Put back Serial slowdown setting.

ReadMe.txt

@@ -17,7 +17,7 @@ QUICK START
 
 1. From the left side, slide your finger to open the menu.
 2. Touch the "New..." menu item.
-3. Select a default calculator (or with Android >= 5.0, "[Select a Custom KML script folder...]" where you have copied the KML scripts and ROM files (Android 11 cannot use the folder Download)).
+3. Select a default calculator (or "[Select a Custom KML script folder...]" where you have copied the KML scripts and ROM files (Android 11 may not be able to use the Download folder)).
 4. And the calculator should now be opened.
 
 
@@ -37,7 +37,7 @@ NOTES
   without the need to be root. If it is not automatic, please, activate the OTG mode in your Android device, and then,
   you should be able to see it in the Emu48 settings.
   It is still experimental and I see some issues when sending characters from the emulator to a real HP48 or HP49 with the kermit protocol.
-  For the moment, the communication has been artificially slowed down in this direction.
+  The communication can be artificially slowed down in this direction using an option.
   If the adapter is unplugged then plugged back in, you may need to call OPENIO/CLOSEIO.
 
 
@@ -58,12 +58,14 @@ LINKS
 
 CHANGES
 
-Version 2.7 (2023-07-XX)
+Version 2.7 (2024-06-XX)
 
 - Updated source code with Emu48 version 1.65+. This new version improve the serial communication.
 - Attempt to fix haptic feedback with Android 13 (API deprecation).
 - Patch the ROM files to prevent the calculator to sleep (Fix #22).
 - Fix a potential crash about the permission to access the files.
+- Require at least Android 5.0 (4.4 previously).
+BUG: In Emu48 with HP49 FlashCard, click on Android RECENT button, and comes back in the APP -> we lost the FlashCard!
 
 
 Version 2.6 (2022-08-19)

app/build.gradle

@@ -29,11 +29,11 @@ if (keystorePropertiesFile.exists()) {
 
 android {
     namespace 'org.emulator.forty.eight'
-    compileSdk 33
+    compileSdk 34
     defaultConfig {
         applicationId "org.emulator.forty.eight"
-        minSdk 19
+        minSdk 21
-        targetSdk 33
+        //targetSdk 33
         versionCode 26
         versionName "2.7"
         setProperty("archivesBaseName", "Emu48-v$versionName")
@@ -79,10 +79,10 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'androidx.appcompat:appcompat:1.7.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
-    implementation 'com.google.android.material:material:1.9.0'
+    implementation 'com.google.android.material:material:1.12.0'
-    implementation 'androidx.preference:preference:1.2.0'
+    implementation 'androidx.preference:preference:1.2.1'
     implementation 'androidx.documentfile:documentfile:1.0.1'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test:runner:1.5.2'

app/src/main/assets/ReadMe.txt

@@ -17,7 +17,7 @@ QUICK START
 
 1. From the left side, slide your finger to open the menu.
 2. Touch the "New..." menu item.
-3. Select a default calculator (or with Android >= 5.0, "[Select a Custom KML script folder...]" where you have copied the KML scripts and ROM files (Android 11 cannot use the folder Download)).
+3. Select a default calculator (or "[Select a Custom KML script folder...]" where you have copied the KML scripts and ROM files (Android 11 may not be able to use the Download folder)).
 4. And the calculator should now be opened.
 
 
@@ -37,7 +37,7 @@ NOTES
   without the need to be root. If it is not automatic, please, activate the OTG mode in your Android device, and then,
   you should be able to see it in the Emu48 settings.
   It is still experimental and I see some issues when sending characters from the emulator to a real HP48 or HP49 with the kermit protocol.
-  For the moment, the communication has been artificially slowed down in this direction.
+  The communication can be artificially slowed down in this direction using an option.
   If the adapter is unplugged then plugged back in, you may need to call OPENIO/CLOSEIO.
 
 
@@ -58,12 +58,13 @@ LINKS
 
 CHANGES
 
-Version 2.7 (2023-07-XX)
+Version 2.7 (2024-06-09)
 
 - Updated source code with Emu48 version 1.65+. This new version improve the serial communication.
 - Attempt to fix haptic feedback with Android 13 (API deprecation).
 - Patch the ROM files to prevent the calculator to sleep (Fix #22).
 - Fix a potential crash about the permission to access the files.
+- Require at least Android 5.0 (4.4 previously).
 
