andorid storagetotalandfree
1 在Setting应用中,storage 显示total and free code:
成都创新互联公司长期为1000多家客户提供的网站建设服务,团队从业经验10年,关注不同地域、不同群体,并针对不同对象提供差异化的产品和服务;打造开放共赢平台,与合作伙伴共同营造健康的互联网生态环境。为巫山企业提供专业的成都网站建设、网站设计,巫山网站改版等技术服务。拥有十多年丰富建站经验和众多成功案例,为您定制开发。
final File path = VolumeInfo.getPath(); final long freeBytes = path.getFreeSpace(); final long totalBytes = path.getTotalSpace(); final long usedBytes = totalBytes - freeBytes; final String used = Formatter.formatFileSize(context, usedBytes); final String total = Formatter.formatFileSize(context, totalBytes);
2 VolumeInfo.java 是hidden的,只能通过反射得到。代码如下:
try { StorageManager sManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE); Class class_StorageManager = StorageManager.class; Method method_getVolumes = class_StorageManager.getMethod("getVolumes"); List
得到数据: 08-18 17:28:31.087 32148-32148/ I/cyy1: freeBytes=190 MB 08-18 17:28:31.088 32148-32148/ I/cyy1: usedBytes=22.68 GB 08-18 17:28:31.088 32148-32148/ I/cyy1: id=private 08-18 17:28:31.088 32148-32148/ I/cyy1: freeBytes=9.90 MB 08-18 17:28:31.088 32148-32148 I/cyy1: usedBytes=22.84 GB 08-18 17:28:31.088 32148-32148/ I/cyy1: id=emulated
其中emulated 是external stroage的数据。而private 是data的数据 3 可以通过以下code验证: File path = Environment.getExternalStorageDirectory(); StatFs stat = new StatFs(path.getPath()); long blockSize = stat.getBlockSizeLong(); long blockCount = stat.getBlockCountLong(); long availableBlocks = stat.getAvailableBlocksLong(); long avaibByte = stat.getAvailableBytes(); Log.i("cyy","avaibByte="+Formatter.formatFileSize(context,avaibByte)); long free= stat.getFreeBytes(); Log.i("cyy","free="+Formatter.formatFileSize(context,free)); String totalSize = Formatter.formatFileSize(context, blockCount*blockSize); String availableSize = Formatter.formatFileSize(context, availableBlocks*blockSize); Environment.getExternalStorageDirectory() 跟emulated 数据一致;Environment.getDataDirectory() 和private数据一致。
分享文章:andorid storagetotalandfree
文章URL:http://scjbc.cn/article/jsgpdj.html