使用GPS无法获取当前位置 [英] Can't get current location using gps
本文介绍了使用GPS无法获取当前位置的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我又增加了权限来体现，我在模拟器测试然后映射不animateTo的GeoPoint。
我在三星Galaxy迷你然后测试应用程序崩溃：（
code：
公共类atm_atmogan扩展MapActivity {私人的LocationManager myLocationManager;
私人LocationListener的myLocationListener;
私人MapView类myMapView;
私人MapController myMapController;@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.atm_atmogan）;
myMapView =（图形页面）findViewById（R.id.map_view）;
myMapView.setTraffic（真）;
myMapController = myMapView.getController（）; myLocationManager =（的LocationManager）getSystemService（Context.LOCATION_SERVICE）;
myLocationListener =新MyLocationListener（）;
myLocationManager.requestLocationUpdates（LocationManager.GPS_PROVIDER，0,0，myLocationListener）; //获取在启动时的当前位置
双纬度= myLocationManager.getLastKnownLocation（LocationManager.GPS_PROVIDER）.getLatitude（）;
双重很多= myLocationManager.getLastKnownLocation（LocationManager.GPS_PROVIDER）.getLongitude（）;
GeoPoint的initGeoPoint =新的GeoPoint（（INT）（LAT * 1E6），（INT）（很多* 1E6））;
myMapController.animateTo（initGeoPoint）;
myMapController.setZoom（18）;
}私有类MyLocationListener实现LocationListener的{
公共无效onLocationChanged（位置LOC）{
GeoPoint的myGeoPoint =新的GeoPoint（（INT）（loc.getLatitude（）* 1E6），（INT）（loc.getLongitude（）* 1E6））;
myMapController.animateTo（myGeoPoint）;
myMapController.setZoom（18）;
} 公共无效onProviderDisabled（字符串提供商）{
} 公共无效onProviderEnabled（字符串提供商）{
} 公共无效onStatusChanged（字符串提供商，INT地位，捆绑演员）{
}
}@覆盖
保护无效的onPause（）{
super.onPause（）;
myLocationManager.removeUpdates（myLocationListener）;
}@覆盖
保护无效onResume（）{
super.onResume（）;
myLocationManager.requestLocationUpdates（LocationManager.GPS_PROVIDER，0,0，myLocationListener）;
}@覆盖
保护布尔isRouteDisplayed（）{
返回false;
};
}
logcat的：
02-08 14：31：15.481：D / dalvikvm（2292）：GC释放在148ms 727对象/ 60152字节
02-08 14：31：17.012：D / dalvikvm（2292）：GC释放143对象/在68ms 7752个字节
02-08 14：39：10.801：W / KeyCharacterMap（2292）：无键盘ID 0
02-08 14：39：10.801：W / KeyCharacterMap（2292）：使用默认的键盘对应：/system/usr/keychars/qwerty.kcm.bin
02-08 14：39：17.081：E / ActivityThread（2292）：无法找到com.google.settings供应商信息
02-08 14：39：17.091：E / ActivityThread（2292）：无法找到com.google.settings供应商信息
02-08 14：39：17.112：E / ActivityThread（2292）：无法找到com.google.settings供应商信息
02-08 14：39：17.372：D /的LocationManager（2292）：构造：服务= android.location.ILocationManager$Stub$Proxy@44ebe658
02-08 14：39：17.683：I / MapActivity（2292）：处理网络更改通知：已连接
02-08 14：39：17.683：E / MapActivity（2292）：无法获取连接工厂客户端
02-08 14：39：20.012：D / dalvikvm（2292）：GC释放5768对象/在87ms 476800字节
02-08 14：39：20.731：W / KeyCharacterMap（2292）：无键盘ID 0
02-08 14：39：20.731：W / KeyCharacterMap（2292）：使用默认的键盘对应：/system/usr/keychars/qwerty.kcm.bin
02-08 14：39：20.791：D /的LocationManager（2292）：removeUpdates：监听= tim_atm.namespace.atm_atmogan$MyLocationListener@44ec2170
