Java tutorial
/* * Copyright (C) 2014 Vlad Mihalachi * * This file is part of Text Editor 8000. * * Text Editor 8000 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. * * Text Editor 8000 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/>. */ package com.maskyn.fileeditorpro.activity; import android.content.Intent; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.support.v4.view.MenuItemCompat; import android.support.v7.app.ActionBarActivity; import android.support.v7.widget.SearchView; import android.support.v7.widget.Toolbar; import android.text.TextUtils; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.Filter; import android.widget.ListView; import android.widget.PopupMenu; import android.widget.TextView; import android.widget.Toast; import com.faizmalkani.floatingactionbutton.FloatingActionButton; import com.spazedog.lib.rootfw4.RootFW; import org.apache.commons.io.FileUtils; import org.apache.commons.io.FilenameUtils; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Arrays; import java.util.Comparator; import java.util.LinkedList; import com.maskyn.fileeditorpro.R; import com.maskyn.fileeditorpro.adapter.AdapterDetailedList; import com.maskyn.fileeditorpro.dialogfragment.EditTextDialog; import com.maskyn.fileeditorpro.preferences.PreferenceHelper; import com.maskyn.fileeditorpro.util.AlphanumComparator; import com.maskyn.fileeditorpro.util.Build; import com.maskyn.fileeditorpro.util.ThemeUtils; public class SelectFileActivity extends ActionBarActivity implements SearchView.OnQueryTextListener, AdapterView.OnItemClickListener, EditTextDialog.EditDialogListener { private String currentFolder; private ListView listView; private boolean wantAFile = true; private MenuItem mSearchViewMenuItem; private SearchView mSearchView; private Filter filter; private int prevposition = 0; private FloatingActionButton mFab; private boolean mfabOkMode = false; private File selectedFile; private boolean folderOpenMode = false; @Override protected void onCreate(Bundle savedInstanceState) { currentFolder = PreferenceHelper.defaultFolder(this); ThemeUtils.setTheme(this); super.onCreate(savedInstanceState); setContentView(R.layout.activity_select_file); Toolbar toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); //final Actions action = (Actions) getIntent().getExtras().getSerializable("action"); wantAFile = true; //action == Actions.SelectFile; mfabOkMode = false; folderOpenMode = getIntent().getBooleanExtra("foldermode", false); if (folderOpenMode) setTitle("Open Folder"); listView = (ListView) findViewById(android.R.id.list); listView.setOnItemClickListener(this); listView.setTextFilterEnabled(true); mFab = (FloatingActionButton) findViewById(R.id.fabbutton); mFab.setColor(getResources().getColor(R.color.fab_light)); mFab.setDrawable(getResources().getDrawable(R.drawable.ic_fab_add)); mFab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (!mfabOkMode) { PopupMenu popup = new PopupMenu(SelectFileActivity.this, v); popup.getMenuInflater().inflate(R.menu.popup_new_file, popup.getMenu()); popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { int i = item.getItemId(); if (i == R.id.im_new_file) { EditTextDialog.newInstance(EditTextDialog.Actions.NewFile) .show(getFragmentManager().beginTransaction(), "dialog"); return true; } else if (i == R.id.im_new_folder) { EditTextDialog.newInstance(EditTextDialog.Actions.NewFolder) .show(getFragmentManager().beginTransaction(), "dialog"); return true; } else { return false; } } }); popup.show(); } if (mfabOkMode) { finishWithResult(selectedFile); } } }); mFab.listenTo(listView); String lastNavigatedPath = PreferenceHelper.getWorkingFolder(this); File file = new File(lastNavigatedPath); if (!file.exists()) { PreferenceHelper.setWorkingFolder(this, PreferenceHelper.defaultFolder(this)); file = new File(PreferenceHelper.defaultFolder(this)); } new UpdateList().execute(file.getAbsolutePath()); } @Override public void onBackPressed() { if (currentFolder.isEmpty() || currentFolder.equals("/")) { finish(); } else { File file = new File(currentFolder); String parentFolder = file.getParent(); new UpdateList().execute(parentFolder); } } public boolean onQueryTextChange(String newText) { if (filter == null) return true; if (TextUtils.isEmpty(newText)) { filter.filter(null); } else { filter.filter(newText); } return true; } public boolean onQueryTextSubmit(String query) { return false; } /** * Finish this Activity with a result code and URI of the selected file. * * @param file The file selected. */ private void finishWithResult(File file) { if (file != null) { Uri uri = Uri.fromFile(file); //Toast.makeText(this, uri.toString(), Toast.LENGTH_SHORT).show(); setResult(RESULT_OK, new Intent().setData(uri)); finish(); } else { setResult(RESULT_CANCELED); finish(); } } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { final String name = ((TextView) view.findViewById(android.R.id.text1)).getText().toString(); if (name.equals("..")) { if (currentFolder.equals("/")) { new UpdateList().execute(PreferenceHelper.getWorkingFolder(this)); } else { File tempFile = new File(currentFolder); if (tempFile.isFile()) { tempFile = tempFile.getParentFile().getParentFile(); } else { tempFile = tempFile.getParentFile(); } new UpdateList().execute(tempFile.getAbsolutePath()); } if (mfabOkMode) { prevposition = 0; mfabOkMode = false; mFab.setDrawable(getResources().getDrawable(R.drawable.ic_fab_add)); } return; } else if (name.equals(getString(R.string.home))) { new UpdateList().execute(PreferenceHelper.getWorkingFolder(this)); Toast.makeText(this, "test", Toast.LENGTH_SHORT).show(); if (mfabOkMode) { prevposition = 0; mfabOkMode = false; mFab.setDrawable(getResources().getDrawable(R.drawable.ic_fab_add)); } return; } //final File selectedFile = new File(currentFolder, name); selectedFile = new File(currentFolder, name); if (!folderOpenMode) { if (selectedFile.isFile() && wantAFile) { if (prevposition == position) finishWithResult(selectedFile); else { prevposition = position; mfabOkMode = true; mFab.setDrawable(getResources().getDrawable(R.drawable.ic_fab_ok)); view.setSelected(true); } } else if (selectedFile.isDirectory()) { //Toast.makeText(this, "its folder", Toast.LENGTH_SHORT).show(); if (mfabOkMode) { prevposition = 0; mfabOkMode = false; mFab.setDrawable(getResources().getDrawable(R.drawable.ic_fab_add)); } new UpdateList().execute(selectedFile.getAbsolutePath()); } } else if (folderOpenMode) { if (selectedFile.isDirectory()) { if (prevposition == position) { new UpdateList().execute(selectedFile.getAbsolutePath()); if (mfabOkMode) { prevposition = 0; mfabOkMode = false; mFab.setDrawable(getResources().getDrawable(R.drawable.ic_fab_add)); } } else { prevposition = position; mfabOkMode = true; mFab.setDrawable(getResources().getDrawable(R.drawable.ic_fab_ok)); view.setSelected(true); } } else if (selectedFile.isFile()) { } } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_select_file, menu); mSearchViewMenuItem = menu.findItem(R.id.im_search); mSearchView = (SearchView) MenuItemCompat.getActionView(mSearchViewMenuItem); mSearchView.setIconifiedByDefault(true); mSearchView.setOnQueryTextListener(this); mSearchView.setSubmitButtonEnabled(false); return super.onCreateOptionsMenu(menu); } @Override public boolean onPrepareOptionsMenu(Menu menu) { // menu items MenuItem imSetAsWorkingFolder = menu.findItem(R.id.im_set_as_working_folder); MenuItem imIsWorkingFolder = menu.findItem(R.id.im_is_working_folder); MenuItem imSelectFolder = menu.findItem(R.id.im_select_folder); if (imSetAsWorkingFolder != null) { // set the imSetAsWorkingFolder visible only if the two folder dont concide imSetAsWorkingFolder .setVisible(!currentFolder.equals(PreferenceHelper.getWorkingFolder(SelectFileActivity.this))); } if (imIsWorkingFolder != null) { // set visible is the other is invisible imIsWorkingFolder.setVisible(!imSetAsWorkingFolder.isVisible()); } if (imSelectFolder != null) { imSelectFolder.setVisible(!wantAFile); } return super.onPrepareOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { int i = item.getItemId(); if (i == android.R.id.home) { finish(); return true; } else if (i == R.id.im_set_as_working_folder) { PreferenceHelper.setWorkingFolder(SelectFileActivity.this, currentFolder); invalidateOptionsMenu(); return true; } else if (i == R.id.im_is_working_folder) { Toast.makeText(getBaseContext(), R.string.is_the_working_folder, Toast.LENGTH_SHORT).show(); return