如何在Android中制作文件的副本？

要复制文件并将其保存到目标路径，可以使用以下方法。

public static void copy(File src, File dst) throws IOException {    InputStream in = new FileInputStream(src);    try {        OutputStream out = new FileOutputStream(dst);        try { // Transfer bytes from in to out byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) {     out.write(buf, 0, len); }        } finally { out.close();        }    } finally {        in.close();    }}

在API 19+上，你可以使用Java自动资源管理：

public static void copy(File src, File dst) throws IOException {    try (InputStream in = new FileInputStream(src)) {        try (OutputStream out = new FileOutputStream(dst)) { // Transfer bytes from in to out byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) {     out.write(buf, 0, len); }        }    }}