如何在 Android 应用程序中的活动之间传递数据? [英] How do I pass data between Activities in Android application?

问题描述

我有一个场景，在通过登录页面登录后，每个 activity 上都会有一个注销 button.

I have a scenario where, after logging in through a login page, there will be a sign-out button on each activity.

在点击sign-out 时，我将传递登录用户的session id 以退出.谁能指导我如何让 session id 对所有 activity 可用?

On clicking sign-out, I will be passing the session id of the signed in user to sign-out. Can anyone guide me on how to keep session id available to all activities?

这种情况的任何替代方案

Any alternative to this case

推荐答案

最简单的方法是将会话 ID 传递给您用来启动的 Intent 中的注销活动活动:

The easiest way to do this would be to pass the session id to the signout activity in the Intent you're using to start the activity:

Intent intent = new Intent(getBaseContext(), SignoutActivity.class);
intent.putExtra("EXTRA_SESSION_ID", sessionId);
startActivity(intent);

访问下一个活动的意图:

Access that intent on next activity:

String sessionId = getIntent().getStringExtra("EXTRA_SESSION_ID");

Intent 的 docs 有更多信息(查看标题为额外"的部分).

The docs for Intents has more information (look at the section titled "Extras").

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