项目实战-物联网平台搭建-MQTT_android客户端（四）

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我是靠谱客的博主辛勤星月，最近开发中收集的这篇文章主要介绍项目实战-物联网平台搭建-MQTT_android客户端（四），觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

MQTT安卓客户端开发目的：

1.作为发布者测试mqtt服务器

2.作为接受者监测发布者数据

3.将接收数据图像化

安卓初学者

先简单展示一下，折线图会实时更新所订阅主题的信息

折线图部分使用MPAndroidChart

github地址：https://github.com/PhilJay/MPAndroidChart

主界面：

主界面xml文件：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MQTT">

    <com.github.mikephil.charting.charts.LineChart
        android:id="@+id/chart"
        android:layout_marginTop="20dp"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:background="#ffffff"
        />
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="服务器："
        android:textSize="25sp"
        android:textStyle="bold"
        android:id="@+id/fuwuqi"
        android:layout_marginTop="250dp"
        android:layout_marginLeft="10dp"
        />
    <EditText
        android:id="@+id/fuwuqi_"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15sp"
        android:textStyle="bold"
        android:layout_toRightOf="@+id/fuwuqi"
        android:layout_marginTop="250dp"
        android:layout_marginLeft="10dp"
        android:width="185dp"
        android:height="40dp"
        android:hint="地址"
        />

    <TextView
        android:id="@+id/zhuti"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="主题："
        android:textSize="25sp"
        android:textStyle="bold"
        android:layout_below="@+id/mima"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="10dp"
                                />
    <EditText
        android:id="@+id/zhuti_"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15sp"
        android:textStyle="bold"
        android:layout_toRightOf="@+id/zhuti"
        android:layout_alignBottom="@+id/zhuti"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="10dp"
        android:width="210dp"
        android:height="40dp"
        android:hint="主题"
        />

    <TextView
        android:id="@+id/yonghuming"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="用户名："
        android:textSize="25sp"
        android:textStyle="bold"
        android:layout_below="@+id/fuwuqi"
        android:layout_marginTop="15dp"
        android:layout_marginLeft="10dp"
        />
    <EditText
        android:id="@+id/yonghuming_"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15sp"
        android:textStyle="bold"
        android:layout_toRightOf="@+id/yonghuming"
        android:layout_alignBottom="@+id/yonghuming"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="10dp"
        android:width="185dp"
        android:height="40dp"
        android:hint="admin"
        />
    <TextView
        android:id="@+id/mima"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="密码："
        android:textSize="25sp"
        android:textStyle="bold"
        android:layout_below="@+id/yonghuming"
        android:layout_marginTop="15dp"
        android:layout_marginLeft="10dp"
        />
    <EditText
        android:id="@+id/mima_"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15sp"
        android:textStyle="bold"
        android:layout_toRightOf="@+id/mima"
        android:layout_alignBottom="@+id/mima"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="10dp"
        android:width="210dp"
        android:height="40dp"
        android:hint="密码"
        />
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="连接"
        android:textSize="25sp"
        android:textStyle="bold"
        android:layout_marginTop="250dp"
        android:layout_alignParentRight="true"
        android:layout_marginRight="5dp"
        android:width="20dp"
        android:height="140dp"
        />
    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="订阅"
        android:textSize="25sp"
        android:textStyle="bold"
        android:layout_below="@+id/button"
        android:layout_marginTop="10dp"
        android:layout_alignParentRight="true"
        android:layout_marginRight="5dp"
        />
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="发送"
        android:textSize="25sp"
        android:textStyle="bold"
        android:layout_below="@+id/button1"
        android:layout_marginTop="10dp"
        android:layout_alignParentRight="true"
        android:layout_marginRight="5dp"
        android:height="150dp"
        />
    <TextView
        android:id="@+id/xuanze"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="选择主题"
        android:textSize="25sp"
        android:textStyle="bold"
        android:layout_below="@+id/zhuti"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="10dp"
        />
    <EditText
        android:id="@+id/fa"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15sp"
        android:textStyle="bold"
        android:layout_below="@+id/xuanze"
        android:layout_marginLeft="10dp"
        android:width="300dp"
        android:height="50dp"
        android:hint="发送框："
        />
    <TextView
        android:id="@+id/shou"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:textStyle="bold"
        android:layout_below="@+id/fa"
        android:layout_marginLeft="10dp"
        android:width="300dp"
        android:height="75dp"
        android:text="接收框："
        />
    <Spinner
        android:id="@+id/spinner"
        android:layout_below="@+id/zhuti_"
        android:layout_toRightOf="@+id/xuanze"
        android:layout_width="180dp"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="15dp"
        android:layout_height="30dp"
        />



