Java tutorial
/** * Copyright 2017 kubotaku1119 <kubotaku1119@gmail.com> * <p/> * 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 * <p/> * http://www.apache.org/licenses/LICENSE-2.0 * <p/> * 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 com.kubotaku.android.code4kyoto5374.fragments; import android.content.Context; import android.graphics.Color; import android.os.AsyncTask; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.GridView; import android.widget.TextView; import android.widget.Toast; import com.kubotaku.android.code4kyoto5374.R; import com.kubotaku.android.code4kyoto5374.data.GarbageType; import com.kubotaku.android.code4kyoto5374.segregation.GarbageSegregationData; import com.kubotaku.android.code4kyoto5374.segregation.GarbageSegregationType; import com.kubotaku.android.code4kyoto5374.segregation.GarbageSegregator; import java.util.ArrayList; import java.util.List; import io.realm.Realm; /** * ?Fragment */ public class SegregationFragment extends Fragment { public static final String TAG = SegregationFragment.class.getSimpleName(); public static SegregationFragment newInstance() { SegregationFragment fragment = new SegregationFragment(); Bundle args = new Bundle(); fragment.setArguments(args); return fragment; } public SegregationFragment() { // Required empty public constructor } private OnFragmentTaskListener onFragmentTaskListener; private List<GarbageSegregationData> matchGarbageList = new ArrayList<>(); private SegregationViewAdapter segregationViewAdapter; private EditText inputTarget; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment return inflater.inflate(R.layout.fragment_seregration, container, false); } @Override public void onAttach(Context context) { super.onAttach(context); if (context instanceof OnFragmentTaskListener) { onFragmentTaskListener = (OnFragmentTaskListener) context; } } @Override public void onDetach() { super.onDetach(); onFragmentTaskListener = null; } @Override public void onStart() { super.onStart(); setupViews(); } private void setupViews() { View view = getView(); GridView gridView = (GridView) view.findViewById(R.id.segregation_grid); segregationViewAdapter = new SegregationViewAdapter(); gridView.setAdapter(segregationViewAdapter); inputTarget = (EditText) view.findViewById(R.id.segregation_edit_target); Button btnSearch = (Button) view.findViewById(R.id.segregation_btn_search); btnSearch.setOnClickListener(onClickSearchBtnListener); } private View.OnClickListener onClickSearchBtnListener = new View.OnClickListener() { @Override public void onClick(View view) { new SegregationTask().execute(); } }; private GarbageSegregator segregator; private class SegregationTask extends AsyncTask<Void, Void, List<GarbageSegregationData>> { private String inputText; public SegregationTask() { if (onFragmentTaskListener != null) { onFragmentTaskListener.onTaskStart(); } inputText = inputTarget.getText().toString(); } @Override protected List<GarbageSegregationData> doInBackground(Void... voids) { if (segregator == null) { segregator = new GarbageSegregator(); } return segregator.findCandidates(inputText); } @Override protected void onPostExecute(List<GarbageSegregationData> candidates) { if (onFragmentTaskListener != null) { onFragmentTaskListener.onTaskStop(); } matchGarbageList.clear(); if (candidates != null) { matchGarbageList.addAll(candidates); } else { Toast toast = Toast.makeText(getContext(), R.string.message_missing_match_garbage, Toast.LENGTH_LONG); toast.setGravity(Gravity.CENTER, 0, 0); toast.show(); } segregationViewAdapter.notifyDataSetChanged(); } } // ------------------------------------- private static class ViewHolder { TextView name; TextView note; TextView type1; TextView type2; TextView type3; TextView type4; } private class SegregationViewAdapter extends BaseAdapter { @Override public int getCount() { return matchGarbageList.size(); } @Override public GarbageSegregationData getItem(int i) { if (i < matchGarbageList.size()) { return matchGarbageList.get(i); } return null; } @Override public long getItemId(int i) { return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { holder = new ViewHolder(); final LayoutInflater inflater = getActivity().getLayoutInflater(); final View view = inflater.inflate(R.layout.garbage_segregation_view, parent, false); holder.name = (TextView) view.findViewById(R.id.segregation_text_name); holder.note = (TextView) view.findViewById(R.id.segregation_text_note); holder.type1 = (TextView) view.findViewById(R.id.segregation_type_1); holder.type2 = (TextView) view.findViewById(R.id.segregation_type_2); holder.type3 = (TextView) view.findViewById(R.id.segregation_type_3); holder.type4 = (TextView) view.findViewById(R.id.segregation_type_4); convertView = view; convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } final GarbageSegregationData data = getItem(position); if (data != null) { holder.name.setText(data.name); holder.note.setText(data.note); Context context = getContext(); holder.type1.setText(null); holder.type1.setBackgroundColor(Color.TRANSPARENT); GarbageSegregationType type1 = data.getType(0); if (type1 != null) { holder.type1.setText(GarbageType.getTypeText(type1.type)); holder.type1.setTextColor(GarbageType.getViewTextColor(context, type1.type)); holder.type1.setBackgroundColor(GarbageType.getViewColor(context, type1.type)); } holder.type2.setText(null); holder.type2.setBackgroundColor(Color.TRANSPARENT); GarbageSegregationType type2 = data.getType(1); if (type2 != null) { holder.type2.setText(GarbageType.getTypeText(type2.type)); holder.type2.setTextColor(GarbageType.getViewTextColor(context, type2.type)); holder.type2.setBackgroundColor(GarbageType.getViewColor(context, type2.type)); } holder.type3.setText(null); holder.type3.setBackgroundColor(Color.TRANSPARENT); holder.type3.setVisibility(View.GONE); GarbageSegregationType type3 = data.getType(2); if (type3 != null) { holder.type3.setVisibility(View.VISIBLE); holder.type3.setText(GarbageType.getTypeText(type3.type)); holder.type3.setTextColor(GarbageType.getViewTextColor(context, type3.type)); holder.type3.setBackgroundColor(GarbageType.getViewColor(context, type3.type)); } holder.type4.setText(null); holder.type4.setBackgroundColor(Color.TRANSPARENT); holder.type4.setVisibility(View.GONE); GarbageSegregationType type4 = data.getType(3); if (type4 != null) { holder.type4.setVisibility(View.VISIBLE); holder.type4.setText(GarbageType.getTypeText(type4.type)); holder.type4.setTextColor(GarbageType.getViewTextColor(context, type4.type)); holder.type4.setBackgroundColor(GarbageType.getViewColor(context, type4.type)); } } return convertView; } } }