Java 将项目添加到最终列表中

我有一个字符串的最终列表（它必须是最终列表才能在SetonClickListener中使用），当我想向该列表中添加项时，它会抛出一个“UnsopperedOperationException”

这是logcat：

04-06 09:05:35.585: E/AndroidRuntime(1179): FATAL EXCEPTION: main
04-06 09:05:35.585: E/AndroidRuntime(1179): java.lang.UnsupportedOperationException
04-06 09:05:35.585: E/AndroidRuntime(1179):     at java.util.AbstractList.add(AbstractList.java:404)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at java.util.AbstractList.add(AbstractList.java:425)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at com.example.sale.GroupActivity$MyCustomAdapter$1.onClick(GroupActivity.java:385)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at android.view.View.performClick(View.java:4204)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at android.view.View$PerformClick.run(View.java:17355)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at android.os.Handler.handleCallback(Handler.java:725)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at android.os.Handler.dispatchMessage(Handler.java:92)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at android.os.Looper.loop(Looper.java:137)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at android.app.ActivityThread.main(ActivityThread.java:5041)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at java.lang.reflect.Method.invokeNative(Native Method)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at java.lang.reflect.Method.invoke(Method.java:511)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-06 09:05:35.585: E/AndroidRuntime(1179):     at dalvik.system.NativeStart.main(Native Method)
04-06 09:05:38.784: I/Process(1179): Sending signal. PID: 1179 SIG: 9
04-06 09:05:39.694: E/Trace(1425): error opening trace file: No such file or directory (2)

这是我的代码：

          String name="a";

          String freindsAccepted = groupFreindsAcceptedInside.get(position);

            final List<String> accepted = Arrays.asList(freindsAccepted.split(","));
            final String[] arrayAccepted = accepted.toArray(new String[accepted.size()]);

acceptBtn.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View arg0) {
                  Thread thread = new Thread()
                  {
                      @Override
                      public void run() {

                          //perform something
                      }
                  };

                  thread.start();

                  accepted.add(name);
                  String[] arrayAcceptedInside = accepted.toArray(new String[accepted.size()]);

                    if(accepted.size()>1) {
                        groupAccepted.setText("Accepted: "+accepted.get(0)+","+ accepted.get(1)+"...see More");
                    }
                    else {
                        groupAccepted.setText("Accepted: "+accepted.get(0));

                    }
              }
          });

---

多亏了问题不在于它是最终变量，而在于对象是

数组的返回值。asList

：

final List<String> accepted = Arrays.asList(freindsAccepted.split(","));

---

（顺便说一句，不清楚为什么要使用

arrayAccepted

和

arrayAcceptedInside

变量-它们只是用于诊断吗？

这不是因为变量是最终变量，这很好，因为它是数组。asList返回一个固定大小的列表：

您可以将其包装到新的ArrayList中以解决此问题：

    final List<String> accepted = new ArrayList(Arrays.asList(freindsAccepted.split(",")));

final List accepted=new ArrayList（Arrays.asList（freindsAccepted.split（“，”））；

谢谢，那么我如何才能将项目添加到此列表中？没有抛出异常？嗨，Jon，我只有两个数组用于调试，非常感谢，你的回答对我帮助很大：）

final List<String> accepted = new ArrayList<String>(
    Arrays.asList(freindsAccepted.split(","));

    final List<String> accepted = new ArrayList(Arrays.asList(freindsAccepted.split(",")));