Java tutorial
/* * Copyright (c) 2016. Guaidaodl * * 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 io.github.guaidaodl.pomodorotimer.ui.timer; import android.content.Context; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; import java.util.Locale; import butterknife.BindString; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.OnClick; import io.github.guaidaodl.pomodorotimer.R; import io.github.guaidaodl.pomodorotimer.service.PomodoroService; public class TimerFragment extends Fragment implements PomodoroService.TomatoStateListener { private static final String TAG = "TimerFragment"; private static final String INTIAL_TIME = "25:00"; @BindView(R.id.main_timer_control) Button mStartButton; @BindString(R.string.main_timer_start) String mStartText; @BindString(R.string.main_timer_stop) String mStopText; @BindView(R.id.main_timer_time) TextView mTimeTextView; @NonNull private String mCurrentTime = INTIAL_TIME; private TimerFragmentDelegate mDelegate; private boolean mTimerRunning = false; public static TimerFragment newInstance() { return new TimerFragment(); } public TimerFragment() { } //<editor-fold desc="Life Cycle"> @Override public void onAttach(Context context) { super.onAttach(context); try { mDelegate = (TimerFragmentDelegate) context; } catch (ClassCastException e) { throw new RuntimeException(context.toString() + " must implement TimerFragmentDelegate"); } } @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View root = inflater.inflate(R.layout.fragment_timer, container, false); ButterKnife.bind(this, root); mStartButton.setText(!mTimerRunning ? mStartText : mStopText); mTimeTextView.setText(mCurrentTime); return root; } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mDelegate.registerTomatoListener(this); } /** * Fragment ?? */ public void onDestroy() { super.onDestroy(); mDelegate.unregisterTomatoListener(this); } @Override public void onDetach() { super.onDetach(); if (mDelegate != null) { mDelegate = null; } } //</editor-fold> @OnClick(R.id.main_timer_control) public void onClickStartButton() { if (mTimerRunning) { // ? mTimerRunning = false; resetViews(); mDelegate.stopTomato(); } else { // mStartButton.setText(getContext().getString(R.string.main_timer_stop)); mDelegate.startNewTomato(); mTimerRunning = true; } } //<editor-fold desc="Implementation of TomatoStatListner"> @Override public void onTomatoStart() { mStartButton.setText(mStopText); mTimerRunning = true; } @Override public void onTomatoStop() { mTimerRunning = false; resetViews(); } @Override public void onTomatoComplete() { mTimerRunning = false; resetViews(); } private void resetViews() { mCurrentTime = INTIAL_TIME; mTimeTextView.setText(INTIAL_TIME); mStartButton.setText(mStartText); } @Override public void onTomatoTimeChange(int remainTime, int tomatoTime) { long minute = remainTime / 60; long second = remainTime % 60; @SuppressWarnings("deprecation") Locale locale = getResources().getConfiguration().locale; mCurrentTime = String.format(locale, "%02d:%02d", minute, second); mTimeTextView.setText(mCurrentTime); } //</editor-fold> public interface TimerFragmentDelegate { void startNewTomato(); void stopTomato(); void registerTomatoListener(PomodoroService.TomatoStateListener listener); void unregisterTomatoListener(PomodoroService.TomatoStateListener listener); } }