Java AndroidRuntime 错误：包裹：无法编组值
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AndroidRuntime error: Parcel: unable to marshal value
提问by Jared
I am trying to pass a HashMap to a new activity using the intent.puExtra function. Stepping through the debugger it seems that it adds the HashMap no problem, however when startActivty() is called I get a runtime error stating that Parcel: unable to marshal value com.appName.Liquor.
我正在尝试使用 intent.puExtra 函数将 HashMap 传递给新活动。通过调试器，它似乎添加了 HashMap 没有问题，但是当 startActivty() 被调用时，我收到一个运行时错误，指出 Parcel：无法编组值 com.appName.Liquor。
Liquor is a custom class that I created, and I believe it, in combination with a HashMap, is causing the problem. If I pass a string rather than my HashMap it loads the next activity no problem.
Liquor 是我创建的自定义类，我相信它与 HashMap 结合会导致问题。如果我传递一个字符串而不是我的 HashMap，它会加载下一个活动没问题。
Main Activity
主要活动
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String cat = ((TextView) view).getText().toString();
Intent i = new Intent(OhioLiquor.this, Category.class);
i.putExtra("com.appName.cat", _liquorBase.GetMap());
startActivity(i);
Liquor Class
酒类
public class Liquor
{
public String name;
public int code;
public String category;
private HashMap<String, Bottle> _bottles;
public Liquor()
{
_bottles = new HashMap<String, Bottle>();
}
public void AddBottle(Bottle aBottle)
{
_bottles.put(aBottle.size, aBottle);
}
}
Sub Activity
子活动
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
HashMap<Integer, Liquor> map = (HashMap<Integer, Liquor>)getIntent().getSerializableExtra("com.appName.cat");
setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, GetNames(map)));
ListView lv = getListView();
lv.setTextFilterEnabled(true);
When the runtime error exists it never makes it into the sub activity class. So I'm pretty sure the problem exists in the adding of the HashMap to the intent, and based off the error I believe my Liquor class is the cause, but I can't figure out why.
当运行时错误存在时，它永远不会进入子活动类。所以我很确定问题存在于将 HashMap 添加到意图中，并且基于错误，我相信我的 Liquor 类是原因，但我不知道为什么。
Your help will be much appreciated. Thanks!
您的帮助将不胜感激。谢谢！
采纳答案by naikus
Your HashMapitself is serializable but is the Bottleclass serializable? If not, it will not serialize and will throw errors at runtime.
Make the Bottleclass implement the java.io.Serializableinterface
你HashMap本身是可序列化的，但Bottle类是可序列化的吗？如果不是，它不会序列化并在运行时抛出错误。使Bottle类实现java.io.Serializable接口
