在意图之间传递ArrayList会丢失数据 [英] Passing ArrayList between intents loses data

问题描述

我正在将ArrayList<Custom implements Parcelable> myList传递给Intent. 将ArrayList放入新的Intent中，以下两种方法似乎都可以正常工作.

I am passing ArrayList<Custom implements Parcelable> myList to an Intent. Both of the following ways seem to work fine with putting the ArrayList into the new Intent.

        results.putParcelableArrayListExtra("list", myList);
        results.putExtra("list", myList);

当我检查mIntent/mExtras/mMap/table时，那里的所有内容.但是在意图的onCreate方法中，某些数据似乎丢失了.我现在用myList = (ArrayList<Custom>) this.getIntent().getParcelableArrayListExtra("list");

When I check mIntent/mExtras/mMap/table it is everything there. But in the onCreate method of the intent some of that data seems to be lost. I am getting the ArrayList then with myList = (ArrayList<Custom>) this.getIntent().getParcelableArrayListExtra("list");

例如，列表包含五个项目[a]，[b]，[c]，[d]和[e]:

For example the list contains five items[a], [b], [c], [d] and [e]:

put...   get...
[a]  ->  [a]
[b]  ->  null
[c]  ->  [b]
[d]  ->  null
[e]  ->  [c]

似乎新列表中的第二个项目都不是预期的，并且占据了最后缺少的一个位置. 你能告诉我我做错了什么吗?

It seems that every second item in the new list is not intended and takes up one place that is missing at the end. Can you tell me what I am doing wrong?

推荐答案

尝试这个为我的朋友:

intent.putParcelableArrayListExtra("tag",yourObjectImplementsParceable);

xxx = (ArrayList<yourClassImplementsParceable>) intent.getParcelableArrayListExtra("tag");

希望这会有所帮助

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