Java tutorial
/* LinkingBeaconListFragment.java Copyright (c) 2016 NTT DOCOMO,INC. Released under the MIT license http://opensource.org/licenses/mit-license.php */ package org.deviceconnect.android.deviceplugin.linking.setting.fragment; import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.CompoundButton; import android.widget.ListView; import android.widget.Switch; import android.widget.TextView; import org.deviceconnect.android.deviceplugin.linking.LinkingApplication; import org.deviceconnect.android.deviceplugin.linking.R; import org.deviceconnect.android.deviceplugin.linking.beacon.LinkingBeaconManager; import org.deviceconnect.android.deviceplugin.linking.beacon.LinkingBeaconUtil; import org.deviceconnect.android.deviceplugin.linking.beacon.data.LinkingBeacon; import org.deviceconnect.android.deviceplugin.linking.linking.LinkingUtil; import org.deviceconnect.android.deviceplugin.linking.setting.LinkingBeaconActivity; import org.deviceconnect.android.deviceplugin.linking.setting.LinkingInductionActivity; import org.deviceconnect.android.deviceplugin.linking.setting.fragment.dialog.ConfirmationDialogFragment; public class LinkingBeaconListFragment extends Fragment implements ConfirmationDialogFragment.OnDialogEventListener, LinkingBeaconManager.OnBeaconConnectListener, LinkingBeaconManager.OnBeaconScanStateListener { private static final String TAG_DELETE_BEACON = "delete_beacon"; private static final String TAG_ERROR_BEACON = "error_beacon"; private ListAdapter mAdapter; private LinkingBeacon mLinkingBeacon; public static LinkingBeaconListFragment newInstance() { return new LinkingBeaconListFragment(); } @Override public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) { mAdapter = new ListAdapter(getActivity(), -1); final View root = inflater.inflate(R.layout.fragment_linking_beacon_list, container, false); ListView listView = (ListView) root.findViewById(R.id.fragment_beacon_list_view); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { DeviceItem item = (DeviceItem) view.getTag(); if (item != null) { transitionBeaconControl(item); } } }); listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { confirmDeleteBeacon(mAdapter.getItem(position).mDevice); return true; } }); listView.setAdapter(mAdapter); Switch switchBtn = (Switch) root.findViewById(R.id.fragment_beacon_scan_switch); if (switchBtn != null) { switchBtn.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(final CompoundButton buttonView, final boolean isChecked) { if (isChecked) { getLinkingBeaconManager().startForceBeaconScan(); } else { getLinkingBeaconManager().stopForceBeaconScan(); } } }); switchBtn.setChecked(getLinkingBeaconManager().isStartedForceBeaconScan()); } return root; } @Override public void onResume() { super.onResume(); refresh(); if (getView() != null) { Switch switchBtn = (Switch) getView().findViewById(R.id.fragment_beacon_scan_switch); if (switchBtn != null) { switchBtn.setEnabled(LinkingUtil.isApplicationInstalled(getContext())); } } LinkingApplication app = (LinkingApplication) getActivity().getApplication(); LinkingBeaconManager mgr = app.getLinkingBeaconManager(); mgr.addOnBeaconConnectListener(this); mgr.addOnBeaconScanStateListener(this); } @Override public void onPause() { LinkingApplication app = (LinkingApplication) getActivity().getApplication(); LinkingBeaconManager mgr = app.getLinkingBeaconManager(); mgr.removeOnBeaconConnectListener(this); mgr.removeOnBeaconScanStateListener(this); super.onPause(); } @Override public void onPositiveClick(final DialogFragment fragment) { String tag = fragment.getTag(); if (TAG_ERROR_BEACON.equals(tag)) { transitionLinkingApp(); } else if (TAG_DELETE_BEACON.equals(tag)) { LinkingApplication app = (LinkingApplication) getActivity().getApplication(); LinkingBeaconManager mgr = app.getLinkingBeaconManager(); mgr.removeBeacon(mLinkingBeacon); refresh(); } } @Override public void onNegativeClick(final DialogFragment fragment) { } @Override public void onConnected(final LinkingBeacon beacon) { refresh(); } @Override public void onDisconnected(final LinkingBeacon beacon) { refresh(); } @Override public void onScanState(final LinkingBeaconUtil.ScanState state, final LinkingBeaconUtil.ScanDetail detail) { if (state != LinkingBeaconUtil.ScanState.RESULT_OK || detail != LinkingBeaconUtil.ScanDetail.DETAIL_OK) { String message; switch (detail) { case DETAIL_TIMEOUT: message = getString(R.string.linking_beacon_scan_detail_timeout); break; case