android - 通过GPS查找位置时，App Force关闭

Question

嗨，我每次运行我的应用程序时都会强制关闭。它允许启动屏幕出现，但是一旦我单击“查找我的位置”按钮，它就会强制关闭..我发现很奇怪的是当我的GPS关闭时，可以在wi-fi上正常工作。我已经附上了logcat。我是否正确假设此错误在第23行的MyLocOverlay类中？有人可以指出正确的方向吗？
谢谢

public class MyLocOverlay extends Overlay {
    private final int Radius = 5;

    @Override
    public void draw(Canvas canvas, MapView mapView, boolean shadow) {
        Projection projection = mapView.getProjection();
        if (shadow == false) {
            // line below is line 23
            Double lat = location.getLatitude()*1E6;
            Double lng = location.getLongitude()*1E6;
            GeoPoint geoPoint; geoPoint = new GeoPoint(lat.intValue(),lng.intValue());
        }
    }
}

Logcat

04-14 02:41:30.332: INFO/ActivityManager(102): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.irwine.touristapplication/.SplashScreen }

04-14 02:41:30.502: INFO/ActivityManager(102): Start proc com.irwine.touristapplication for activity com.irwine.touristapplication/.SplashScreen: pid=13759 uid=10060 gids={3003}

04-14 02:41:31.012: WARN/Rosie(5927): mAddHtcWidgetByOtherActivity = false, mIsOpenSlideWhenLeaveLaunch = true

04-14 02:41:31.012: WARN/InputManagerService(102): Ignoring hideSoftInput of: com.android.internal.view.IInputMethodClient$Stub$Proxy@44b033b8

04-14 02:41:31.132: WARN/InputManagerService(102): Got RemoteException sending setActive(false) notification to pid 13731 uid 10060

04-14 02:41:31.322: INFO/ActivityManager(102): Displayed activity com.irwine.touristapplication/.SplashScreen: 834 ms (total 33041 ms)

04-14 02:41:36.152: INFO/ActivityManager(102): Starting activity: Intent { cmp=com.irwine.touristapplication/.mainmenu }

04-14 02:41:36.542: INFO/ActivityManager(102): Displayed activity com.irwine.touristapplication/.mainmenu: 337 ms (total 337 ms)

04-14 02:41:40.152: INFO/ActivityManager(102): Starting activity: Intent { cmp=com.irwine.touristapplication/.gps }

04-14 02:41:42.502: INFO/MapActivity(13759): Handling network change notification:CONNECTED

04-14 02:41:42.502: ERROR/MapActivity(13759): Couldn't get connection factory client

04-14 02:41:42.752: WARN/dalvikvm(13759): threadid=1: thread exiting with uncaught exception (group=0x40028a00)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759): FATAL EXCEPTION: main

04-14 02:41:42.782: ERROR/AndroidRuntime(13759): java.lang.NullPointerException

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at com.irwine.touristapplication.MyLocOverlay.draw(MyLocOverlay.java:23)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at com.google.android.maps.Overlay.draw(Overlay.java:179)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at com.google.android.maps.OverlayBundle.draw(OverlayBundle.java:45)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at com.google.android.maps.MapView.onDraw(MapView.java:494)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.View.draw(View.java:6739)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewGroup.drawChild(ViewGroup.java:1648)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewGroup.drawChild(ViewGroup.java:1646)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.View.draw(View.java:6742)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.widget.FrameLayout.draw(FrameLayout.java:352)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewGroup.drawChild(ViewGroup.java:1648)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewGroup.drawChild(ViewGroup.java:1646)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.View.draw(View.java:6742)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.widget.FrameLayout.draw(FrameLayout.java:352)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1872)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewRoot.draw(ViewRoot.java:1422)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewRoot.performTraversals(ViewRoot.java:1167)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1744)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.os.Handler.dispatchMessage(Handler.java:99)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.os.Looper.loop(Looper.java:143)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at android.app.ActivityThread.main(ActivityThread.java:4914)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at java.lang.reflect.Method.invokeNative(Native Method)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at java.lang.reflect.Method.invoke(Method.java:521)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

04-14 02:41:42.782: ERROR/AndroidRuntime(13759):     at dalvik.system.NativeStart.main(Native Method)

04-14 02:41:42.802: WARN/ActivityManager(102):   Force finishing activity com.irwine.touristapplication/.gps

04-14 02:41:42.812: WARN/ActivityManager(102):   Force finishing activity com.irwine.touristapplication/.mainmenu
04-14 
02:41:43.316: WARN/ActivityManager(102): Activity pause timeout for HistoryRecord{44eb0130 com.irwine.touristapplication/.gps}

04-14 02:41:44.742: INFO/Process(13759): Sending signal. PID: 13759 SIG: 9

04-14 02:41:44.752: INFO/WindowManager(102): WIN DEATH: Window{44b42110 com.irwine.touristapplication/com.irwine.touristapplication.mainmenu paused=true}

04-14 02:41:44.762: INFO/ActivityManager(102): Process com.irwine.touristapplication (pid 13759) has died.

04-14 02:41:44.772: INFO/WindowManager(102): WIN DEATH: Window{44b66298 com.irwine.touristapplication/com.irwine.touristapplication.gps paused=false}

04-14 02:41:53.654: WARN/ActivityManager(102): Activity destroy timeout for HistoryRecord{44bd91e8 com.irwine.touristapplication/.mainmenu}

04-14 02:41:53.699: WARN/ActivityManager(102): Activity destroy timeout for HistoryRecord{44eb0130 com.irwine.touristapplication/.gps}

Answer 1

您说您拥有正确的权限。只是为了确保您知道位置有两种不同的权限？

字符串ACCESS_COARSE_LOCATION允许应用访问粗略(例如，Cell-ID，WiFi)位置
字符串ACCESS_FINE_LOCATION允许应用访问精细(例如GPS)位置

Manifest.permission