Version 3

Replaced blocked phone number toasts with notifications

build.gradle

@@ -24,6 +24,10 @@ allprojects {
 		mavenLocal()
 		maven { url 'https://jitpack.io' }
 	}
+
+	tasks.withType(JavaCompile) {
+		options.deprecation = true
+	}
 }
 
 android {
@@ -38,7 +42,7 @@ android {
 	defaultConfig {
 		minSdk 28
 		targetSdk compileSdk
-		versionCode 2
+		versionCode 3
 		versionName "$versionCode"
 	}
 

src/main/AndroidManifest.xml

@@ -3,7 +3,8 @@
 
 	<application
 		android:icon="@mipmap/ic_launcher"
-		android:label="@string/app_name">
+		android:label="@string/app_name"
+		android:supportsRtl="true">
 
 		<activity
 			android:name=".MainActivity"
@@ -34,4 +35,7 @@
 
 	<!-- end phone calls -->
 	<uses-permission-sdk-23 android:name="android.permission.ANSWER_PHONE_CALLS" />
+
+	<!-- notify blocked calls -->
+	<uses-permission-sdk-23 android:name="android.permission.POST_NOTIFICATIONS" />
 </manifest>

src/main/java/ilchev/stefan/callblocker/CallReceiver.java

@@ -1,6 +1,10 @@
 package ilchev.stefan.callblocker;
 
 import android.Manifest;
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -10,25 +14,60 @@
 import android.util.Log;
 import android.widget.Toast;
 
-@SuppressWarnings({"deprecation", "RedundantSuppression"})
 public class CallReceiver extends BroadcastReceiver {
 
 	private static final String TAG = "CallReceiver";
 
-	private static void endCall(Context context, String phoneNumber) {
+	private static int NOTIFICATION_ID = 0;
+
+	@SuppressWarnings({"deprecation", "RedundantSuppression"})
+	private static String getIncomingNumber(Intent intent) {
+		return intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
+	}
+
+	@SuppressWarnings({"deprecation", "RedundantSuppression"})
+	private static boolean endCall(Context context) {
 		if (context.checkSelfPermission(Manifest.permission.ANSWER_PHONE_CALLS) != PackageManager.PERMISSION_GRANTED) {
 			Toast.makeText(context, Manifest.permission.ANSWER_PHONE_CALLS, Toast.LENGTH_LONG).show();
 		}
-		var telecomManager = (TelecomManager) context.getSystemService(Context.TELECOM_SERVICE);
-		if (telecomManager != null && telecomManager.endCall()) {
-			var text = context.getString(R.string.blocked_phone_number, phoneNumber);
-			Toast.makeText(context, text, Toast.LENGTH_LONG).show();
+		var telecomManager = context.getSystemService(TelecomManager.class);
+		return telecomManager != null && telecomManager.endCall();
+	}
+
+	private static void notifyBlockedCall(Context context, String phoneNumber) {
+		var manager = context.getSystemService(NotificationManager.class);
+		if (manager == null) {
+			return;
+		}
+		var id = NOTIFICATION_ID = NOTIFICATION_ID % Integer.MAX_VALUE + 1;
+		var applicationInfo = context.getApplicationInfo();
+		var applicationIcon = applicationInfo.icon;
+		var applicationLabel = context.getPackageManager().getApplicationLabel(applicationInfo);
+		var text = context.getString(R.string.blocked_phone_number, phoneNumber);
+		var intent = PendingIntent.getActivity(
+				context,
+				id,
+				new Intent(Intent.ACTION_MAIN, null, context, MainActivity.class)
+						.addCategory(Intent.CATEGORY_LAUNCHER),
+				PendingIntent.FLAG_IMMUTABLE);
+		var builder = new Notification.Builder(context, BuildConfig.APPLICATION_ID)
+				.setSmallIcon(applicationIcon)
+				.setContentTitle(applicationLabel)
+				.setContentText(text)
+				.setContentIntent(intent);
+		if (id == 1) {
+			var channel = new NotificationChannel(
+					BuildConfig.APPLICATION_ID,
+					applicationLabel,
+					NotificationManager.IMPORTANCE_MIN);
+			manager.createNotificationChannel(channel);
 		}
+		manager.notify(id, builder.build());
 	}
 