true; } else if (i == R.id.im_select_folder) { finishWithResult(new File(currentFolder)); return true; } return super.onOptionsItemSelected(item); } @Override public void onEdittextDialogEnded(final String inputText, final String hint, final EditTextDialog.Actions actions) { if (actions == EditTextDialog.Actions.NewFile && !TextUtils.isEmpty(inputText)) { File file = new File(currentFolder, inputText); try { file.createNewFile(); finishWithResult(file); } catch (IOException e) { Toast.makeText(SelectFileActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show(); } } else if (actions == EditTextDialog.Actions.NewFolder && !TextUtils.isEmpty(inputText)) { File file = new File(currentFolder, inputText); file.mkdirs(); new UpdateList().execute(currentFolder); } } public enum Actions { SelectFile, SelectFolder } private class UpdateList extends AsyncTask<String, Void, LinkedList<AdapterDetailedList.FileDetail>> { String exceptionMessage; @Override protected void onPreExecute() { super.onPreExecute(); if (mSearchView != null) { mSearchView.setIconified(true); MenuItemCompat.collapseActionView(mSearchViewMenuItem); mSearchView.setQuery("", false); } } /** * {@inheritDoc} */ @Override protected LinkedList<AdapterDetailedList.FileDetail> doInBackground(final String... params) { try { final String path = params[0]; if (TextUtils.isEmpty(path)) { return null; } File tempFolder = new File(path); if (tempFolder.isFile()) { tempFolder = tempFolder.getParentFile(); } String[] unopenableExtensions = { "apk", "mp3", "mp4", "png", "jpg", "jpeg" }; final LinkedList<AdapterDetailedList.FileDetail> fileDetails = new LinkedList<>(); final LinkedList<AdapterDetailedList.FileDetail> folderDetails = new LinkedList<>(); currentFolder = tempFolder.getAbsolutePath(); if (!tempFolder.canRead()) { if (RootFW.connect()) { com.spazedog.lib.rootfw4.utils.File folder = RootFW.getFile(currentFolder); com.spazedog.lib.rootfw4.utils.File.FileStat[] stats = folder.getDetailedList(); if (stats != null) { for (com.spazedog.lib.rootfw4.utils.File.FileStat stat : stats) { if (stat.type().equals("d")) { folderDetails.add(new AdapterDetailedList.FileDetail(stat.name(), getString(R.string.folder), "")); } else if (!FilenameUtils.isExtension(stat.name().toLowerCase(), unopenableExtensions) && stat.size() <= Build.MAX_FILE_SIZE * FileUtils.ONE_KB) { final long fileSize = stat.size(); //SimpleDateFormat format = new SimpleDateFormat("MMM dd, yyyy hh:mm a"); //String date = format.format(""); fileDetails.add(new AdapterDetailedList.FileDetail(stat.name(), FileUtils.byteCountToDisplaySize(fileSize), "")); } } } } } else { File[] files = tempFolder.listFiles(); Arrays.sort(files, getFileNameComparator()); if (files != null) { for (final File f : files) { if (f.isDirectory()) { folderDetails.add(new AdapterDetailedList.FileDetail(f.getName(), getString(R.string.folder), "")); } else if (f.isFile() && !FilenameUtils.isExtension(f.getName().toLowerCase(), unopenableExtensions) && FileUtils.sizeOf(f) <= Build.MAX_FILE_SIZE * FileUtils.ONE_KB) { final long fileSize = f.length(); SimpleDateFormat format = new SimpleDateFormat("MMM dd, yyyy hh:mm a"); String date = format.format(f.lastModified()); fileDetails.add(new AdapterDetailedList.FileDetail(f.getName(), FileUtils.byteCountToDisplaySize(fileSize), date)); } } } } folderDetails.addAll(fileDetails); return folderDetails; } catch (Exception e) { exceptionMessage = e.getMessage(); return null; } } /** * {@inheritDoc} */ @Override protected void onPostExecute(final LinkedList<AdapterDetailedList.FileDetail> names) { if (names != null) { boolean isRoot = currentFolder.equals("/"); AdapterDetailedList mAdapter = new AdapterDetailedList(getBaseContext(), names, isRoot); listView.setAdapter(mAdapter); filter = mAdapter.getFilter(); } if (exceptionMessage != null) { Toast.makeText(SelectFileActivity.this, exceptionMessage, Toast.LENGTH_SHORT).show(); } invalidateOptionsMenu(); super.onPostExecute(names); } public final Comparator<File> getFileNameComparator() { return new AlphanumComparator() { /** * {@inheritDoc} */ @Override public String getTheString(Object obj) { return ((File) obj).getName().toLowerCase(); } }; } } }