![]() ![]() Here is sample code, you could refer to: private async void Button_Clicked(object sender, EventArgs e) Then call the function code in the shared project using DependencyService. doesn't provide the function to save the captured phto to the gallery.įor this function, please try to save the file on each platform. ![]() String column2Value= cursor.How to save a picture from camera to device gallery using Xamarin.Essentials 1.7 Media Picker Int column2Index= cursor.getColumnIndex("column2") String column1Value= cursor.getString(column1Index) Int column1Index= cursor.getColumnIndex("column1") Uri contentUri = Uri.parse("content://.") Ĭursor cursor = getContentResolver().query(contentUri, null, null, null, null) ![]() Then loop in the cursor to get each row use it’s moveToNext() method.The query method returns an object, if it is not null, then use it’s moveToFirst() method to move to the first row.query(Uri uri, String columnArray, String whereClause, String wherePlaceHolderValue, String orderB圜lause).GetContentResolver().delete(contentUri, whereClause, placeHolderValueArr) 3.4 Query Content Provider Data. delete(Uri providerUri, String whereClause, String conditionValueArr) Uri contentUri = Uri.parse("content://.").GetContentResolver().update(contentUri, contentValues, whereClause, placeHolderValueArr) 3.3 Delete Content Provider Data. update(Uri providerUri, ContentValues values, String whereClause, String conditionValueArr) Uri contentUri = Uri.parse("content://.").GetContentResolver().insert(contentUri, contentValues) 3.2 Update Content Provider Data. insert(Uri providerUri, ContentValues values) Uri contentUri = Uri.parse("content://.") ĬontentValues contentValues = new ContentValues().Uri contentUri = Uri.parse("content:///userinfo") 3.1 Insert Data To Content Provider. Before process data operation, you should first get the content provider URI instance using below method.This is something like SQLite database operation. Then you can invoke ContentResolver‘s method to insert, delete, update and query data that another content provider shared.ContentResolver contentResolver = getContentResolver() Generally the ContentResolver instance can be obtained by Activity‘s getContentResolver() method. To get data from a content provider, you need to use a ContentResolver instance in your app.For example, android phone contacts, short message system, and android media library. Each android application can be a content provider.Below is an android content URI example.The different paths will return different data. path: This part is used to distinguish different shared data in one android content provider app.authority: This part is used to distinguish different content provider app to avoid conflict, so generally it is the app package name.schema: This is the content URI protocol, it’s value is content in general.The content URI format is like this schema://authority/path.Content URI is a unique resource identifier that the content provider app provides for the client app to access it’s shared data.At present, the use of a content provider is the standard way for Android to share data across applications.By using a content provider, users can choose to share only some part of the data in one application, thus can avoid privacy data leaks in the program.
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