 	@Override
 	public void onReceive(Context context, Intent intent) {
-		var phoneNumber = intent != null ? intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER) : null;
+		var phoneNumber = intent != null ? getIncomingNumber(intent) : null;
 		if (context == null || phoneNumber == null ||
 				!TelephonyManager.ACTION_PHONE_STATE_CHANGED.equals(intent.getAction()) ||
 				!TelephonyManager.EXTRA_STATE_RINGING.equals(intent.getStringExtra(TelephonyManager.EXTRA_STATE))) {
@@ -37,8 +76,9 @@ public void onReceive(Context context, Intent intent) {
 		var sharedPreferences = context.getSharedPreferences(BuildConfig.APPLICATION_ID, Context.MODE_PRIVATE);
 		try {
 			var callBlocker = new CallBlocker(sharedPreferences);
-			if (callBlocker.isBlocked(phoneNumber)) {
-				endCall(context, phoneNumber);
+			if (callBlocker.isBlocked(phoneNumber) &&
+					endCall(context)) {
+				notifyBlockedCall(context, phoneNumber);
 			}
 		} catch (Throwable t) {
 			Log.w(TAG, t);

src/main/java/ilchev/stefan/callblocker/MainActivity.java

@@ -1,7 +1,11 @@
 package ilchev.stefan.callblocker;
 
+import android.Manifest;
+import android.annotation.SuppressLint;
 import android.app.Activity;
+import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
+import android.os.Build;
 import android.os.Bundle;
 import android.text.Editable;
 import android.text.TextWatcher;
@@ -11,12 +15,19 @@
 import android.widget.RadioGroup;
 import android.widget.TextView;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
 import java.util.function.Function;
 
 public class MainActivity extends Activity {
 
 	private static final String TAG = "MainActivity";
 
+	@SuppressLint("InlinedApi")
+	private static final String POST_NOTIFICATIONS =
+			Manifest.permission.POST_NOTIFICATIONS;
+
 	private static int toBlockId(Boolean value) {
 		return value == null ? R.id.block_none
 				: value ? R.id.block_matches
@@ -29,6 +40,15 @@ private static Boolean toBoolean(int value) {
 				: null;
 	}
 
+	@SuppressWarnings({"deprecation", "RedundantSuppression"})
+	private PackageInfo getPackageInfo(int flags) throws PackageManager.NameNotFoundException {
+		var packageManager = getPackageManager();
+		var packageName = getPackageName();
+		return Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU
+				? packageManager.getPackageInfo(packageName, flags)
+				: packageManager.getPackageInfo(packageName, PackageManager.PackageInfoFlags.of(flags));
+	}
+
 	private void updateContent(int sourceId, Function<CallBlocker, Boolean> function) {
 		var sharedPreferences = getSharedPreferences(BuildConfig.APPLICATION_ID, MODE_PRIVATE);
 		String error = null;
@@ -103,9 +123,16 @@ private void initContent() {
 
 	private void requestRequestedPermissions() {
 		try {
-			var packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_PERMISSIONS);
-			if (packageInfo.requestedPermissions != null && packageInfo.requestedPermissions.length > 0) {
-				requestPermissions(packageInfo.requestedPermissions, 0);
+			var packageInfo = getPackageInfo(PackageManager.GET_PERMISSIONS);
+			var set = packageInfo.requestedPermissions != null
+					? new HashSet<>(Arrays.asList(packageInfo.requestedPermissions))
+					: Collections.<String>emptySet();
+			if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
+				set.remove(POST_NOTIFICATIONS);
+			}
+			if (!set.isEmpty()) {
+				var permissions = set.toArray(new String[]{});
+				requestPermissions(permissions, 0);
 			}
 		} catch (Throwable t) {
 			Log.w(TAG, t);

src/main/res/drawable/ic_launcher_monochrome.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+	android:width="108dp"
+	android:height="108dp"
+	android:viewportWidth="108"
+	android:viewportHeight="108">
+	<path
+		android:fillColor="#FFFFFF"
+		android:fillType="nonZero"
+		android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+		android:strokeWidth="1"
+		android:strokeColor="#00000000" />
+</vector>

src/main/res/mipmap/ic_launcher.xml

@@ -2,4 +2,5 @@
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
 	<background android:drawable="@drawable/ic_launcher_background" />
 	<foreground android:drawable="@drawable/ic_launcher_foreground" />
+	<monochrome android:drawable="@drawable/ic_launcher_monochrome" />
 </adaptive-icon>