android copy,Android copy assets目录下文件到手机SDCard上

/**

* 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;

}