//初始化地图缩略图列表,主界面中调用
void API::InitListWidget()
{
    listWidget->clear();
    listWidget->setViewMode(QListView::IconMode);   //设置为图标显示模式
    listWidget->setResizeMode(QListView::Adjust);   //设置为自适应
#ifdef __arm__
    listWidget->setIconSize(QSize(230, 210));       //设置图标大小
#else
    listWidget->setIconSize(QSize(170, 160));       //设置图标大小
#endif
    listWidget->setMovement(QListView::Static);     //设置为不可拖动
    QDir imagePath(App::AppPath + "/map");
    QStringList filter;
    filter << "*.jpg" << "*.bmp" << "*.png" << "*.jpeg"; //过滤图片文件拓展名
    QStringList maps = imagePath.entryList(filter);

    int count = maps.count();
    for (int i = 0; i < count; i++) {
        QString tempMap = QString("%1/map/%2").arg(App::AppPath).arg(maps.at(i));
        QListWidgetItem *listItem = new QListWidgetItem(QIcon(tempMap), maps.at(i), listWidget, i);
        listItem->setTextAlignment(Qt::AlignCenter);
    }
}