android.preference.Preference#equals ( )源码实例Demo

@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
                                     Preference preference) {
    if (preference.equals(findPreference(Constants.KEY_PREF_ABOUT_OPEN_SOURCE_LICENSES))) {
        LicensesDialogFragment licensesDialog = LicensesDialogFragment.newInstance();
        licensesDialog.show(getFragmentManager(), "LicensesDialog");
    }
    return super.onPreferenceTreeClick(preferenceScreen, preference);
}
 

@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
                                     Preference preference) {
    if (preference.equals(findPreference(Constants.KEY_PREF_ABOUT_OPEN_SOURCE_LICENSES))) {
        LicensesDialogFragment licensesDialog = LicensesDialogFragment.newInstance();
        licensesDialog.show(getFragmentManager(), "LicensesDialog");
    }
    return super.onPreferenceTreeClick(preferenceScreen, preference);
}
 

@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
    if(preference.equals(fontSizePre)) {
        String prefsValue = newValue.toString();
        fontSizePre.setSummary(showFontSize(prefsValue));
    }
    return true;
}
 

@Override
public boolean onPreferenceClick(Preference preference) {
    if (preference.equals(clearCachePre)) {
        DataClearManager.cleanApplicationData(App.getContext());
        updateCache();
        AppUtils.showSnackBar(view, R.string.data_cleared);
    }
    if(preference.equals(fontSizePre)) {
        fontSizePre.setDefaultValue(PreferenceUtils.getPrefString(getActivity(), "font_size", "16"));
    }
    return false;
}
 

@Override
public boolean onPreferenceChange(final Preference preference, final Object newValue) {
    if (preference.equals(preferenceCallback)) {
        final String value = (String) newValue;
        Toast.makeText(getActivity(), "New value is " + value, Toast.LENGTH_SHORT).show();
        return true;
    }

    return false;
}
 

@Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
                                          String key) {
        Preference pref = findPreference(key);

        if (pref instanceof EditTextPreference) {
            EditTextPreference etp = (EditTextPreference) pref;
            if (pref.equals(name)) {
                group.setName(name.getText());
            }
            if (pref.equals(description)) {
                group.setDescription(description.getText());
            }
            pref.setSummary(etp.getText());

            DataSource.getInstance().storeGroup(group);
        } else if (pref instanceof MultiSelectListPreference) {
            MultiSelectListPreference mp = (MultiSelectListPreference) pref;
//            Log.d(TAG, "MultiSelectListPreference changed, with trackIds: " + TextUtils.join(",", mp.getValues()));
            // Convert the Set returned by getValues into a List, as expected by setTrackIdsUsingStrings:
            List<Integer> trackIds = new ArrayList<>();
            for (String value : mp.getValues()) {
                trackIds.add(Integer.valueOf(value));
            }
            mDataSource.linkManyTracksOneGroup(trackIds, group.getId());
//            Log.d(TAG, "\tUser selected: " + TextUtils.join(",", trackIds));

            mTracksPref.setSummary(getTrackNamesForSummary());
//                    + "  \n" + TextUtils.join("\n", mDataSource.getGroups())); // Leaving here for future debugging, until tests are written
//            Log.d(TAG, "Confirm that the group IDs are correct: " + TextUtils.join(",", track.getGroupIdsAsSet()));
//            Log.d(TAG, "Confirm that the group NAMES are correct: " + TextUtils.join(",", track.getGroupNamesAsSet()));

        }
        mDataSource.storeGroup(group);

        // If this was launched simply to edit the track list, then exit at this point.
        if (mOpenTrackList) {
            getActivity().onBackPressed();
        }
    }
 

@Override
public boolean onPreferenceChange(final Preference preference, final Object newValue) {
    if (preference.equals(preferenceCallback)) {
        final int value = (int) newValue;
        Toast.makeText(getActivity(), "New value is " + value, Toast.LENGTH_SHORT).show();
        return true;
    }

    return false;
}
 

@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
        String key) {
    Preference pref = findPreference(key);
    Log.v(TAG, "onSharedPreferenceChanged -- " + pref.getTitle());

    if (pref instanceof IconPreference) {
        if (pref.equals(icon)) {
    		track.setIcon(icon.getText());
            //icon.setSummary(track.getIcon());
    	}
    }
    if (pref instanceof TickColorPreference) {  // TickColorPreference instances are also EditTextPreference
        track.getTickColor().setColorValue(mTickColorPreference.getColorValue());
    } else if (pref instanceof EditTextPreference) {
        EditTextPreference etp = (EditTextPreference) pref;
        if (pref.equals(name)) {
        	track.setName(name.getText());
        }
        if (pref.equals(description)) {
        	track.setDescription(description.getText());
        }
        pref.setSummary(etp.getText());
    }
    else if (pref instanceof CheckBoxPreference) {
    	if (pref.equals(enabled)) {
    		track.setEnabled(enabled.isChecked());
    	}
    	if (pref.equals(multiple_entries_enabled)) {
            track.setMultipleEntriesEnabled(multiple_entries_enabled.isChecked());
        }
    } else if (pref instanceof GroupListPreference) {
        if (pref.equals(mGroupsPref)) {
            // Convert the Set returned by getValues into a List, as expected by setGroupIdsUsingStrings:
            List<Integer> groupIds = new ArrayList<>();
            for (String value : mGroupsPref.getValues()) {
                groupIds.add(Integer.valueOf(value));
            }
            mDataSource.linkOneTrackManyGroups(track.getId(), groupIds);
            mGroupsPref.populate();
        }
    }
    mDataSource.storeTrack(track);
}