安卓：动态创建控件和方向变化 [英] Android: dynamically creating controls and orientation change

问题描述

目前我的工作是动态创建控件的Andr​​oid应用程序。每次用户会点击一个新的EditText出现的按钮下面一个按钮，用户可以与的EditText交互。但是，如果屏幕的方向发生变化，EditText上的也创建的用户消失。

Currently I am working on an Android application that is dynamically creating controls. Everytime a user would click a button a new EditText appears below the button and the user can interact with the EditText. However if the screen orientation changes, the EditText's that the user created also disappears.

code的用户创建的EditText样本：（位于的onClick（），p为基本layoutParamas和布局是位于undearneath该按钮的LinearLayout）

Code sample of user creating a EditText: (located in a onClick(), p is basic layoutParamas, and layout is a LinearLayout located undearneath the button)

    EditText editText = new EditText(this);
    layout.addView(buttonView, p);

想知道什么是保存布局时，屏幕方向改变了，所以我不丢失任何控件的最简单的方法，还是我dyanmically创建控件错误的。

Wondering what would be the easiest way to save the layout when the screen orientation changes so I do not loose any of the controls, or am I dyanmically creating the controls wrong.

感谢。

更新：通过覆盖的onSaveInstanceState（）我能救它包含了所有用户orignally添加的控件列表的对象。使用这个名单我能够在OnCreate创建控件（）。

update: By overriding the onSaveInstanceState() I was able to save a object which contained a list of all the controls the user orignally added. Using this list I was able to create the controls in the onCreate().

不过好奇，如果有一个更简单的方法来完成这项任务，因为我将不得不重构很多code，充分实现此方法。

Still curious if there is an easier way to accomplish this task, as I would have to refactor a lot of code to fully implement this method.

推荐答案

尝试添加到您＆LT;活性GT; 在清单文件标记：

Try adding this to your <activity> tag in your manifest file:

android:configChanges="orientation|keyboardHidden"

然后为此在活动类：

Then do this in the activity class:

@Override
public void onConfigurationChanged(final Configuration newConfig)
{
    // Ignore orientation change to keep activity from restarting
    super.onConfigurationChanged(newConfig);
}

如果你这样做你的活动将只是在方向变化，而不是破坏了重用/重建。所以你不会有救一切你都怎么回事的状态。

If you do this your activity will just be reused on orientation change instead of destroyed/recreated. So you won't have to save the state of everything you have going on.

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