[Résolu] Inviter l'utilisateur à activer l'application d'administration de l'appareil

@Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
            if (super.onPreferenceChange(preference, newValue)) {
                return true;
            }
            boolean value = (Boolean) newValue;
            if (preference == mEnableCheckbox) {
                if (value != mAdminActive) {
                    if (value) {
                        // Launch the activity to have the user enable our admin.
                        Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
                        intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, mDeviceAdminSample);
                        intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,
                                mActivity.getString(R.string.add_admin_extra_app_text));
                        startActivityForResult(intent, REQUEST_CODE_ENABLE_ADMIN);
                        // return false - don't update checkbox until we're really active
                        return false;
                    } else {
                        mDPM.removeActiveAdmin(mDeviceAdminSample);
                        enableDeviceCapabilitiesArea(false);
                        mAdminActive = false;
                    }
                }
            } else if (preference == mDisableCameraCheckbox) {
                mDPM.setCameraDisabled(mDeviceAdminSample, value);
                ...
            }
            return true;
        }