Basic handling of gestures

app/src/main/java/io/dumpstack/minimap/MainActivity.java

@@ -3,9 +3,13 @@ package io.dumpstack.minimap;
 import androidx.appcompat.app.AppCompatActivity;
 
 import android.os.Bundle;
+import android.view.GestureDetector;
+import android.view.MotionEvent;
 import android.view.View;
 
-public class MainActivity extends AppCompatActivity {
+public class MainActivity extends AppCompatActivity implements GestureDetector.OnGestureListener {
+
+    GestureDetector gestureDetector;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -18,5 +22,45 @@ public class MainActivity extends AppCompatActivity {
 
         View decorView = getWindow().getDecorView();
         decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN);
+
+        this.gestureDetector = new GestureDetector(this, this);
+    }
+
+    @Override
+    public boolean dispatchTouchEvent(MotionEvent ev) {
+        if (gestureDetector.onTouchEvent(ev)) {
+            return true;
+        }
+        return super.dispatchTouchEvent(ev);
+    }
+
+    @Override
+    public boolean onDown(MotionEvent e) {
+        return false;
+    }
+
+    @Override
+    public void onShowPress(MotionEvent e) {
+    }
+
+    @Override
+    public boolean onSingleTapUp(MotionEvent e) {
+        return false;
+    }
+
+    @Override
+    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
+        return false;
+    }
+
+    @Override
+    public void onLongPress(MotionEvent e) {
+        // TODO Use swipe down to close the application
+        finish();
+    }
+
+    @Override
+    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
+        return false;
     }
 }