Java tutorial
/* * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * * This file is part of FileExplorer. * * FileExplorer 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. * * FileExplorer 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 SwiFTP. If not, see <http://www.gnu.org/licenses/>. */ package com.ape.filemanager; import java.util.ArrayList; import android.app.ActionBar; import android.app.ActionBar.Tab; import android.app.Activity; import android.app.Fragment; import android.app.FragmentTransaction; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Configuration; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v13.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.text.TextUtils; import android.util.Log; import android.view.ActionMode; import android.view.View; import android.view.ActionMode.Callback; import com.ape.cloudfile.CloudFileActivity; import com.ape.cloudfile.CloudFileUtil; import com.ape.filemanager.search.FileManagerSearchActivity; public class FileExplorerTabActivityOld extends Activity implements IActionTabListener { private static final String INSTANCESTATE_TAB = "tab"; private static final int DEFAULT_OFFSCREEN_PAGES = 2; private static final String TAG = "FileExplorerTabActivity"; ViewPager mViewPager; TabsAdapter mTabsAdapter; ActionMode mActionMode; ActionMode.Callback mActionCallback; MountPointManager mMountPointManager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_pager); mViewPager = (ViewPager) findViewById(R.id.pager); mViewPager.setOffscreenPageLimit(DEFAULT_OFFSCREEN_PAGES); mIsMyOsOptionMenuStyle = getResources().getBoolean(R.bool.myos_option_menu_style); final ActionBar bar = getActionBar(); bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE | ActionBar.DISPLAY_SHOW_HOME); mTabsAdapter = new TabsAdapter(this, mViewPager); mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_category), FileCategoryActivityMyOS.class, null); mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_sd), FileViewActivity.class, null); if (getResources().getBoolean(R.bool.have_cloud_file)) { mTabsAdapter.addTab(bar.newTab().setText(R.string.cloud_storage), CloudFileActivity.class, null); } else { mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_remote), ServerControlActivity.class, null); } int tabIndex; Intent intent = getIntent(); String action = intent.getAction(); if (getIntent().getData() != null) { tabIndex = Util.SDCARD_TAB_INDEX; } else if (!TextUtils.isEmpty(action)) { if (action.equals(Intent.ACTION_PICK) || action.equals(Intent.ACTION_GET_CONTENT) || action.equals("com.mediatek.filemanager.ADD_FILE")) { tabIndex = Util.CATEGORY_TAB_INDEX; } else if (action.equals(CloudFileUtil.CLOUD_STORAGE_ACTION)) { tabIndex = Util.REMOTE_TAB_INDEX; } else { tabIndex = Util.CATEGORY_TAB_INDEX; } } else { tabIndex = Util.CATEGORY_TAB_INDEX; //For market require. // tabIndex = PreferenceManager.getDefaultSharedPreferences(this) // .getInt(INSTANCESTATE_TAB, Util.CATEGORY_TAB_INDEX); } bar.setSelectedNavigationItem(tabIndex); mMountPointManager = MountPointManager.getInstance(); mMountPointManager.init(this); } @Override protected void onPause() { super.onPause(); SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(this).edit(); editor.putInt(INSTANCESTATE_TAB, getActionBar().getSelectedNavigationIndex()); editor.commit(); } @Override public void onConfigurationChanged(Configuration newConfig) { if (getActionBar().getSelectedNavigationIndex() == Util.CATEGORY_TAB_INDEX) { FileCategoryActivityMyOS categoryFragement = (FileCategoryActivityMyOS) mTabsAdapter .getItem(Util.CATEGORY_TAB_INDEX); if (categoryFragement.isHomePage()) { reInstantiateCategoryTab(); } else { categoryFragement.setConfigurationChanged(true); } } super.onConfigurationChanged(newConfig); } public void reInstantiateCategoryTab() { mTabsAdapter.destroyItem(mViewPager, Util.CATEGORY_TAB_INDEX, mTabsAdapter.getItem(Util.CATEGORY_TAB_INDEX)); mTabsAdapter.instantiateItem(mViewPager, Util.CATEGORY_TAB_INDEX); } @Override public void onBackPressed() { IBackPressedListener backPressedListener = (IBackPressedListener) mTabsAdapter .getItem(mViewPager.getCurrentItem()); if (!backPressedListener.onBack()) { super.onBackPressed(); } } public interface IBackPressedListener { /** * ?back * @return True: ??; False: ?? */ boolean onBack(); } @Override public void setActionMode(ActionMode actionMode) { mActionMode = actionMode; } @Override public ActionMode startActionMode(ActionMode.Callback callback) { mActionCallback = callback; return super.startActionMode(callback); } @Override public ActionMode getActionMode() { return