包装整数ArrayList Android

Question

我有一个自定义类我想传递给另一个活动，我读过一个很好的方式来做到这一点是通过使用Parcelable接口。

public class MatchData implements Parcelable{ 

    private long mId; 
    private int kills, assists, deaths, creeps, ssp1, ssp2, playerRole; 
    private String type; 
    private String champion; 
    private ArrayList<Integer> items; 
    private boolean won; 

    MatchData(long m, int k, int d, int a, String id, int cr, int s1, int s2, int pr, String t, ArrayList<Integer> it, boolean w) { 
     mId = m; 
     kills = k; 
     assists = a; 
     deaths = d; 
     champion = id; 
     creeps = cr; 
     ssp1 = s1; 
     ssp2 = s2; 
     playerRole = pr; 
     type = t; 
     items = it; 
     won = w; 
    } 

    MatchData(Parcel in) { 
     mId = in.readInt(); 
     kills = in.readInt(); 
     deaths = in.readInt(); 
     assists = in.readInt(); 
     champion = in.readString(); 
     creeps = in.readInt(); 
     ssp1 = in.readInt(); 
     ssp2 = in.readInt(); 
     playerRole = in.readInt(); 
     type = in.readString(); 
     items = new ArrayList<>(); 
     in.readList(items, null); // right here 
     won = Boolean.valueOf(in.readString()); 
    } 

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

    @Override 
    public void writeToParcel(Parcel out, int flags) { 
     out.writeLong(this.getmId()); 
     out.writeInt(this.getKills()); 
     out.writeInt(this.getDeaths()); 
     out.writeInt(this.getAssists()); 
     out.writeString(this.getChampion()); 
     out.writeInt(this.getCreeps()); 
     out.writeInt(this.getSsp1()); 
     out.writeInt(this.getSsp2()); 
     out.writeInt(this.getPlayerRole()); 
     out.writeString(this.getType()); 
     out.writeList(this.getItems()); 
     out.writeString(String.valueOf(this.isWon())); 
    } 

    public static final Parcelable.Creator<MatchData> CREATOR = new Parcelable.Creator<MatchData>() { 
     public MatchData createFromParcel(Parcel in) { 
      return new MatchData(in); 
     } 

     public MatchData[] newArray(int size) { 
      return new MatchData[size]; 
     } 
    }; 

} 

我没有复制getters和setters，但他们在那里。当我尝试从包裹中读取整数列表时，我面临的问题就出现了（我评论了该行）。

编辑：我在这一行空替换Integer.class.getClassLoader（），这是新的堆栈跟踪

06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime: FATAL EXCEPTION: main 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime: Process: com.nicu.bogdan.lolstats, PID: 2429 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.nicu.bogdan.lolstats/com.nicu.bogdan.playerInfo.MatchActivity}: java.lang.RuntimeException: Parcel android.os.Parcel@24a39bfa: Unmarshalling unknown type code 4915278 at offset 168 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread.access$800(ActivityThread.java:151) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Handler.dispatchMessage(Handler.java:102) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Looper.loop(Looper.java:135) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread.main(ActivityThread.java:5254) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Native Method) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Method.java:372) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime: Caused by: java.lang.RuntimeException: Parcel android.os.Parcel@24a39bfa: Unmarshalling unknown type code 4915278 at offset 168 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Parcel.readValue(Parcel.java:2228) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Parcel.readListInternal(Parcel.java:2526) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Parcel.readList(Parcel.java:1661) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at com.nicu.bogdan.jsonParser.MatchData.<init>(MatchData.java:140) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at com.nicu.bogdan.jsonParser.MatchData$1.createFromParcel(MatchData.java:167) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at com.nicu.bogdan.jsonParser.MatchData$1.createFromParcel(MatchData.java:165) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Parcel.readParcelable(Parcel.java:2252) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Parcel.readValue(Parcel.java:2152) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Parcel.readArrayMapInternal(Parcel.java:2485) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.BaseBundle.unparcel(BaseBundle.java:221) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Bundle.getParcelable(Bundle.java:755) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.content.Intent.getParcelableExtra(Intent.java:5088) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at com.nicu.bogdan.playerInfo.MatchActivity.onCreate(MatchActivity.java:43) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.Activity.performCreate(Activity.java:5990) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278) 
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread.access$800(ActivityThread.java:151)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Handler.dispatchMessage(Handler.java:102)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.os.Looper.loop(Looper.java:135)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at android.app.ActivityThread.main(ActivityThread.java:5254)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Native Method)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Method.java:372)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)  
06-23 13:26:35.479 2429-2429/com.nicu.bogdan.lolstats E/AndroidRuntime:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)  

Answer 1

Integer是不是默认parcelable。试试这个：

in.readList(ids, Integer.class.getClassLoader());