GPS定位 菜鸟级别的

最近在搞点击按钮实现ＧＰＳ定位的　新手能够看一下　避免一些弯路

imgbtn4 = (ImageView)findViewById(R.id.cd4);
    
    imgbtn4.setOnClickListener(new Button.OnClickListener() {
    	
    	//注册一个LoacationManager
    	LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        public void onClick(View arg0) {
			// TODO Auto-generated method stub
        	//注册一个周期性的位置更新
        	Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        	WithNewLocation(location);
        	
        	locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,   
        			 1000, 0, locationListener);
		}
    });

将定位单独设置成一个函数写OnCreat 的外边

public void WithNewLocation(Location location)
{
	if(location==null)
	{
		return ;
	}
	 //取得经度和纬度  
    Double geoLat=location.getLatitude()*1E6;//这儿 将Double换成double会报错  
    Double geoLng=location.getLongitude()*1E6;  
    //将其转换为int型  
    GeoPoint point=new GeoPoint(geoLat.intValue(),geoLng.intValue());  
    mMapController.animateTo(point);  
}

监听器的实现

private final LocationListener locationListener = new LocationListener() {
	// //当坐标改变时触发此函数，若是Provider传进相同的坐标，它就不会被触发
    public void onLocationChanged(Location location) {   
        // log it when the location changes   
        if (location != null) {   
            Log.i("SuperMap", "Location changed : Lat: "  
              + location.getLatitude() + " Lng: "  
              + location.getLongitude());   
        }   
    }   
  
    public void onProviderDisabled(String provider) {   
    // Provider被disable时触发此函数，好比GPS被关闭   
    }   
  
    public void onProviderEnabled(String provider) {   
    //  Provider被enable时触发此函数，好比GPS被打开   
    }   
  
    public void onStatusChanged(String provider, int status, Bundle extras) {   
    // Provider的转态在可用、暂时不可用和无服务三个状态直接切换时触发此函数   
    }   
};