【发布时间】:2013-09-25 07:49:03
【问题描述】:
我有问题,
当我在模拟器中测试它并在 DDMS 屏幕中编辑位置时,位置管理器工作得非常好,但是当我在 Samsung Galaxy SII 上测试它时,它的 nog 工作正常..
请帮帮我。
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class LbsGeocodingActivity extends Activity {
private static final long MINIMUM_DISTANCE_CHANGE_FOR_UPDATES = 0; // in Meters
private static final long MINIMUM_TIME_BETWEEN_UPDATES = 1000; // in Milliseconds
protected LocationManager locationManager;
protected Button retrieveLocationButton;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
retrieveLocationButton = (Button) findViewById(R.id.retrieve_location_button);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MINIMUM_TIME_BETWEEN_UPDATES, MINIMUM_DISTANCE_CHANGE_FOR_UPDATES, new MyLocationListener());
retrieveLocationButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
showCurrentLocation();
}
});
}
public String getMyPhoneNumber(){
TelephonyManager mTelephonyMgr;
mTelephonyMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
return mTelephonyMgr.getLine1Number();
}
protected void showCurrentLocation() {
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
String message = String.format("Current Location \n Longitude: %1$s \n Latitude: %2$s \n %3$s ", location.getLongitude(), location.getLatitude(), getMyPhoneNumber());
Toast.makeText(LbsGeocodingActivity.this, message, Toast.LENGTH_LONG).show();
}
}
private class MyLocationListener implements LocationListener {
public void onLocationChanged(Location location) {
String message = String.format(
"New Location \n Longitude: %1$s \n Latitude: %2$s \n %3$s ",
location.getLongitude(), location.getLatitude(), getMyPhoneNumber()
);
Toast.makeText(LbsGeocodingActivity.this, message, Toast.LENGTH_LONG).show();
}
public void onStatusChanged(String s, int i, Bundle b) {
Toast.makeText(LbsGeocodingActivity.this, "Provider status changed",
Toast.LENGTH_LONG).show();
}
public void onProviderDisabled(String s) {
Toast.makeText(LbsGeocodingActivity.this,
"Provider disabled by the user. GPS turned off",
Toast.LENGTH_LONG).show();
}
public void onProviderEnabled(String s) {
Toast.makeText(LbsGeocodingActivity.this,
"Provider enabled by the user. GPS turned on",
Toast.LENGTH_LONG).show();
}
}
}
在我拥有的权限中:
ACCES_COURSE_LOCATION
ACCES_FINE_LOCATION
【问题讨论】:
-
“不工作”是什么意思?你有错误吗?高度总是
0?你在海边工作吗? -
不,它只是不调用该函数。当我关闭 GPS 时,它会吐司。但它永远不会让 LocationManager 敬酒..
-
“不调用函数”,什么函数??更具体。
-
好吧,如果我在手机上测试它,我得到的唯一 Toast 就是我打开和关闭 GPS 时。即使我引用了 location.getLongitude()、location.getLatitude()、getMyPhoneNumber(),它在移动设备上也不起作用。但是当我在模拟器上测试它时,它工作得很好。抱歉,我在 Android 编程方面不是那么好。我希望这就足够了
-
locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);这会返回null?