 
 Version 2.6 (2022-08-19)

app/src/main/cpp/win32-layer.c

@@ -342,7 +342,7 @@ BOOL WriteFile(HANDLE hFile, LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite,LPDWO
 		free(hexAsciiDump);
 #endif
 		if(serialPortSlowDown)
-			Sleep(4); // Seems to be needed else the kermit packet does not fully reach the genuine calculator.
+			Sleep(4); // Seems to be needed else kermit/XSend packets do not fully reach the genuine calculator.
 		if(lpNumberOfBytesWritten)
 			*lpNumberOfBytesWritten = (DWORD) writenByteCount;
 		return writenByteCount >= 0;

app/src/main/java/org/emulator/calculator/PanAndScaleView.java

@@ -306,7 +306,7 @@ public class PanAndScaleView extends View {
 			public boolean onDown(MotionEvent e) {
 				if(debug) Log.d(TAG, "onDown() actionIndex: " + e.getActionIndex() + ", X: " + e.getX() + ", Y: " + e.getY());
 				scroller.forceFinished(true);
-				ViewCompat.postInvalidateOnAnimation(PanAndScaleView.this);
+				PanAndScaleView.this.postInvalidateOnAnimation();
 				if(onTapDownListener != null) {
 					float scaleAndPanX = (e.getX() - viewPanOffsetX) / viewScaleFactorX;
 					float scaleAndPanY = (e.getY() - viewPanOffsetY) / viewScaleFactorY;
@@ -386,7 +386,7 @@ public class PanAndScaleView extends View {
 						(int)(velocityFactor * velocityX), (int)(velocityFactor * velocityY),
 						0, -(int)viewPanMinX,
 						0, -(int)viewPanMinY);
-				ViewCompat.postInvalidateOnAnimation(PanAndScaleView.this);
+				PanAndScaleView.this.postInvalidateOnAnimation();
 				return true;
 			}
 		});

app/src/main/java/org/emulator/calculator/usbserial/DevicesFragment.java

@@ -20,6 +20,7 @@ import org.emulator.calculator.usbserial.driver.UsbSerialProber;
 
 import java.util.ArrayList;
 import java.util.Locale;
+import java.util.Objects;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -43,14 +44,14 @@ public class DevicesFragment extends ListFragment {
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setHasOptionsMenu(true);
+        //setHasOptionsMenu(true);
-        listAdapter = new ArrayAdapter<ListItem>(getActivity(), 0, listItems) {
+        listAdapter = new ArrayAdapter<ListItem>(requireActivity(), 0, listItems) {
             @NonNull
             @Override
             public View getView(int position, View view, @NonNull ViewGroup parent) {
                 ListItem item = listItems.get(position);
                 if (view == null)
-                    view = getActivity().getLayoutInflater().inflate(Utils.resId(DevicesFragment.this, "layout", "device_list_item"), parent, false);
+                    view = requireActivity().getLayoutInflater().inflate(Utils.resId(DevicesFragment.this, "layout", "device_list_item"), parent, false);
                 TextView text1 = view.findViewById(Utils.resId(DevicesFragment.this, "id", "text1"));
                 TextView text2 = view.findViewById(Utils.resId(DevicesFragment.this, "id", "text2"));
                 if(item.driver == null)
@@ -73,7 +74,7 @@ public class DevicesFragment extends ListFragment {
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
         setListAdapter(null);
-        View header = getActivity().getLayoutInflater().inflate(Utils.resId(DevicesFragment.this, "layout", "device_list_header"), null, false);
+        View header = requireActivity().getLayoutInflater().inflate(Utils.resId(DevicesFragment.this, "layout", "device_list_header"), null, false);
         getListView().addHeaderView(header, null, false);
         setEmptyText(getString(Utils.resId(this, "string", "serial_no_device")));
         ((TextView) getListView().getEmptyView()).setTextSize(18);

app/src/main/res/xml/pref_general.xml

@@ -188,11 +188,11 @@
 			android:title="@string/settings_serial_ports_ir_title"
 			android:summary=""
 			/>
-<!--		<SwitchPreference-->
+		<SwitchPreference
-<!--			android:defaultValue="false"-->
+			android:defaultValue="false"
-<!--			android:key="settings_serial_slowdown"-->
+			android:key="settings_serial_slowdown"
-<!--			android:title="@string/settings_serial_slowdown"-->
+			android:title="@string/settings_serial_slowdown"
-<!--			/>-->
+			/>
 	</PreferenceCategory>
 
 </PreferenceScreen>

build.gradle

@@ -4,10 +4,10 @@ buildscript {
     
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.0.2'
+        classpath 'com.android.tools.build:gradle:8.3.2'
         
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -18,14 +18,16 @@ buildscript {
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
-    tasks.withType(JavaCompile) {
+    tasks.withType(JavaCompile).tap {
+        configureEach {
             options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
         }
     }
-
-task clean(type: Delete) {
-    delete rootProject.buildDir
 }
+
+//task clean(type: Delete) {
+//    delete rootProject.buildDir
+//}

gradle.properties

@@ -6,10 +6,10 @@
 # http://www.gradle.org/docs/current/userguide/build_environment.html
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-android.defaults.buildfeatures.buildconfig=true
+#android.defaults.buildfeatures.buildconfig=true
 android.enableJetifier=true
-android.nonFinalResIds=false
+android.nonFinalResIds=true
-android.nonTransitiveRClass=false
+android.nonTransitiveRClass=true
 android.useAndroidX=true
 org.gradle.jvmargs=-Xmx1536m
 org.gradle.unsafe.configuration-cache=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Sat Jan 28 21:16:38 CET 2023
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME