android-contentprovider

问题 I wrote custom contentprovider that creates a database in sqlite3 with single table 'user_authentication'. While the db and table have been created on their respective onCreate() methods, I am getting an NullPointerException in the overriden insert method . Below is the method: public Uri insert(Uri uri, ContentValues initialvalues){ SQLiteDatabase sqlitedb = dbHelper.getWritableDatabase(); if(sUriMatcher.match(uri)!= TABLE){ throw new IllegalArgumentException("Unkown Uri"+uri); }

问题 Can someone explain how to use EXDATE when adding event to android calendar? The documentation is pretty unclear about the format in which the EXDATE should be put. I tried many formats, these are some of them: values.put(Events.EXDATE, "TZID=Europe/London:20130116T080000"); values.put(Events.EXDATE, "20130116T080000Z"); values.put(Events.EXDATE, "20130116T080000"); values.put(Events.EXDATE, "20130116"); but none of them works. Any idea how to make an event not appear on a particular date, if

问题 I have a content provider in on apk which is providing Rest Based Search results for multiple client apps. Basically, the client requests a cursor via content resolver, then fires an intent service request to trigger the search.. In the provider, the cursor is returned to a table, and each intent service request populates the corresponding table, and triggers a NotifyDataSetChanged. Works really well.. The only issue I am having is that if the Provider is killed for some reason (tested by

问题 I have constructed a simple query to find music on the sdcard of the Android emulator. I am using Android Studio. I placed 3 songs on the sdcard using adb push. However, the query is not finding the music files. Here is an image of the files on the sdcard in the Music folder: Here is the code that I am using to perform the query: ContentResolver musicResolver = getContentResolver(); Uri musicUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; Cursor musicCursor = musicResolver.query(musicUri,

问题 I use the following SQL command to create a products table on an Android client. CREATE TABLE IF NOT EXISTS 'products' ( '_id' INTEGER PRIMARY KEY AUTOINCREMENT, 'name' TEXT, 'serverId' INTEGER, 'modifiedAt' TIMESTAMP DEFAULT CURRENT_TIMESTAMP, UNIQUE ( 'serverId' ) ON CONFLICT REPLACE ); When I load data from a server and insert it into the local database, I use the following commands in the content provider to either update a row or insert new values. public int bulkInsert(Uri uri,

问题 I use the following SQL command to create a products table on an Android client. CREATE TABLE IF NOT EXISTS 'products' ( '_id' INTEGER PRIMARY KEY AUTOINCREMENT, 'name' TEXT, 'serverId' INTEGER, 'modifiedAt' TIMESTAMP DEFAULT CURRENT_TIMESTAMP, UNIQUE ( 'serverId' ) ON CONFLICT REPLACE ); When I load data from a server and insert it into the local database, I use the following commands in the content provider to either update a row or insert new values. public int bulkInsert(Uri uri,

问题 I have a working custom search suggestions class (via http://developer.android.com/guide/topics/search/adding-custom-suggestions.html). It currently returns one type of information - "product names". I've added some additional activities (screens) to my app so that if a person is on a product page, starting up a search should return results from "product names", but if they are in another activity, I would like the search suggestions to pull "manufacturer names". I saw Accessing appSearchData

问题 Below is the notepad sample code, why the android:authorities = com.google.provider.NotePad instead of using the project package name? and what exactly is android:authorities asking for? Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License

问题 Can any help with this, sure it is something simple but can't see it. Doing a bulkInsert to content provider (UserDictionary) but all inserts have same "word" value. Issue is Array of ContentValues. This is some test code I have: public void mClick(View v){ int batchSize = 25; ContentValues[] mValueArray = new ContentValues[batchSize]; List<ContentValues>mValueList = new ArrayList<ContentValues>(); ContentValues mNewValues = new ContentValues(); mNewValues.put(UserDictionary.Words.APP_ID,

问题 Part of my application involves saving a png file to my local files directory, and then shared via a content provider. I write the file via getContext().openFileOutput However, in my content provider, ParcelFileDescriptor will only open actual File objects. So trying to do this via a mocked out content provider using ProviderTestCase2 , the following code doesn't work: return ParcelFileDescriptor.open(new File(getContext().getFilesDir(), filename), ParcelFileDescriptor.MODE_READ_ONLY) This is