</RelativeLayout>

后端

MQTTservice,java

/**
 * MQTT长连接服务
 * Created by cym1497 on 2017/7/10.
 */
public class MQTTService extends Service {

    public static final String TAG = MQTTService.class.getSimpleName();
    private static MQTTService instance;
    private static MqttAndroidClient client;

    private MqttConnectOptions conOpt;
    public static String mytopic;


    @Override
    public void onCreate() {
        super.onCreate();
        instance = this;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        init();
        return super.onStartCommand(intent, flags, startId);
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onDestroy() {
        instance = null;
        try {
            client.disconnect();
            client.unregisterResources();

        } catch (MqttException e) {
            e.printStackTrace();
        }
        super.onDestroy();
    }

    public static void publish(String myTopic,String msg){
        String topic = myTopic;
        Integer qos = 0;
        Boolean retained = false;
        try {
            client.publish(topic, msg.getBytes(), qos.intValue(), retained.booleanValue());
        } catch (MqttException e) {
            e.printStackTrace();
        }
    }


    // MQTT监听连接情况
    private IMqttActionListener iMqttActionListener = new ActionListener();

    // MQTT监听并且接受消息
    private MqttCallback mqttCallback = new CallBack();

    private void init() {
        MQTT.clientId = MacAddressUtil.getLocalMacAddress(this);

        // 服务器地址（协议+地址+端口号）
        String uri = MQTT.host;
        client = new MqttAndroidClient(this, uri, MQTT.clientId);
        // 设置MQTT监听并且接受消息
        client.setCallback(mqttCallback);

        conOpt = new MqttConnectOptions();
        // 清除缓存
        conOpt.setCleanSession(true);
        // 设置超时时间，单位：秒
        conOpt.setConnectionTimeout(10);
        // 心跳包发送间隔，单位：秒
        conOpt.setKeepAliveInterval(20);
        // 用户名
        conOpt.setUserName(MQTT.userName);
        // 密码
        conOpt.setPassword(MQTT.passWord.toCharArray());

        // last will message
        boolean doConnect = true;
//        String message = "{"terminal_uid":"" + MQTT.clientId + ""}";
//        String topic = MQTT.myTopic;
//        Integer qos = 0;
//        Boolean retained = false;
//        if (TextUtils.isEmpty(message) || TextUtils.isEmpty(topic)) {
//            // 最后发送的消息
//            try {
//                conOpt.setWill(topic, message.getBytes(), qos.intValue(), retained.booleanValue());
//            } catch (Exception e) {
//                Log.i(TAG, "Exception Occured", e);
//                doConnect = false;
//                iMqttActionListener.onFailure(null, e);
//            }
//        }
//
        if (doConnect) {
            doClientConnection();
        }

    }

    /** 连接MQTT服务器 */
    private void doClientConnection() {
        if (!client.isConnected() && isConnectIsNomarl()) {
            try {
                client.connect(conOpt, null, iMqttActionListener);
            } catch (MqttException e) {
                e.printStackTrace();
            }
        }
    }

