Android上的GPS程序报错:Fail to find provider info for com.google.android.gsf.gservices

  

  Android上的GPS程序,真机测试。

  

  就是不显示数据,Eclipse中报错:Fail to find provider info for com.google.android.gsf.gservices

  我开始的时候猜想,可能是因为在室内,所以得不到GPS的数据,可是在室外试了一次也没得到任何数据,难道是天气问题?

  注:此程序在AVD中运行的时候用DDMS发送数据可以正常显示。

 

解答:

  在晴朗的天气户外,终于得到了数据。

  另:真机测试时发现有的手机可以,有的手机不可以得到数据,所以可能跟具体的硬件也有关系。

  最后注明:GPS一定要开放,即通知区域应该显示GPS的那个小圆圈转啊转的。

 

  附上代码:

  

package com.example.hellogps;

import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;

public class HelloGPSActivity extends Activity
{

    public static final String LOG_TAG = "HelloGPS";

    LocationManager locationManager = null;
    String provider = null;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        Log.v(LOG_TAG, "onCreate");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_hello_gps);

        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

        provider = LocationManager.GPS_PROVIDER;

        Location location = locationManager.getLastKnownLocation(provider);

        updateWithNewLocation(location);

    }

    @Override
    protected void onResume()
    {
        Log.v(LOG_TAG, "onResume");
        super.onResume();

        locationManager.requestLocationUpdates(provider, 0, 0,
                mLocationListener);
    }

    @Override
    protected void onPause()
    {
        Log.v(LOG_TAG, "onPause");
        super.onPause();

        locationManager.removeUpdates(mLocationListener);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        Log.v(LOG_TAG, "onCreateOptionsMenu");
        getMenuInflater().inflate(R.menu.activity_hello_gps, menu);
        return true;
    }

    /**
     * 新位置更新
     * 
     * @param location
     */
    private void updateWithNewLocation(Location location)
    {
        Log.v(LOG_TAG, "updateWithNewLocation");
        TextView myLocationText = (TextView) findViewById(R.id.myLocationText);

        String latLongString = "No Location Found";

        if (location != null)
        {
            double lat = location.getLatitude();
            double lng = location.getLongitude();

            latLongString = "Lat: " + lat + "\nLong: " + lng;

        }

        // 显示
        myLocationText.setText("Your current Location is:\n" + latLongString);

    }

    LocationListener mLocationListener = new LocationListener()
    {

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras)
        {
            Log.v(LOG_TAG, "onStatusChanged");

        }

        @Override
        public void onProviderEnabled(String provider)
        {
            Log.v(LOG_TAG, "onProviderEnabled");

        }

        @Override
        public void onProviderDisabled(String provider)
        {
            Log.v(LOG_TAG, "onProviderDisabled");

        }

        @Override
        public void onLocationChanged(Location location)
        {
            Log.v(LOG_TAG, "onLocationChanged ++" + location.toString());

            updateWithNewLocation(location);

        }
    };

}

 

Manifest文件:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.hellogps"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".HelloGPSActivity"
            android:label="@string/title_activity_hello_gps" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

 

布局文件:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/myLocationText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</LinearLayout>

 

 

 

 

 

posted @ 2013-03-19 21:32  圣骑士wind  阅读(13973)  评论(0编辑  收藏  举报