package cn.ycbjie.ycaudioplayer.utils.file;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Environment;
import android.os.StatFs;
/**
* <pre>
* @author yangchong
* blog : www.pedaily.cn
* time : 2018/03/28
* desc : SD卡工具类
* revise:
* </pre>
*/
public class SDUtils {
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
public static long getAvailableSize() {
if (isMounted()) {
StatFs stat = new StatFs(getSDCardPath());
// 获得可用的块的数量
long count = stat.getAvailableBlocksLong();
long size = stat.getBlockSizeLong();
return count * size;
}
return 0;
}
/**
* 判断SDCard是否挂载
* Environment.MEDIA_MOUNTED,表示SDCard已经挂载
* Environment.getExternalStorageState()，获得当前SDCard的挂载状态
*/
private static boolean isMounted() {
return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
}
/**
* 获得SDCard 的路径,storage/sdcard
* @return 路径
*/
public static String getSDCardPath() {
String path = null;
if (isMounted()) {
path = Environment.getExternalStorageDirectory().getPath();
}
return path;
}
}
