导入闭包与权限申明

导入闭包

其中包括
1.新大陆闭包：用于连接新大陆云平台，通过底层硬件设备获取数据，并上传至云平台，移动端端通过此闭包，连接云平台，实时获取数据
2.Google推出的MaterialDesign API
3.MPAndroidChar:绘制折线图等

implementation project(path: ":nlecloud-sdk")    implementation "com.google.android.material:material:1.1.0-alpha09"    implementation "com.getbase:floatingactionbutton:1.10.1"    implementation "com.google.android.material:material:1.0.0"    implementation "com.github.PhilJay:MPAndroidChart:v3.1.0"

申明权限

因为要与获取云平台数据，所有申明网络权限

网络安全问题

问题描述

Google表示，为保证用户数据和设备的安全，针对下一代 Android 系统(Android P) 的应用程序，将要求默认使用加密连接，这意味着 Android P 将禁止 App 使用所有未加密的连接，因此运行 Android P 系统的安卓设备无论是接收或者发送流量，未来都不能明码传输，需要使用下一代(Transport Layer Security)传输层安全协议，而 Android Nougat 和 Oreo 则不受影响。

解决方案

在Android Studio，res目录下创建一个xml包，再在xml包内创建一个network_security_config.xml文件（文件名自定义）
res->xml->network_security_config.xml
代码如下：

然后在清单文件中引用

 android:networkSecurityConfig="@xml/network_security_config"

Activity

WelComeActvity

效果图

描述

右上角按钮数字从5开始倒计时，采用Handler异步通信实现，到0时，自动跳转到登录界面，代码如下：

Handler handler = new Handler(  ){        @Override        public void handleMessage(@NonNull Message msg) {            super.handleMessage( msg );            if (msg.what == 0 && Flag) {                int Count = CountDown();                btn_Skip.setText( "跳过 " + Count );                handler.sendEmptyMessageDelayed( 0,1000 );            }        }    };

代码

代码中Flag用于Handler倒计时未结束，点击按钮进行跳转，异步通信未结束，防止再次渲染

** * Author:FranzLiszt * Completion time:9-20*/public class WelComeActivity extends AppCompatActivity {    private Button btn_Skip,GetInto;    private int TotalNumber = 5;    /*用于点击跳过或者进入应用按钮之后，界面发生跳转，但线程并未停止，时间到达，仍会重新渲染一次，    使用此标志，用来控制不执行异步介绍的信息，从此达到中断的效果*/    private boolean Flag = true;    Handler handler = new Handler(  ){        @Override        public void handleMessage(@NonNull Message msg) {            super.handleMessage( msg );            if (msg.what == 0 && Flag) {                int Count = CountDown();                btn_Skip.setText( "跳过 " + Count );                handler.sendEmptyMessageDelayed( 0,1000 );            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate( savedInstanceState );        if (Build.VERSION.SDK_INT >= 21) {            View decorView = getWindow().getDecorView();            decorView.setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE );            getWindow().setStatusBarColor( Color.TRANSPARENT );        }        setContentView( R.layout.activity_wel_come );        InitView();    }    /*5s之后自动跳转*/    private void InitView(){        btn_Skip = findViewById( R.id.btn_Skip );        GetInto = findViewById( R.id.GetInto);        handler.sendEmptyMessageDelayed( 0,1000 );    }    private int CountDown(){        if (TotalNumber -- == 1){            ReturnActivity(LoginActivity.class);        }        return TotalNumber;    }    public void Skip(View view) {        Flag = false;        ReturnActivity(LoginActivity.class);    }    public void GetIntoApp(View view) {        Flag = false;        ReturnActivity(LoginActivity.class);    }    private void ReturnActivity(Class Activity){        startActivity( new Intent( WelComeActivity.this,Activity ) );    }}

LoginActivity

效果图

描述

UI部分采用Google的MD组件库，此处省略，代码部分，主要获取用户输入的账户、密码传输给云平台进行匹配，如果密码正确，服务器会返回一个AccessToken（访问令牌）JSON数据，然后我们进行反序列化，使用此令牌进行后续操作

