Parcelable遇到IOException異常寫序列化對象

所以基本上我通過本教程 http://mindtherobot.com/blog/37/android-architecture-tutorial-developing-an-app-with-a-background-service-using-ipc/Parcelable遇到IOException異常寫序列化對象

就因爲它是多了還是少了什麼我想要實現。我希望我的GPS服務在後臺運行，不斷地收集GPS座標並將其保存到數組中，這樣用戶就可以交換到另一個活動並返回到Map活動，並讓它仍然繪製最多的整個記錄路徑。

所以我實現了本教程來設置IPC，它似乎工作或多或少，但我有一個問題獲取數據回到我的活動。這裏是我的文件，首先是我的Parcelable對象，它是一個將保存GPSObject的列表。接下來是我的GPSObject，它只是一個可序列化的對象，其中包含來自Android位置對象的一些信息。

package com.android.SnowFever; 

import java.util.ArrayList; 
import java.util.List; 

import com.android.SnowFever.*; 
import com.google.android.maps.GeoPoint; 

import android.os.Parcel; 
import android.os.Parcelable; 

public final class GPSResult implements Parcelable { 

public static final Creator<GPSResult> CREATOR = new Creator<GPSResult>() { 
    @Override 
    public GPSResult[] newArray(int size) { 
     return new GPSResult[size]; 
    } 

    @Override 
    public GPSResult createFromParcel(Parcel source) { 
     return new GPSResult(source); 
    } 
}; 

private List<GPSObject> geoPoints; 

public GPSResult() { 
    geoPoints = new ArrayList<GPSObject>(); 
} 

@SuppressWarnings("unchecked") 
private GPSResult(Parcel source) { 
    geoPoints = source.readArrayList(GPSService.class.getClassLoader()); 
} 

public void addGPS(GPSObject location) { 
    geoPoints.add(location); 
} 

public List<GPSObject> getGeoPoints() { 
    return geoPoints; 
} 

@Override 
public int describeContents() { 
    return 0; 
} 

@Override 
public void writeToParcel(Parcel dest, int flags) { 
    dest.writeList(geoPoints); 
} 

}

這是我GPSObject類

package com.android.SnowFever; 

import java.io.Serializable; 

import com.google.android.maps.GeoPoint; 

import android.location.Location; 

public class GPSObject implements Serializable{ 

/** 
* 
*/ 
private static final long serialVersionUID = 1L; 

float spd, acc; 
double lat, lng, alt; 
GeoPoint gp; 

public GPSObject(Location l) { 
    lat = l.getLatitude() * 1E6; 
    lng = l.getLongitude() * 1E6; 
    alt = l.getAltitude(); 
    spd = l.getSpeed(); 
    acc = l.getAccuracy(); 
    gp = new GeoPoint((int)lat,(int)lng); 
} 

}

將文件添加到我的GPSResult名單我打電話

latestGPSResult.getGeoPoints().add(new GPSObject(location));

，我得到線程主題中包含錯誤，較大塊下面的錯誤窗口

11-01 18:49:06.818: E/JavaBinder(20754): *** Uncaught remote exception! (Exceptions are not yet supported across processes.) 
11-01 18:49:06.818: E/JavaBinder(20754): java.lang.RuntimeException: Parcelable encountered IOException writing serializable object (name = com.android.SnowFever.GPSObject) 
11-01 18:49:06.818: E/JavaBinder(20754): at android.os.Parcel.writeSerializable(Parcel.java:1176) 
11-01 18:49:06.818: E/JavaBinder(20754): at android.os.Parcel.writeValue(Parcel.java:1130) 
11-01 18:49:06.818: E/JavaBinder(20754): at android.os.Parcel.writeList(Parcel.java:519) 
11-01 18:49:06.818: E/JavaBinder(20754): at com.android.SnowFever.GPSResult.writeToParcel(GPSResult.java:52) 
11-01 18:49:06.818: E/JavaBinder(20754): at com.android.SnowFever.GPSApi$Stub.onTransact(GPSApi.java:52) 
11-01 18:49:06.818: E/JavaBinder(20754): at android.os.Binder.execTransact(Binder.java:320) 
11-01 18:49:06.818: E/JavaBinder(20754): at android.os.BinderProxy.transact(Native Method) 
11-01 18:49:06.818: E/JavaBinder(20754): at com.android.SnowFever.GPSListener$Stub$Proxy.handleGPSUpdated(GPSListener.java:76) 
11-01 18:49:06.818: E/JavaBinder(20754): at com.android.SnowFever.GPSService$GeoUpdateHandler.onLocationChanged(GPSService.java:91)

來源

2011-11-02 user1024792