Java tutorial
/* * Copyright (C) 2015 Vincent Breitmoser <v.breitmoser@mugenguild.com> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.sufficientlysecure.keychain.ui; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.view.MenuItem; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.service.input.CryptoInputParcel; import org.sufficientlysecure.keychain.ui.base.BaseActivity; public class BackupActivity extends BaseActivity { public static final String EXTRA_MASTER_KEY_IDS = "master_key_ids"; public static final String EXTRA_SECRET = "export_secret"; @Override protected void initLayout() { setContentView(R.layout.backup_activity); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // noinspection ConstantConditions, we know this activity has an action bar getSupportActionBar().setDisplayHomeAsUpEnabled(true); if (savedInstanceState == null) { Intent intent = getIntent(); boolean exportSecret = intent.getBooleanExtra(EXTRA_SECRET, false); long[] masterKeyIds = intent.getLongArrayExtra(EXTRA_MASTER_KEY_IDS); Fragment frag = BackupCodeFragment.newInstance(masterKeyIds, exportSecret, true); FragmentManager fragMan = getSupportFragmentManager(); fragMan.beginTransaction().setCustomAnimations(0, 0).replace(R.id.content_frame, frag).commit(); } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: FragmentManager fragMan = getSupportFragmentManager(); // pop from back stack, or if nothing was on there finish activity if (!fragMan.popBackStackImmediate()) { finish(); } return true; } return super.onOptionsItemSelected(item); } /** * Overridden in RemoteBackupActivity */ public void handleBackupOperation(CryptoInputParcel inputParcel) { // only used for RemoteBackupActivity } }