将活动中的数据发送到另一个而不启动它 [英] send data from activity to another without start it

问题描述

如果我有两个活动Activity1和Activity2，并且我想在不启动Activity2的情况下将数据从Activity1发送到Activity2

If I have two activities Activity1 and Activity2 and I want to send data from Activity1 to Activity2 without Start Activity2

我知道是否要启动Activity2，我在Activity1.java中使用此代码

I know if I want to start Activity2 I use this code in Activity1.java

Intent intent ;
Bundle bundle = new Bundle();

bundle.putString(BG_SELECT, hexColor);

intent = new Intent(getApplicationContext(), Activity2.class);

intent.putExtras(bundle);

// this is to start but I want just refresh Activity2 not start it
startActivityForResult(intent, uniqueNo);

和Activity2.java

and in Activity2.java

bundle = getIntent().getExtras();

if (bundle != null) {
   bgColor = bundle.getString(SebhaActivity.BG_SELECT);
   System.out.println("in Activity2, selected BG: "+bgColor);

}

如何在不启动Activity2的情况下刷新Activity2以在其中查找数据? 预先感谢.

How to refresh Activity2 to find data in it without Start it? Thanks in Advance.

推荐答案

如果下一个活动(您需要数据，即Activity2的地方)不会从此处开始，则可以将数据保存在活动1的SharedPreferences中，并在活动2时访问它您到达那里

if the next activity (where you need data, Activity2 i.e) wont start from here you can save the data in SharedPreferences in Activity 1 and access it in activity2 when you get there

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