There comes a time when you need to show a EULA to your users of your Android apps. Doing this is pretty easy if you decide to ALWAYS show it when the user uses your app. However, that’s beyond annoying. The best case scenario for displaying a EULA to a user would go like this…
- User installs your app
- User opens your app
- User is presented with a EULA
- Users Accepts EULA?
- No –> Close app
- Yes –> Continue
- User uses app, closes it.
- User re-opens app for a subsequent use. EULA IS NOT displayed.
- An update for the app is available.
- User installs App Update
- User opens the app.
- User is presented with a new updated EULA again.
As you can see, this can become a royal PITA for managing. So how do you do you it?
Very simple. Use the version code and the shared preferences.
How To Implement the SimpleEula.java File
I’ve created a file by the name of SimpleEula.java that will display a Dialog with the Eula and two buttons (Ok, Cancel … You can rename them anything you want). Upon initialization of the first activity of the app, SimpleEula will grab the version code of the app, and then use that version code to create a unique key for the version. Such as “eula_1” or “eula_2”, etc. SimpleEula uses this key to check shared preferences if this key has been set. If it HAS then it means that the user has accepted the EULA and nothing happens, the user is greeted with the first activity of the app. If the key has NOT been seen before, SimpleEula will display a Dialog with a Eula in it (along with app updates – which both from from the string resources of the app) and the user can accept or decline the Eula (Ok or Cancel buttons). If the user selects OK, the key is set in shared preferences so upon susequent app starts, the Eula WILL not be displayed.
Therefore, the only time the user will see a new Eula display to them is when the version code changes. Since new features are introduced in new versions, this is the perfect time to show the Eula again.
Whats the code look like?
To use SimpleEula, add the SimpleEula.java file (download below from the sample project on GitHub) to your app. Add the required string resources:
- eula
- updates
Then in the first activity of your app, add a call to SimpleEula’s show method:
public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
new SimpleEula(this).show();
}
}
This will create Eula that looks like this:
The user clicks “OK” and the eula key will be saved in shared preferences and the user will not be bugged about the Eula again until an app update is made.
Here’s the full code for SimpleEula.java. You can also download the sample project on GitHub via the link at the end of this post.
public class SimpleEula {
private String EULA_PREFIX = "eula_";
private Activity mActivity;
public SimpleEula(Activity context) {
mActivity = context;
}
private PackageInfo getPackageInfo() {
PackageInfo pi = null;
try {
pi = mActivity.getPackageManager().getPackageInfo(mActivity.getPackageName(), PackageManager.GET_ACTIVITIES);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return pi;
}
public void show() {
PackageInfo versionInfo = getPackageInfo();
// the eulaKey changes every time you increment the version number in the AndroidManifest.xml
final String eulaKey = EULA_PREFIX + versionInfo.versionCode;
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mActivity);
boolean hasBeenShown = prefs.getBoolean(eulaKey, false);
if(hasBeenShown == false){
// Show the Eula
String title = mActivity.getString(R.string.app_name) + " v" + versionInfo.versionName;
//Includes the updates as well so users know what changed.
String message = mActivity.getString(R.string.updates) + "\n\n" + mActivity.getString(R.string.eula);
AlertDialog.Builder builder = new AlertDialog.Builder(mActivity)
.setTitle(title)
.setMessage(message)
.setPositiveButton(android.R.string.ok, new Dialog.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
// Mark this version as read.
SharedPreferences.Editor editor = prefs.edit();
editor.putBoolean(eulaKey, true);
editor.commit();
dialogInterface.dismiss();
}
})
.setNegativeButton(android.R.string.cancel, new Dialog.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// Close the activity as they have declined the EULA
mActivity.finish();
}
});
builder.create().show();
}
}
}
Thanks for eliminating some clerk-typist work that has the stellar advantage of being thought through and tested.
No problem. Enjoy!
Sent from Android
TERA’s UI is also completely modular, meaning that players can move it around and generally customize it to their liking without resorting to hacks that violate the EULA or throwing up their hands in frustration. This is a far cry from previous Korean …
These include fancy screensavers, backgrounds and other adornments for your Mac. When you install these freebies you are prompted to accept an End User License Agreement (EULA). This EULA asks for your permission to spy on your browsing habits, …
These include fancy screensavers, backgrounds and other adornments for your Mac. When you install these freebies you are prompted to accept an End User License Agreement (EULA). This EULA asks for your permission to spy on your browsing habits, …
Great.
Thomas from India
This is a good way for a EULA but if you update alot you get alot of overhead so it should be better to use
if(versionInfo.versionCode != prefs.getInt(EULA_PREFIX,0)){
and
editor.putInt(EULA_PREFIX, versionInfo.versionCode);
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When it comes to home décor, there are
decorating
basics that many of us are not
…
What about for a very
small space
? “Make a
small space
feel as large as
you can live in the space before you start decorating, that’s even better. “To be able to try the space on for a little while and then ease your way into the decorating is always good,” Carrier says.
A slightly different approach here – this code is designed to present
the EULA dialog every time the version number changes – whenever you
update the app. This means you can also display a message with recent
changes and updates, which is a handy feature.
This is not really an answer to your
question, so I’ll make it a comment: If it’s OK that people copy,
redistribute and reverse-engineer your program, should you perhaps
license it under a free software license? A very simple version is the
three-clause BSD license, which also includes a warranty disclaimer. If
you want to protect against others taking your code and not re-sharing
it under the same license, something like the GPL is more appropriate.
