Android:从堆栈中删除活动 [英] Android: remove activity from stack

问题描述

我的应用程序后端具有数据库树结构. 基本上看起来像这样:

I have a database tree structure in the backend of my application. It basically looks like the following:

List
  |- View

我编写了将视图转换为显示视图的列表的功能.显示在这里:

I wrote the functionality to transform a View to a List displaying the View. Shown in here:

List
  |- List
     |- View

当触发toList()函数时，应用程序应重建数据库中的结构，并切换到显示列表内容的新列表活动.

When triggering the toList() function the Application should rebuild the structure in the database, and switch to the new List Activity displaying the list content.

以上所有作品，除了一件事:

All of the above works, except one thing:

切换到新的列表活动时，应从堆栈中删除以前的视图，以便在按后退"按钮时保持顺序.

When switching to the new List Activity the previous View should be removed from the stack in order to keep the order when pressing the 'back' button.

我尝试了以下意图:

Intent i = new Intent(ViewActivity.this, ListActivity.class);
// new_item is a DTO containing the needed id to create the List activity
i.putExtra("selected_item", _new_item);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PostActivity.this.startActivity(i);

以及:

Intent i = new Intent(ViewActivity.this, ListActivity.class);
// new_item is a DTO containing the needed id to create the List activity
i.putExtra("selected_item", _new_item);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
PostActivity.this.startActivity(i);

两者均无法正常工作.

是否还有其他可能出于上述目的使用finish()的方法? 我显然不想为得到结果而开始活动.

Is there any other method of maybe using finish() with the above intent? I explicitely don't want to start the activity for a result.

推荐答案

只需在代码末尾添加finish()并删除标志，这将破坏ViewActivity并将其从堆栈中删除！

Just add a finish() at end of your code and remove the flags, this will destroy the ViewActivity and it will be removed from your stack!

Intent i = new Intent(ViewActivity.this, ListActivity.class);
// new_item is a DTO containing the needed id to create the List activity
i.putExtra("selected_item", _new_item);
PostActivity.this.startActivity(i);

finish();

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