Java tutorial
/* * Copyright (C) 2013 Julien Vermet * * 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 fr.julienvermet.bugdroid.ui; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.os.Handler.Callback; import android.os.Message; import android.os.Messenger; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ProgressBar; import android.widget.RadioGroup; import android.widget.RadioGroup.OnCheckedChangeListener; import android.widget.TextView; import android.widget.Toast; import com.actionbarsherlock.app.SherlockFragment; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuInflater; import com.actionbarsherlock.view.MenuItem; import fr.julienvermet.bugdroid.R; import fr.julienvermet.bugdroid.application.BugDroidApplication; import fr.julienvermet.bugdroid.model.Bug; import fr.julienvermet.bugdroid.model.Instance; import fr.julienvermet.bugdroid.service.BugIntentService; import fr.julienvermet.bugdroid.ui.phone.BugActivity; import fr.julienvermet.bugdroid.ui.tablet.BugMultiPaneActivity; import fr.julienvermet.bugdroid.util.UIUtils; public class BugFragment extends SherlockFragment implements OnCheckedChangeListener, ViewPager.OnPageChangeListener { private static final String BUG_ID = "bugId"; private static final String BUG_TITLE = "bugTitle"; private static final String BUG = "bug"; // UI public ViewPager mViewPager; private RadioGroup mBugTabs; private TextView mListTitle; private MenuItem mRefreshMenu, mBookmarkMenu; private View mInformations; private TextView mInformationsText; private ProgressBar mInformationsProgress; // Objects private BugLoadingListener mBugLoadingListener; private int mBugId; private String mBugTitle; public Bug mBug; private Instance mInstance; public interface BugLoadingListener { void onBugLoading(int bugId); void onBugLoaded(Bug bug); } public static BugFragment newInstance(int bugId, String bugTitle) { BugFragment bugFragment = new BugFragment(); Bundle args = new Bundle(); args.putInt(BUG_ID, bugId); args.putString(BUG_TITLE, bugTitle); bugFragment.setArguments(args); return bugFragment; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_bug, null); mViewPager = (ViewPager) view.findViewById(R.id.bugViewPager); mViewPager.setOnPageChangeListener(this); if (getActivity() instanceof BugActivity || getActivity() instanceof BugMultiPaneActivity) { view.findViewById(R.id.titleView).setVisibility(View.GONE); view.findViewById(R.id.bugTabsScrollable).setVisibility(View.GONE); } else { mListTitle = (TextView) view.findViewById(R.id.listTitle); mBugTabs = (RadioGroup) view.findViewById(R.id.bugTabs); mBugTabs.setOnCheckedChangeListener(this); mBugTabs.check(R.id.bugTabDetails); } mInformations = view.findViewById(R.id.informations); mInformationsText = (TextView) mInformations.findViewById(R.id.informationsText); mInformationsProgress = (ProgressBar) mInformations.findViewById(R.id.informationsProgress); mInformationsText.setVisibility(View.GONE); return view; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setHasOptionsMenu(true); mInstance = BugDroidApplication.mCurrentInstance; if (!UIUtils.isTablet(getActivity())) { getSherlockActivity().getSupportActionBar().setTitle(String.valueOf(mBugId)); mBugLoadingListener = (BugLoadingListener) getActivity(); } Bundle bundle = getArguments(); if (savedInstanceState != null) { mBugId = savedInstanceState.getInt(BUG_ID); mBugTitle = savedInstanceState.getString(BUG_TITLE); mBug = (Bug) savedInstanceState.getSerializable(BUG); bindBug(); } else { mBugId = bundle.getInt(BUG_ID); mBugTitle = bundle.getString(BUG_TITLE); loadBug(true); } setListTitle(mBugTitle); } private void setBookmarkMenu(boolean bookmark) { if (mBookmarkMenu == null) { return; } if (bookmark) { mBookmarkMenu.setIcon(R.drawable.ic_action_star_on); } else { mBookmarkMenu.setIcon(R.drawable.ic_action_star_off); } mBookmarkMenu.setChecked(bookmark); } public void bookmark() { if (mBookmarkMenu == null || mBug == null) { return; } boolean newState = mBookmarkMenu.isChecked() ? false : true; Bug.bookmark(mBug._id, newState); setBookmarkMenu(newState); mBug.isBookmarked = newState; } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); if (getActivity() instanceof BugActivity) { inflater.inflate(R.menu.bug_menu_items, menu); mRefreshMenu = menu.findItem(R.id.menu_refresh); mBookmarkMenu = menu.findItem(R.id.menu_bookmark); if (mBug != null) { setBookmarkMenu(mBug.isBookmarked); } } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: getActivity().finish(); break; case R.id.menu_refresh: refresh(); break; case R.id.menu_bookmark: bookmark(); break; // case R.id.menu_edit: // break; case R.id.menu_share: share(); break; default: // Toast.makeText(getActivity(), "Not yet implemented", Toast.LENGTH_SHORT).show(); } return super.onOptionsItemSelected(item); } public void refresh() { if (mBugLoadingListener != null) { mBugLoadingListener.onBugLoading(mBugId); } loadBug(false); } public void loadBug(boolean fromCache) { Intent intent = BugIntentService.getIntent(getActivity(), mInstance, mBugId, fromCache); Messenger messenger = new Messenger(onBugReceivedHandler); intent.putExtra(BugIntentService.MESSENGER, messenger); getActivity().startService(intent); } private void bindBug() { onPageSelected(0); if (mBug != null) { setListTitle(mBug.summary); mViewPager.setAdapter(new BugFragmentPager(getSherlockActivity())); setBookmarkMenu(mBug.isBookmarked); } else { mInformationsProgress.setVisibility(View.GONE); mInformationsText.setVisibility(View.VISIBLE); mInformationsText.setText(R.string.bug_error); } mInformationsProgress.setVisibility(View.GONE); if (mBugLoadingListener != null) { mBugLoadingListener.onBugLoaded(mBug); } } private void setListTitle(String title) { if (getActivity() instanceof BugActivity || getActivity() instanceof BugMultiPaneActivity) { getSherlockActivity().getSupportActionBar().setTitle(String.valueOf(mBugId)); getSherlockActivity().getSupportActionBar().setSubtitle(title); } else { title = mBugId + " - " + title; mListTitle.setText(title); } } Handler onBugReceivedHandler = new Handler(new Callback() { @Override public boolean handleMessage(Message msg) { boolean fromCache = msg.getData().getBoolean(BugIntentService.FROM_CACHE); if (fromCache) { Toast.makeText(getActivity(), "Bug from cache", Toast.LENGTH_SHORT).show(); } mBug = (Bug) msg.getData().getSerializable(BugIntentService.BUG); bindBug(); return false; } }); @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt(BUG_ID, mBugId); outState.putString(BUG_TITLE, mBugTitle); outState.putSerializable(BUG, mBug); } @Override public void onCheckedChanged(RadioGroup group, int checkedId) { switch (checkedId) { case R.id.bugTabDetails: mViewPager.setCurrentItem(0); break; case R.id.bugTabComments: mViewPager.setCurrentItem(1); break; case R.id.bugTabAttachments: mViewPager.setCurrentItem(2); break; case R.id.bugTabCcs: mViewPager.setCurrentItem(3); break; } } @Override public void onPageScrollStateChanged(int arg0) { } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageSelected(int position) { if (getSherlockActivity() instanceof BugActivity) { ((BugActivity) getSherlockActivity()).onPageSelected(position); } if (mBugTabs != null) { switch (position) { case 0: mBugTabs.check(R.id.bugTabDetails); break; case 1: mBugTabs.check(R.id.bugTabComments); break; case 2: mBugTabs.check(R.id.bugTabAttachments); break; case 3: mBugTabs.check(R.id.bugTabCcs); break; } } } private class BugFragmentPager extends FragmentPagerAdapter { public BugFragmentPager(FragmentActivity activity) { super(getChildFragmentManager()); } @Override public int getCount() { return 4; } @Override public Fragment getItem(int position) { if (position == 0) { return BugDetailsFragment.newInstance(mBug); } else if (position == 1) { return BugCommentsFragment.newInstance(mBug); } else if (position == 2) { return BugAttachmentsFragment.newInstance(mBug); } else if (position == 3) { return BugCcsFragment.newInstance(mBug); } return null; } } public void share() { if (mBug == null) { return; } Intent intent = new Intent(android.content.Intent.ACTION_SEND); intent.setType("text/plain"); String subject = "[" + mBug.product + "] " + mBug.bugId + " - " + mBug.summary; String body = mBug.toString(); intent.putExtra(android.content.Intent.EXTRA_SUBJECT, subject); intent.putExtra(android.content.Intent.EXTRA_TEXT, body); startActivity(intent); } public void fullscreen() { if (mBug != null) { Intent intent = BugMultiPaneActivity.getIntent(getActivity(), mBugId, mBugTitle); startActivity(intent); } } }