修改 设备异常后重新获取实例

app/src/main/AndroidManifest.xml

@@ -31,10 +31,10 @@
         <activity
             android:name=".AppLoginActivity"
             android:exported="true">
-            <intent-filter>
+<!--            <intent-filter>-->
-                <action android:name="android.intent.action.MAIN" />
+<!--                <action android:name="android.intent.action.MAIN" />-->
-                <category android:name="android.intent.category.LAUNCHER" />
+<!--                <category android:name="android.intent.category.LAUNCHER" />-->
-            </intent-filter>
+<!--            </intent-filter>-->
         </activity>
         <activity
             android:name=".ReadActivity"
@@ -47,10 +47,10 @@
         <activity
             android:name=".WriteUserActivity"
             android:exported="true">
-            <!--            <intent-filter>-->
+                        <intent-filter>
-            <!--                <action android:name="android.intent.action.MAIN" />-->
+                            <action android:name="android.intent.action.MAIN" />
-            <!--                <category android:name="android.intent.category.LAUNCHER" />-->
+                            <category android:name="android.intent.category.LAUNCHER" />
-            <!--            </intent-filter>-->
+                        </intent-filter>
         </activity>
         <activity
             android:name=".ConfigurationTableActivity"

app/src/main/java/com/example/jinyu_rfid/ReadActivity.java

@@ -64,8 +64,8 @@ public class ReadActivity extends BaseActivity implements DataReturnCall {
         binding.setAdapter(adapter);
         // 名称
         stringArray = getResources().getStringArray(R.array.project_list);
-        rfidModel = new C5106Device(this,this);
+        // rfidModel = new C5106Device(this,this);
-        // rfidModel=new AutoID9UDevice(this,this);
+        rfidModel=new AutoID9UDevice(this,this);
 
     }
 

app/src/main/java/com/example/jinyu_rfid/WriteUserActivity.java

@@ -58,8 +58,8 @@ public class WriteUserActivity extends BaseActivity implements DataReturnCall, P
         popupMenu = new PopupMenu(this, binding.writeMenu);
         popupMenu.setOnMenuItemClickListener(this);
         getMenuInflater().inflate(R.menu.activity_menu, popupMenu.getMenu());
-        rfidModel = new C5106Device(this,this);
+        // rfidModel = new C5106Device(this,this);
-        // rfidModel=new AutoID9UDevice(this,this);
+        rfidModel=new AutoID9UDevice(this,this);
     }
 
 

app/src/main/java/com/example/jinyu_rfid/rfid/AutoID9UDevice.java

@@ -85,21 +85,32 @@ public class AutoID9UDevice implements RFIDModel {
     public void sanUser(int len) {
         var power = uhfService.getPower();
         Log.e("TAG", "设备功率:" + power);
+        if (power==0){
+            uhfService.close();
+            uhfService = UHFService.getInstance();
+            uhfService.open();
+            Log.e("TAG", "设备功率:" + uhfService.getPower());
+        }
+        if (id==null){
+            String info = null;
+            EPC epc=new EPC();
+            var result = uhfService.inventoryOnce(epc, 100);
+            Log.e("TAG", "单次寻卡:" + result);
+            Log.e("TAG", "epcid:" + epc.getId());
+            id=epc.getId();
+            return;
+        }
 
-        String info = null;
+        // if (result) {
-        EPC epc=new EPC();
-        var result = uhfService.inventoryOnce(epc, 100);
-        Log.e("TAG", "epcid:" + epc.getId());
-        if (result) {
             var i = len * 2;
             byte[] data = new byte[i];
-            result = uhfService.readTagData(AutoID9UUtil.getHexByteArray(epc.getId()), password, 3, 0, i, data);
+           var result = uhfService.readTagData(AutoID9UUtil.getHexByteArray(id), password, 3, 0, i, data);
             Log.e("TAG", "按长度读取:" + result);
             if (result) {
-                info = Tools.Bytes2HexString(data, data.length);
+              var  info = Tools.Bytes2HexString(data, data.length);
             }
-        }
+        // }
-        call.readUserInfo(info,result,null);
+        // call.readUserInfo(info,result,null);
     }
 
     @Override