我正在编辑一个Android应用程序，该应用程序在谷歌地图中显示用户的当前位置。但是，当我尝试通过意图调用活动时，它崩溃并关闭并显示错误“不幸的是，应用程序已停止”。我不知道为什么一切似乎都很完美。但是旧的应用程序在没有任何错误的情况下工作，现在编辑和编译的应用程序正在崩溃。请帮我摆脱这个问题。
这是我的Button XML代码： -
<Button
android:id="@+id/button1"
android:layout_width="180dp"
android:layout_height="40dp"
android:layout_marginLeft="80dp"
android:layout_marginTop="41dp"
android:background="@drawable/hot"
android:onClick="MyPlace"
android:text="MyPlace" />
然后我的java代码调用Activity： -
public void MyPlace(View v){
Intent ii= new Intent(Dashboard.this,Myplace.class);
startActivity(ii);
}
Myplace.java
package com.example.arunj.neighbour.nearestneighbor;
import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.widget.TextView;
import android.widget.Toast;
import com.example.arunj.neighbour.R;
import com.example.arunj.neighbour.emergencybreakdown.DatabaseHelper;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
public class Myplace extends FragmentActivity implements LocationListener {
GoogleMap googleMap;
DatabaseHelper dbh;
String lat, lan;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_myplace);
dbh = new DatabaseHelper(Myplace.this);
//show error dialog if GoolglePlayServices not available
if (!isGooglePlayServicesAvailable()) {
finish();
}
SupportMapFragment supportMapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.googleMap);
googleMap = supportMapFragment.getMap();
googleMap.setMyLocationEnabled(true);
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
String bestProvider = locationManager.getBestProvider(criteria, true);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
Location location = locationManager.getLastKnownLocation(bestProvider);
Toast.makeText(getApplicationContext(), (CharSequence) location,Toast.LENGTH_SHORT).show();
if (location != null) {
onLocationChanged(location);
}
locationManager.requestLocationUpdates(bestProvider, 20000, 0, this);
}
@Override
public void onLocationChanged(Location location) {
TextView locationTv = (TextView) findViewById(R.id.latlongLocation);
double latitude = location.getLatitude();
double longitude = location.getLongitude();
lat=String.valueOf(latitude);
lan=String.valueOf(longitude);
dbh.open();
dbh.register(lat,lan);
LatLng latLng = new LatLng(latitude, longitude);
googleMap.addMarker(new MarkerOptions().position(latLng));
googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
googleMap.animateCamera(CameraUpdateFactory.zoomTo(15));
locationTv.setText("Latitude:" + latitude + ", Longitude:" + longitude);
Toast.makeText(getApplicationContext(),"latitude"+lat,Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(),"longitude"+lan,Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(),"Location Registration",Toast.LENGTH_SHORT).show();
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
private boolean isGooglePlayServicesAvailable() {
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (ConnectionResult.SUCCESS == status) {
return true;
} else {
GooglePlayServicesUtil.getErrorDialog(status, this, 0).show();
return false;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.myplace, menu);
return true;
}
}
AndroidManifiest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.arunj.neighbour">
<uses-permission android:name="com.example.emergencybreakdown.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-feature android:name="android.hardware.camera" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.arunj.neighbour.nearestneighbor.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>
<activity
android:name="com.example.arunj.neighbour.nearestneighbor.Dashboard"
android:label="@string/title_activity_dashboard" >
</activity>
<activity
android:name="com.example.arunj.neighbour.nearestneighbor.Showmaps"
android:label="@string/title_activity_showmaps" >
</activity>
<activity
android:name="com.example.arunj.neighbour.nearestneighbor.Myplace"
android:label="@string/title_activity_myplace" >
</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="AIzaSyBMLBq4wORxPZf7y2CpOzxLJ3UpEOUbjbs" />
<activity
android:name="com.example.arunj.neighbour.nearestneighbor.Power"
android:label="@string/title_activity_power" >
</activity>
<!--<activity
android:name="com.example.arunj.neighbour.emergencybreakdown.Places"
android:label="@string/title_activity_places" >
</activity>-->
<activity
android:name="com.example.arunj.neighbour.emergencybreakdown.CurrentPlace"
android:label="@string/title_activity_current_place" >
</activity>
<activity
android:name="com.example.arunj.neighbour.emergencybreakdown.Admin"
android:label="@string/title_activity_admin" >
</activity>
<activity
android:name="com.example.arunj.neighbour.emergencybreakdown.AdminDash"
android:label="@string/title_activity_admin_dash" >
</activity>
</application>
</manifest>
Logcat消息： -
03-23 19:10:17.302 28073-28073/com.example.arunj.neighbour E/AndroidRuntime:
FATAL EXCEPTION: main
Process: com.example.arunj.neighbour, PID: 28073
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/R$styleable;
at com.google.android.gms.maps.GoogleMapOptions.createFromAttributes(Unknown Source)
at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
at android.support.v4.app.Fragment.onInflate(Fragment.java:1306)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3672)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338)
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:754)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:835)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:435)
at android.app.Activity.setContentView(Activity.java:2211)
at com.example.arunj.neighbour.nearestneighbor.Myplace.onCreate(Myplace.java:36)
at android.app.Activity.performCreate(Activity.java:6583)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1114)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2531)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2666)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1493)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5769)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.R$styleable" on path: DexPathList[[zip file "/data/app/com.example.arunj.neighbour-2/base.apk"],nativeLibraryDirectories=[/data/app/com.example.arunj.neighbour-2/lib/arm64, /vendor/lib64, /system/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at com.google.android.gms.maps.GoogleMapOptions.createFromAttributes(Unknown Source)
at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
at android.support.v4.app.Fragment.onInflate(Fragment.java:1306)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3672)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338)
at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:754)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:835)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:435)
at android.app.Activity.setContentView(Activity.java:2211)
at com.example.arunj.neighbour.nearestneighbor.Myplace.onCreate(Myplace.java:36)
at android.app.Activity.performCreate(Activity.java:6583)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1114)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2531)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2666)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1493)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5769)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
Suppressed: java.lang.ClassNotFoundException: com.google.android.gms.R$styleable
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 31 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
使用一些旧版Android Studio创建应用程序还有一件事，但现在我正在使用Android Studio 3.0进行编辑。
答案 0 :(得分：0)
我通过在项目的build.gradle文件中添加这些依赖项来解决了这个问题。
dependencies {
compile 'com.google.android.gms:play-services-base:6.5.87'
compile 'com.google.android.gms:play-services-maps:6.5.87'
}