showLoading static method

void showLoading({ String? text = "加载中...", Color backgroundColor = Colors.black54, Color indicatorColor = Colors.white, double indicatorSize = 40.0, })

Implementation

static void showLoading({
  String? text = "加载中...",
  Color backgroundColor = Colors.black54,
  Color indicatorColor = Colors.white,
  double indicatorSize = 40.0,
}) {
  // 关闭可能存在的旧弹窗
  if (Get.isDialogOpen ?? false) {
    Get.back();
  }
  // 显示新的 Loading 弹窗
  Get.dialog(
    barrierDismissible: false, // 禁止点击空白处关闭
    PopScope(
      // 禁止物理返回键关闭（关键替换：用 PopScope 替代 WillPopScope）
      canPop: false, // 控制是否允许返回
      child: Material(
        color: Colors.transparent,
        child: Stack(
          children: [
            Center(
              child: Container(
                padding: const EdgeInsets.symmetric(
                  horizontal: 24,
                  vertical: 16,
                ),
                decoration: BoxDecoration(
                  color: Colors.black87,
                  borderRadius: BorderRadius.circular(8),
                ),
                child: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    // 圆形进度指示器
                    SizedBox(
                      width: indicatorSize,
                      height: indicatorSize,
                      child: CircularProgressIndicator(
                        valueColor: AlwaysStoppedAnimation(indicatorColor),
                        strokeWidth: 3,
                      ),
                    ),
                    // 提示文本
                    if (text != null && text.isNotEmpty)
                      Padding(
                        padding: const EdgeInsets.only(top: 16),
                        child: Text(
                          text,
                          style: const TextStyle(
                            color: Colors.white,
                            fontSize: 16,
                          ),
                        ),
                      ),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
    ),
  );
}