KenjiMaehara
@KenjiMaehara (Kenji maemae)

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lvglライブラリで画面遷移プログラムを作りたい

解決したいこと

現在、ESP32とタッチパネルTFT(ili9488)を組み合わせて、タッチパネル型のGUI画面を作りたいと思っています。

lvglライブラリで画面遷移のようなことがやりたいと思うのですが、どのようにやればよいかご教示の程よろしくお願いいたします。

例えば、下の2つの画面
・void lv_ex_btn_t(void)
・void lv_ex_btn_t02(void)

”次のページ”、”前のページ”を押すことで、この2つのページを行き来できるようなプログラムを作りたいです。

void lv_ex_btn_t(void)
{
    lv_obj_t * label;

    lv_obj_t * btn1 = lv_btn_create(lv_scr_act(), NULL);
    lv_obj_set_event_cb(btn1, event_handler);
    lv_obj_align(btn1, NULL, LV_ALIGN_CENTER, 0, -40);

    label = lv_label_create(btn1, NULL);
    //lv_label_set_text(label, "Button");
    lv_label_set_text(label, "次のページへ");

    lv_obj_t * btn2 = lv_btn_create(lv_scr_act(), NULL);
    lv_obj_set_event_cb(btn2, event_handler);
    lv_obj_align(btn2, NULL, LV_ALIGN_CENTER, 0, 40);
    lv_btn_set_checkable(btn2, true);
    lv_btn_toggle(btn2);
    lv_btn_set_fit2(btn2, LV_FIT_NONE, LV_FIT_TIGHT);

    label = lv_label_create(btn2, NULL);
    //lv_label_set_text(label, "Toggled");
    lv_label_set_text(label, "テスト20");



    lv_obj_t * btn3 = lv_btn_create(lv_scr_act(), NULL);
    lv_obj_set_event_cb(btn3, event_handler);
    lv_obj_align(btn3, NULL, LV_ALIGN_CENTER, 0, 120);
    lv_btn_set_checkable(btn3, true);
    lv_btn_toggle(btn3);
    lv_btn_set_fit2(btn3, LV_FIT_NONE, LV_FIT_TIGHT);

    label = lv_label_create(btn3, NULL);
    //lv_label_set_text(label, "Toggled");
    lv_label_set_text(label, "テスト30");
}


void lv_ex_btn_t02(void)
{
    lv_obj_t * label;

    lv_obj_t * btn1 = lv_btn_create(lv_scr_act(), NULL);
    lv_obj_set_event_cb(btn1, event_handler);
    lv_obj_align(btn1, NULL, LV_ALIGN_CENTER, 0, -40);

    label = lv_label_create(btn1, NULL);
    //lv_label_set_text(label, "Button");
    lv_label_set_text(label, "前のページへ");

    lv_obj_t * btn2 = lv_btn_create(lv_scr_act(), NULL);
    lv_obj_set_event_cb(btn2, event_handler);
    lv_obj_align(btn2, NULL, LV_ALIGN_CENTER, 0, 40);
    lv_btn_set_checkable(btn2, true);
    lv_btn_toggle(btn2);
    lv_btn_set_fit2(btn2, LV_FIT_NONE, LV_FIT_TIGHT);

    label = lv_label_create(btn2, NULL);
    //lv_label_set_text(label, "Toggled");
    lv_label_set_text(label, "テスト20");



    lv_obj_t * btn3 = lv_btn_create(lv_scr_act(), NULL);
    lv_obj_set_event_cb(btn3, event_handler);
    lv_obj_align(btn3, NULL, LV_ALIGN_CENTER, 0, 120);
    lv_btn_set_checkable(btn3, true);
    lv_btn_toggle(btn3);
    lv_btn_set_fit2(btn3, LV_FIT_NONE, LV_FIT_TIGHT);

    label = lv_label_create(btn3, NULL);
    //lv_label_set_text(label, "Toggled");
    lv_label_set_text(label, "テスト30");
}



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