獲取GPS pos和解析XML時出錯

Question

任何人都可以解釋導致此錯誤的原因：

我正在使用DOM解析XML。

12-12 08:56:52.053: ERROR/AndroidRuntime(289): java.lang.NullPointerException 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at gps.app.tkartor.Tkartor.onLocationChanged(Tkartor.java:205) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:191) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at android.location.LocationManager$ListenerTransport.access$000(LocationManager.java:124) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at android.location.LocationManager$ListenerTransport$1.handleMessage(LocationManager.java:140) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at android.os.Handler.dispatchMessage(Handler.java:99) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at android.os.Looper.loop(Looper.java:123) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at android.app.ActivityThread.main(ActivityThread.java:4627) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at java.lang.reflect.Method.invokeNative(Native Method) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at java.lang.reflect.Method.invoke(Method.java:521) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 12-12 08:56:52.053: ERROR/AndroidRuntime(289): at dalvik.system.NativeStart.main(Native Method)

Answer 1

我想你應該檢查在onLocationChanged收到的位置的空字段。當沒有GPS覆蓋時，會收到虛擬位置對象。