    /** 判断网络是否连接 */
    private boolean isConnectIsNomarl() {
        ConnectivityManager connectivityManager = (ConnectivityManager) this.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if (info != null && info.isAvailable()) {
            String name = info.getTypeName();
            Log.i(TAG, "MQTT当前网络名称：" + name);
            return true;
        } else {
            Log.i(TAG, "MQTT 没有可用网络");
            return false;
        }
    }

    public static boolean isConnect(){
        if (instance != null && client != null){
            return instance.client.isConnected();
        }
        return false;
    }

    public static void connect(){
        if (instance != null && client != null){
            instance.doClientConnection();
        }
    }

    public static void disconnect(){
        if (instance != null){
            try {
                instance.client.disconnect();
            } catch (MqttException e) {
                e.printStackTrace();
            }
        }
    }

    public static class ActionListener implements IMqttActionListener {

        @Override
        public void onSuccess(IMqttToken arg0) {
            Log.i(TAG, "连接成功 ");
//            try {
//                // 订阅myTopic话题
//                client.subscribe(MQTT.myTopic,1);
//            } catch (MqttException e) {
//                e.printStackTrace();
//            }

        }

        @Override
        public void onFailure(IMqttToken arg0, Throwable arg1) {
            arg1.printStackTrace();
            // 连接失败，重连
            Log.i("mtqq", "连接失败");
        }
    }


    public static class CallBack implements MqttCallback {

        @Override
        public void messageArrived(String topic, MqttMessage message) throws Exception {
            mytopic = topic;
            String str1 = new String(message.getPayload());
            MQTTMessage msg = new MQTTMessage();
            msg.setMessage(str1);
            EventBus.getDefault().post(msg);
            String str2 = "topic1:" + topic+ ", qos:" + message.getQos() + ", retained:" + message.isRetained();
            Log.i(TAG, "messageArrived:" + str1);
            Log.i(TAG, str2);
        }

        @Override
        public void deliveryComplete(IMqttDeliveryToken arg0) {
            Log.i("mtqq", "deliveryComplete");
        }

        @Override
        public void connectionLost(Throwable arg0) {
            // 失去连接，重连
            String message = "null";
            if (arg0 != null) {
                message = arg0.getMessage();
            }
            Log.i("mtqq", "connectionLost:"+message);
        }
    }

    //订阅消息
    public void dingyue(String myTopic){
             try {
                // 订阅myTopic话题
                client.subscribe(myTopic,1);
            } catch (MqttException e) {
                e.printStackTrace();
            }

    }
}

MQTT.java

public class MQTT extends AppCompatActivity implements View.OnClickListener{

    public static String host ;//= "tcp://123.56.96.198:1883";
    public static String userName = "admin";
    public static String passWord = "password";
    public static String myTopic ;
    public static String clientId = "test2";
    private static EditText fuwuqi;
    private static EditText zhuti;
    private static TextView shou;
    private static TextView yonghuming;
    private static TextView mima;
    private static Button button;
    private static EditText fa;
    private static boolean linjie=false;
    private static MqttAndroidClient client;
    private static MQTTService mqttService = new MQTTService();

    private Spinner spinner;
    private List<String> data_list;
    private ArrayAdapter<String> arr_adapter;


    private static LineChart chart ;
    private static List<Integer> a;
    private static boolean aa = true;
    private static boolean aaa =false;

    

  /*  private EditText fuwuqi ;
    private Button button;
    private Button button1;
    private EditText zhuti;

   */


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_m_q_t_t);
        spinner = (Spinner) findViewById(R.id.spinner);
        chart = (LineChart) findViewById(R.id.chart);
        a = new ArrayList<Integer>();


        //折线图


        /*
        chart = findViewById(R.id.chart);
        ArrayList<Entry> valsComp1 = new ArrayList<Entry>();
        ArrayList<Entry> valsComp2 = new ArrayList<Entry>();
        Entry c1e1 = new Entry(100.000f, 0); // 0 == quarter 1
        valsComp1.add(c1e1);
        Entry c1e2 = new Entry(50.000f, 1);  // 1 == quarter 2 ...
        valsComp1.add(c1e2);
        // and so on ...

