使用 Parcelable 将对象从一个 android 活动传递到另一个
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Use Parcelable to pass an object from one android activity to another
提问by Namratha
I want to do this
我想做这个
class A extends Activity{
private class myClass{
}
myClass obj = new myClass();
intent i = new Intent();
Bundle b = new Bundle();
b.putParcelable(Constants.Settings, obj); //I get the error The method putParcelable(String, Parcelable) in the type Bundle is not applicable for the arguments (int, A.myClass)
i.setClass(getApplicationContext(),B.class);
startActivity(i);
}
How do I use Parcelable to pass obj to activity B?
如何使用 Parcelable 将 obj 传递给活动 B？
采纳答案by Jon Skeet
As the error suggests, you need to make your class (myClassin this case) implement Parcelable. If you look at the documentation for Bundle, all the putParcelablemethods take either a Parcelableor a collection of them in some form. (This makes sense, given the name.) So if you want to use that method, you need to have a Parcelableinstance to put in the bundle...
正如错误所暗示的那样，您需要让您的类（myClass在本例中）实现Parcelable. 如果您查看 的文档Bundle，则所有putParcelable方法Parcelable都以某种形式采用它们的一个或集合。（鉴于名称，这是有道理的。）因此，如果您想使用该方法，则需要将一个Parcelable实例放入包中...
Of course you don't haveto use putParcelable- you could implement Serializableinstead and call putSerializable.
当然，你不具备使用putParcelable-你可以实现Serializable，而不是和呼叫putSerializable。
回答by Paresh Mayani
Create your class and implements Serializable:
创建您的类并实现Serializable：
private class myClass implements Serializable {
}
And do like:
并且喜欢：
myClass obj = new myClass();
Intent aActivity = (A.this, B.class);
intent.putExtra("object", obj);
On Receiving side:
在接收端：
myClass myClassObject = getIntent().getSerializableExtra("object");
回答by Jimit Patel
Parcelable is pain in writing code but more cost effective than Serializable. Have a look at the given below link -
Parcelable 在编写代码时很痛苦，但比 Serializable 更具成本效益。看看下面给出的链接 -
