java谷歌地图不会出现

1 周，5 日 Questions & Answers 95

我正在做一个涉及“兴趣点”定位器的项目。我有一个生成的Google Maps API v2密钥，我已经向AndroidManifest添加了所有正确的权限（如下所示），所有内容都可以编译。。。除了地图本身！有一个标记可以显示你当前的位置和GPS坐标，但不显示地图，这一点毋庸置疑是必不可少的。此外，也没有运行时错误，除了LogCat在“有太多的输出要处理”时说。任何帮助都将不胜感激

安卓清单

    package="com.example.kavin_000.travelapplication" >
    <!-- suppress AndroidDomInspection -->
    <uses-sdk
    安卓:minSdkVersion="7"
    安卓:targetSdkVersion="19" />

    <permission
        安卓:name="com.example.kavin_000.travelapplication.permission.MAPS_RECEIVE"
        安卓:protectionLevel="signature" />


    <uses-permission 安卓:name="com.example.kavin_000.travelapplication.permission.MAPS_RECEIVE" />
    <uses-permission 安卓:name="安卓.permission.INTERNET" />
    <uses-permission 安卓:name="安卓.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission 安卓:name="com.google.安卓.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission 安卓:name="安卓.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission 安卓:name="安卓.permission.ACCESS_FINE_LOCATION" />
    <uses-permission 安卓:name="安卓.permission.ACCESS_NETWORK_STATE" />

    <uses-feature
        安卓:glEsVersion="0x00020000"
        安卓:required="true"/>

    <application
        安卓:allowBackup="true"
        安卓:icon="@drawable/nyit_icon"
        安卓:label="@string/app_name"
        安卓:theme="@style/AppTheme" >
        <activity
            安卓:name=".ow_main_page"
            安卓:label="@string/app_name" >
        </activity>
        <activity
            安卓:name=".manhattan_main_page"
            安卓:label="@string/title_activity_manhattan_main_page" >
        </activity>
        <activity
            安卓:name=".main_page"
            安卓:label="Travel Application" >
            <intent-filter>
                <action 安卓:name="安卓.intent.action.MAIN" />

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

        <activity
            安卓:name=".ow_campus_points_of_interest"
            安卓:label="@string/title_activity_ow_campus_points_of_interest" >
        </activity>
        <activity
            安卓:name=".manhattan_campus_points_of_interest"
            安卓:label="@string/title_activity_manhattan_campus_points_of_interest" >
        </activity>

        <meta-data
            安卓:name="com.google.安卓.gms.version"
            安卓:value="@integer/google_play_services_version" />

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

    </application>

</manifest>

布局XML文件

<RelativeLayout xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
    xmlns:tools="http://schemas.安卓.com/tools"
    安卓:layout_width="match_parent"
    安卓:layout_height="match_parent"
    安卓:paddingLeft="@dimen/activity_horizontal_margin"
    安卓:paddingRight="@dimen/activity_horizontal_margin"
    安卓:paddingTop="@dimen/activity_vertical_margin"
    安卓:paddingBottom="@dimen/activity_vertical_margin"
    tools:context=".ow_main_page"
    安卓:background="#ffffb502">

    <fragment
        安卓:id="@+id/googleMap"
        安卓:layout_width="match_parent"
        安卓:layout_height="match_parent"
        class="com.google.安卓.gms.maps.SupportMapFragment"
        安卓:layout_above="@+id/latlongLocation" />

    <TextView
        安卓:id="@+id/latlongLocation"
        安卓:layout_width="fill_parent"
        安卓:layout_height="wrap_content"
        安卓:gravity="bottom"
        安卓:layout_alignParentBottom="true"
        安卓:background="#ff058fff"
        安卓:paddingTop="5dp"
        安卓:paddingBottom="5dp"
        安卓:textColor="#ffffffff"
        安卓:paddingLeft="5dp"
        安卓:paddingRight="5dp" />



</RelativeLayout>

有问题的Java类

package com.example.kavin_000.travelapplication;

import 安卓.location.Criteria;
import 安卓.location.Location;
import 安卓.location.LocationListener;
import 安卓.location.LocationManager;
import 安卓.os.Bundle;
import 安卓.support.v4.app.FragmentActivity;
import 安卓.widget.TextView;

import com.google.安卓.gms.common.ConnectionResult;
import com.google.安卓.gms.common.GooglePlayServicesUtil;
import com.google.安卓.gms.maps.CameraUpdateFactory;
import com.google.安卓.gms.maps.GoogleMap;
import com.google.安卓.gms.maps.SupportMapFragment;
import com.google.安卓.gms.maps.model.LatLng;
import com.google.安卓.gms.maps.model.MarkerOptions;

public class ow_campus_points_of_interest extends FragmentActivity implements LocationListener {

    GoogleMap googleMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //show error dialog if GooglePlayServices not available
        if (!isGooglePlayServicesAvailable()) {
            finish();
        }
        setContentView(R.layout.activity_ow_campus_points_of_interest);
        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);
        Location location = locationManager.getLastKnownLocation(bestProvider);
        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();
        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);
    }

    @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;
        }
    }
}

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java谷歌地图不会出现

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