以编程方式更改可绘制xml文件中的颜色

// 导入相关的类和包
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;
import org.xmlpull.v1.XmlSerializer;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

public class DrawableColorChanger {
    public static void main(String[] args) {
        try {
            // 1. 解析XML文件
            XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
            XmlPullParser parser = factory.newPullParser();
            InputStream inputStream = new FileInputStream("drawable.xml");
            parser.setInput(inputStream, null);

            // 2. 定位需要修改的颜色属性
            List<String> colorAttributes = new ArrayList<>();
            int eventType = parser.getEventType();
            while (eventType != XmlPullParser.END_DOCUMENT) {
                if (eventType == XmlPullParser.START_TAG) {
                    String tagName = parser.getName();
                    if (tagName.equals("solid") || tagName.equals("stroke")) {
                        String colorAttribute = parser.getAttributeValue(null, "color");
                        if (colorAttribute != null) {
                            colorAttributes.add(colorAttribute);
                        }
                    }
                }
                eventType = parser.next();
            }

            // 3. 修改颜色属性
            for (String colorAttribute : colorAttributes) {
                // 进行颜色修改操作，这里仅作示例，可以根据实际需求进行修改
                String modifiedColor = modifyColor(colorAttribute);

                // 4. 保存修改后的XML文件
                XmlSerializer serializer = factory.newSerializer();
                OutputStream outputStream = new FileOutputStream("modified_drawable.xml");
                serializer.setOutput(outputStream, null);
                inputStream.close();
                inputStream = new FileInputStream("drawable.xml");
                parser.setInput(inputStream, null);

                eventType = parser.getEventType();
                while (eventType != XmlPullParser.END_DOCUMENT) {
                    if (eventType == XmlPullParser.START_TAG) {
                        String tagName = parser.getName();
                        if (tagName.equals("solid") || tagName.equals("stroke")) {
                            String originalColorAttribute = parser.getAttributeValue(null, "color");
                            if (originalColorAttribute != null && originalColorAttribute.equals(colorAttribute)) {
                                serializer.startTag(null, tagName);
                                serializer.attribute(null, "color", modifiedColor);
                                serializer.endTag(null, tagName);
                            } else {
                                // 保持原有的标签和属性
                                serializer.startTag(null, tagName);
                                for (int i = 0; i < parser.getAttributeCount(); i++) {
                                    serializer.attribute(null, parser.getAttributeName(i), parser.getAttributeValue(i));
                                }
                                serializer.endTag(null, tagName);
                            }
                        } else {
                            // 保持原有的标签和属性
                            serializer.startTag(null, tagName);
                            for (int i = 0; i < parser.getAttributeCount(); i++) {
                                serializer.attribute(null, parser.getAttributeName(i), parser.getAttributeValue(i));
                            }
                            serializer.endTag(null, tagName);
                        }
                    } else if (eventType == XmlPullParser.TEXT) {
                        // 保持原有的文本内容
                        serializer.text(parser.getText());
                    }
                    eventType = parser.next();
                }

                serializer.endDocument();
                outputStream.close();
            }

            System.out.println("颜色修改完成！");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static String modifyColor(String color) {
        // 进行颜色修改操作，这里仅作示例，可以根据实际需求进行修改
        // 例如，将颜色值中的红色分量加上100
        int red = Integer.parseInt(color.substring(1, 3), 16);
        red = Math.min(red + 100, 255);
        String modifiedColor = String.format("#%02X%02X%02X", red, Integer.parseInt(color.substring(3, 5), 16), Integer.parseInt(color.substring(5, 7), 16));
        return modifiedColor;
    }
}