Created
June 22, 2015 12:26
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[Android][Lollipop]Android5.0で可能になったSDカードへの書き込みを試す ref: http://qiita.com/wasnot/items/287d191c7da40f2e6080
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// preferenceなどに保存しておいたURiを取り出します。 | |
Uri treeUri = PreferenceUtil.getSharedPreferenceUri(); | |
// SDカードのdocumentを作成します。 | |
DocumentFile sdcard = DocumentFile.fromTreeUri(mContext, treeUri); | |
// そこからファイルをたどっていく必要があります。 | |
DocumentFile nextDocument = document.findFile("test"); | |
: | |
// APIを通じてIOStreamを作りたいときはDocumentFileを使うと便利です。 | |
DocumentFile targetDocument = getDocumentFile(file, false); | |
OutputStream outStream = Application.getAppContext(). | |
getContentResolver().openOutputStream(targetDocument.getUri()); | |
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// JavaのFileを扱うように自由に書き込みもできます。 | |
// ただしSAFのAPIを介する必要があります。 | |
// また、一度付与されたuriは保持しておく必要があります。 | |
// Create a new file and write into it | |
DocumentFile newFile = pickedDir.createFile("text/plain", "My Novel"); | |
try { | |
OutputStream out = getActivity().getContentResolver().openOutputStream(newFile.getUri()); | |
out.write("A long time ago...".getBytes()); | |
out.close(); | |
} catch (FileNotFoundException e) { | |
e.printStackTrace(); | |
} catch (IOException e) { | |
e.printStackTrace(); | |
} | |
} | |
} |
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