复选框Android的节能状态，如果退出应用程序 [英] Android saving state of checkbox if exit app

问题描述

我有5 checkboxs和被点击时，他们一个抽象类来使用onCheckedChangeListener true或false设置一个布尔值。例如：

I have 5 checkboxs and when they are clicked they set a boolean in an abstract class to true or false using a onCheckedChangeListener. Example:

checkbox.setOnCheckedChangeListener(new OnCheckedChangeListener(){

            @Override
            public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) 
            {
                if(isChecked)
                {
                    CheckboxData.checked = true;
                }
                else if(!isChecked)
                {
                    CheckboxData.checked = false;
                }

            }

        });

然而，当我离开应用程序，并返回复选框被再也没有点击，但布尔值仍然如​​此。我怎样才能使应用程序记住的复选框被点击？如果我只是检查布尔值的主要活动的onCreate并设置checkboxs托运或没有，那么还是有使应用程序记住checkboxs状态的更好/更快的方式？

However when I leave the app and return the checkboxes are not clicked anymore, yet the boolean values are still true. How can I make the app remember that the check boxes are clicked.? Should I just check the boolean values in the main activity onCreate and set the checkboxs to checked or not then or is there a better/faster way to make the app remember the checkboxs states?

刚刚在主要活动添加了这个onCreate方法：

Just added this in the main activities onCreate method:

      if(CheckboxData.checked)
    {
        CheckBox checkbox = (CheckBox) findViewById(R.id.checkbox);
        checkbox.setChecked(true);
    }

但它确实没有什么

But it does nothing

推荐答案

在活动 GET 摧毁选中复选框国家如果属实，并添加共享preference复选框状态

when Activity get destroyed check the checkbox state if true , and add the checkbox state in shared Preference

     @Override
    public void onDestroy() {

    if(CheckboxData.checked){
     SharedPreferences prefs = getSharedPreferences("private preference", Context.MODE_PRIVATE);
            prefs.edit()
                .putBoolean("CheckboxData",true)
                .commit();
   }
    super. onDestroy();

   }

当活动推出回来，在的onCreate 为您在preference，如果该复选框状态真正使复选框

And when Activity is launched back, In onCreate check for the checkbox state in preference and if true enable the checkbox

  SharedPreferences prefs = getSharedPreferences("private preference", Context.MODE_PRIVATE);

  boolean isChecked = prefs.getBoolean("CheckboxData",false);
  if(isChecked)
  checkBoxView.setChecked(true) 

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