[英]Get Uri from real Path
我有一個像“file:///mnt/sdcard/3dphoto/temp19.jps”這樣的文件的真實路徑,我怎樣才能得到像“content:// media / external / images / media / 1”這樣的uri?
我對我的文件瀏覽器活動有同樣的問題...但你應該知道文件的contenturi只支持圖像,音頻和視頻等媒體商店數據....我正在通過選擇圖像來獲取圖像內容uri sdcard ....嘗試這段代碼......可能會對你有用...
public static Uri getImageContentUri(Context context, File imageFile) {
String filePath = imageFile.getAbsolutePath();
Cursor cursor = context.getContentResolver().query(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Images.Media._ID },
MediaStore.Images.Media.DATA + "=? ",
new String[] { filePath }, null);
if (cursor != null && cursor.moveToFirst()) {
int id = cursor.getInt(cursor
.getColumnIndex(MediaStore.MediaColumns._ID));
Uri baseUri = Uri.parse("content://media/external/images/media");
return Uri.withAppendedPath(baseUri, "" + id);
} else {
if (imageFile.exists()) {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.DATA, filePath);
return context.getContentResolver().insert(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
} else {
return null;
}
}
}
在文件路徑中轉換“file:// ...”,使用以下代碼查找項目的ID,然后將其附加到提供者URI。 此外,基於文件擴展名,使用正確的提供程序(例如MediaStore.Video.Media.EXTERNAL_CONTENT_URI或MediaStore.Image.Media.EXTERNAL_CONTENT_URI)
/**
* Given a media filename, returns it's id in the media content provider
*
* @param providerUri
* @param appContext
* @param fileName
* @return
*/
public long getMediaItemIdFromProvider(Uri providerUri, Context appContext, String fileName) {
//find id of the media provider item based on filename
String[] projection = { MediaColumns._ID, MediaColumns.DATA };
Cursor cursor = appContext.getContentResolver().query(
providerUri, projection,
MediaColumns.DATA + "=?", new String[] { fileName },
null);
if (null == cursor) {
Log.d(TAG_LOG, "Null cursor for file " + fileName);
return ITEMID_NOT_FOUND;
}
long id = ITEMID_NOT_FOUND;
if (cursor.getCount() > 0) {
cursor.moveToFirst();
id = cursor.getLong(cursor.getColumnIndexOrThrow(BaseColumns._ID));
}
cursor.close();
return id;
}
有時,在將一個媒體文件添加到設備的存儲中后,MediaProvider不會立即刷新。 您可以使用此方法強制刷新其記錄:
/**
* Force a refresh of media content provider for specific item
*
* @param fileName
*/
private void refreshMediaProvider(Context appContext, String fileName) {
MediaScannerConnection scanner = null;
try {
scanner = new MediaScannerConnection(appContext, null);
scanner.connect();
try {
Thread.sleep(200);
} catch (Exception e) {
}
if (scanner.isConnected()) {
Log.d(TAG_LOG, "Requesting scan for file " + fileName);
scanner.scanFile(fileName, null);
}
} catch (Exception e) {
Log.e(TAG_LOG, "Cannot to scan file", e);
} finally {
if (scanner != null) {
scanner.disconnect();
}
}
}
另一個簡單方法:
File file = new File(Path);
Uri uri = Uri.fromFile(file);
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