如何传递两个活动之间数据的android？ [英] How to pass data between two activities in android?

问题描述

如何传递两个活动之间的数据在Android的？

How to pass data between two activities in android?

以下是我的code： -

Following is my code:-

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

其次，我使用的共享preferences为： -

Second I used SharedPreferences for that:-

有关传递数据： -

For Pass Data:-

 SharedPreferences gameSettings = getSharedPreferences("MyGamePreferences",MODE_PRIVATE);  
 SharedPreferences.Editor prefEditor = gameSettings.edit();  
 prefEditor.putString("UserName", "Guest123");  
 prefEditor.putBoolean("PaidUser", false);  
 prefEditor.commit();

有关获得在接下来的活动数据： -

For Getting Data in next Activity:-

SharedPreferences gameSettings = PreferenceManager
                                .getDefaultSharedPreferences(getBaseContext());
String s= gameSettings.getString("UserName", "Dipak");
Boolean b= gameSettings.getBoolean("PaidUser", true);

但数据没有得到在一个活动。

but data is not getting in next activity.

推荐答案

你为什么不使用mIntent.putExtra（），用于将数据传递到另一个活动？

Why don't you use mIntent.putExtra() for passing data to another activity?

看到你的代码，你可以使用让您的sessionId的下一个活动：（假设你的sessionId作为整数）

Seeing your coding,you can get your sessionId in next activity using:(assuming your sessionId as integer)

int sessionId=getIntent().getIntExtra("EXTRA_SESSION_ID");

和您从共享preferences获得值的方式是绝对correct.I不知道为什么你没有得到他们的下一个活动。

And the way you are getting values from SharedPreferences is absolutely correct.I don't know why you are not getting them in next activity.

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