如何在一个新建的工程里面添加assets目录：
拷贝assets下文件到sd卡主要方法：
/**
* 拷贝assets中的文件到SDCard中
*/
public boolean saveAssetsToSDCard(String assFileName, String localFileName) {
boolean isSave;
String fileDir = Environment.getExternalStorageDirectory() +"/test/";
File fileD =new File(fileDir);
if (!fileD.exists() || !fileD.isDirectory()) {
if (!fileD.mkdirs()) {
// 文件夹创建失败
Log.i("copy file:", "saveAssetToSDCard: file make dir file");
}
}
String filePath = fileDir + pathName;
if (TextUtils.isEmpty(filePath)) {
return false;
}
File file =new File(filePath);
//如果文件存在，则不拷贝
//if (file.exists()) {
// return true;
//}
InputStream is =null;
FileOutputStream fos =null;
try {
is = getApplicationContext().getAssets().open(assName);
int size = is.available();
byte[] buffer =new byte[size];
is.read(buffer);
fos =new FileOutputStream(file);
fos.write(buffer);
isSave =true;
Log.i("copy file:", "saveAssetToSDCard: finish");
}catch (Exception e) {
isSave =false;
e.printStackTrace();
}finally {
if (is !=null) {
try {
is.close();
}catch (Exception e) {
e.printStackTrace();
}
}
if (fos !=null) {
try {
fos.close();
}catch (Exception e) {
e.printStackTrace();
}
}
}
return isSave;
}
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