android - How to open AlertDialog from preference screen? -

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I am developing an application in Android, if I prefer the user to the checkbox from the preferences screen, then show the alert dialog. So how can I do this ..?

override onSharedPreferenceChanged your priority category: / P> 

  public class MyPreferences increases priority tools OnSharedPreferenceChangeListener {... shared sharing shared on public (shared shared references, string key) {if (key.equals ("MyCheckboxPreferenceKey") ) {// Show your AlertDialog here! }}

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