------------转自csdn
public static String getPath2uri(Activity context, Uri fileUri) {
if (context ==null || fileUri ==null)
return null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, fileUri)) {
if (isExternalStorageDocument(fileUri)) {
String docId = DocumentsContract.getDocumentId(fileUri);
String[] split = docId.split(":");
String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() +"/" + split[1];
}
}else if (isDownloadsDocument(fileUri)) {
String id = DocumentsContract.getDocumentId(fileUri);
Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri,null,null);
}else if (isMediaDocument(fileUri)) {
String docId = DocumentsContract.getDocumentId(fileUri);
String[] split = docId.split(":");
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;
}
String selection = MediaStore.Images.Media._ID +"=?";
String[] selectionArgs =new String[] { split[1] };
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}// MediaStore (and general)
else if ("content".equalsIgnoreCase(fileUri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(fileUri))
return fileUri.getLastPathSegment();
return getDataColumn(context, fileUri,null,null);
}
// File
else if ("file".equalsIgnoreCase(fileUri.getScheme())) {
return fileUri.getPath();
}
return null;
}
public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor =null;
String[] projection = { MediaStore.Images.Media.DATA };
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,null);
if (cursor !=null && cursor.moveToFirst()) {
int index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
return cursor.getString(index);
}
}finally {
if (cursor !=null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri to check.
* @return
* URI权限是否为ExternalStorageProvider
* Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return
* URI权限是否为google图片
* Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return
* URI权限是否为DownloadsProvider.
* Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return
* URI权限是否为MediaProvider.
* Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
}
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