就在我点击按钮时，我想根据给定的 lan 和 lat 点显示 gogle 地图，但是当我想点击它时，我得到 java.lang.NoClassDefFoundError: com/androidhive/googleplacesandmaps/PlacesMapActivity 当我在我的设备中访问谷歌地图时
如何解决这个问题？
MainActivity.java
btnShowOnMap.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent i = new Intent(getApplicationContext(),PlacesMapActivity.class);
// Sending user current geo location
i.putExtra("user_latitude", Double.toString(gps.getLatitude()));
i.putExtra("user_longitude", Double.toString(gps.getLongitude()));
// passing near places to map activity
i.putExtra("near_places", nearPlaces);
// staring activity
startActivity(i);
}
});
地点地图活动
public class PlacesMapActivity extends MapActivity {
// Nearest places
PlacesList nearPlaces;
// Map view
MapView mapView;
// Map overlay items
List<Overlay> mapOverlays;
AddItemizedOverlay itemizedOverlay;
GeoPoint geoPoint;
// Map controllers
MapController mc;
double latitude;
double longitude;
OverlayItem overlayitem;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map_places);
// Getting intent data
Intent i = getIntent();
// Users current geo location
String user_latitude = i.getStringExtra("user_latitude");
String user_longitude = i.getStringExtra("user_longitude");
// Nearplaces list
nearPlaces = (PlacesList) i.getSerializableExtra("near_places");
mapView = (MapView) findViewById(R.id.mapView);
mapView.setBuiltInZoomControls(true);
mapOverlays = mapView.getOverlays();
// Geopoint to place on map
geoPoint = new GeoPoint(
(int) (Double.parseDouble(user_latitude) * 1E6),
(int) (Double.parseDouble(user_longitude) * 1E6));
// Drawable marker icon
Drawable drawable_user = this.getResources().getDrawable(
R.drawable.mark_red);
itemizedOverlay = new AddItemizedOverlay(drawable_user, this);
// Map overlay item
overlayitem = new OverlayItem(geoPoint, "Your Location", "That is you!");
itemizedOverlay.addOverlay(overlayitem);
mapOverlays.add(itemizedOverlay);
itemizedOverlay.populateNow();
// Drawable marker icon
Drawable drawable = this.getResources().getDrawable(
R.drawable.mark_blue);
itemizedOverlay = new AddItemizedOverlay(drawable, this);
mc = mapView.getController();
// These values are used to get map boundary area
// The area where you can see all the markers on screen
int minLat = Integer.MAX_VALUE;
int minLong = Integer.MAX_VALUE;
int maxLat = Integer.MIN_VALUE;
int maxLong = Integer.MIN_VALUE;
// check for null in case it is null
if (nearPlaces.results != null) {
// loop through all the places
for (Place place : nearPlaces.results) {
latitude = place.geometry.location.lat; // latitude
longitude = place.geometry.location.lng; // longitude
// Geopoint to place on map
geoPoint = new GeoPoint((int) (latitude * 1E6),
(int) (longitude * 1E6));
// Map overlay item
overlayitem = new OverlayItem(geoPoint, place.name,
place.vicinity);
itemizedOverlay.addOverlay(overlayitem);
// calculating map boundary area
minLat = (int) Math.min(geoPoint.getLatitudeE6(), minLat);
minLong = (int) Math.min(geoPoint.getLongitudeE6(), minLong);
maxLat = (int) Math.max(geoPoint.getLatitudeE6(), maxLat);
maxLong = (int) Math.max(geoPoint.getLongitudeE6(), maxLong);
}
mapOverlays.add(itemizedOverlay);
// showing all overlay items
itemizedOverlay.populateNow();
}
// Adjusting the zoom level so that you can see all the markers on map
mapView.getController().zoomToSpan(Math.abs(minLat - maxLat),
Math.abs(minLong - maxLong));
// Showing the center of the map
mc.animateTo(new GeoPoint((maxLat + minLat) / 2,
(maxLong + minLong) / 2));
mapView.postInvalidate();
}
@Override
protected boolean isRouteDisplayed() {
return false;
}
}
显现
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.androidhive.googleplacesandmaps"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<!-- Internet Permissions -->
<uses-permission android:name="android.permission.INTERNET" />
<!-- Network State Permissions -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<!-- Access Location -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
android:allowBackup="true" >
<!-- Add Google Map Library -->
<uses-library
android:name="com.google.android.maps"
android:required="true" />
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- SinglePlaceActivity -->
<activity
android:name=".SinglePlaceActivity"
android:label="Place Details" >
</activity>
<!-- PlacesMapActivity -->
<activity
android:name="PlacesMapActivity"
android:label="Near Places Map View" >
<intent-filter>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyChOUhcZd3M2WiPhfXE8apM3LTOTjrq30M" />
</intent-filter>
</activity>
</application>
</manifest>
日志猫
07-02 23:01:14.100: E/AndroidRuntime(9182): at com.androidhive.googleplacesandmaps.MainActivity$1.onClick(MainActivity.java:110)
07-02 23:01:14.100: E/AndroidRuntime(9182): at android.view.View.performClick(View.java:3528)
07-02 23:01:14.100: E/AndroidRuntime(9182): at android.view.View$PerformClick.run(View.java:14235)
07-02 23:01:14.100: E/AndroidRuntime(9182): at android.os.Handler.handleCallback(Handler.java:605)
07-02 23:01:14.100: E/AndroidRuntime(9182): at android.os.Handler.dispatchMessage(Handler.java:92)
07-02 23:01:14.100: E/AndroidRuntime(9182): at android.os.Looper.loop(Looper.java:137)
07-02 23:01:14.100: E/AndroidRuntime(9182): at android.app.ActivityThread.main(ActivityThread.java:4424)
07-02 23:01:14.100: E/AndroidRuntime(9182): at java.lang.reflect.Method.invokeNative(Native Method)
07-02 23:01:14.100: E/AndroidRuntime(9182): at java.lang.reflect.Method.invoke(Method.java:511)
07-02 23:01:14.100: E/AndroidRuntime(9182): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:817)
07-02 23:01:14.100: E/AndroidRuntime(9182): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
07-02 23:01:14.100: E/AndroidRuntime(9182): at dalvik.system.NativeStart.main(Native Method)
07-02 23:01:14.100: E/AndroidRuntime(9182): Caused by: java.lang.IllegalAccessError: Class ref in pre-verified class resolved to unexpected implementation
07-02 23:01:14.100: E/AndroidRuntime(9182): at dalvik.system.DexFile.defineClass(Native Method)
07-02 23:01:14.100: E/AndroidRuntime(9182): at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:195)
07-02 23:01:14.100: E/AndroidRuntime(9182): at dalvik.system.DexPathList.findClass(DexPathList.java:315)
07-02 23:01:14.100: E/AndroidRuntime(9182): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:58)
07-02 23:01:14.100: E/AndroidRuntime(9182): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
07-02 23:01:14.100: E/AndroidRuntime(9182): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
07-02 23:01:14.100: E/AndroidRuntime(9182): ... 12 more