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我使用 Google Maps API 实现了一个 map 方法。昨天，它工作正常。从那以后，我完全没有对 eclipse、任何与地图相关的方法（包括视图和 MapActivity 类）或清单中相应条目中的任何内容进行任何更改——我唯一更改的是添加一个启动屏幕，从而将启动器活动从 MyLITactivity 更改为 SplashActivity。

我的 API 密钥在清单中，并且我在清单中包含了 uses-library 条目。

当我运行应用程序时，logcat 显示：

05-06 16:12:04.855: I/dalvikvm(753): Failed resolving Lcom/mad/mylit/MapActivity; interface 486 'Lcom/google/android/gms/maps/GoogleMap$OnMapClickListener;'
05-06 16:12:04.855: W/dalvikvm(753): Link of class 'Lcom/mad/mylit/MapActivity;' failed
05-06 16:12:04.855: E/dalvikvm(753): Could not find class 'com.mad.mylit.MapActivity', referenced from method com.mad.mylit.MyLITactivity.startMaps
05-06 16:12:04.855: W/dalvikvm(753): VFY: unable to resolve const-class 495 (Lcom/mad/mylit/MapActivity;) in Lcom/mad/mylit/MyLITactivity;
05-06 16:12:04.855: D/dalvikvm(753): VFY: replacing opcode 0x1c at 0x0002

我的清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mad.mylit"
    android:installLocation="auto"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="17" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <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/lit_logo"
        android:label="@string/app_name"
        android:theme="@style/Theme.litac" >
        <activity
            android:name="com.mad.mylit.MyLITactivity"
            android:label="@string/app_name"
            android:theme="@style/Theme.litac" >
        </activity>
        <activity
            android:name="com.mad.mylit.ItemListActivity"
            android:label="@string/title_item_list" >
        </activity>
        <activity
            android:name="com.mad.mylit.ItemDetailActivity"
            android:label="@string/title_item_detail"
            android:parentActivityName=".ItemListActivity" >
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value=".ItemListActivity" />
        </activity>
        <activity
            android:name="com.mad.mylit.NewsDetailFragment"
            android:label="@string/title_activity_news_detail_fragment" >
        </activity>
        <activity
            android:name="com.mad.mylit.NewsListFragment"
            android:label="@string/title_activity_news_list_fragment" >
        </activity>
        <activity
            android:name="com.mad.mylit.NewsActivity"
            android:label="@string/title_activity_news" >
        </activity>
        <activity
            android:name="com.mad.mylit.DetailActivity"
            android:label="SU News" >
        </activity>
        <activity
            android:name="com.mad.mylit.TimetableActivity"
            android:label="@string/title_activity_timetable" >
        </activity>
        <activity
            android:name="com.mad.mylit.MoodleActivity"
            android:label="@string/title_activity_moodle" >
        </activity>
        <activity
            android:name="com.mad.mylit.SplashActivity"
            android:configChanges="orientation|keyboardHidden|screenSize"
            android:label="@string/app_name"
            android:theme="@style/FullscreenTheme" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <uses-library android:name="com.google.android.maps" />

        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="xxxxxxxxxxxxxxxxxxxxx" />

        <activity
            android:name="com.mad.mylit.MapActivity"
            android:label="@string/title_activity_map"
            android:parentActivityName="com.mad.mylit.MyLITactivity" >
            android:theme="@style/Theme.litac"
            android:uiOptions="splitActionBarWhenNarrow" >
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.mad.mylit.MyLITactivity" />
        </activity>


    </application>

</manifest>

地图活动：

public class MapActivity extends FragmentActivity implements OnMapClickListener, OnMapLongClickListener{

    final int RQS_GooglePlayServices = 1;
    private GoogleMap myMap;

    Location myLocation;
    LocationManager locationManager;
    String provider;

    OnLocationChangedListener myLocationListener = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        setupActionBar();

        android.support.v4.app.FragmentManager myFragmentManager = getSupportFragmentManager();
        SupportMapFragment mySupportMapFragment = (SupportMapFragment)myFragmentManager.findFragmentById(R.id.map);
        myMap = mySupportMapFragment.getMap();

        myMap.setMyLocationEnabled(true);

        myMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
        myMap.setOnMapClickListener(this);
        myMap.setOnMapLongClickListener(this);

        LocationManager service = (LocationManager) getSystemService(LOCATION_SERVICE);
        boolean enabled = service.isProviderEnabled(LocationManager.GPS_PROVIDER);
        if (!enabled) {
            startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
        }
    }

    public void activate(OnLocationChangedListener listener) {
        myLocationListener = listener;  
    }

    public void deactivate() {
        myLocationListener = null;
    }


    private void setupActionBar() {
        getActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.maps, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;
        case R.id.menu_legalnotices:
            String LicenseInfo = GooglePlayServicesUtil.getOpenSourceSoftwareLicenseInfo(
                    getApplicationContext());
            AlertDialog.Builder LicenseDialog = new AlertDialog.Builder(MapActivity.this);
            LicenseDialog.setTitle("Legal Notices");
            LicenseDialog.setMessage(LicenseInfo);
            LicenseDialog.show();
            return true;
        case R.id.itemid_1:
            Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("google.navigation:q=Limerick Institute of Technology, Limerick")); 
            startActivity(i);
            return true;
        case R.id.itemid_2:
            //TODO change to local map of LIT
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();

    }


    public void onLocationChanged(Location location) {
        myLocationListener.onLocationChanged(location);
        LatLng latlng = new LatLng(location.getLatitude(),location.getLongitude());
        myMap.animateCamera(CameraUpdateFactory.newLatLng(latlng));
    }


    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub

    }


    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub

    }


    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onMapLongClick(LatLng point) {
         //myMap.addMarker(new MarkerOptions().position(point).title(point.toString()));
    }


    @Override
    public void onMapClick(LatLng point) {
        //myMap.animateCamera(CameraUpdateFactory.newLatLng(point));        
    }

}

如果我注释掉 OnMapClickListener 和 OnMapLongClickListener 实现（及其相应的方法），错误就会消失。

4

1 回答 1

4

已解决：我删除并重新导入了所有库，修复了项目属性并进行了干净构建。

仍然不知道为什么它昨天有效而不是今天...

于 2013-05-06T16:19:25.923 回答