android easyexcel如何处理复杂表头

在Android EasyExcel中处理复杂表头可以通过自定义表头样式来实现。以下是一个示例代码来处理复杂表头：

// 创建Excel表格
ExcelWriter excelWriter = new ExcelWriter("path/to/excel/file.xlsx");

// 创建表头样式
WriteCellStyle headCellStyle = new WriteCellStyle();
headCellStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
headCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND);
WriteFont headFont = new WriteFont();
headFont.setFontHeightInPoints((short) 12);
headCellStyle.setWriteFont(headFont);

// 创建Sheet对象
WriteSheet writeSheet = EasyExcel.writerSheet("Sheet1")
    .registerWriteHandler(new CellWriteHandler() {
        @Override
        public void beforeCellCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, CellData cellData, Cell cell, Head head, Integer integer, Integer integer1, Boolean aBoolean) {

            // 自定义表头样式
            if (head.getHeadNameList().contains("header1")) {
                cell.setCellStyle(headCellStyle);
            }

        }

        @Override
        public void afterCellCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, CellData cellData, Cell cell, Head head, Integer integer, Boolean aBoolean) {

        }

        @Override
        public void afterCellDataCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, List<CellData> list, Cell cell, Head head, Integer integer, Boolean aBoolean) {

        }
    })
    .build();

// 写入数据
List<List<String>> head = new ArrayList<>();
head.add(Arrays.asList("header1", "header2", "header3"));
List<List<String>> data = new ArrayList<>();
data.add(Arrays.asList("data1", "data2", "data3"));
excelWriter.write(head, data, writeSheet);

// 关闭ExcelWriter
excelWriter.finish();

在上面的代码中，我们创建了一个自定义的表头样式headCellStyle，并将其应用到指定的表头列上。通过实现CellWriteHandler接口，可以在写入Excel表格时进行定制化处理，以处理复杂的表头结构。