测试

app/src/main/java/com/naz/sdkdemo/MainActivity.java

@@ -1212,7 +1212,7 @@ public class MainActivity extends BaseActivity {
                 port.open();
                 return;
             }
-            serialPortManager = new SerialPortManager();
+            SerialPortManager serialPortManager = new SerialPortManager();
             serialPortManager.init(MainActivity.this, name, 9600, new SerialPortManager.SerialCallBack() {
                 @Override
                 public void dataCallBack(String data) {