target sdk 34

Pending intent and broadcast receiver changed according to sdk 34 release notes.
Permisssion dialog now shown while fragment is paused.

usbSerialExamples/build.gradle

@@ -3,7 +3,7 @@ plugins {
 }
 
 android {
-    compileSdkVersion 33
+    compileSdkVersion 34
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
@@ -12,7 +12,7 @@ android {
 
     defaultConfig {
         minSdkVersion 17
-        targetSdkVersion 33
+        targetSdkVersion 34
         vectorDrawables.useSupportLibrary = true
 
         missingDimensionStrategy 'device', 'anyDevice'

usbSerialExamples/src/main/java/com/hoho/android/usbserial/examples/TerminalFragment.java

@@ -28,6 +28,7 @@ import android.widget.ToggleButton;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.core.content.ContextCompat;
 import androidx.fragment.app.Fragment;
 
 import com.hoho.android.usbserial.driver.UsbSerialDriver;
@@ -89,12 +90,22 @@ public class TerminalFragment extends Fragment implements SerialInputOutputManag
         withIoManager = getArguments().getBoolean("withIoManager");
     }
 
+    @Override
+    public void onStart() {
+        super.onStart();
+        ContextCompat.registerReceiver(getActivity(), broadcastReceiver, new IntentFilter(INTENT_ACTION_GRANT_USB), ContextCompat.RECEIVER_NOT_EXPORTED);
+    }
+
+    @Override
+    public void onStop() {
+        getActivity().unregisterReceiver(broadcastReceiver);
+        super.onStop();
+    }
+
     @Override
     public void onResume() {
         super.onResume();
-        getActivity().registerReceiver(broadcastReceiver, new IntentFilter(INTENT_ACTION_GRANT_USB));
-
-        if(usbPermission == UsbPermission.Unknown || usbPermission == UsbPermission.Granted)
+        if(!connected && (usbPermission == UsbPermission.Unknown || usbPermission == UsbPermission.Granted))
             mainLooper.post(this::connect);
     }
 
@@ -104,7 +115,6 @@ public class TerminalFragment extends Fragment implements SerialInputOutputManag
             status("disconnected");
             disconnect();
         }
-        getActivity().unregisterReceiver(broadcastReceiver);
         super.onPause();
     }
 
@@ -213,7 +223,9 @@ public class TerminalFragment extends Fragment implements SerialInputOutputManag
         if(usbConnection == null && usbPermission == UsbPermission.Unknown && !usbManager.hasPermission(driver.getDevice())) {
             usbPermission = UsbPermission.Requested;
             int flags = Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? PendingIntent.FLAG_MUTABLE : 0;
-            PendingIntent usbPermissionIntent = PendingIntent.getBroadcast(getActivity(), 0, new Intent(INTENT_ACTION_GRANT_USB), flags);
+            Intent intent = new Intent(INTENT_ACTION_GRANT_USB);
+            intent.setPackage(getActivity().getPackageName());
+            PendingIntent usbPermissionIntent = PendingIntent.getBroadcast(getActivity(), 0, intent, flags);
             usbManager.requestPermission(driver.getDevice(), usbPermissionIntent);
             return;
         }

usbSerialForAndroid/build.gradle

@@ -4,11 +4,11 @@ plugins {
 }
 
 android {
-    compileSdkVersion 33
+    compileSdkVersion 34
 
     defaultConfig {
         minSdkVersion 17
-        targetSdkVersion 33
+        targetSdkVersion 34
         consumerProguardFiles 'proguard-rules.pro'
         
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

usbSerialForAndroid/src/androidTest/java/com/hoho/android/usbserial/util/UsbWrapper.java

@@ -86,9 +86,11 @@ public class UsbWrapper implements SerialInputOutputManager.Listener {
                 }
             };
             int flags = Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ? PendingIntent.FLAG_MUTABLE : 0;
-            PendingIntent permissionIntent = PendingIntent.getBroadcast(context, 0, new Intent("com.android.example.USB_PERMISSION"), flags);
+            Intent intent = new Intent("com.android.example.USB_PERMISSION");
+            intent.setPackage(context.getPackageName());
+            PendingIntent permissionIntent = PendingIntent.getBroadcast(context, 0, intent, flags);
             IntentFilter filter = new IntentFilter("com.android.example.USB_PERMISSION");
-            context.registerReceiver(usbReceiver, filter);
+            context.registerReceiver(usbReceiver, filter, Context.RECEIVER_NOT_EXPORTED);
             usbManager.requestPermission(serialDriver.getDevice(), permissionIntent);
             for(int i=0; i<5000; i++) {
                 if(granted[0] != null) break;