Java tutorial
/* * Copyright 2017 Thomas Andres * * This file is part of Kandroid. * * Kandroid 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. * * Kandroid 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 Foobar. If not, see <http://www.gnu.org/licenses/>. */ package in.andres.kandroid.ui; import android.content.Intent; import android.os.Bundle; import android.support.annotation.Nullable; 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.ExpandableListView; import java.util.Hashtable; import in.andres.kandroid.Constants; import in.andres.kandroid.ProjectTaskAdapter; import in.andres.kandroid.R; import in.andres.kandroid.kanboard.KanboardColumn; import in.andres.kandroid.kanboard.KanboardProject; import in.andres.kandroid.kanboard.KanboardTask; public class ProjectTasksFragment extends Fragment { KanboardColumn mColumn; public ProjectTasksFragment() { } public static ProjectTasksFragment newInstance(KanboardColumn column) { ProjectTasksFragment fragment = new ProjectTasksFragment(); Bundle args = new Bundle(); args.putSerializable("column", column); fragment.setArguments(args); return fragment; } @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_expandable_list, container, false); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (((MainActivity) getActivity()).getProject() != null) { assert getView() != null : "ProjectTaskFragment: getView() returned null"; getView().findViewById(R.id.fragment_dash_errortext).setVisibility(View.GONE); getView().findViewById(R.id.expandable_list).setVisibility(View.VISIBLE); mColumn = (KanboardColumn) getArguments().getSerializable("column"); ProjectTaskAdapter listAdapter = new ProjectTaskAdapter(getContext(), ((MainActivity) getActivity()).getProject(), ((MainActivity) getActivity()).getProject().getGroupedActiveTasks().get(mColumn.getId()), true); ((ExpandableListView) getView().findViewById(R.id.expandable_list)).setAdapter(listAdapter); for (int i = 0; i < listAdapter.getGroupCount(); i++) ((ExpandableListView) getView().findViewById(R.id.expandable_list)).expandGroup(i); ((ExpandableListView) getView().findViewById(R.id.expandable_list)) .setOnChildClickListener(new ExpandableListView.OnChildClickListener() { @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { Log.i(Constants.TAG, "Launching TaskDetailActivity from ProjectTasksFragment."); MainActivity mainActivity = (MainActivity) getActivity(); if (childPosition == parent.getExpandableListAdapter().getChildrenCount(groupPosition) - 1) { Intent intent = new Intent(getContext(), TaskEditActivity.class); intent.putExtra("columnid", mColumn.getId()); intent.putExtra("projectid", ((MainActivity) getActivity()).getProject().getId()); intent.putExtra("swimlaneid", ((MainActivity) getActivity()).getProject() .getSwimlanes().get(groupPosition).getId()); intent.putExtra("projectusers", (Hashtable<Integer, String>) mainActivity.getProject().getProjectUsers()); startActivityForResult(intent, Constants.RequestEditTask); return true; } KanboardProject project = ((MainActivity) getActivity()).getProject(); KanboardTask clickedTask = project.getGroupedActiveTasks().get(mColumn.getId()) .get(project.getSwimlanes().get(groupPosition).getId()).get(childPosition); Intent taskIntent = new Intent(getContext(), TaskDetailActivity.class); taskIntent.putExtra("task", clickedTask); taskIntent.putExtra("me", ((MainActivity) getActivity()).getMe()); taskIntent.putExtra("column", mColumn); taskIntent.putExtra("swimlane", project.getSwimlanes().get(groupPosition)); if (clickedTask.getCategoryId() > 0) taskIntent.putExtra("category", project.getCategoryHashtable().get(clickedTask.getCategoryId())); startActivityForResult(taskIntent, Constants.RequestEditTask); return true; } }); } else { assert getView() != null : "ProjectTaskFragment: getView() returned null"; getView().findViewById(R.id.fragment_dash_errortext).setVisibility(View.VISIBLE); getView().findViewById(R.id.expandable_list).setVisibility(View.GONE); } } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == Constants.RequestEditTask && resultCode == Constants.ResultChanged) ((MainActivity) getActivity()).refresh(); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); } @Override public void onViewStateRestored(@Nullable Bundle savedInstanceState) { super.onViewStateRestored(savedInstanceState); } @Override public void onResume() { super.onResume(); assert getView() != null : "ProjectTaskFragment: getView() returned null"; ExpandableListView lv = (ExpandableListView) getView().findViewById(R.id.expandable_list); for (int i = 0; i < lv.getExpandableListAdapter().getGroupCount(); i++) lv.expandGroup(i); } }