Java tutorial
/** * CredentialDetailFragment.java * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * Copyright (C) Wouter Lueks, Radboud University Nijmegen, Februari 2013. */ package org.irmacard.androidmanagement; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.List; import org.irmacard.android.util.credentials.AndroidWalker; import org.irmacard.android.util.credentials.CredentialPackage; import org.irmacard.androidmanagement.adapters.CredentialAttributeAdapter; import org.irmacard.credentials.Attributes; import org.irmacard.credentials.info.AttributeDescription; import org.irmacard.credentials.info.CredentialDescription; import org.irmacard.credentials.info.IssuerDescription; import android.app.Activity; import android.graphics.Bitmap; import android.os.Bundle; import android.support.v4.app.Fragment; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; /** * A fragment representing a single Credential detail screen. This fragment is * either contained in a {@link CredentialListActivity} in two-pane mode (on * tablets) or a {@link CredentialDetailActivity} on handsets. */ public class CredentialDetailFragment extends Fragment { /** * The fragment argument representing the item ID that this fragment * represents. */ public static final String ARG_ITEM_ID = "item_id"; public static final String ARG_ITEM = "item"; public interface Callbacks { /** * Callback when credential has to be deleted */ void onDeleteCredential(CredentialDescription cd); } CredentialAttributeAdapter mAdapter; CredentialPackage credential; AndroidWalker aw; private LayoutInflater inflater; private org.irmacard.androidmanagement.CredentialDetailFragment.Callbacks mCallbacks; /** * Mandatory empty constructor for the fragment manager to instantiate the * fragment (e.g. upon screen orientation changes). */ public CredentialDetailFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (getArguments().containsKey(ARG_ITEM)) { credential = (CredentialPackage) getArguments().getSerializable(ARG_ITEM); } aw = new AndroidWalker(getResources().getAssets()); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_credential_detail, container, false); this.inflater = inflater; return rootView; } public void onViewCreated(View view, Bundle savedInstanceState) { LinearLayout list = (LinearLayout) view.findViewById(R.id.detail_attribute_list); TextView issuerName = (TextView) view.findViewById(R.id.detail_issuer_description_name); TextView issuerAddress = (TextView) view.findViewById(R.id.detail_issuer_description_address); TextView issuerEMail = (TextView) view.findViewById(R.id.detail_issuer_description_email); TextView credentialDescription = (TextView) view.findViewById(R.id.detail_credential_desc_text); TextView validityValue = (TextView) view.findViewById(R.id.detail_validity_value); TextView validityRemaining = (TextView) view.findViewById(R.id.detail_validity_remaining); ImageView issuerLogo = (ImageView) view.findViewById(R.id.detail_issuer_logo); Button deleteButton = (Button) view.findViewById(R.id.detail_delete_button); IssuerDescription issuer = credential.getCredentialDescription().getIssuerDescription(); issuerName.setText(issuer.getName()); issuerAddress.setText(issuer.getContactAddress()); issuerEMail.setText(issuer.getContactEMail()); // This is not so nice, rather used a Listview here, but it is not possible // to easily make it not scrollable and show all the items. List<AttributeDescription> attr_desc = credential.getCredentialDescription().getAttributes(); Attributes attr_vals = credential.getAttributes(); for (int position = 0; position < attr_desc.size(); position++) { View attributeView = inflater.inflate(R.layout.row_attribute, null); TextView name = (TextView) attributeView.findViewById(R.id.detail_attribute_name); TextView value = (TextView) attributeView.findViewById(R.id.detail_attribute_value); AttributeDescription desc = attr_desc.get(position); name.setText(desc.getName() + ":"); value.setText(new String(attr_vals.get(desc.getName()))); list.addView(attributeView); } // Display expiry if (credential.getAttributes().isValid()) { DateFormat sdf = SimpleDateFormat.getDateInstance(DateFormat.LONG); Date expirydate = credential.getAttributes().getExpiryDate(); validityValue.setText(sdf.format(expirydate)); int deltaDays = (int) ((expirydate.getTime() - Calendar.getInstance().getTime().getTime()) / (1000 * 60 * 60 * 24)); // FIXME: text should be from resources validityRemaining.setText(deltaDays + " days remaining"); } else { // Credential has expired validityValue.setText(R.string.credential_no_longer_valid); validityValue.setTextColor(getResources().getColor(R.color.irmared)); validityRemaining.setText(""); } credentialDescription.setText(credential.getCredentialDescription().getDescription()); // Setting logo of issuer Bitmap logo = aw.getIssuerLogo(credential.getCredentialDescription().getIssuerDescription()); if (logo != null) { issuerLogo.setImageBitmap(logo); } // On delete button clicked deleteButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { clickedDeleteButton(); } }); } @Override public void onAttach(Activity activity) { super.onAttach(activity); // Activities containing this fragment must implement its callbacks. if (!(activity instanceof Callbacks)) { throw new IllegalStateException("Activity must implement fragment's callbacks."); } mCallbacks = (Callbacks) activity; } private void clickedDeleteButton() { Log.i("blaat", "Delete button clicked"); mCallbacks.onDeleteCredential(credential.getCredentialDescription()); } }