In the Android preference XML file under the project\res\xml\ folder, create a preference with a title for Legal Notices as shown below. This preference is given the key string prefLegalNotices.
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
<PreferenceCategory
android:title="About the dataset"
>
<Preference
android:key="prefLegalNotices"
android:title="Legal notices"
/>
</PreferenceCategory>
</PreferenceScreen>
Then in the PreferenceFragment source file, override the onPreferenceTreeClick method.
public class SettingsFragment extends PreferenceFragment implements OnPreferenceChangeListener {
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
Preference preference) {
String key = preference.getKey();
//if the user click on the Legal Notices preference, display the license
if (key.equalsIgnoreCase("prefLegalNotices")){
String LicenseInfo = GooglePlayServicesUtil.getOpenSourceSoftwareLicenseInfo(getActivity());
AlertDialog.Builder LicenseDialog = new AlertDialog.Builder(getActivity());
LicenseDialog.setTitle("Legal Notices");
if (LicenseInfo!=null){
LicenseDialog.setMessage(LicenseInfo);
LicenseDialog.show();
}
}
return super.onPreferenceTreeClick(preferenceScreen, preference);
}
}
The screenshots below show how it works.
4 comments:
I cannot extend PreferenceFragment, because I am supporting lower than API 11. However, with your example, I get, "The method getActivity() is undefined for the type." How do I correct this for extending PreferenceActivity?
public class PreferencesActivity extends PreferenceActivity {
@SuppressWarnings("deprecation")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
}
@SuppressWarnings("deprecation")
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference)
{
super.onPreferenceTreeClick(preferenceScreen, preference);
if (preference!=null)
if (preference instanceof PreferenceScreen)
if (((PreferenceScreen)preference).getDialog()!=null)
((PreferenceScreen)preference).getDialog().getWindow().getDecorView().setBackgroundDrawable(this.getWindow().getDecorView().getBackground().getConstantState().newDrawable());
return false;
String key = preference.getKey();
//if the user click on the Legal Notices preference, display the license
if (key.equalsIgnoreCase("prefGoogleLegal")){
String LicenseInfo = GooglePlayServicesUtil.getOpenSourceSoftwareLicenseInfo(getActivity());
AlertDialog.Builder LicenseDialog = new AlertDialog.Builder(getActivity());
LicenseDialog.setTitle("Legal Notices");
if (LicenseInfo!=null){
LicenseDialog.setMessage(LicenseInfo);
LicenseDialog.show();
}
}
return super.onPreferenceTreeClick(preferenceScreen, preference);
}
}
I cannot utilize PreferenceFragment because I am supporting API 10. However, because of that I get, "The method getActivity() is undefined for the type..." Is there a workaround for this in your provided code? Thanks!
Hi thetuneupguy,
just do something like this{
dialog = new AlertDialog.Builder(this);
because PreferenceActivity is an activity
HTH
Roger that!
This did the trick...
String key = preference.getKey();
//if the user click on the Legal Notices preference, display the license
if (key.equalsIgnoreCase("prefGoogleLegal")){
String LicenseInfo = GooglePlayServicesUtil.getOpenSourceSoftwareLicenseInfo(this);
Builder LicenseDialog = new AlertDialog.Builder(this);
LicenseDialog.setTitle("Legal Notice");
if (LicenseInfo!=null){
LicenseDialog.setMessage(LicenseInfo);
LicenseDialog.show();
}
}
return super.onPreferenceTreeClick(preferenceScreen, preference);
}
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