Does that not sound like a closed eco system? by
solitare_pax (5086 comments ) June 13, 2011 8:12 AM PDT Yes, it does
sound like a closed eco system; however, we are still dealing with many
fractured ecosystems; Kindle, Nook, Android, Windows, Linux, …
nice work, thanks for sharing
Android operating system has taken the world by storm, mobile application development for a while time. Of course, it is becoming less and less the number of applications available for the platform than other platforms like iPhone, BlackBerry and Symbian, but it is certain that Googles Android has already begun to spread its tentacles to other handsets. His recent earnings call, the T-Mobile announced it had sold its millionth mobile G1 with Android open source operating system, which means that Google has just six months later. All this means that it is a remarkable achievement considering the incredible anticipation and fervor for the iPhone.
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There seems to be a problem with the above code. If you open your app then hit the back button, the EULA message goes away without having to accept it. It will still be there next time you start the app, but technically the user will never “have” to accept it.
I meant to add this…
If you just add .setCancelable(false) to your AlertDialog.Builder, you can bypass this issue and force either an Accept or Refuse.
Is there any way to disable the search button ? If they hit the search button, the EULA will go away without having to accept the EULA itself. At the moment, the only workaround i’m finding is to code the search function to oblivion outside of the EULA itself.
To prevent the SEARCHkey (SEARCH button) and potentially other keys from accepting the EULA, you should use the setOnKeyListener() to override the onKey() method of the AlertDialog “builder” specifically. This is because theAlertDialog “builder” will be on top and will be handling key events when the dialog is displayed.
EXAMPLE SNIPPET: This will cause all keys to be ignored (including the SEARCHkey), except for the HOMEkey!
AlertDialog.Builder builder = …
…
builder.setOnKeyListener(new OnKeyListener() { @Override public boolean onKey(DialogInterface dialoginterface, int keyCode, KeyEvent event) { if ((keyCode == KeyEvent.KEYCODE_HOME)) { return false; } else { return true; } }});
builder.setCancelable(false)
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Adding builder.setCancelable(false) will make the back button redundant and the android User Experience of getting out of the application on presseing the back button would be Lost. This would look like a forced way of either accepting or rejecting.
It would be better if one over rides the method oncancellister, it would look more appropriate;
Eg:
builder.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { // TODO Auto-generated method stub YourActivity.finish(); } });
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Enjoy this awesome app as the iphone lock replacement for your android phone. 1. … This EULAgrants you no rights to use such content.
After all, Microsoft’s EULA states ‘By using the software, … all manner of useful apps – mostly for free, thanks to Google Android’s open-source platform. …
Excellent creativity.Every one looking for this kind of valuable tips.All the points are explained very clear mind.
U have made an interesting blog..Thanks for sharing !!
Cheers! Makes the steps easy and I like the responses for lessening the upgrade EULA screens as well.
To disable the back and search buttons, I added this code after the .setNegativeButton call:
.setOnCancelListener(new DialogInterface.OnCancelListener() {
public void onCancel(DialogInterface dialog) {
// Close the activity as they have declined the EULA
mActivity.finish();
}
})
Good post. Helped get my first EULA integrated quickly. BTW, if anyone runs into the following error on SimpleEULA.java,
“The method onClick(DialogInterface, int) of type new DialogInterface.OnClickListener(){} must override a superclass method”
then here is a solution,
http://androidideasblog.blogspot.com/2010/08/re-import-android-project-issue.html
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EULA vs simple disclaimer for Android App. up vote 1 down vote favorite. 1. I’m about to release a free app to the Android Market, and am unsure … This is not really an answer to your question, so I’ll make it a comment: If it’s …
it was much useful, thaks
Thank you! This was very helpful.
Thank you.
to disable back buttons etc just put dialog.setCancelable(false)
Thanks for the information. You have made this process painless!
Test
Thanks works great!!!
Very useful. Thanks!
Thanks allot. it saved time and effort.
I am wondering how I might use two external text files with this, for eula and updates, instead of the implemented strings. Any pointers?
Yeah you could create text files and put them into the assets/ folder. Give them a name such as eula_1.txt and then use the same logic as above. Instead of using the resources you simply open the text file through getAssets() and then put the text into the field that you want. I hope that helps.
Hi, I’m fairly new to app developing and I followed your instructions however in android studios it is saying that it can’t resolve symbol R. Please could you let me know if there’s a solution to this? Thanks
To download the sourcecode visit here: http://androidexample.com/
what if user clears application data/cache it will again display the EULA?
Can anyone help okease?!. I get this pop up consistently while on the internet and Facebook,
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User acceptance
Sample EULA Text
I accept I decline
Regardless of whether I accept or decline, this message pops up again and again with no rhyme or reason. Samsung help had me do a Soft reset and that did nothing. Samsung store rep. Said it must be attached to an app. I checked my avast security and uninstalled many, no result. This pop up is so annoying it’s driving me nuts. Thank You!
There is no need to show the EULA again to the user when the app has been updated right ? We should show the EULA only if the EULA has been updated.
I don’t this will work in that case.
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Thanks this is a very useful example, and the comments about disabling back helps too.
My only hassle was a secondary one – strings.xml and the hokey way you have to use to make titles bold in a block of text, since strong or b tags won’t work.
A EULA is very important for an app. This article from Chris Hoffman, http://www.makeuseof.com/tag/app-permissions-work-care-android/ explains why a EULA is very different from accepting a range of permissions at app install time.
Also a privacy agreement for your customers, also quite key.