02-08 14：39：21.172：D / dalvikvm（2292）：主题ID = 23唤醒：中断
解决方案
试试这个
公共类MyMapClass扩展MapActivity {
MapController mapController;
MyPositionOverlay positionOverlay;/ **当第一次创建活动调用。 * /
@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.main）;
MapView的myMapView =（图形页面）findViewById（R.id.myMapView）;
myMapView.setSatellite（真）;
myMapView.setBuiltInZoomControls（真）;
mapController = myMapView.getController（）;
mapController.setZoom（17）;
positionOverlay =新MyPositionOverlay（）;
清单＆LT;＆叠加GT;覆盖= myMapView.getOverlays（）;
overlays.add（positionOverlay）; 的LocationManager的LocationManager;
字符串语境= Context.LOCATION_SERVICE;
的LocationManager =（的LocationManager）getSystemService（背景）; 标准标准=新标准（）;
criteria.setAccuracy（Criteria.ACCURACY_FINE）;
criteria.setAltitudeRequired（假）;
criteria.setBearingRequired（假）;
criteria.setCostAllowed（真）;
criteria.setPowerRequirement（Criteria.POWER_LOW）;
字符串提供商= locationManager.getBestProvider（标准，真正的）;
地点= locationManager.getLastKnownLocation（供应商）; 最后LocationListener的LocationListener的=新LocationListener的（）{
公共无效onLocationChanged（地点）{
updateWithNewLocation（位置）;
}
公共无效onProviderDisabled（字符串提供商）{
updateWithNewLocation（NULL）;
}
公共无效onProviderEnabled（字符串提供商）{}
公共无效onStatusChanged（字符串提供商，INT状态，
捆绑演员）{}
}; updateWithNewLocation（位置）;
locationManager.requestLocationUpdates（供应商，2000年，10，
LocationListener的）;
}
私人无效updateWithNewLocation（地点）{
如果（位置！= NULL）{
//更新地图上的位置。
positionOverlay.setLocation（位置）;
双geoLat = location.getLatitude（）* 1E6;
双geoLng = location.getLongitude（）* 1E6;
的GeoPoint点=新的GeoPoint（geoLat.intValue（）
geoLng.intValue（））;
mapController.animateTo（点）; }
}
@覆盖
保护布尔isRouteDisplayed（）{ 返回true;
}
MyPositionOverlay类
公共类MyPositionOverlay扩展覆盖{
地点位置;
私人最终诠释mRadius = 5;
@覆盖
公共无效画（油画画布，MapView类MapView类，布尔阴影）{
投影投影= MapView.getProjection（）在;
如果（阴影== FALSE）{
//获取当前位置
双纬度= location.getLatitude（）* 1E6;
双经度= location.getLongitude（）* 1E6;
GeoPoint对象的GeoPoint;
的GeoPoint =新的GeoPoint（latitude.intValue（），longitude.intValue（））;
//转换为屏幕像素位置
逐点=新点（）;
projection.toPixels（GeoPoint对象，点）;
RectF椭圆形=新RectF（point.x - mRadius，point.y - mRadius，
point.x + mRadius，point.y + mRadius）;
//设置油漆
涂料粉刷=新的油漆（）;
paint.setARGB（250，255，0，0）;
paint.setAntiAlias（真）;
paint.setFakeBoldText（真）;
涂料backPaint =新的油漆（）;
backPaint.setARGB（175，50，50，50）;
backPaint.setAntiAlias（真）;
RectF backRect =新RectF（point.x + 2 + mRadius，
point.y - 3 * mRadius，
point.x + 65，+ point.y mRadius）;
//绘制标志
canvas.drawOval（椭圆形，油漆）;
canvas.drawRoundRect（backRect，5,5，backPaint）;
canvas.drawText（我在这里，point.x + 2 * mRadius，point.y，油漆）;
}
super.draw（画布，MapView类，阴影）;
}
@覆盖
公共布尔中的onTap（GeoPoint的点，MapView类MapView类）{
返回false;
}
公共场所的getLocation（）{
返回的位置;
}
公共无效的setLocation（地点）{
this.location =位置;
}
}
I had added permission to manifest, i'm test on emulator then map not animateTo geopoint. I'm test on samsung galaxy mini then app crash :(.
