将.3gp文件从一个目录“外部目录”移动或复制到安卓系统的另一个外部目录

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileMoveCopyExample {
    public static void main(String[] args) {
        String sourceFileName = "source.3gp";
        String targetFileName = "target.3gp";

        // 获取外部存储目录路径
        File externalStorageDir = android.os.Environment.getExternalStorageDirectory();
        String externalStoragePath = externalStorageDir.getAbsolutePath();

        // 构建源文件和目标文件的完整路径
        String sourceFilePath = externalStoragePath + "/" + sourceFileName;
        String targetFilePath = externalStoragePath + "/" + targetFileName;

        // 移动文件
        File sourceFile = new File(sourceFilePath);
        File targetFile = new File(targetFilePath);
        if (sourceFile.renameTo(targetFile)) {
            System.out.println("文件移动成功");
        } else {
            System.out.println("文件移动失败");
        }

        // 复制文件
        try {
            FileInputStream fis = new FileInputStream(sourceFile);
            FileOutputStream fos = new FileOutputStream(targetFile);
            byte[] buffer = new byte[1024];
            int length;
            while ((length = fis.read(buffer)) > 0) {
                fos.write(buffer, 0, length);
            }
            fis.close();
            fos.close();
            System.out.println("文件复制成功");
        } catch (IOException e) {
            System.out.println("文件复制失败");
            e.printStackTrace();
        }
    }
}