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我的申请有问题。我认为我有一个类可以正确放置值并且可以正常工作，但是当我尝试获取捆绑包中的类的值时，出现此错误：

04-16 02:59:12.900: E/AndroidRuntime(1443): FATAL EXCEPTION: main
04-16 02:59:12.900: E/AndroidRuntime(1443): Process: com.example.en4dis, PID: 1443
04-16 02:59:12.900: E/AndroidRuntime(1443): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.en4dis/com.example.en4dis.activitySelectEnvironment}: java.lang.ClassCastException: java.lang.Object[] cannot be cast to com.example.en4dis.Point[]
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2176)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2226)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.app.ActivityThread.access$700(ActivityThread.java:135)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1397)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.os.Handler.dispatchMessage(Handler.java:102)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.os.Looper.loop(Looper.java:137)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.app.ActivityThread.main(ActivityThread.java:4998)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at java.lang.reflect.Method.invokeNative(Native Method)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at java.lang.reflect.Method.invoke(Method.java:515)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at dalvik.system.NativeStart.main(Native Method)
04-16 02:59:12.900: E/AndroidRuntime(1443): Caused by: java.lang.ClassCastException: java.lang.Object[] cannot be cast to com.example.en4dis.Point[]
04-16 02:59:12.900: E/AndroidRuntime(1443):     at com.example.en4dis.activitySelectEnvironment.onCreate(activitySelectEnvironment.java:108)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.app.Activity.performCreate(Activity.java:5243)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
04-16 02:59:12.900: E/AndroidRuntime(1443):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2140)
04-16 02:59:12.900: E/AndroidRuntime(1443):     ... 11 more

这个错误出现在这一行：

points = (Point[]) myBundle.get("puntos");

我使用这段代码来声明我的 Point 数组：

Point points[];

我使用这个其他代码将它放在我的包中：

myIntent.putExtra("puntos", points);

我将我的 Point 类代码用于更多说明：

package com.example.en4dis;

public class Point implements java.io.Serializable {

/**
 * 
 */
private static final long serialVersionUID = -4910520794768384111L;


String _id; 
String _comment; 
String _calification; 
String _coords;
int _X;
int _Y;

public Point(String id, String comment, String calification, String coords, int x, int y)
{
    _id = id; 
    _comment = comment; 
    _calification = calification; 
    _coords = coords;
    _X = x;
    _Y = y;     
}

public String getID()
{
    return _id;
}

public String getComment()
{
    return _comment;
}

public String getCalification()
{
    return _calification;
}

public String getCoords()
{
    return _coords;
}

public int getPointX()
{
    return _X;
}

public int getPointY()
{
    return _Y;
}

}

Eclipse抛出了一个异常，我必须把“private static final long serialVersionUID = -4910520794768384111L;” 线来修复它，我不知道这条线是问题还是什么。有人能帮我吗？谢谢！

4

2 回答 2

1

Just try,

replace 

points = (Point[]) myBundle.get("puntos");

with

Object[] objects = myBundle.get("puntos");
points = Arrays.copyOf(objects ,objects.length, Point[].class);

Let me know what happen.

于 2014-04-16T10:12:10.540 回答
0

You need the putSerializable method of the Bundle. Check this http://developer.android.com/reference/android/os/Bundle.html#putSerializable(java.lang.String, java.io.Serializable)

于 2014-04-16T10:01:22.567 回答