mActionMode; } @Override public Callback getActionModeCallback() { return mActionCallback; } @Override public void onTabChanged() { Fragment fragment = getFragment(mViewPager.getCurrentItem()); if (fragment instanceof CloudFileActivity) { ((CloudFileActivity) fragment).onFragementResume(); } } @Override public View getActionModeCustomView() { return null; } public Fragment getFragment(int tabIndex) { return mTabsAdapter.getItem(tabIndex); } /** * This is a helper class that implements the management of tabs and all * details of connecting a ViewPager with associated TabHost. It relies on a * trick. Normally a tab host has a simple API for supplying a View or * Intent that each tab will show. This is not sufficient for switching * between pages. So instead we make the content part of the tab host * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy * view to show as the tab content. It listens to changes in tabs, and takes * care of switch to the correct paged in the ViewPager whenever the selected * tab changes. */ public static class TabsAdapter extends FragmentPagerAdapter implements ActionBar.TabListener, ViewPager.OnPageChangeListener { private final Context mContext; private final ActionBar mActionBar; private final ViewPager mViewPager; private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>(); static final class TabInfo { private final Class<?> clss; private final Bundle args; private Fragment fragment; TabInfo(Class<?> _class, Bundle _args) { clss = _class; args = _args; } } public TabsAdapter(Activity activity, ViewPager pager) { super(activity.getFragmentManager()); mContext = activity; mActionBar = activity.getActionBar(); mViewPager = pager; mViewPager.setAdapter(this); mViewPager.setOnPageChangeListener(this); } public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) { TabInfo info = new TabInfo(clss, args); tab.setTag(info); tab.setTabListener(this); mTabs.add(info); mActionBar.addTab(tab); notifyDataSetChanged(); } @Override public int getCount() { return mTabs.size(); } @Override public Fragment getItem(int position) { TabInfo info = mTabs.get(position); if (info.fragment == null) { info.fragment = Fragment.instantiate(mContext, info.clss.getName(), info.args); } return info.fragment; } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { mActionBar.setSelectedNavigationItem(position); } @Override public void onPageScrollStateChanged(int state) { } @Override public void onTabSelected(Tab tab, FragmentTransaction ft) { Object tag = tab.getTag(); for (int i = 0; i < mTabs.size(); i++) { if (mTabs.get(i) == tag) { mViewPager.setCurrentItem(i); } } //if(!tab.getText().equals(mContext.getString(R.string.tab_sd))) { ActionMode actionMode = ((IActionTabListener) mContext).getActionMode(); if (actionMode != null) { actionMode.finish(); } //} ((IActionTabListener) mContext).onTabChanged(); } @Override public void onTabUnselected(Tab tab, FragmentTransaction ft) { } @Override public void onTabReselected(Tab tab, FragmentTransaction ft) { } } public void startSearchActivity(String path) { Intent intent = new Intent(); intent.setClass(this, FileManagerSearchActivity.class); intent.putExtra(FileManagerSearchActivity.CURRENT_PATH, path); intent.putExtra(FileManagerSearchActivity.IS_FROM_FILEMANAGER, true); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); } public static boolean mIsFromSearch = false; public static String mSearchPath = null; private void setDefaultTabView() { if (mIsFromSearch && mSearchPath != null) { ActionBar bar = getActionBar(); bar.setSelectedNavigationItem(Util.SDCARD_TAB_INDEX); Log.i(TAG, "setDefaultTabIndex, fromSearch:" + mIsFromSearch + ", path: " + mSearchPath); FileViewActivity fileView = (FileViewActivity) getFragment(Util.SDCARD_TAB_INDEX); if (fileView.getContext() != null) { fileView.setPath(mSearchPath); } mIsFromSearch = false; mSearchPath = null; } } @Override protected void onResume() { super.onResume(); setDefaultTabView(); Log.i(TAG, "onResume"); } public MountPointManager getMountManager() { return mMountPointManager; } public void sendFilesToCloud(ArrayList<FileInfo> filesList) { CloudFileActivity cloudFile = (CloudFileActivity) getFragment(Util.REMOTE_TAB_INDEX); if (cloudFile.selectFolderToUploadFiles(filesList)) { switchToPage(Util.REMOTE_TAB_INDEX); } } public void switchToPage(int whichTab) { ActionBar bar = getActionBar(); if (bar != null && whichTab < bar.getTabCount()) { bar.setSelectedNavigationItem(whichTab); } } private boolean mIsMyOsOptionMenuStyle = false; public boolean isMyOsOptionMenuStyle() { return mIsMyOsOptionMenuStyle; } }