DETAIL_META_DATA_NONE: message = getString(R.string.linking_beacon_scan_detail_meta_data_none); break; case DETAIL_BT_DISABLED: message = getString(R.string.linking_beacon_scan_detail_bt_disabled); break; case DETAIL_SDA_DISABLED: message = getString(R.string.linking_beacon_scan_detail_sda_disabled); break; case DETAIL_PERMISSION_DENIED: message = getString(R.string.linking_beacon_scan_detail_permission_denied); break; default: message = "Unknown"; break; } showErrorDialog(message); } } private void refresh() { if (getActivity() == null) { return; } getActivity().runOnUiThread(new Runnable() { @Override public void run() { mAdapter.clear(); mAdapter.notifyDataSetChanged(); LinkingApplication app = (LinkingApplication) getActivity().getApplication(); LinkingBeaconManager mgr = app.getLinkingBeaconManager(); View view = getView(); if (view != null) { ListView listView = (ListView) view.findViewById(R.id.fragment_beacon_list_view); for (LinkingBeacon device : mgr.getLinkingBeacons()) { DeviceItem item = new DeviceItem(); item.mDevice = device; mAdapter.add(item); } listView.setAdapter(mAdapter); } } }); } private void transitionLinkingApp() { Intent intent = new Intent(); intent.setClass(getActivity(), LinkingInductionActivity.class); startActivity(intent); } private void transitionBeaconControl(final DeviceItem item) { if (item.mDevice.isOnline()) { Intent intent = new Intent(); intent.putExtra(LinkingBeaconActivity.EXTRA_ID, item.mDevice.getExtraId()); intent.putExtra(LinkingBeaconActivity.VENDOR_ID, item.mDevice.getVendorId()); intent.setClass(getActivity(), LinkingBeaconActivity.class); getActivity().startActivity(intent); } else { String message; LinkingApplication app = (LinkingApplication) getActivity().getApplication(); if (app.getLinkingBeaconManager().isScanState()) { message = getString(R.string.fragment_beacon_error_message, item.mDevice.getDisplayName()); } else { message = getString(R.string.fragment_beacon_error_message_not_start_beacon_scan); } showErrorDialog(message); } } private void confirmDeleteBeacon(final LinkingBeacon beacon) { mLinkingBeacon = beacon; String title = getString(R.string.activity_beacon_delete_dialog_title); String message = getString(R.string.activity_beacon_delete_dialog_message, beacon.getDisplayName()); String positive = getString(R.string.activity_beacon_delete_dialog_positive); String negative = getString(R.string.activity_beacon_delete_dialog_negative); ConfirmationDialogFragment fragment = ConfirmationDialogFragment.newInstance(title, message, positive, negative, this); fragment.show(getFragmentManager(), TAG_DELETE_BEACON); } private void showErrorDialog(final String message) { String title = getString(R.string.fragment_beacon_error_title); String positive = getString(R.string.fragment_beacon_error_positive); String negative = getString(R.string.fragment_beacon_error_negative); ConfirmationDialogFragment dialog = ConfirmationDialogFragment.newInstance(title, message, positive, negative, this); dialog.show(getFragmentManager(), TAG_ERROR_BEACON); } private LinkingBeaconManager getLinkingBeaconManager() { LinkingApplication app = (LinkingApplication) getActivity().getApplication(); return app.getLinkingBeaconManager(); } private class ListAdapter extends ArrayAdapter<DeviceItem> { public ListAdapter(final Context context, final int textViewId) { super(context, textViewId); } @Override public View getView(final int position, View convertView, final ViewGroup parent) { if (convertView == null) { LayoutInflater inflater = (LayoutInflater) getActivity() .getSystemService(Context.LAYOUT_INFLATER_SERVICE); convertView = inflater.inflate(R.layout.item_linking_device, null); } DeviceItem item = getItem(position); String deviceName = item.mDevice.getDisplayName(); TextView textView = (TextView) convertView.findViewById(R.id.item_device_name); textView.setText(deviceName); TextView statusView = (TextView) convertView.findViewById(R.id.item_device_status); if (item.mDevice.isOnline()) { textView.setTextColor(Color.BLACK); statusView.setText(getString(R.string.fragment_device_status_online)); statusView.setTextColor(Color.BLACK); } else { textView.setTextColor(Color.GRAY); statusView.setText(getString(R.string.fragment_device_status_offline)); statusView.setTextColor(Color.GRAY); } convertView.setTag(item); return convertView; } } private class DeviceItem { LinkingBeacon mDevice; } }