代码

获取AccessToken之后，通过SharedPreferences封装类SP进行保存(SP封装类在另一篇博文中有详细解锁，此处省略

https://editor.csdn.net/md/?articleId=120434977

public class LoginActivity extends AppCompatActivity {    private EditText mUserName,mPassWord;    private String AccessToken = "";    private SP sp;    private NetWorkBusiness business;    private Context context = null;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate( savedInstanceState );        if (Build.VERSION.SDK_INT >= 21) {            View decorView = getWindow().getDecorView();            decorView.setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE );            getWindow().setStatusBarColor( Color.TRANSPARENT );        }        setContentView( R.layout.activity_login );        InitView();    }    private void InitView(){        mUserName = findViewById( R.id.username );        mPassWord = findViewById( R.id.password );        if (context == null){            context = LoginActivity.this;        }    }    private void LoginMethod(){        String UserName = mUserName.getText().toString().trim();        String PassWord = mPassWord.getText().toString().trim();        if (TextUtils.isEmpty( UserName )){            Toast.makeText( context,"UserName cannot be empty",Toast.LENGTH_SHORT ).show();            return;        }        if (TextUtils.isEmpty( PassWord )){            Toast.makeText( context,"PassWord cannot be empty",Toast.LENGTH_SHORT ).show();            return;        }        business = new NetWorkBusiness( AccessToken, Param.URL );        business.signIn( new SignIn( UserName, PassWord ), new NCallBack>(getApplicationContext()) {            @Override            protected void onResponse(BaseResponseEntity response) {            }            @Override            public void onResponse(Call> call, Response> response) {                super.onResponse( call, response );                BaseResponseEntity body = response.body();                if (body != null && body.getStatus() == 0){                    sp = new SP( context );                    AccessToken = body.getResultObj().getAccessToken();                    /*将AccessToken存入sp*/                    sp.PutData( context,"AccessToken",AccessToken );                    ReturnActivity(MainActivity.class);                    Toast.makeText( context,"Login Success",Toast.LENGTH_SHORT ).show();                }else {                    Toast.makeText( context,"Login Fail",Toast.LENGTH_SHORT ).show();                }            }            @Override            public void onFailure(Call> call, Throwable t) {                super.onFailure( call, t );                Toast.makeText( context,"Exception",Toast.LENGTH_SHORT ).show();            }        } );    }    /*标题栏返回按钮*/    public  void Exit(View view){        ReturnActivity(WelComeActivity.class);    }    /*登录按钮*/    public  void Login(View view){        LoginMethod();    }    private void ReturnActivity(Class Activity){        startActivity( new Intent( context,Activity ) );    }}

MainActivity

效果图

描述

顶部两个圆形进度条会根据传入的数据，发生相对应变化
样式变化规则如下：

• 设置最多排队20个人，超过20人会实时显示，但不会联动触发样式效果
• 10人及以下外圆弧与文字为绿色
• 11-20人外圆弧与文字为紫色
• 大于20及，外圆弧与文字为红色
  中间输入框为语音模块，输入的字符串，会通过云平台传入底层设备，底层设备会相对应语音播报相关内容
  点击取消排队之后，所有功能置灰，不起作用，唯有排队按钮可以使用，反之，排队中，其余按钮均可使用，唯独排队按钮不可使用

