基于Android手機的手電筒程序的實現(xiàn)

第3章系統(tǒng)調(diào)試及運行3）SOS紅色界面如圖3.3所示。圖3.3SOS紅色界面4）開燈界面如圖3.4所示。圖3.4開燈界面沈陽航空航天大學(xué)課程設(shè)計報告參考文獻參考文獻[1]高凱等編著.Android程序設(shè)計基礎(chǔ)教程[M].北京：國防工業(yè)出版社，2015[2]韓超.Android系統(tǒng)原理及開發(fā)要點詳解[M].北京：電子工業(yè)出版社，2010[3]李魯群等編著.Android應(yīng)用程序設(shè)計[M].北京：清華大學(xué)出版社，2015[4]陳璟，陳平華，李文亮.Android內(nèi)核分析[J].廣東工業(yè)大學(xué)計算機學(xué)院實踐與經(jīng)驗，2009：112-115.[5]王翠萍編著.Android經(jīng)典項目開發(fā)實戰(zhàn)[M].北京：清華大學(xué)出版社，2015[6]吳亞峰等編著.Android應(yīng)用案例開發(fā)大全[M].北京：人民郵電出版社，2015[7]李魯群等編著.Android應(yīng)用程序設(shè)計[M].北京：清華大學(xué)出版社，2015[8]鄧文淵等.Android開發(fā)基礎(chǔ)教程[M].北京：人民郵電出版社，2014[9]郭志安.Android應(yīng)用開發(fā)詳解[M].北京：電子工業(yè)出版社，2010[10]楊豐盛.Android應(yīng)用開發(fā)揭秘[M].北京：科學(xué)出版社，2010[11]SatyaKomatineni,DaveMaclean.ProAndroid4[M].USA：Apress，2012沈陽航空航天大學(xué)課程設(shè)計報告附錄附錄MainActivity.java:packagecom.example;importjava.util.Timer;importjava.util.TimerTask;importandroid.app.Activity;importandroid.content.res.Resources;importandroid.graphics.drawable.Drawable;importandroid.hardware.Camera;importandroid.hardware.Camera.Parameters;importandroid.os.Bundle;importandroid.os.Handler;importandroid.os.Message;importandroid.util.Log;importandroid.view.Menu;importandroid.view.MenuItem;importandroid.view.View;importandroid.view.View.OnClickListener;importandroid.view.WindowManager;importandroid.widget.Button;publicclassMainActivityextendsActivity{ Timertimer; privateButtonloginButton; privateButtonloginButton1; privateButtonloginButton2; privatebooleanisopent=false; privatebooleanisopen=false; privateCameracamera; Handlerhandler=null;privatebooleanisopent1=false; privatebooleanm_sos_flag=false; @Override protectedvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); loginButton=(Button)findViewById(R.id.button1); loginButton1=(Button)findViewById(R.id.button2); loginButton2=(Button)findViewById(R.id.button3); //lp.screenBrightness=0.1f; loginButton.setOnClickListener(newOnClickListener(){ @Override publicvoidonClick(Viewv){ //TODOAuto-generatedmethodstub if(!isopent){camera=Camera.open();Parametersparams=camera.getParameters();params.setFlashMode(Parameters.FLASH_MODE_TORCH);camera.setParameters(params);camera.startPreview();//開始亮燈isopent=true;}else{camera.stopPreview();//關(guān)掉亮燈camera.release();//關(guān)掉照相機isopent=false;} } });//開燈的監(jiān)聽 loginButton1.setOnClickListener(newOnClickListener(){ @Override publicvoidonClick(Viewv){ //TODOAuto-generatedmethodstub if(!isopen){ WindowManager.LayoutParamswl=getWindow().getAttributes(); wl.screenBrightness=1; getWindow().setAttributes(wl); isopen=true; }else{ WindowManager.LayoutParamswl=getWindow().getAttributes(); wl.screenBrightness=3/4; getWindow().setAttributes(wl); isopen=false; } } });//屏幕背光的監(jiān)聽 loginButton2.setOnClickListener(newOnClickListener(){ @Override publicvoidonClick(Viewv){ //TODOAuto-generatedmethodstub if(!isopent1){ timer=newTimer(); timer.schedule(newTimerTask(){ @Override publicvoidrun(){ if(m_sos_flag){ Messagemessage=newMessage(); message.what=1; handler.sendMessage(message); m_sos_flag=false; isopent1=true; } else{ Messagemessage=newMessage(); message.what=0; handler.sendMessage(message); m_sos_flag=true; isopent1=true; } //isopent1=true; } },50,200); } else{ Messagemessage=newMessage(); message.what=3; handler.sendMessage(message); } } });//SOS handler=newHandler() { @Override publicvoidhandleMessage(Messagemsg){ //TODOAuto-generatedmethodstub switch(msg.what) { case1: Resourcesres=getResources();Drawabledrawable=res.getDrawable(R.drawable.bkcolor);MainActivity.this.findViewById(R.id.background).setBackgroundDrawable(drawable); break; case0: Resourcesres1=getResources(); Drawabledrawable1=res1.getDrawable(R.drawable.bkcolor1); MainActivity.this.findViewById(R.id.background).setBackgroundDrawable(drawable1); break; case3: timer.cancel(); isopent1=false; Resourcesres3=getResources();Drawabledrawable3=res3.getDrawable(R.drawable.bkcolor1);MainActivity.this.findViewById(R.id.background).setBackgroundDrawable(drawable3); break; } super.handleMessage(msg); } }; } @Override publicbooleanonCreateOptionsMenu(Menumenu){ //Inflatethemenu;thisaddsitemstotheactionbarifitispresent. getMenuInflater().inflate(R.menu.main,menu); returntrue; } @Override publicbooleanonOptionsItemSelected(MenuItemitem){ //Handleactionbaritemclickshere.Theactionbarwill //automaticallyhandleclicksontheHome/Upbutton,solong //asyouspecifyaparentactivityinAndroidManifest.xml. intid=item.getItemId(); if(id==R.id.action_settings){ returntrue; } returnsuper.onOptionsItemSelected(item); }AndriodManifest.xml:<?xmlversion="1.0"encoding="utf-8"?><manifestxmlns:android="/apk/res/android"package="com.example"android:versionCode="1"android:versionName="1.0"><uses-sdkandroid:minSdkVersion="15"android:targetSdkVersion="21"/><applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme"><activityandroid:name=".MainActivity"android:label="@string/app_name"><intent-filter><actionandroid:name="ent.action.MAIN"/><categoryandroid:name="ent.category.LAUNCHER"/></intent-filter></activity></application><!--攝像頭、手電筒--><uses-permissionandroid:name="android.permission.CAMERA"/><uses-permissionandroid:name="android.permission.FLASHLIGHT"/><uses-featureandroid:name="android.hardware.camera"/><uses-featureandroid:name="android.hardware.camera.autofocus"/><uses-featureandroid:name="android.hardware.camera.flash"/></manifest>activity_main_xml:<RelativeLayoutxmlns:android="/apk/res/android"xmlns:tools="/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.MainActivity"android:id="@+id/background"><Buttonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignBottom="@+id/imageView1"android:layout_alignParentRight="true"android:background="@drawable/bj_2"android:text="@string/pmbg"/><Buttonandroid:id="@+id/button3"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignBottom="@+id/imageView1"android:layout_alignLeft="@+