Code:
public class atm_atmogan extends MapActivity {
private LocationManager myLocationManager;
private LocationListener myLocationListener;
private MapView myMapView;
private MapController myMapController;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.atm_atmogan);
myMapView = (MapView)findViewById(R.id.map_view);
myMapView.setTraffic(true);
myMapController = myMapView.getController();
myLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
myLocationListener = new MyLocationListener();
myLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,myLocationListener);
//Get the current location in start-up
double lat = myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER).getLatitude();
double lot = myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER).getLongitude();
GeoPoint initGeoPoint = new GeoPoint((int)(lat*1E6),(int)(lot*1E6));
myMapController.animateTo(initGeoPoint);
myMapController.setZoom(18);
}
private class MyLocationListener implements LocationListener{
public void onLocationChanged(Location loc) {
GeoPoint myGeoPoint = new GeoPoint((int)(loc.getLatitude()*1E6),(int)(loc.getLongitude()*1E6));
myMapController.animateTo(myGeoPoint);
myMapController.setZoom(18);
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider,int status, Bundle extras){
}
}
@Override
protected void onPause() {
super.onPause();
myLocationManager.removeUpdates(myLocationListener);
}
@Override
protected void onResume() {
super.onResume();
myLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,myLocationListener);
}
@Override
protected boolean isRouteDisplayed() {
return false;
};
}
Logcat:
02-08 14:31:15.481: D/dalvikvm(2292): GC freed 727 objects / 60152 bytes in 148ms
02-08 14:31:17.012: D/dalvikvm(2292): GC freed 143 objects / 7752 bytes in 68ms
02-08 14:39:10.801: W/KeyCharacterMap(2292): No keyboard for id 0
02-08 14:39:10.801: W/KeyCharacterMap(2292): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
02-08 14:39:17.081: E/ActivityThread(2292): Failed to find provider info for com.google.settings
02-08 14:39:17.091: E/ActivityThread(2292): Failed to find provider info for com.google.settings
02-08 14:39:17.112: E/ActivityThread(2292): Failed to find provider info for com.google.settings
02-08 14:39:17.372: D/LocationManager(2292): Constructor: service = android.location.ILocationManager$Stub$Proxy@44ebe658
02-08 14:39:17.683: I/MapActivity(2292): Handling network change notification:CONNECTED
02-08 14:39:17.683: E/MapActivity(2292): Couldn't get connection factory client
02-08 14:39:20.012: D/dalvikvm(2292): GC freed 5768 objects / 476800 bytes in 87ms
02-08 14:39:20.731: W/KeyCharacterMap(2292): No keyboard for id 0
02-08 14:39:20.731: W/KeyCharacterMap(2292): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
02-08 14:39:20.791: D/LocationManager(2292): removeUpdates: listener = tim_atm.namespace.atm_atmogan$MyLocationListener@44ec2170
02-08 14:39:21.172: D/dalvikvm(2292): threadid=23 wakeup: interrupted
解决方案
Try this
public class MyMapClass extends MapActivity {
MapController mapController;
MyPositionOverlay positionOverlay;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MapView myMapView=(MapView)findViewById(R.id.myMapView);
myMapView.setSatellite(true);
myMapView.setBuiltInZoomControls(true);
mapController=myMapView.getController();
mapController.setZoom(17);
positionOverlay = new MyPositionOverlay();
List<Overlay> overlays = myMapView.getOverlays();
overlays.add(positionOverlay);
LocationManager locationManager;
String context=Context.LOCATION_SERVICE;
locationManager=(LocationManager)getSystemService(context);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_LOW);
String provider = locationManager.getBestProvider(criteria, true);
Location location = locationManager.getLastKnownLocation(provider);
final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
updateWithNewLocation(location);
}
public void onProviderDisabled(String provider){
updateWithNewLocation(null);
}
public void onProviderEnabled(String provider){ }
public void onStatusChanged(String provider, int status,
Bundle extras){ }
};
updateWithNewLocation(location);
locationManager.requestLocationUpdates(provider, 2000, 10,
locationListener);
}
private void updateWithNewLocation(Location location) {
if(location!=null) {
// Update the map location.
positionOverlay.setLocation(location);
Double geoLat = location.getLatitude()*1E6;
Double geoLng = location.getLongitude()*1E6;
GeoPoint point = new GeoPoint(geoLat.intValue(),
geoLng.intValue());
mapController.animateTo(point);
}
}
@Override
protected boolean isRouteDisplayed() {
return true;
}
MyPositionOverlay Class
public class MyPositionOverlay extends Overlay {
Location location;
private final int mRadius = 5;
@Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
Projection projection = mapView.getProjection();
if (shadow == false) {
// Get the current location
Double latitude = location.getLatitude()*1E6;
Double longitude = location.getLongitude()*1E6;
GeoPoint geoPoint;
geoPoint = new GeoPoint(latitude.intValue(),longitude.intValue());
// Convert the location to screen pixels
Point point = new Point();
projection.toPixels(geoPoint, point);
RectF oval = new RectF(point.x - mRadius, point.y - mRadius,
point.x + mRadius, point.y + mRadius);
// Setup the paint
Paint paint = new Paint();
paint.setARGB(250, 255, 0, 0);
paint.setAntiAlias(true);
paint.setFakeBoldText(true);
Paint backPaint = new Paint();
backPaint.setARGB(175, 50, 50, 50);
backPaint.setAntiAlias(true);
RectF backRect = new RectF(point.x + 2 + mRadius,
point.y - 3*mRadius,
point.x + 65, point.y + mRadius);
// Draw the marker
canvas.drawOval(oval, paint);
canvas.drawRoundRect(backRect, 5, 5, backPaint);
canvas.drawText("Here I Am", point.x + 2*mRadius, point.y, paint);
}
super.draw(canvas, mapView, shadow);
}
@Override
public boolean onTap(GeoPoint point, MapView mapView) {
return false;
}
public Location getLocation() {
return location;
}
public void setLocation(Location location) {
this.location = location;
}
}
这篇关于使用GPS无法获取当前位置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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