代码

/** * Author:FranzLiszt * Function:排队叫号 * Tips:设置最多排队20个人，超过20人会实时显示，但不会联动触发样式效果 * 10人及以下外圆弧与文字为绿色 * 11-20人外圆弧与文字为紫色 * 大于20及，外圆弧与文字为红色 * 硬件没有限制，软件限制人数*//** * 核心思想： * 取号：获取一个号码，开始排队 * 叫号：当前方排队人数小于3时，系统提示请前往现场办理业务，无需进行排队，所有功能置灰*/public class MainActivity extends AppCompatActivity {    /*圆形进度条上方提示文字    * 作用：跟随进度条外圆弧颜色的变化而变化*/    private TextView Text_CurrentPeople,Text_CurrentTime;    /*圆形进度条    * 作用：外圆弧跟随排队人数与剩余时间的变化而变化*/    private ProgressBarView CurrentPeople,CurrentTime;    /*需要输入的内容*/    private EditText InputMessage;    /*按键*/    private Button SendMessage,ReadProgress,ReadRecord,LineUp,CancelLineUp;    private RelativeLayout TipLayout;    private TextView TipText,btn_Agree,pop_TipText,pop_TipAgree;    private SP sp;    private String AccessToken = "";    private NetWorkBusiness business;    private Context context = null;    /*用来判断是否取消排队，中断线程*/    private boolean Flag = true;    /*用来装载获取服务器的排队人数*/    private int mCurrentNumber;    /*用来装载获取服务器的等候时间    * 时间 = 人数 * 5    * 基数自定义*/    private int mCurrentWaitTime;    /*用来判断是否正在排队，如果正在排队，排队按钮无法点击*/    private boolean EnableFlag = false;    private Thread thread;    private boolean DialogFlag = true;    private PopupWindow mPopupWindow,mPopupWindow_2;    private View TipView,TipView_2;    private static final int COMPLETE = 2;    private static final int START = 1;    private static final int STOP = 0;    Handler handler = new Handler(  ){        @Override        public void handleMessage(@NonNull Message msg) {            super.handleMessage( msg );            switch (msg.what){                case COMPLETE:                    CompleteQueuing();                    break;                case START:                    GetAndSet();                    break;                case STOP:                    clearStyle();                    break;            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate( savedInstanceState );        if (Build.VERSION.SDK_INT >= 21) {            View decorView = getWindow().getDecorView();            decorView.setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE );            getWindow().setStatusBarColor( Color.TRANSPARENT );        }        setContentView( R.layout.activity_main );        InitView();        GetSpValue();        Listener();        GetCurrentPeople();        InitPopWidows();    }    /**     * Name:InitView    * Function:初始化控件*/    private void InitView(){        Text_CurrentPeople = findViewById( R.id.Text_CurrentPeople );        Text_CurrentTime = findViewById( R.id.Text_CurrentTime );        InputMessage = findViewById( R.id.InputMessage );        SendMessage = findViewById( R.id.SendMessage );        ReadProgress = findViewById( R.id.ReadProgress );        ReadRecord = findViewById( R.id.ReadRecord );        LineUp = findViewById( R.id.btn_LineUp );        CancelLineUp = findViewById( R.id.btn_CancelLineUp );        CurrentPeople = findViewById( R.id.CurrentPeople );        CurrentTime = findViewById( R.id.CurrentTime );        TipLayout = findViewById( R.id.TipLayout );        TipText = findViewById( R.id.TipText );        if (context == null){            context = MainActivity.this;        }        LineUp.setBackgroundResource( R.drawable.btn_notenable );        LineUp.setEnabled( false );    }    /**     * Name:GetSpValue     * Function:获取AccessToken     * 实例化NetWorkBusiness对象*/    private void GetSpValue(){        sp = new SP( context );        AccessToken = (String) sp.GetData( context,"AccessToken","" );        business = new NetWorkBusiness( AccessToken, Param.URL );    }    private void GetCurrentPeople(){        thread = new Thread(  ){            @Override            public void run() {                super.run();                while (true) {                    while (Flag) {                        try {                            Thread.sleep( 3000 );                        } catch (InterruptedException e) {                            e.printStackTrace();                        }                        Message message = new Message();                        message.what = START;                        handler.sendMessage( message );                    }                }            }        };        thread.start();    }    private void GetAndSet(){        business.getSensors( Param.DEVICEID, Param.QUEUENUMBER, new NCallBack>>(context) {            @Override            protected void onResponse(BaseResponseEntity> response) {            }            @Override            public void onResponse(Call>> call, Response>> response) {                super.onResponse( call, response );                BaseResponseEntity> body = response.body();                if (body!=null && body.getStatus() == 0){                    mCurrentNumber = Integer.parseInt( body.getResultObj().get( 0 ).getValue() );                    mCurrentWaitTime = mCurrentNumber * 5;                    sp.PutData( context,"CurrentNumber",mCurrentNumber );                    sp.PutData( context,"CurrentWaitTime",mCurrentWaitTime );                }            }        } );        runOnUiThread( ()->{            if (mCurrentNumber >= 20){                /*人数大于20，红色*/                setRed();                DialogFlag = true;                DisplayLayout_Queuing();            }else if (mCurrentNumber < 20 && mCurrentNumber > 10 ){                /*人数10-20，紫色*/                setViolet();                DialogFlag = true;                DisplayLayout_Queuing();            }else if (mCurrentNumber <= 10 && mCurrentNumber > 3){                /*人数小于10，绿色*/                setGreen();                DialogFlag = true;                DisplayLayout_Queuing();            }else if (mCurrentNumber <=3 && mCurrentNumber > 0){                if (DialogFlag){                Flag = false;                Message message = new Message();                message.what = COMPLETE;                handler.sendMessage( message );                }            }        } );    }    private void Control(String DeviceID,String Tag,Object value){        business.control( DeviceID, Tag, value, new NCallBack(getApplicationContext()) {            @Override            protected void onResponse(BaseResponseEntity response) {            }            @Override            public void onResponse(Call call, Response response) {                super.onResponse( call, response );               BaseResponseEntity body = response.body();               if (body == null && body.getStatus() != 0){                   Toast.makeText( context,"请求失败",Toast.LENGTH_SHORT ).show();               }            }            @Override            public void onFailure(Call call, Throwable t) {                super.onFailure( call, t );                Toast.makeText( context,"异常",Toast.LENGTH_SHORT ).show();            }        } );    }    private void SendVoiceMessage(){        String Message = InputMessage.getText().toString().trim();        Control( Param.DEVICEID,Param.VOIVE,Message );    }    private void InitPopWidows(){        TipView = LayoutInflater.from( context ).inflate( R.layout.pop_item,null );        btn_Agree = TipView.findViewById( R.id.btn_Agree );        mPopupWindow = new PopupWindow( TipView, ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT );        mPopupWindow.setFocusable( true ); //获取焦点        mPopupWindow.setBackgroundDrawable( new BitmapDrawable() );        mPopupWindow.setOutsideTouchable( true ); //点击外面地方，取消        mPopupWindow.setTouchable( true ); //允许点击        mPopupWindow.setAnimationStyle( R.style.PopupWindow ); //设置动画        btn_Agree.setOnClickListener( new View.OnClickListener() {            @Override            public void onClick(View v) {                //EnableFlag = true;                setGrey();                setStyleInvalid();                setButtonNotEnabled();                /*手机震动*/                Vibrator vibrator = (Vibrator) getSystemService( Service.VIBRATOR_SERVICE);                vibrator.vibrate(100);                