Android将assets文件复制到sd卡上
16lz
2022-01-24
AssetManager am = context.getAssets();AssetFileDescriptor afd = null;try { afd = am.openFd( "MyFile.dat"); // Create new file to copy into. File file = new File(Environment.getExternalStorageDirectory() + java.io.File.separator + "NewFile.dat"); file.createNewFile(); copyFdToFile(afd.getFileDescriptor(), file);} catch (IOException e) { e.printStackTrace();}
public static void copyFdToFile(FileDescriptor src, File dst) throws IOException { FileChannel inChannel = new FileInputStream(src).getChannel(); FileChannel outChannel = new FileOutputStream(dst).getChannel(); try { inChannel.transferTo(0, inChannel.size(), outChannel); } finally { if (inChannel != null) inChannel.close(); if (outChannel != null) outChannel.close(); }}
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