Android的，我可以使用putExtra传递多个值 [英] Android, Can I use putExtra to pass multiple values

问题描述

我想通过两个值到另一个活动，我可以做到这一点与putExtra或做我必须做一个更复杂的方式，这似乎从我的阅读。例如..可以像这样的工作？

I want to pass two values to another activity can I do this with putExtra or do I have to do it a more complicated way, which it seems from my reading. E.g.. can something like this work?

public final static String ID_EXTRA="com.fnesse.beachguide._ID";

Intent i = new Intent(this, CoastList.class);
i.putExtra(ID_EXTRA, "1", "111");
startActivity(i);

上面给出了一个错误。

The above gives an error.

修改

我想的第一件事是相似的：

The first thing I tried was similar to:

i.putExtra(ID_EXTRA1, "1");
i.putExtra(ID_EXTRA2, "111");

但ID_EXTRA2似乎改写ID_EXTRA1

but ID_EXTRA2 seems to write over ID_EXTRA1

因此​​，

i.putExtra(ID_EXTRA, new String[] { "1", "111"});

貌似走，但我怎么从第二个活动的数组中提取的值，我已经使用这个为一个值是。

Looks like the go but how do I extract the values from the array in the second activity, I have been using this for a single value.

passedVar = getIntent().getStringExtra(CoastList.ID_EXTRA);

我想我必须把ID_EXTRA到一个数组不知何故???

I guess I have to turn ID_EXTRA into an array somehow???

推荐答案

您可以通过使用多个键传递多个值。而不是

You can pass multiple values by using multiple keys. Instead of

i.putExtra(ID_EXTRA, "1", "111");

DO

i.putExtra(ID_EXTRA1, "1");
i.putExtra(ID_EXTRA2, "111");

当然，你必须定义2常量的钥匙，并有在新的活动分开读取这两种。

Of course you have to define 2 constants for the keys and have to read both seperately in the new activity.

或者你也可以通过

i.putExtra(ID_EXTRA, new String[] { "1", "111"});

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