Java tutorial
/* * FlightIntel for Pilots * * Copyright 2012 Nadeem Hasan <nhasan@nadmm.com> * * This program 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. * * This program 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.nadmm.airports.wx; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.support.v4.content.LocalBroadcastManager; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.LinearLayout; import android.widget.Spinner; import android.widget.TextView; import com.nadmm.airports.FragmentBase; import com.nadmm.airports.ImageViewActivity; import com.nadmm.airports.R; public abstract class WxMapFragmentBase extends FragmentBase { private String mAction; private BroadcastReceiver mReceiver; private IntentFilter mFilter; private String[] mWxTypeCodes; private String[] mWxTypeNames; private String[] mWxMapCodes; private String[] mWxMapNames; private String mLabel; private String mTitle; private String mHelpText; private View mPendingRow; private Spinner mSpinner; public WxMapFragmentBase(String action, String[] mapCodes, String[] mapNames) { mAction = action; mWxMapCodes = mapCodes; mWxMapNames = mapNames; mWxTypeCodes = null; mWxTypeNames = null; } public WxMapFragmentBase(String action, String[] mapCodes, String[] mapNames, String[] typeCodes, String[] typeNames) { mAction = action; mWxMapCodes = mapCodes; mWxMapNames = mapNames; mWxTypeCodes = typeCodes; mWxTypeNames = typeNames; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(false); mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(mAction)) { String type = intent.getStringExtra(NoaaService.TYPE); if (type.equals(NoaaService.TYPE_IMAGE)) { showWxMap(intent); } } } }; mFilter = new IntentFilter(); mFilter.addAction(mAction); } @Override public void onResume() { mPendingRow = null; LocalBroadcastManager bm = LocalBroadcastManager.getInstance(getActivity()); bm.registerReceiver(mReceiver, mFilter); super.onResume(); } @Override public void onPause() { LocalBroadcastManager bm = LocalBroadcastManager.getInstance(getActivity()); bm.unregisterReceiver(mReceiver); super.onPause(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflate(R.layout.wx_map_detail_view); if (mLabel != null && mLabel.length() > 0) { TextView tv = (TextView) v.findViewById(R.id.wx_map_label); tv.setText(mLabel); tv.setVisibility(View.VISIBLE); } if (mHelpText != null && mHelpText.length() > 0) { TextView tv = (TextView) v.findViewById(R.id.help_text); tv.setText(mHelpText); tv.setVisibility(View.VISIBLE); } OnClickListener listener = new OnClickListener() { @Override public void onClick(View v) { if (mPendingRow == null) { mPendingRow = v; String code = getMapCode(v); requestWxMap(code); } } }; LinearLayout layout = (LinearLayout) v.findViewById(R.id.wx_map_layout); for (int i = 0; i < mWxMapCodes.length; ++i) { View row = addProgressRow(layout, mWxMapNames[i]); row.setTag(mWxMapCodes[i]); row.setOnClickListener(listener); row.setBackgroundResource(R.drawable.row_selector_middle); } if (mWxTypeCodes != null) { TextView tv = (TextView) v.findViewById(R.id.wx_map_type_label); tv.setVisibility(View.VISIBLE); layout = (LinearLayout) v.findViewById(R.id.wx_map_type_layout); layout.setVisibility(View.VISIBLE); mSpinner = (Spinner) v.findViewById(R.id.map_type); ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_spinner_item, mWxTypeNames); adapter.setDropDownViewResource(R.layout.support_simple_spinner_dropdown_item); mSpinner.setAdapter(adapter); } return v; } private void requestWxMap(String code) { setProgressBarVisible(true); Intent service = getServiceIntent(); service.setAction(mAction); service.putExtra(NoaaService.TYPE, NoaaService.TYPE_IMAGE); service.putExtra(NoaaService.IMAGE_CODE, code); if (mSpinner != null) { int pos = mSpinner.getSelectedItemPosition(); service.putExtra(NoaaService.IMAGE_TYPE, mWxTypeCodes[pos]); } setServiceParams(service); getActivity().startService(service); } protected void setServiceParams(Intent intent) { } private void showWxMap(Intent intent) { String path = intent.getStringExtra(NoaaService.RESULT); if (path != null) { Intent view = new Intent(getActivity(), WxImageViewActivity.class); view.putExtra(ImageViewActivity.IMAGE_PATH, path); if (mTitle != null) { view.putExtra(ImageViewActivity.IMAGE_TITLE, mTitle); } else { view.putExtra(ImageViewActivity.IMAGE_TITLE, getActivity().getTitle()); } String code = intent.getStringExtra(NoaaService.IMAGE_CODE); String name = getDisplayText(code); if (name != null) { view.putExtra(ImageViewActivity.IMAGE_SUBTITLE, name); } startActivity(view); } else { mPendingRow = null; } setProgressBarVisible(false); } protected String getMapCode(View v) { return (String) v.getTag(); } protected String getDisplayText(String code) { for (int i = 0; i < mWxMapCodes.length; ++i) { if (code.equals(mWxMapCodes[i])) { return mWxMapNames[i]; } } return ""; } protected void setLabel(String label) { mLabel = label; } protected void setTitle(String title) { mTitle = title; } protected void setHelpText(String text) { mHelpText = text; } private void setProgressBarVisible(boolean visible) { if (mPendingRow != null) { View view = mPendingRow.findViewById(R.id.progress); view.setVisibility(visible ? View.VISIBLE : View.INVISIBLE); } } protected abstract Intent getServiceIntent(); }