Android-使用Google Drive从文件选择器获取正确的Uri
作者：互联网
所以这是我的问题,我需要在手机中获取文件,然后将其上传到我的解析服务器.我为文件,下载,外部,媒体文件夹做了文件选择器,但是android文件选择器也建议使用GoogleDrive选项.所以我得到了Uri,但是我找不到访问该“本地副本”的方法.
我需要使用GoogleDrive SDK来访问它吗？还是Android不能足够聪明,给我一些方法来处理Uri？
我成功获取了文件名.
content://com.google.android.apps.docs.storage/document/
这是我的文件选择器和处理程序：
public static void pick(final Controller controller) {
final Intent chooseFileIntent = new Intent(Intent.ACTION_GET_CONTENT);
chooseFileIntent.setType("application/pdf");
chooseFileIntent.addCategory(Intent.CATEGORY_OPENABLE);
if (chooseFileIntent.resolveActivity(controller.getContext().getPackageManager()) != null) {
controller.startActivityForResult(chooseFileIntent, Configuration.Request.Code.Pdf.Pdf);
}
}
private static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
private static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
private static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
private static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
private static boolean isGoogleDriveUri(Uri uri) {
return "com.google.android.apps.docs.storage".equals(uri.getAuthority());
}
private static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = { column };
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
private static String getPath(Context context, Uri uri) {
if (DocumentsContract.isDocumentUri(context, uri)) {
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
} else if (isGoogleDriveUri(uri)) {
// Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
// if (cursor != null) {
// int fileNameIndex = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME);
// cursor.moveToFirst();
// Log.d("=== TAG ===", cursor.getString(fileNameIndex));
// Log.d("=== TAG ===", uri.getPath());
// cursor.close();
// }
} else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
} else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[] {split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
else if ("content".equalsIgnoreCase(uri.getScheme())) {
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
public static void upload(final Context context, final String name, final ParseObject dataSource, final String field, final Uri uri, final Handler handler) {
if (context != null && name != null && dataSource != null && field != null && uri != null) {
String path = getPath(context, uri);
if (path != null) {
final File file = new File(path);
dataSource.put(field, new ParseFile(file));
dataSource.getParseFile(field).saveInBackground(new SaveCallback() {
@Override
public void done(ParseException e) {
if (e == null) {
if (handler != null) {
handler.success();
}
}
}
}, new ProgressCallback() {
@Override
public void done(Integer percentDone) {
if (handler != null) {
handler.progress(percentDone);
}
}
});
}
}
}
编辑：
我做了一些尝试,但是删除临时文件时遇到了问题
这是我的代码：
public static void copyFile(final Context context, final Uri uri, final ParseObject dataSource, final String field, final String name, final Data.Source target, final Handler handler) {
new AsyncTask<Void, Void, Boolean>() {
@Override
protected Boolean doInBackground(Void... params) {
try {
InputStream inputStream = context.getContentResolver().openInputStream(uri);
if (inputStream != null) {
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
byte[] bytes = new byte[1024];
int length;
while ((length = inputStream.read(bytes)) != -1) {
byteArrayOutputStream.write(bytes, 0, length);
}
dataSource.put(field, new ParseFile(name, byteArrayOutputStream.toByteArray()));
byteArrayOutputStream.close();
inputStream.close();
return true;
} else {
return false;
}
} catch (IOException e) {
e.printStackTrace();
return false;
}
}
@Override
protected void onPostExecute(final Boolean success) {
dataSource.getParseFile(field).saveInBackground(new SaveCallback() {
@Override
public void done(ParseException e) {
if (e == null) {
if (handler != null) {
handler.success();
}
}
}
}, new ProgressCallback() {
@Override
public void done(Integer percentDone) {
if (handler != null) {
handler.progress(percentDone);
}
}
});
}
}.execute();
}
最终编辑：
在这里我的代码是正确的,临时文件是由Parse自己创建并放入缓存的,因此不在我的范围内.希望他能帮上忙.
解决方法:
So i got te Uri but i can’t find a way to access that “local copy?”.
没有“本地副本”,您至少可以访问一个.
Or can’t android just be smart enough and give me methods to handle that Uri ?
使用ContentResolver和openInputStream()获得有关Uri标识的内容的InputStream.可以直接将其与“解析服务器”一起使用,也可以使用它为您控制的文件创建临时的“本地副本”.上载该本地副本,完成后将其删除.
Here is my file chooser and handler:
pick()很好. upload()可能很好；我没有使用过解析.该代码的其余部分是垃圾,是从先前的垃圾中复制的.它做出了许多毫无根据,不可靠的假设,并且不适用于任意应用程序(例如,通过FileProvider提供)中的Uri值.
标签：uri,google-drive-api,android 来源： https://codeday.me/bug/20191111/2018070.html