        Entry c2e1 = new Entry(120.000f, 0); // 0 == quarter 1
        valsComp2.add(c2e1);
        Entry c2e2 = new Entry(110.000f, 1); // 1 == quarter 2 ...
        valsComp2.add(c2e2);
        LineDataSet setComp1 = new LineDataSet(valsComp1, "Company 1");
        setComp1.setAxisDependency(YAxis.AxisDependency.LEFT);
        LineDataSet setComp2 = new LineDataSet(valsComp2, "Company 2");
        setComp2.setAxisDependency(YAxis.AxisDependency.LEFT);
        //...
        ArrayList<LineDataSet> dataSets = new ArrayList<LineDataSet>();
        dataSets.add(setComp1);
       // dataSets.add(setComp2);

        ArrayList<String> xVals = new ArrayList<String>();
        xVals.add("1.Q"); xVals.add("2.Q"); xVals.add("3.Q"); xVals.add("4.Q");

        LineData data = new LineData(setComp2);
        chart.setData(data);
        chart.invalidate();
        */
        //ChartUtils c = new ChartUtils();
        //c.setChartData(chart,valsComp2);

        //XAxis xAxis = chart.getXAxis();
//        chart.setOnChartValueSelectedListener(this);
        //chart.setBackgroundColor(0xff00ff00);//设置背景颜射
        //chart.invalidate();//刷新
        //chart.setDescription(a);//设置右下文字
        //chart.setMaxVisibleValueCount(10);//设置最大可绘制数量



        //数据
        data_list = new ArrayList<String>();
        data_list.add("下拉选择");

        //适配器
        arr_adapter= new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data_list);
        //设置样式
        arr_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        //加载适配器
        spinner.setAdapter(arr_adapter);
        /*
        button = findViewById(R.id.button);
        fuwuqi = findViewById(R.id.fuwuqi_);
        button1 = findViewById(R.id.button1);
        zhuti = findViewById(R.id.zhuti_);

        */
        shou = findViewById(R.id.shou);
        fuwuqi = findViewById(R.id.fuwuqi_);
        yonghuming = findViewById(R.id.yonghuming_);
        mima = findViewById(R.id.mima_);
        button = findViewById(R.id.button);
        zhuti = findViewById(R.id.zhuti_);
        fa = findViewById(R.id.fa);


        EventBus.getDefault().register(this);

        findViewById(R.id.button).setOnClickListener(this);
        findViewById(R.id.button1).setOnClickListener(this);
        findViewById(R.id.button2).setOnClickListener(this);


    }

    private boolean isServiceRunning() {
        return ServiceUtil.isServiceWork(this, MQTTService.class.getName());
    }

    @Override
    public void onClick(View v) {
        boolean isRunning = isServiceRunning();
        switch (v.getId()){
            case R.id.button:

                if(TextUtils.isEmpty(fuwuqi.getText())&&!linjie) {
                    Toast toast=Toast.makeText(getApplicationContext(), "请输入服务器地址", Toast.LENGTH_SHORT);
                    toast.show();
                }else if(linjie){
                    button.setText("连接");
                    linjie=false;
                    if (!isRunning){
                        ToastUtil.showToast(this, "MQTT Service stopped");
                    } else {
                        ToastUtil.showToast(this, "MQTT Service stopping");
                        stopService(new Intent(this, MQTTService.class));
                    }
            }else{
                    linjie =true;
                    if(!(TextUtils.isEmpty(yonghuming.getText()))) {
                        userName = yonghuming.getText().toString();
                    }
                    if(!(TextUtils.isEmpty(mima.getText()))) {
                        passWord = mima.getText().toString();
                    }
                    button.setText("断开");
                     host = fuwuqi.getText().toString();
                     System.out.println(host);
                    if (isRunning) {
                        ToastUtil.showToast(this, "MQTT Service started");
                    } else {
                        ToastUtil.showToast(this, "MQTT Service starting !");
                        startService(new Intent(this, MQTTService.class));
                    }
                }
                break;
/*
            case R.id.stop:
                if (!isRunning){
                    ToastUtil.showToast(this, "MQTT Service stopped");
                } else {
                    ToastUtil.showToast(this, "MQTT Service stopping");
                    stopService(new Intent(this, MQTTService.class));
                }
                break;
                */

