Java tutorial
/* * MIT License * * Copyright (c) 2016. Dmytro Karataiev * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * */ package com.adkdevelopment.simpleflashlightadfree.ui; import android.content.Intent; import android.content.res.AssetFileDescriptor; import android.graphics.Color; import android.graphics.drawable.AnimationDrawable; import android.graphics.drawable.ColorDrawable; import android.media.MediaPlayer; import android.os.Bundle; import android.os.Handler; import android.support.annotation.Nullable; import android.support.v4.content.ContextCompat; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import com.adkdevelopment.simpleflashlightadfree.service.FlashlightService; import com.adkdevelopment.simpleflashlightadfree.R; import com.adkdevelopment.simpleflashlightadfree.utils.Utility; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.Unbinder; /** * Created by karataev on 2/22/16. */ public class EmergencyFragment extends android.support.v4.app.Fragment { private static final String TAG = EmergencyFragment.class.getSimpleName(); private int status; MediaPlayer mMediaPlayer; @BindView(R.id.button_image) ImageView mButtonImage; @BindView(R.id.flashlight_mode) TextView mStatusText; @BindView(R.id.layout) LinearLayout mLinearLayout; private Unbinder mUnbinder; public EmergencyFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (savedInstanceState != null) { status = savedInstanceState.getInt(FlashlightService.STATUS); if (status != FlashlightService.STATUS_OFF) { Intent intent = new Intent(getActivity().getApplication(), FlashlightService.class); intent.putExtra(FlashlightService.STATUS, status); getActivity().getApplication().startService(intent); } } else { status = FlashlightService.STATUS_OFF; } } @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_main, container, false); mUnbinder = ButterKnife.bind(this, rootView); // check status and use correct image Utility.setSwitchColor(mStatusText, mButtonImage, status); mButtonImage.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // Start service on click if (status == FlashlightService.STATUS_OFF) { status = FlashlightService.STATUS_BLINK; } else { status = FlashlightService.STATUS_OFF; } emergencySignal(); Intent intent = new Intent(getActivity().getApplication(), FlashlightService.class); // Set button drawable Utility.setSwitchColor(mStatusText, mButtonImage, status); intent.putExtra(FlashlightService.STATUS, status); getActivity().getApplication().startService(intent); } }); return rootView; } @Override public void onDestroyView() { super.onDestroyView(); mUnbinder.unbind(); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); // Save status on rotate, possibly will remove rotation in the future outState.putInt(FlashlightService.STATUS, status); } /** * Starts emergency sound from assets */ public void emergencySignal() { try { if (mMediaPlayer != null && mMediaPlayer.isPlaying() && status == FlashlightService.STATUS_OFF) { mMediaPlayer.stop(); mMediaPlayer.reset(); mMediaPlayer.release(); mMediaPlayer = null; mLinearLayout.setBackgroundColor(ContextCompat.getColor(getContext(), R.color.colorBackground)); } else if (status == FlashlightService.STATUS_BLINK) { final AnimationDrawable drawable = new AnimationDrawable(); final Handler handler = new Handler(); drawable.addFrame(new ColorDrawable(Color.RED), 400); drawable.addFrame(new ColorDrawable(Color.BLUE), 400); drawable.setOneShot(false); mLinearLayout.setBackground(drawable); handler.postDelayed(new Runnable() { @Override public void run() { drawable.start(); } }, 100); mMediaPlayer = new MediaPlayer(); AssetFileDescriptor descriptor = getActivity().getAssets().openFd("sews.mp3"); mMediaPlayer.setDataSource(descriptor.getFileDescriptor(), descriptor.getStartOffset(), descriptor.getLength()); descriptor.close(); mMediaPlayer.prepare(); mMediaPlayer.setVolume(1f, 1f); mMediaPlayer.setLooping(true); mMediaPlayer.start(); } } catch (Exception e) { e.printStackTrace(); } } }