Java tutorial
/* * Copyright 2011 Google Inc. * * 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 * * http://www.apache.org/licenses/LICENSE-2.0 * * 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.goliathonline.android.kegbot.ui; import com.goliathonline.android.kegbot.provider.KegbotContract; import com.goliathonline.android.kegbot.util.AnalyticsUtils; import com.goliathonline.android.kegbot.util.BitmapUtils; import com.goliathonline.android.kegbot.util.NotifyingAsyncQueryHandler; import com.goliathonline.android.kegbot.util.UnitUtils; import com.goliathonline.android.kegbot.R; import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.graphics.Bitmap; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.Fragment; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; /** * A fragment used in {@link HomeActivity} that shows either a countdown, 'now playing' link to * current sessions, or 'thank you' text, at different times (before/during/after the conference). * It also shows a 'Realtime Search' button on phones, as a replacement for the * {@link TagStreamFragment} that is visible on tablets on the home screen. */ public class WhatsOnFragment extends Fragment implements NotifyingAsyncQueryHandler.AsyncQueryListener { private ViewGroup mRootView; private Uri mTapUri; private NotifyingAsyncQueryHandler mHandler; private final static String DEGREES = "\u00b0"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mTapUri = KegbotContract.Taps.CONTENT_URI; mHandler = new NotifyingAsyncQueryHandler(getActivity().getContentResolver(), this); mHandler.startQuery(TapsQuery._TOKEN, mTapUri, TapsQuery.PROJECTION); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { mRootView = (ViewGroup) inflater.inflate(R.layout.fragment_whats_on, container); refresh(); return mRootView; } @Override public void onAttach(Activity activity) { super.onAttach(activity); } @Override public void onDetach() { super.onDetach(); } private void refresh() { mRootView.removeAllViews(); if (false) { //!UIUtils.isHoneycombTablet(getActivity()) View separator = new View(getActivity()); separator.setLayoutParams(new ViewGroup.LayoutParams(1, ViewGroup.LayoutParams.FILL_PARENT)); separator.setBackgroundResource(R.drawable.whats_on_separator); mRootView.addView(separator); View view = getActivity().getLayoutInflater().inflate(R.layout.whats_on_stream, mRootView, false); view.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { AnalyticsUtils.getInstance(getActivity()).trackEvent("Home Screen Dashboard", "Click", "Realtime Stream", 0); Intent intent = new Intent(getActivity(), TagStreamActivity.class); startActivity(intent); } }); mRootView.addView(view); } } public void onQueryComplete(int token, Object cookie, Cursor cursor) { if (getActivity() == null) { return; } if (token == TapsQuery._TOKEN) { onTapQueryComplete(cursor); } else { if (cursor != null) cursor.close(); } } private void onTapQueryComplete(Cursor cursor) { if (cursor == null) return; else if (cursor.getCount() == 0) return; final LayoutInflater inflater = getActivity().getLayoutInflater(); final View onTapView = inflater.inflate(R.layout.whats_on_tap, mRootView, false); final TextView onTapTitleView = (TextView) onTapView.findViewById(R.id.on_tap); final TextView onTapSubTitleView = (TextView) onTapView.findViewById(R.id.whats_on_subtitle); final ProgressBar kegProgress = (ProgressBar) onTapView.findViewById(R.id.kegProgress); final ImageView tapImage = (ImageView) onTapView.findViewById(R.id.tap_image); final TextView degreesText = (TextView) onTapView.findViewById(R.id.temperature); cursor.moveToFirst(); final String tapImageUrl = cursor.getString(TapsQuery.IMAGE_URL); if (!TextUtils.isEmpty(tapImageUrl)) { BitmapUtils.fetchImage(getActivity(), tapImageUrl, null, null, new BitmapUtils.OnFetchCompleteListener() { public void onFetchComplete(Object cookie, Bitmap result) { if (result != null) { tapImage.setImageBitmap(result); } } }); } onTapTitleView.setText(cursor.getString(TapsQuery.BEER_NAME)); final Double mlRemain = cursor.getDouble(TapsQuery.VOL_REMAIN); final String pintsRemain = UnitUtils.mlToPint(Double.toString(mlRemain)); final Double mlTotal = cursor.getDouble(TapsQuery.VOL_SIZE); final Double mlPoured = mlTotal - mlRemain; final String pintsPoured = UnitUtils.mlToPint(Double.toString(mlPoured)); final Double lastTemp = cursor.getDouble(TapsQuery.LAST_TEMP); final String temperature = UnitUtils.cToF(Double.toString(lastTemp)); onTapSubTitleView.setText("Pints Poured: " + pintsPoured + " (" + pintsRemain + " remain)"); kegProgress.setProgressDrawable(getResources().getDrawable(R.drawable.progress)); kegProgress.setProgress((int) cursor.getDouble(TapsQuery.PERCENT_FULL)); degreesText.setText(temperature + DEGREES); cursor.close(); mRootView.addView(onTapView); } private interface TapsQuery { int _TOKEN = 0x1; String[] PROJECTION = { KegbotContract.Taps.BEER_NAME, KegbotContract.Taps.PERCENT_FULL, KegbotContract.Taps.VOL_REMAIN, KegbotContract.Taps.VOL_SIZE, KegbotContract.Taps.LAST_TEMP, KegbotContract.Taps.LAST_TEMP_TIME, KegbotContract.Taps.IMAGE_URL, }; int BEER_NAME = 0; int PERCENT_FULL = 1; int VOL_REMAIN = 2; int VOL_SIZE = 3; int LAST_TEMP = 4; int LAST_TEMP_TIME = 5; int IMAGE_URL = 6; } }