            case R.id.button1:
                if (!isRunning){
                    ToastUtil.showToast(this, "please start MQTT Service");
                    break;
                }
                if (MQTTService.isConnect()) {
                    if(TextUtils.isEmpty(zhuti.getText())) {
                        ToastUtil.showToast(this, "请输入主题");
                        break;
                    }else {
                        myTopic = zhuti.getText().toString();

                        for (int i = 0; i < data_list.size(); i++) {
                            if(data_list.get(i).equals(myTopic)){
                                System.out.println(data_list.get(i));
                                ToastUtil.showToast(this, "该主题已经订阅");
                            }else if (i==(data_list.size()-1)){
                                data_list.add(myTopic);
                            }
                            //System.out.println(data_list.get(i));
                        }
                        //data_list.add(myTopic);
                        System.out.println(myTopic);

                        mqttService.dingyue(myTopic);

                        ToastUtil.showToast(this, "MQTT Service connected");
                        MQTTService.connect();
                        break;
                    }
                }
                    ToastUtil.showToast(this, "MQTT Service connecting");
                break;

          /*  case R.id.disconnect:
                if (!isRunning){
                    ToastUtil.showToast(this, "please start MQTT Service");
                    break;
                }

                if (!MQTTService.isConnect()){
                    ToastUtil.showToast(this, "MQTT Service disconnected");
                    break;
                }
                ToastUtil.showToast(this, "MQTT Service disconnecting");
                MQTTService.disconnect();
                break;*/

            case R.id.button2:
                if (!isRunning){
                    ToastUtil.showToast(this, "please start MQTT Service");
                    break;
                }

                if (!MQTTService.isConnect()){
                    ToastUtil.showToast(this, "please connect");
                    break;
                }
                if(!(TextUtils.isEmpty(fa.getText()))){
                    MQTTService.publish((String) spinner.getSelectedItem(),fa.getText().toString());
                    break;
                }else{
                    ToastUtil.showToast(this, "请发送输入内容");
                    break;
                }


        }

    }
    @Subscribe(threadMode = ThreadMode.MAIN)
    public void getMqttMessage(MQTTMessage mqttMessage) {

        String message = mqttMessage.getMessage();
        System.out.println(MQTTService.mytopic);
        System.out.println(spinner.getSelectedItem());
        if (MQTTService.mytopic.toString().equals(spinner.getSelectedItem().toString())&&MQTTService.mytopic.toString().equals(data_list.get(1))) { //spinner.getSelectedItem().toString()
            aaa=true;
            if(aa) {
                for (int i = 0; i < a.size(); i++)
                {
                    a.remove(i);
                }
                 aa=false;
             }
            a.add(Integer.parseInt(message));
            initLineChart(a);
            shou.setText(message);
        }else if (MQTTService.mytopic.toString().equals(spinner.getSelectedItem().toString())&&MQTTService.mytopic.toString().equals(data_list.get(2))) { //spinner.getSelectedItem().toString()
            aaa=true;
            if(!aa) {
                for (int i = 0; i < a.size(); i++)
                {
                    a.remove(i);
                }
                aa=true;
            }
            a.add(Integer.parseInt(message));
            initLineChart(a);
            shou.setText(message);
        }else {
            Log.i(MQTTService.TAG, "get message1:" + message);
            //Log.i(MQTTService.TAG,"get message1:"+mqttMessage);
            Toast.makeText(this, mqttMessage.getMessage(), Toast.LENGTH_SHORT).show();
        }

    }

    @Override
    protected void onDestroy() {
        EventBus.getDefault().unregister(this);
        super.onDestroy();
    }



