package com.example.serial;
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import androidx.activity.EdgeToEdge;
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import androidx.appcompat.app.AppCompatActivity;
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import android.os.Bundle;
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import android.text.method.ScrollingMovementMethod;
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import android.util.Log;
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import android.view.View;
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import android.widget.AdapterView;
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import android.widget.ArrayAdapter;
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import android.widget.Button;
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import android.widget.EditText;
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import android.widget.Spinner;
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import android.widget.TextView;
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import android.widget.Toast;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.TimeZone;
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public class CanActivity extends AppCompatActivity {
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private volatile boolean receiving = false;
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private Thread receiveThread;
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private String data; // 存放发送的数据
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private String canId;
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private String dlc;
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private String canName;
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private String status = "send";
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private Button mBtnSend;
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private Button mBtnRecv;
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private Button mBtnSendClear;
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private Button mBtnRecvClear;
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private TextView mTvSend;
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private TextView mTvRecv;
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private EditText mEdId;
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private EditText mEdDlc;
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private EditText mEdData;
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private Spinner mSpCan;
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private Spinner mSpBit;
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private CanControl canControl = new CanControl();
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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EdgeToEdge.enable(this);
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setContentView(R.layout.activity_can);
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mBtnSend = findViewById(R.id.can_send);
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mBtnRecv = findViewById(R.id.can_recv);
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mBtnSendClear = findViewById(R.id.can_send_clear);
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mBtnRecvClear = findViewById(R.id.can_recv_clear);
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mTvSend = findViewById(R.id.can_tv_send);
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mTvRecv = findViewById(R.id.can_tv_recv);
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mEdId = findViewById(R.id.can_ed_id);
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mEdDlc = findViewById(R.id.can_ed_dlc);
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mEdData = findViewById(R.id.can_ed_data);
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mSpCan = findViewById(R.id.sp_can);
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mTvSend.setMovementMethod(ScrollingMovementMethod.getInstance());
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mTvRecv.setMovementMethod(ScrollingMovementMethod.getInstance());
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ArrayAdapter<CharSequence> adapter_name;
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adapter_name = ArrayAdapter.createFromResource(CanActivity.this, R.array.can_name, android.R.layout.simple_spinner_item);
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adapter_name.setDropDownViewResource(android.R.layout.simple_spinner_item);
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mSpCan.setAdapter(adapter_name);
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mSpCan.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
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@Override
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public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
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canName = getResources().getStringArray(R.array.can_name)[position];
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}
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@Override
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public void onNothingSelected(AdapterView<?> parent) {
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}
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});
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setListener();
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}
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private void setListener() {
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OnClick onClick = new OnClick();
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mBtnRecv.setOnClickListener(onClick);
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mBtnRecvClear.setOnClickListener(onClick);
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mBtnSend.setOnClickListener(onClick);
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mBtnSendClear.setOnClickListener(onClick);
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}
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private class OnClick implements View.OnClickListener {
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public void onClick(View v) {
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int id = v.getId();
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if (id == R.id.can_send) {
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status = "send";
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if (canName == null){
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Toast.makeText(CanActivity.this, "请选择CAN！", Toast.LENGTH_SHORT).show();
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}
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canId = mEdId.getText().toString();
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dlc = mEdDlc.getText().toString();
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data = mEdData.getText().toString();
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if (Integer.parseInt(canId) > 0xFFF || Integer.parseInt(canId) < 0x000) {
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Toast.makeText(CanActivity.this, "请输入正确的ID！", Toast.LENGTH_SHORT).show();
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}else if (Integer.parseInt(dlc) > 7 || Integer.parseInt(canId) < 0){
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Toast.makeText(CanActivity.this, "请输入正确的DLC！", Toast.LENGTH_SHORT).show();
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}else {
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SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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df.setTimeZone(TimeZone.getTimeZone("GMT+8"));
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String date = df.format(new Date());
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int rv = canControl.sendMessage(canId, dlc, data, canName);
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if (rv < 0) {
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Log.e("Send", "Send failed");
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Toast.makeText(CanActivity.this, "发送失败，检查网络是否连接！", Toast.LENGTH_SHORT).show();
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}else {
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mTvSend.post(() -> {
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String sendData = date + "\t" + "ID=" + canId + " DLC=" + dlc + " Data=" + data;
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String currentText = mTvSend.getText().toString();
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String newText = currentText + "\n" + sendData; // 追加新数据
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mTvSend.append("\n" + sendData);
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});
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}
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}
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} else if (id == R.id.can_send_clear) {
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mTvSend.setText("");
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} else if (id == R.id.can_recv) {
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if (canName == null){
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Toast.makeText(CanActivity.this, "请选择CAN！", Toast.LENGTH_SHORT).show();
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}
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status = "recv";
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startReceiving();
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} else if (id == R.id.can_recv_clear) {
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status = "stopRecv";
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mTvRecv.setText("");
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}
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}
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}
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public void startReceiving() {
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receiving = true;
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Log.d("TAG", "startReceiving: "+status);
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receiveThread = new Thread(() -> {
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Log.d("TAG", "startReceiving: "+status);
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while (status.equals("recv")) {
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SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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df.setTimeZone(TimeZone.getTimeZone("GMT+8"));
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String date = df.format(new Date());
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String buf = canControl.receiveMessage(canName);
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if (buf == null) {
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Log.e("Recv", "Receive failed");
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}
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Log.d("Recv", buf);
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mTvRecv.post(() -> {
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String revData = date + "\t" + buf;
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String currentText = mTvRecv.getText().toString();
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String newText = currentText + "\n" + revData; // 追加新数据
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mTvRecv.setText(newText);
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});
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try {
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Thread.sleep(10); // 每 10 ms 读取一次数据
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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});
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receiveThread.start();
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}
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}
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