Android 抓住lat和lng
因此,我找到了这个脚本以获得最佳位置,并将其添加到应用程序中。当我调用位置时,它只是在包名后给出一个随机数(com.android.package.currentactivity)$1@randomcode) 还有MyLocation.javaAndroid 抓住lat和lng,android,Android,因此,我找到了这个脚本以获得最佳位置,并将其添加到应用程序中。当我调用位置时,它只是在包名后给出一个随机数(com.android.package.currentactivity)$1@randomcode) 还有MyLocation.java import java.util.Timer; import java.util.TimerTask; import android.content.Context; import android.location.Location; import an
import java.util.Timer;
import java.util.TimerTask;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
public class MyLocation {
Timer timer1;
LocationManager lm;
LocationResult locationResult;
boolean gps_enabled=false;
boolean network_enabled=false;
public boolean getLocation(Context context, LocationResult result)
{
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult=result;
if(lm==null)
lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted.
try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
//don't start listeners if no provider is enabled
if(!gps_enabled && !network_enabled)
return false;
if(gps_enabled)
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if(network_enabled)
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer1=new Timer();
timer1.schedule(new GetLastLocation(), 20000);
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
class GetLastLocation extends TimerTask {
@Override
public void run() {
lm.removeUpdates(locationListenerGps);
lm.removeUpdates(locationListenerNetwork);
Location net_loc=null, gps_loc=null;
if(gps_enabled)
gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(network_enabled)
net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//if there are both values use the latest one
if(gps_loc!=null && net_loc!=null){
if(gps_loc.getTime()>net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if(gps_loc!=null){
locationResult.gotLocation(gps_loc);
return;
}
if(net_loc!=null){
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
}
我想得到的是lat和lng,以便我可以在我的活动中使用。您需要将其中一个或两个添加到manifest.xml中:
<uses-permission
android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission
android:name="android.permission.ACCESS_FINE_LOCATION" />
显然,您需要删除
appModel
内容和自定义对话框内容。您需要更明确地说明从何处获取该字符串,这样我们可以帮助您确定问题所在,但该字符串将活动实例表示为字符串
公共字符串toString()
自:API级别1
返回一个字符串,其中包含此对象的简明易读描述。鼓励子类重写此方法,并提供考虑对象类型和数据的实现。默认实现相当于以下表达式:
getClass().getName() + '@' + Integer.toHexString(hashCode())
如果您打算实现自己的toString方法,请参阅编写一个有用的toString方法。
返回此对象的可打印表示形式
编辑:这不是您的活动,而是其中的一个内部类(这由$1部分说明)。可能是MyLocation实例?这不是android处理安全异常的方式:尚未完成。我没有提到例外情况。我想你弄错了。我没有“弄错”。如果你想第一个回答,不管答案的质量如何,你都会被拒绝投票。所以你可以看到MyLocation.java,我正在调用一个json数组从MySQL数据库获取一些远程信息。在URL中,它会发布lat和long,服务器会获取这些信息,并返回结果。目前我有一个Toast弹出窗口,如下所示
Toast.makeText(getApplicationContext(),“+locationResult+”,Toast.LENGTH\u LONG).show()代码>希望我能得到的是显示lat和long。我还尝试了更改以下内容,但没有成功private void findCurrentLocation(){myLocation.getLocation(this,locationResult);}public locationResult locationResult=new locationResult(){public void gotLocation(Location-Location-Location){//TODO自动生成的方法存根如果(location!=null){String strloc=location.getLatitude()+“,“+location.getLatitude();}}
请解释为什么你否决了我的答案。我在哪里提到了任何类型的异常?这就是问题所在。没有LocationResult 35; toString()
方法覆盖默认的对象#toString()
。你需要在LocationResult上定义一个toString()方法。@Casp你没有。但是你试图解释“奇数”因此,我在对您的答案的评论中解释说,缺乏权限的处理方式有所不同。就是这样。我不知道您在这之后还添加了什么,但它似乎也没有解决具体问题。
/**************************************************************************
* helper functions for starting/stopping monitoring of Location changes below
**************************************************************************/
public void startListening() {
if (networkLocationListener == null && gpsLocationListener == null) {
// make new listeners
networkLocationListener = new BegetLocationListener(LocationManager.NETWORK_PROVIDER);
gpsLocationListener = new BegetLocationListener(LocationManager.GPS_PROVIDER);
// request very rapid updates initially. after first update, we'll put them back down to a much lower frequency
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 60000, 200, networkLocationListener);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 200, gpsLocationListener);
}
Location networkLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (networkLocation != null) {
appModel.setLocation(networkLocation);
}
updateDistances(appModel.getLocation());
}
private void stopListening() {
if (networkLocationListener != null)
locationManager.removeUpdates(networkLocationListener);
if (gpsLocationListener != null)
locationManager.removeUpdates(gpsLocationListener);
gpsLocationListener = null;
networkLocationListener = null;
}
private void handleListenerDisabled(BegetLocationListener listener) {
if (!appModel.getFlags().hasLocationMessageBeenDisplayed()) {
if (networkLocationListener.locationStatusKnown && gpsLocationListener.locationStatusKnown) {
if (networkLocationListener.locationIsEnabled && !gpsLocationListener.locationIsEnabled) {
showAlert(YES_NETWORK_NO_GPS_MSG, BaseActivity.DIALOG_LOCATION);
appModel.getFlags().setLocationMessageDisplayed(true);
} else {
showAlert(NO_NETWORK_NO_GPS_MSG, BaseActivity.DIALOG_LOCATION);
appModel.getFlags().setLocationMessageDisplayed(true);
}
}
}
}
private void handleLocationChanged(Location location) {
if (location == null) {
return;
}
if (isBetterLocation(location, appModel.getLocation())) {
appModel.setLocation(location);
stopListening();
}
}
private class BegetLocationListener implements LocationListener {
private String provider = "";
private boolean locationIsEnabled = true;
private boolean locationStatusKnown = true;
public BegetLocationListener(String provider) {
this.provider = provider;
}
@Override
public void onLocationChanged(Location location) {
// Called when a new location is found by the network location provider.
handleLocationChanged(location);
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
public void onProviderEnabled(String provider) {
startListening();
}
public void onProviderDisabled(String provider) {
locationStatusKnown = true;
locationIsEnabled = false;
handleListenerDisabled(this);
}
}
getClass().getName() + '@' + Integer.toHexString(hashCode())