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-rw-r--r--app/src/main/java/utils/ContentProviderUtils.java148
1 files changed, 148 insertions, 0 deletions
diff --git a/app/src/main/java/utils/ContentProviderUtils.java b/app/src/main/java/utils/ContentProviderUtils.java
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+++ b/app/src/main/java/utils/ContentProviderUtils.java
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+package utils;
+
+import android.annotation.TargetApi;
+import android.content.ContentUris;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Environment;
+import android.provider.DocumentsContract;
+import android.provider.MediaStore;
+
+/**
+ * Created by Paul Burke
+ * http://stackoverflow.com/questions/20067508/get-real-path-from-uri-android-kitkat-new-storage-access-framework
+ */
+
+public class ContentProviderUtils {
+ /**
+ * Get a file path from a Uri. This will get the the path for Storage Access
+ * Framework Documents, as well as the _data field for the MediaStore and
+ * other file-based ContentProviders.
+ *
+ * @param context The context.
+ * @param uri The Uri to query.
+ * @author paulburke
+ */
+ @TargetApi(Build.VERSION_CODES.KITKAT)
+ public static String getPath(final Context context, final Uri uri) {
+
+ final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
+
+ // DocumentProvider
+ if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
+ // ExternalStorageProvider
+ 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];
+ }
+
+ // TODO handle non-primary volumes
+ }
+ // DownloadsProvider
+ 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);
+ }
+ // MediaProvider
+ 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);
+ }
+ }
+ // MediaStore (and general)
+ else if ("content".equalsIgnoreCase(uri.getScheme())) {
+ return getDataColumn(context, uri, null, null);
+ }
+ // File
+ else if ("file".equalsIgnoreCase(uri.getScheme())) {
+ return uri.getPath();
+ }
+
+ return null;
+ }
+
+ /**
+ * Get the value of the data column for this Uri. This is useful for
+ * MediaStore Uris, and other file-based ContentProviders.
+ *
+ * @param context The context.
+ * @param uri The Uri to query.
+ * @param selection (Optional) Filter used in the query.
+ * @param selectionArgs (Optional) Selection arguments used in the query.
+ * @return The value of the _data column, which is typically a file path.
+ */
+ public 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 column_index = cursor.getColumnIndexOrThrow(column);
+ return cursor.getString(column_index);
+ }
+ } finally {
+ if (cursor != null)
+ cursor.close();
+ }
+ return null;
+ }
+
+
+ /**
+ * @param uri The Uri to check.
+ * @return 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 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 Whether the Uri authority is MediaProvider.
+ */
+ public static boolean isMediaDocument(Uri uri) {
+ return "com.android.providers.media.documents".equals(uri.getAuthority());
+ }
+}