How to implement a confirmation yes no DialogPreference

Question

How can I implement a Preference that displays a simple yes no confirmation dialog   For an example  see Browser- gt Setting- gt Clear Cache

User · Accepted Answer

That is a simple alert dialog  Federico gave you a site where you can look things up   Here is a short example of how an alert dialog can be built   new AlertDialog Builder this   setTitle  Title    setMessage  Do you really want to whatever     setIcon android R drawable ic dialog alert   setPositiveButton android R string yes  new DialogInterface OnClickListener          public void onClick DialogInterface dialog  int whichButton            Toast makeText MainActivity this   Yaay   Toast LENGTH SHORT  show              setNegativeButton android R string no  null  show

User · Answer

Use Intent Preference if you are using preference xml screen or you if you are using you custom screen then the code would be like below  intentClearCookies   getPreferenceManager   createPreferenceScreen this       Intent clearcookies   new Intent PopupPostPref this  ClearCookies class        intentClearCookies setIntent clearcookies       intentClearCookies setTitle R string ClearCookies       intentClearCookies setEnabled true       launchPrefCat addPreference intentClearCookies     And then Create Activity Class somewhat like below  As different people as different approach you can use any approach you like this is just an example   public class ClearCookies extends Activity      Override protected void onCreate Bundle savedInstanceState           TODO Auto-generated method stub     super onCreate savedInstanceState       requestWindowFeature Window FEATURE NO TITLE        showDialog               throws NotFoundException     private void showDialog   throws NotFoundException       new AlertDialog Builder this               setTitle getResources   getString R string ClearCookies                setMessage                      getResources   getString R string ClearCookieQuestion                setIcon                      getResources   getDrawable                              android R drawable ic dialog alert                setPositiveButton                      getResources   getString R string PostiveYesButton                       new DialogInterface OnClickListener                               Override                         public void onClick DialogInterface dialog                                  int which                                  Do Something Here                                                                setNegativeButton                      getResources   getString R string NegativeNoButton                       new DialogInterface OnClickListener                               Override                         public void onClick DialogInterface dialog                                  int which                                  Do Something Here                                                  show         As told before there are number of ways doing this  this is one of the way you can do your task  please accept the answer if you feel that you have got it what you wanted

User · Answer

Android comes with a built-in YesNoPreference class that does exactly what you want  a confirm dialog with yes and no options   See the official source code here   Unfortunately  it is in the com android internal preference package  which means it is a part of Android s private APIs and you cannot access it from your application  private API classes are subject to change without notice  hence the reason why Google does not let you access them    Solution  just re-create the class in your application s package by copy pasting the official source code from the link I provided  I ve tried this  and it works fine  there s no reason why it shouldn t    You can then add it to your preferences xml like any other Preference  Example    lt com example myapp YesNoPreference     android dialogMessage  Are you sure you want to revert all settings to their default values       android key  com example myapp pref reset settings key      android summary  Revert all settings to their default values       android title  Reset Settings    gt    Which looks like this

[android] How to implement a confirmation (yes/no) DialogPreference?

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