查询有关文件android的信息
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对于内容：URI，我使用ContentProvider / Contentresolver检索有关修改日期，大小和数据的信息。我想对文件URI做同样的事情，但是当我尝试以下代码时：
CursorLoader loader = new CursorLoader(this, uri, proj, null, null, null);
Cursor cursor = loader.loadInBackground();
没有找到相关结果
已邀请:
1 个回复
栖很钾是狠
File f = new File(\"/data/cat.jpg\"); //Size of file in bytes Long size = f.length(); //Time of when the file was last modified in microseconds Long lastModified = f.lastModified(); //The bytes of the file. This gets populated below byte[] fileData = new byte[(int)f.length()]; try { FileInputStream fis = new FileInputStream(f); int offset = 0; int bytesActuallyRead; while( (bytesActuallyRead = fis.read(fileData, offset, 1024)) > 0) { offset += bytesActuallyRead; } } catch(Exception e) { }