mPopupWindow.dismiss();            }        } );        TipView_2 = LayoutInflater.from( context ).inflate( R.layout.tip_pop_item,null );        pop_TipText = TipView_2.findViewById( R.id.pop_TipsText );        pop_TipAgree = TipView_2.findViewById( R.id.pop_TipAgree );        mPopupWindow_2 = new PopupWindow( TipView_2, ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT );        mPopupWindow_2.setFocusable( true ); //获取焦点        mPopupWindow_2.setBackgroundDrawable( new BitmapDrawable() );        mPopupWindow_2.setOutsideTouchable( true ); //点击外面地方，取消        mPopupWindow_2.setTouchable( true ); //允许点击        mPopupWindow_2.setAnimationStyle( R.style.PopupWindow ); //设置动画        pop_TipAgree.setOnClickListener( new View.OnClickListener() {            @Override            public void onClick(View v) {                mPopupWindow_2.dismiss();            }        } );    }    private void DisPlayPopWindows(){        mPopupWindow.showAtLocation( TipView, Gravity.CENTER,0,0 );    }    private void ShowPopWindows(){        pop_TipText.setText( "目前前方剩余"+mCurrentNumber+"人，需要等候"+mCurrentWaitTime+"min" );        mPopupWindow_2.showAtLocation( TipView_2,Gravity.CENTER,0,0 );    }    private void DisplayLayout_Queuing(){        TipLayout.setVisibility( View.VISIBLE );        TipText.setText( "当前正在排队中,请文明排队" );    }    private void DisplayLayout_CancelQueuing(){        TipLayout.setVisibility( View.VISIBLE );        TipText.setText( "当前号码已作废，请重新排队" );    }    private void DisplayLayout_CallNumber(){        TipLayout.setVisibility( View.VISIBLE );        TipText.setText( "排队完成，请前往现场办理业务" );    }    private void CompleteQueuing(){        /*人数小于3，给予提示*/         DisplayLayout_CallNumber();         DisPlayPopWindows();    }    private void setRed(){        Text_CurrentPeople.setTextColor( getResources().getColor( R.color.colorRed ) );        Text_CurrentTime.setTextColor( getResources().getColor( R.color.colorRed ) );        Text_CurrentPeople.setText( mCurrentNumber+getResources().getString( R.string.Tips_2 ) );        Text_CurrentTime.setText( mCurrentWaitTime+"Min" );        CurrentPeople.setProgress( 100 );        CurrentPeople.setCircleColor( getResources().getColor( R.color.colorRed ) );        CurrentPeople.setContent( "拥挤" );        CurrentTime.setProgress( 100 );        CurrentTime.setCircleColor( getResources().getColor( R.color.colorRed ) );        CurrentTime.setContent( "时间长" );    }    private void setViolet(){        Text_CurrentPeople.setTextColor( getResources().getColor( R.color.colorViolet ) );        Text_CurrentTime.setTextColor( getResources().getColor( R.color.colorViolet ) );        Text_CurrentPeople.setText( mCurrentNumber+getResources().getString( R.string.Tips_2 ) );        Text_CurrentTime.setText( mCurrentWaitTime+"Min" );        CurrentPeople.setProgress( mCurrentWaitTime );        CurrentPeople.setCircleColor( getResources().getColor( R.color.colorViolet ) );        CurrentPeople.setContent( "正常" );        CurrentTime.setProgress( mCurrentWaitTime );        CurrentTime.setCircleColor( getResources().getColor( R.color.colorViolet ) );        CurrentTime.setContent( "时间中" );    }    private void setGreen(){            Text_CurrentPeople.setTextColor( getResources().getColor( R.color.colorGreen ) );            Text_CurrentTime.setTextColor( getResources().getColor( R.color.colorGreen ) );            Text_CurrentPeople.setText( mCurrentNumber+getResources().getString( R.string.Tips_2 ) );            Text_CurrentTime.setText( mCurrentWaitTime+"Min" );            CurrentPeople.setProgress( mCurrentWaitTime );            CurrentPeople.setCircleColor( getResources().getColor( R.color.colorGreen ) );            CurrentPeople.setContent( "畅通" );            CurrentTime.setProgress( mCurrentWaitTime );            CurrentTime.setCircleColor( getResources().getColor( R.color.colorGreen ) );            CurrentTime.setContent( "时间短" );    }    private void setGrey(){            