如何保存在android系统的结果呢？ [英] How to save a result in android?

问题描述

我在机器人编程菜鸟。我有一个小问题。当我点击一个ImageView的，我作出这样的ImageView无形，并设置一个按钮可见。我的问题是你如何保存吗？对于如我点击的ImageView，按钮用来显示和ImageView的消失。我退出程序，然后输入回相同的活动，我想该按钮留在那里。我该如何去这样做？

I'm a rookie in android programming. I have a small problem. When I click a ImageView, I make that ImageView invisible and set a Button to visible. My problem is that how do you save this? For eg, I click the ImageView, Button shows up and ImageView disappears. And I exit the app and enter back into that same activity and I want that Button to remain there. How do I go about doing that?

谢谢！

推荐答案

使用共享preferences 。这里是如何使用它们的一个很好的教程。

Use SharedPreferences. here is a good tutorial on how to use them. example

但基本上你是好加入这个code到你的活动去

But basically you are good to go by adding this code to your Activity

private boolean isVisible;
@Override
public void onCreate(Bundle myBundle){
          super.onCreate(myBundle);
 isVisible = getPreferences(MODE_PRIVATE).getBoolean("visible", true);
  .... your code
  if (isVisible){
    // show ImageView
 } else {
        //don't
 }
}
}
public void onPause(){
       if(isFinishing()){
         getPreferences(MODE_PRIVATE)
        .edit().
        putBoolean("visible", isVisible).commit();
 }
}

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