    //


    /**
     * 初始化曲线图表
     *
     * @param list 数据集
     */
    private void initLineChart(final List<Integer> list)
    {
        //显示边界

        chart.setDrawBorders(false);
        //设置数据
        List<Entry> entries = new ArrayList<>();
        for (int i = 0; i < list.size(); i++)
        {
            entries.add(new Entry(i, (float) list.get(i)));
        }
        //一个LineDataSet就是一条线
        LineDataSet lineDataSet = new LineDataSet(entries, "");
        //线颜色
        //lineDataSet.setColor(Color.parseColor("#F15A4A"));
        //线宽度
        lineDataSet.setLineWidth(1.6f);
        //不显示圆点
        lineDataSet.setDrawCircles(false);
        //线条平滑
        lineDataSet.setMode(LineDataSet.Mode.HORIZONTAL_BEZIER);
        //设置折线图填充
//        lineDataSet.setDrawFilled(true);
        LineData data = new LineData(lineDataSet);
        //无数据时显示的文字
        chart.setNoDataText("暂无数据");
        //折线图不显示数值
        data.setDrawValues(false);
        //得到X轴
        XAxis xAxis = chart.getXAxis();
        //设置X轴的位置（默认在上方)
        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
        //设置X轴坐标之间的最小间隔
        xAxis.setGranularity(1f);
        //设置X轴的刻度数量，第二个参数为true,将会画出明确数量（带有小数点），但是可能值导致不均匀，默认（6，false）
        xAxis.setLabelCount(list.size() / 6, false);
        //设置X轴的值（最小值、最大值、然后会根据设置的刻度数量自动分配刻度显示）
        xAxis.setAxisMinimum(0f);
        xAxis.setAxisMaximum((float) list.size());
        //不显示网格线
        xAxis.setDrawGridLines(false);
        // 标签倾斜
        xAxis.setLabelRotationAngle(45);
        //设置X轴值为字符串
        xAxis.setValueFormatter(new IAxisValueFormatter()
        {
            @Override
            public String getFormattedValue(float value, AxisBase axis)
            {
                int IValue = (int) value;
                CharSequence format = DateFormat.format("MM/dd",
                        System.currentTimeMillis()-(long)(list.size()-IValue)*24*60*60*1000);
                return format.toString();
            }
        });
        //得到Y轴
        YAxis yAxis = chart.getAxisLeft();
        YAxis rightYAxis = chart.getAxisRight();
        //设置Y轴是否显示
        rightYAxis.setEnabled(false); //右侧Y轴不显示
        //设置y轴坐标之间的最小间隔
        //不显示网格线
        yAxis.setDrawGridLines(false);
        //设置Y轴坐标之间的最小间隔
        yAxis.setGranularity(1);
        //设置y轴的刻度数量
        //+2：最大值n就有n+1个刻度，在加上y轴多一个单位长度，为了好看，so+2
        yAxis.setLabelCount(Collections.max(list) + 2, false);
        //设置从Y轴值
        yAxis.setAxisMinimum(0f);
        //+1:y轴多一个单位长度，为了好看
        yAxis.setAxisMaximum(Collections.max(list) + 1);

        //y轴
        yAxis.setValueFormatter(new IAxisValueFormatter()
        {
            @Override
            public String getFormattedValue(float value, AxisBase axis)
            {
                int IValue = (int) value;
                return String.valueOf(IValue);
            }
        });
        //图例：得到Lengend
        Legend legend = chart.getLegend();
        //隐藏Lengend
        legend.setEnabled(false);
        //右下添加描述
            if (aa&&aaa) {
                chart.getDescription().setText(data_list.get(2));
            } else if(!aa&&aaa){
                chart.getDescription().setText(data_list.get(1));
            }


        //隐藏描述
        //Description description = new Description();
        //description.setEnabled(false);
        //chart.setDescription(description);
        //折线图点的标记
        //MyMarkerView mv = new MyMarkerView(this);
        //chart.setMarker(mv);
        //设置数据
        chart.setData(data);
        //图标刷新
        chart.invalidate();
    }




}

demo下载：https://download.csdn.net/download/xurQQ/13090390