Primer paso de la investigacion. Se aportan el .apk, las carpetas con el apk extraido y el apk descompilado. El archivo API_DOCUMENTATION.md es un archivo donde se anotaran los descubrimientos del funcionamiento de la API, y los .py son scripts para probar la funcionalidad de la API con los métodos que vayamos encontrando. Finalmente, los archivos .js son scripts de Frida para extraer informacion de la APP durante la ejecucion.

apk_decompiled/sources/com/google/android/material/datepicker/MaterialCalendarGridView.java

@@ -0,0 +1,122 @@
+package com.google.android.material.datepicker;
+
+import O.X;
+import android.R;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.View;
+import android.widget.GridView;
+import android.widget.ListAdapter;
+import kotlin.jvm.internal.IntCompanionObject;
+
+/* loaded from: classes3.dex */
+final class MaterialCalendarGridView extends GridView {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final boolean f5631a;
+
+    public MaterialCalendarGridView(Context context, AttributeSet attributeSet) {
+        super(context, attributeSet, 0);
+        w.c(null);
+        if (m.i(getContext(), R.attr.windowFullscreen)) {
+            setNextFocusLeftId(com.adif.elcanomovil.R.id.cancel_button);
+            setNextFocusRightId(com.adif.elcanomovil.R.id.confirm_button);
+        }
+        this.f5631a = m.i(getContext(), com.adif.elcanomovil.R.attr.nestedScrollable);
+        X.j(this, new U.h(3));
+    }
+
+    public final p a() {
+        return (p) super.getAdapter();
+    }
+
+    @Override // android.widget.GridView, android.widget.AdapterView
+    public final ListAdapter getAdapter() {
+        return (p) super.getAdapter();
+    }
+
+    @Override // android.widget.AbsListView, android.view.ViewGroup, android.view.View
+    public final void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        ((p) super.getAdapter()).notifyDataSetChanged();
+    }
+
+    @Override // android.view.View
+    public final void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+        p pVar = (p) super.getAdapter();
+        pVar.getClass();
+        int max = Math.max(pVar.a(), getFirstVisiblePosition());
+        int min = Math.min(pVar.c(), getLastVisiblePosition());
+        pVar.getItem(max);
+        pVar.getItem(min);
+        throw null;
+    }
+
+    @Override // android.widget.GridView, android.widget.AbsListView, android.view.View
+    public final void onFocusChanged(boolean z3, int i, Rect rect) {
+        if (!z3) {
+            super.onFocusChanged(false, i, rect);
+            return;
+        }
+        if (i == 33) {
+            setSelection(((p) super.getAdapter()).c());
+        } else if (i == 130) {
+            setSelection(((p) super.getAdapter()).a());
+        } else {
+            super.onFocusChanged(true, i, rect);
+        }
+    }
+
+    @Override // android.widget.GridView, android.widget.AbsListView, android.view.View, android.view.KeyEvent.Callback
+    public final boolean onKeyDown(int i, KeyEvent keyEvent) {
+        if (!super.onKeyDown(i, keyEvent)) {
+            return false;
+        }
+        if (getSelectedItemPosition() == -1 || getSelectedItemPosition() >= ((p) super.getAdapter()).a()) {
+            return true;
+        }
+        if (19 != i) {
+            return false;
+        }
+        setSelection(((p) super.getAdapter()).a());
+        return true;
+    }
+
+    @Override // android.widget.GridView, android.widget.AbsListView, android.view.View
+    public final void onMeasure(int i, int i4) {
+        if (!this.f5631a) {
+            super.onMeasure(i, i4);
+            return;
+        }
+        super.onMeasure(i, View.MeasureSpec.makeMeasureSpec(16777215, IntCompanionObject.MIN_VALUE));
+        getLayoutParams().height = getMeasuredHeight();
+    }
+
+    @Override // android.widget.GridView, android.widget.AdapterView
+    public final void setSelection(int i) {
+        if (i < ((p) super.getAdapter()).a()) {
+            super.setSelection(((p) super.getAdapter()).a());
+        } else {
+            super.setSelection(i);
+        }
+    }
+
+    @Override // android.widget.GridView, android.widget.AdapterView
+    /* renamed from: getAdapter, reason: avoid collision after fix types in other method */
+    public final ListAdapter getAdapter2() {
+        return (p) super.getAdapter();
+    }
+
+    @Override // android.widget.AdapterView
+    public final void setAdapter(ListAdapter listAdapter) {
+        if (listAdapter instanceof p) {
+            super.setAdapter(listAdapter);
+            return;
+        }
+        throw new IllegalArgumentException(String.format("%1$s must have its Adapter set to a %2$s", MaterialCalendarGridView.class.getCanonicalName(), p.class.getCanonicalName()));
+    }
+}