Text_CurrentPeople.setTextColor( getResources().getColor( R.color.colorGrey ) );            Text_CurrentTime.setTextColor( getResources().getColor( R.color.colorGrey ) );            Text_CurrentPeople.setText( "0"+getResources().getString( R.string.Tips_2 ) );            Text_CurrentTime.setText( "0 Min" );            CurrentPeople.setProgress( 0 );            CurrentPeople.setCircleColor( getResources().getColor( R.color.colorGrey ) );            CurrentPeople.setContent( "无" );            CurrentTime.setProgress( 0 );            CurrentTime.setCircleColor( getResources().getColor( R.color.colorGrey ) );            CurrentTime.setContent( "无" );    }    /*按钮不能点击*/    private void setButtonNotEnabled(){        SendMessage.setEnabled( false );        ReadProgress.setEnabled( false );        ReadRecord.setEnabled( false );        CancelLineUp.setEnabled( false );        InputMessage.setEnabled( false );        LineUp.setEnabled( true );        InputMessage.setText( "" );    }    /*样式灰色*/    private void setStyleInvalid(){        SendMessage.setBackgroundResource( R.drawable.btn_notenable );        ReadProgress.setBackgroundResource( R.drawable.btn_notenable );        ReadRecord.setBackgroundResource( R.drawable.btn_notenable );        CancelLineUp.setBackgroundResource( R.drawable.btn_notenable );        LineUp.setBackgroundResource( R.drawable.btn_login );    }    /*样式恢复正常*/    private void setNormalStyle(){        SendMessage.setBackgroundResource( R.drawable.btn_login );        ReadProgress.setBackgroundResource( R.drawable.btn_login );        ReadRecord.setBackgroundResource( R.drawable.btn_login );        CancelLineUp.setBackgroundResource( R.drawable.btn_login );        LineUp.setBackgroundResource( R.drawable.btn_notenable );    }    /*按钮允许点击*/    private void setButtonEnabled(){        SendMessage.setEnabled( true );        ReadProgress.setEnabled( true );        ReadRecord.setEnabled( true );        CancelLineUp.setEnabled( true );        InputMessage.setEnabled( true );        LineUp.setEnabled( false );    }    private void NormalStyle(){        DialogFlag = false;        Flag = true;        setNormalStyle();        setButtonEnabled();        Message message = new Message();        message.what = START;        handler.sendMessage( message );    }    /*排队取消状态    * 所有控件置灰*/    private void clearStyle(){        Flag = false;        DisplayLayout_CancelQueuing();        setGrey();        setButtonNotEnabled();        setStyleInvalid();    }    private void StopThread(){        Flag = false;        try {            thread.join( 1000 );        } catch (InterruptedException e) {            e.printStackTrace();        }        Message message = new Message();        message.what = STOP;        handler.sendMessage( message );    }    /*返回按钮*/    public void Exit(View view){      ReturnActivity( LoginActivity.class );    }    private void ReturnActivity(Class Activity){        startActivity( new Intent( context,Activity ) );    }    private void Listener(){        OnClick onClick = new OnClick();        SendMessage.setOnClickListener( onClick );        ReadRecord.setOnClickListener( onClick );        ReadProgress.setOnClickListener( onClick );        LineUp.setOnClickListener( onClick );        CancelLineUp.setOnClickListener( onClick );    }    class OnClick implements View.OnClickListener{        @Override        public void onClick(View v) {            switch (v.getId()){                case R.id.SendMessage:                    SendVoiceMessage();                    break;                case R.id.btn_LineUp:                        NormalStyle();                    break;                case R.id.btn_CancelLineUp:                    StopThread();                    break;                case R.id.ReadProgress:                    ShowPopWindows();                    break;                case R.id.ReadRecord:                    ReturnActivity( HistoricalDataActivity.class );                    break;            }        }    }}

