通过多个活动传递数据 [英] Passing data though multiple activities

问题描述

1-是我的第一个活动(主) 2-是我的第二项活动 3-这是我的第三项活动

1- is my first activity(main) 2- is my second activity 3 - is my third activity

我想从1开始运行2，然后从3开始形成表格2，然后从3开始运行，我正在获取数据并将其返回给1.希望您能理解.

I want to run 2 from 1 and then form 2 run 3 , and then from 3 i am taking data and returning it to 1. Hope guys you will understand.

这是我的代码:

Runing 2 form 1 likes:

Runing 2 form 1 liek this :

            Intent intent = new Intent(getApplicationContext(),MessageBox.class);
             intent.setFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
            startActivityForResult(intent,5);               

然后像这样从2运行3:

And then running 3 from 2 like this:

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

                startActivityForResult(intent,5);

然后在3中我有类似的东西:

And then in 3 i have something like this:

          setResult(10);
          finish();

所以我将结果设置为2，以获得以下结果:

So i set result so in 2 to get this result i have:

        if(requestCode==5)
        {
            if(resultCode==10)
            {

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

                setResult(5,intent);
                finish();
            }
        }

然后在1中我得到:

     if(requestCode==5)
     {
         if(resultCode==5)
         {
             //here i am taking data from 3
         }
     }

问题是我什至无法在logcat中打开2个coz:

Problem is i cant even open 2 coz in logcat i am getting:

04-23 22:13:15.579:E/AndroidRuntime(15313):android.util.AndroidRuntimeException:同时请求结果时使用了FORWARD_RESULT_FLAG

04-23 22:13:15.579: E/AndroidRuntime(15313): android.util.AndroidRuntimeException: FORWARD_RESULT_FLAG used while also requesting a result

我真的不知道该怎么办.请看下面的代码.

And i dont really get what should i do. Please look at this code.

推荐答案

从1开始从2开始，您将无法执行此操作.

You cannot do this when starting 2 from 1:

Intent intent = new Intent(getApplicationContext(), MessageBox.class);
intent.setFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
startActivityForResult(intent,5);

这将引发您得到的异常.您不能同时使用FLAG_ACTIVITY_FORWARD_RESULT和startActivityForResult().

This will throw the exception you are getting. You cannot use FLAG_ACTIVITY_FORWARD_RESULT and startActivityForResult() together.

如果您希望1从3中得到结果，那么您需要像这样从1开始2:

If you want 1 to get the result from 3, then you need to start 2 from 1 like this:

Intent intent = new Intent(getApplicationContext(), MessageBox.class);
startActivityForResult(intent, 5);

然后像这样从2开始3:

and then start 3 from 2 like this:

Intent intent = new Intent(getApplicationContext(), ImageReceiver.class);
intent.setFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
startActivity(intent);
finish();

这告诉Android活动3(ImageReceiver)应该将其结果转发回称为活动2(MessageBox)的活动.当活动3设置其结果并结束时，活动1中的onActivityResult()将被调用，并带有活动3中发送的结果数据.

This tells Android that activity 3 (ImageReceiver) should forward its result back to the activity that called activity 2 (MessageBox). When activity 3 sets its result and finishes, onActivityResult() in activity 1 will be called with the result data sent from activity 3.

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