07-16 11:13:19.630: E/AndroidRuntime(17411): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691)
07-16 11:13:19.630: E/AndroidRuntime(17411): ... 21 more
答
解决它自己。
更改AndroidManifest.xml中的以下内容：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mapnavi"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="12"
android:targetSdkVersion="20" />
<uses-permission android:name="android.permission.INTERNET"/>
<permission
android:name="com.example.mapnavi.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.mapnavi.permission.MAPS_RECEIVE" />
<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-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<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="com.example.mapnavi.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.gms.version"
android:value="@integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="my_api_key_was_here"/>
</application>
</manifest>
像第一标签有些元素人失踪
后从logcat的堆栈跟踪，我们可以帮助你。 –
@KarimVarela根据您的请求发布堆栈跟踪 –