HistoricalDataActivity

效果图

描述

通过在子线程实时获取数据，然后通过runOnUiThread跳转到主线程，实时更新UI，具体使用此处省略，代码基本每句都有注释

代码

public class HistoricalDataActivity extends AppCompatActivity {    private LineChart LineChart;    private String[] mDate;    private LineData mLineData; // 线集合，所有折线以数组的形式存到此集合中    private LineDataSet mDataSet; // 点集合，即一条折线    private List mEntries; // Entry为某条折线上的一个点,其List封装于LineDataSet中    private Timer mTimer; // 定时器,动态获取数据    private NetWorkBusiness mNetWorkBusiness;    private String mAccessToken;    private SP sp;    private Context context = null;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate( savedInstanceState );        if (Build.VERSION.SDK_INT >= 21) {            View decorView = getWindow().getDecorView();            decorView.setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE );            getWindow().setStatusBarColor( Color.TRANSPARENT );        }        setContentView( R.layout.activity_historical_data );        InitView();        InitLineChart();    }    private void InitView(){        LineChart = findViewById( R.id.LineChart );        if (context == null){            context = HistoricalDataActivity.this;        }        sp = new SP( context );        mAccessToken = (String) sp.GetData( context,"AccessToken","" );        mNetWorkBusiness = new NetWorkBusiness( mAccessToken, Param.URL );    }    public void Exit(View view){        startActivity( new Intent( context,MainActivity.class ) );    }    private void InitLineChart(){        LineChart.getDescription().setText("时间");//设置图表的描述文字，会显示在图表的右下角。        LineChart.getLegend().setEnabled(false);        LineChart.setTouchEnabled(true);//启用/禁用与图表的所有可能的触摸交互。        LineChart.setDragEnabled(true);//启用/禁用拖动（平移）图表。        LineChart.setScaleEnabled(true);//启用/禁用缩放图表上的两个轴。        LineChart.setDrawGridBackground(true);//如果启用，chart绘图区后面的背景矩形将绘制。        LineChart.setPinchZoom(false);//如果设置为true，没缩放功能。如果false，x轴和y轴可分别放大。        LineChart.setBackgroundColor(getResources().getColor( R.color.colorWhite ));//设置背景颜色，将覆盖整个图表视图。此外，背景颜色可以在布局文件.xml中进行设置。        LineChart.setBorderColor( getResources().getColor( R.color.colorBlue_1 ) );//设置chart边框线的颜色        LineChart.setBorderWidth( 1 );//setBorderWidth（float width）：设置chart边界线的宽度，单位dp。        LineChart.getAxisRight().setEnabled(false);// 禁止绘制右坐标轴        /*X轴数据*/        XAxis xAxis = LineChart.getXAxis();        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);        xAxis.setDrawGridLines(false);//设置为true，则绘制网格线。        xAxis.setLabelCount(5,false); // force:false,仅建议刻度线标签的数量为10        xAxis.setTextSize(5);        xAxis.setGridColor( getResources().getColor( R.color.colorViolet) );        xAxis.setValueFormatter( new ValueFormatter() {            @Override            public String getFormattedValue(float value) {                return mDate[(int) value];            }        } );        /*Y轴数据*/        YAxis yAxis = LineChart.getAxisLeft();        yAxis.setAxisMinimum(0f); // 设置y轴的坐标最小值为0(人数不小于0)        yAxis.setGranularity(1f); // 设置y轴的坐标之间的最小间隔为1(单位:人)        yAxis.setLabelCount(10, false); // force:false,仅建议刻度线标签的数量为12        yAxis.setGridColor(getResources().getColor( R.color.colorViolet));        mEntries = new ArrayList();        mDataSet = new LineDataSet(mEntries, "排队人数");        mDataSet.setDrawCircles(true); // 禁止绘制折线圆点        mDataSet.setHighlightEnabled(true); // 禁止高亮选中点        mDataSet.setColor(getResources().getColor( R.color.colorBlue_1)); // 折线颜色        mDataSet.setValueFormatter(new ValueFormatter() {            @Override            public String getFormattedValue(float value) {                return  "";            }        });        mLineData = new LineData(mDataSet);        LineChart.setData(mLineData);        LineChart.invalidate(); // 更新视图        mTimer = new Timer(  );        mTimer.schedule( new TimerTask() {            @Override            public void run() {                mNetWorkBusiness.getSensorData( Param.DEVICEID, Param.QUEUENUMBER, "1", "1", null, null, "ASC", "10", "1", new NCallBack>(context) {                    @Override                    protected void onResponse(BaseResponseEntity response) {                    }                    @Override                    public void onResponse(Call> call, Response> response) {                        super.onResponse( call, response );                       List body = response.body().getResultObj().DataPoints;                       if (body == null){                           return;                       }else {                           List list = body.get(0).PointDTO;                           SensorDataPageDTO.VR[] array = new SensorDataPageDTO.VR[list.size()];                           list.toArray(array);                           mDataSet.clear();                           mDate = new String[array.length];                           // = 0;                           for (int idx = 0; idx < array.length; idx++) {                               mDate[idx] = array[idx].RecordTime;                               mDataSet.addEntry(new Entry((float) idx, Float.parseFloat(array[idx].Value)));                           }                           runOnUiThread( ()->{                               // 通知LinData数据已发生变更，以重新计算绘制参数                               LineChart.getLineData().notifyDataChanged();                               // 让ChartLine知道其基础数据已更改，并执行所有必要的计算。每次动态更改数据时,若不调用此方法可能导致崩溃或意外行为。                               LineChart.notifyDataSetChanged();                               LineChart.invalidate();                           } );                       }                    }                } );            }        },100,2000 );    }    @Override    protected void onDestroy() {        super.onDestroy();        mTimer.cancel();    }}

后台数据

总结

路漫漫其修远兮，吾将上下而求索