单片机与接口技术课外制作Android蓝牙遥控小车编程参考

PAGE2/26《单片机与接口技术》课外制作（课程设计）编程参考（1）Android蓝牙遥控程序设计邹立杰广州大学华软软件学院软件工程系2014。5.22ConfigurationtheDevelopmentEnvironment：Downloadandinstall/configurationJavaSDKSEYoucanseekmethodsfrominternet.specially，youneedconfigurationthesystemenvironmentvariable“path".DownloadandInstallAndroidDevelopmentIDEDownloadthepackage:adt-bundle—windows—x86_64-20140321.zipfromtheURL:HYPERLINK”http：///sdk/index。html”http：///sdk/index.htmldownloadwebpage:Unpackagedthepackageadt—bundle—windows—x86_64-20140321。ziptoadirectoryonyourharddisk。 Ok,yourandroiddevelopmentenvironmentisok！CtreateaVirtualDeviceforYourAndroidApplication：starteclipseapplicationbydoubleclicktheexecutablefile:Theapplicationwindow：Selectthemenuitemasbelow:TheappeartheAVDmanagerdialog:Clickthe“New”button：FilltheAVDnameasyoulikename；Selectadevice；SelectaTarget;SelectaCPU/ABI;Selectaskin；Anydefaultitemyoucanselect。Thereferenceselectasbelow:Whenthebelowdialogappeared，youeAVDiscreatedok。StarttheAVD：Don’tclosetheAVD,KeeptheAVDalived!DesignYourCarBlue—teethRemoteProgram（1）CreateanAndroidApplicationProject:Fillthedialogitems:theclickthe“Next”buttonClickthe“Next”Button:Clickthe“Next”buttonAndcontinuetoclickthe“Next”button：Click“Finish”button，yourandroidapplicationprojectiscreated!ProjectFilesStruchure：ModifytheAndroidManifest。xmlfile:<manifestxmlns:android="http：///apk/res/android"package=”com。example.blue"android:versionCode="1"android:versionName="1.0"〉<uses—sdkandroid:minSdkVersion="8"android：targetSdkVersion=”15"/〉 <uses-permissionandroid:name="android.permission。BLUETOOTH_ADMIN”/> <uses-permissionandroid：name=”android。permission。BLUETOOTH"/>〈applicationandroid:icon=”@drawable/ic_launcher”android:label=”＠string/app_name”android：theme=”@style/AppTheme”〉<activityandroid:name=".MainActivity”android:label="＠string/title_activity_main"><intent—filter>〈actionandroid:name="ent.action.MAIN”/><categoryandroid：name="ent.category.LAUNCHER”/〉〈/intent—filter〉〈/activity></application>〈/manifest〉Add2sentencestotheAndroidManifest.xmlfile。Modifythelayoutfileactivity_main.xml〈？xmlversion="1.0"encoding="utf-8”?〉〈AbsoluteLayoutandroid：id=”@+id/widget0”android:layout_width="fill_parent"android:layout_height=”fill_parent"xmlns:android=”/apk/res/android"android:background=”@drawable/sise”〉<Buttonandroid:id="@+id/btnF"android:layout_width="88dp”android：layout_height=”wrap_content"android:layout_x=”124dp”android：layout_y=”58dp”android:text="向前"/><Buttonandroid:id=”@+id/btnS”android:layout_width="88dp"android:layout_height=”wrap_content"android:layout_x=”124dp"android：layout_y=”140dp"android:text="停止"/>〈Buttonandroid：id="@+id/btnB”android：layout_width="88dp"android：layout_height="wrap_content"android:layout_x="124dp”android：layout_y=”222dp”android：text="后退”/>〈Buttonandroid：id=”＠+id/btnR"android:layout_width="88dp”android：layout_height="wrap_content”android：layout_x="227dp”android：layout_y="140dp”android：text=”右转”/>〈Buttonandroid：id="@+id/btnL"android：layout_width="88dp"android：layout_height=”wrap_content”android:layout_x=”23dp”android：layout_y=”140dp”android：text=”左转”/〉〈/AbsoluteLayout〉Modifytheresurcefilestrings。xml〈resources><stringname="app_name”>蓝牙小车遥控—华软学院</string>〈stringname=”hello_world"〉Helloworld！</string〉<stringname=”menu_settings”〉Settings</string>〈stringname="title_activity_main">蓝牙小车遥控-华软学院</string>〈/resources>ModifytheMainActivityfileMainActivity。javapackagecom。example。blue;importandroid.os。Bundle;importandroid。app。Activity；importandroid.view.Menu;importjava。io.IOException;importjava.io.OutputStream;importjava.util。UUID;importandroid。bluetooth。BluetoothAdapter;importandroid。bluetooth。BluetoothDevice；importandroid.bluetooth.BluetoothSocket;importandroid.view.Gravity；importandroid.view.MotionEvent;importandroid.view。View;importandroid。widget.Button；importandroid。widget。Toast；importcom。example。blue.R；publicclassMainActivityextendsActivity｛privateBluetoothAdaptermBluetoothAdapter=null；privateBluetoothSocketbtSocket=null;privateOutputStreamoutStream=null;ButtonmButtonF；ButtonmButtonB;ButtonmButtonL；ButtonmButtonR;ButtonmButtonS;privatestaticfinalUUIDMY_UUID=UUID。