/**
* 删除所有缓存文件.
*
* @return true, if successful
*/
public static boolean clearDownloadFile() {
try {
File fileDirectory = new File(downloadRootDir);
deleteFile(fileDirectory);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* 删除文件.
*
* @return true, if successful
*/
public static boolean deleteFile(File file) {
try {
if (!isCanUseSD()) {
return false;
}
if (file == null) {
return true;
}
if (file.isDirectory()) {
File[] files = file.listFiles();
for (int i = 0; i < files.length; i++) {
deleteFile(files[i]);
}
} else {
file.delete();
}
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}