Sends broadcast on app open to notify addon termux receivers

app/src/main/java/com/termux/app/TermuxActivity.java

@@ -17,6 +17,7 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.ServiceConnection;
 import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Typeface;
@@ -104,6 +105,8 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 
     private static final String RELOAD_STYLE_ACTION = "com.termux.app.reload_style";
 
+    private static final String BROADCAST_TERMUX_OPENED = "com.termux.app.OPENED";
+
     /** The main view of the activity showing the terminal. Initialized in onCreate(). */
     @SuppressWarnings("NullableProblems")
     @NonNull
@@ -334,6 +337,26 @@ public final class TermuxActivity extends Activity implements ServiceConnection
         checkForFontAndColors();
 
         mBellSoundId = mBellSoundPool.load(this, R.raw.bell, 1);
+
+        sendOpenedBroadcast();
+    }
+
+    /**
+     * Send a broadcast notifying Termux app has been opened
+     */
+    void sendOpenedBroadcast() {
+        Intent broadcast = new Intent(BROADCAST_TERMUX_OPENED);
+        List<ResolveInfo> matches = getPackageManager().queryBroadcastReceivers(broadcast, 0);
+
+        // send broadcast to registered Termux receivers
+        // this technique is needed to work around broadcast changes that Oreo introduced
+        for (ResolveInfo info : matches) {
+            Intent explicitBroadcast = new Intent(broadcast);
+            ComponentName cname = new ComponentName(info.activityInfo.applicationInfo.packageName,
+                                                    info.activityInfo.name);
+            explicitBroadcast.setComponent(cname);
+            sendBroadcast(explicitBroadcast);
+        }
     }
 
     void toggleShowExtraKeys() {