fromString（"00001101—0000-1000-8000—00805F9B34FB”）；privatestaticStringaddress="20:14：04:15:12:46”;//蓝牙设备MAC地址@OverridepublicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState）；setContentView(R.layout.activity_main）；//前进mButtonF=（Button)findViewById（R。id.btnF)；mButtonF.setOnTouchListener(newButton。OnTouchListener（）{ publicbooleanonTouch(Viewv，MotionEventevent）{ //TODOAuto—generatedmethodstub Stringmessage； byte［]msgBuffer; intaction=event.getAction（)； switch(action) { caseMotionEvent.ACTION_DOWN： try{ outStream=btSocket.getOutputStream()； ｝catch（IOExceptione）{ ｝ message="1”； msgBuffer=message.getBytes（)； try｛ outStream.write(msgBuffer）; }catch（IOExceptione)｛} break； caseMotionEvent。ACTION_UP： try｛ outStream=btSocket.getOutputStream（）； }catch（IOExceptione){｝ message=”0”； msgBuffer=message。getBytes(); try{ outStream。write（msgBuffer); }catch（IOExceptione)｛} break; } returnfalse； ｝ ｝);//后退mButtonB=(Button)findViewById(R.id。btnB)；mButtonB.setOnTouchListener（newButton。OnTouchListener（）{ publicbooleanonTouch（Viewv，MotionEventevent）｛ //TODOAuto-generatedmethodstub Stringmessage; byte[］msgBuffer； intaction=event.getAction（）; switch（action） ｛ caseMotionEvent.ACTION_DOWN: try｛ outStream=btSocket.getOutputStream(); }catch(IOExceptione）｛｝ message=”3"; msgBuffer=message。getBytes(）; try｛ outStream。write(msgBuffer); }catch(IOExceptione）{} break； caseMotionEvent。ACTION_UP： try{ outStream=btSocket。getOutputStream（）； }catch（IOExceptione){} message=”0"; msgBuffer=message.getBytes（）; try｛ outStream.write（msgBuffer）； ｝catch（IOExceptione)｛} break； ｝ returnfalse； }｝）;//左转mButtonL=（Button）findViewById(R.id。btnL）;mButtonL。setOnTouchListener(newButton.OnTouchListener(）{ publicbooleanonTouch（Viewv,MotionEventevent)｛ //TODOAuto-generatedmethodstub Stringmessage； byte［]msgBuffer； intaction=event.getAction()； switch（action） ｛ caseMotionEvent.ACTION_DOWN： try{ outStream=btSocket。getOutputStream(）; ｝catch（IOExceptione）{｝ message="2"; msgBuffer=message.getBytes（）； try｛ outStream.write(msgBuffer); }catch(IOExceptione){} break; caseMotionEvent.ACTION_UP: try｛ outStream=btSocket。getOutputStream（）; ｝catch（IOExceptione）{｝ message=”0"； msgBuffer=message。getBytes（); try｛ outStream。write(msgBuffer)； }catch(IOExceptione）{｝ break； } returnfalse； ｝}）;//右转mButtonR=(Button)findViewById(R.id.btnR）；mButtonR.setOnTouchListener(newButton.OnTouchListener（){ publicbooleanonTouch(Viewv,MotionEventevent）｛ //TODOAuto-generatedmethodstub Stringmessage; byte[]msgBuffer; intaction=event.getAction(）； switch(action） { caseMotionEvent。ACTION_DOWN： try｛ outStream=btSocket。getOutputStream(); }catch（IOExceptione）{} message=”4"； msgBuffer=message。getBytes（)； try｛ outStream.write（msgBuffer）; ｝catch(IOExceptione){｝ break； caseMotionEvent。ACTION_UP： try｛ outStream=btSocket.getOutputStream（); ｝catch(IOExceptione）｛｝ message="0”； msgBuffer=message.getBytes（）； try｛ outStream.write（msgBuffer）; }catch（IOExceptione)｛} break; ｝ returnfalse; ｝｝）;//停止mButtonS=(Button)findViewById（R。id.btnS）；mButtonS.setOnTouchListener（newButton。OnTouchListener（){ publicbooleanonTouch(Viewv，MotionEventevent){ //TODOAuto—generatedmethodstub if（event.getAction（)==MotionEvent.ACTION_DOWN) try{ outStream=btSocket.getOutputStream（）；}catch(IOExceptione）{｝Stringmessage="0"；byte［]msgBuffer=message。getBytes（）；try{ outStream。write(msgBuffer)；}catch(IOExceptione）{}returnfalse; }｝)；mBluetoothAdapter=BluetoothAdapter.getDefaultAdapter（）;if（mBluetoothAdapter==null){ Toast。makeText（this,"蓝牙设备不可用,请打开蓝牙！”，Toast.LENGTH_LONG).show()；finish()；return;｝if(!mBluetoothAdapter.isEnabled()){Toast。makeText(this,"请打开蓝牙并重新运行程序！”，Toast。LENGTH_LONG).show（）;finish(）；return；}}publicvoidonStart()｛super.onStart（）；}＠OverridepublicvoidonResume(）{super.onResume();DisplayToast（”正在尝试连接智能小车,请稍后····”)；BluetoothDevicedevice=mBluetoothAdapter.getRemoteDevice（address）；try{ btSocket=device.createRfcommSocketToServiceRecord(MY_UUID)；}catch(IOExceptione){DisplayToast（”套接字创建失败！")；}DisplayToast（"成功连接智能小车！可以开始操控了～～～"）;mBluetoothAdapter.cancelDiscovery();try{ btSocket。connect（）; DisplayToast(”连接成功建立,数据连接打开！”）;｝catch（IOExceptione){