用途：安卓获取图片(如网络头像，本地剪切后的图片)保存到本地指定路径
public class FileUtil {
/**
* 将Bitmap 图片保存到本地路径，并返回路径
* @param c
* @param mType 资源类型，参照 MultimediaContentType 枚举，根据此类型，保存时可自动归类
* @param fileName 文件名称
* @param bitmap 图片
* @return
*/
public static String saveFile(Context c, String fileName, Bitmap bitmap) {
return saveFile(c, "", fileName, bitmap);
}
public static String saveFile(Context c, String filePath, String fileName, Bitmap bitmap) {
byte[] bytes = bitmapToBytes(bitmap);
return saveFile(c, filePath, fileName, bytes);
}
public static byte[] bitmapToBytes(Bitmap bm) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(CompressFormat.JPEG, 100, baos);
return baos.toByteArray();
}
public static String saveFile(Context c, String filePath, String fileName, byte[] bytes) {
String fileFullName = "";
FileOutputStream fos = null;
String dateFolder = new SimpleDateFormat("yyyyMMdd", Locale.CHINA)
.format(new Date());
try {
String suffix = "";
if (filePath == null || filePath.trim().length() == 0) {
filePath = Environment.getExternalStorageDirectory() + "/Dingding/" + dateFolder + "/";
}
File file = new File(filePath);
if (!file.exists()) {
file.mkdirs();
}
File fullFile = new File(filePath, fileName + suffix);
fileFullName = fullFile.getPath();
fos = new FileOutputStream(new File(filePath, fileName + suffix));
fos.write(bytes);
} catch (Exception e) {
fileFullName = "";
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
fileFullName = "";
}
}
}
return fileFullName;
}
}
