android-contentprovider

问题 In fact I have 2 Cursor s one is SQLite cursor, another one comes from ContentProvider - beneath it lies complicated SQLite query - but I don't have access to it. Both cursors has the same unique _ID field. In a pure SQL it would be really easy to join them using those id field, but not in my case, since 2nd Cursor is not SQLite query. I need to produce resulting joined Cursor . Neither CursorJoiner nor MergeCursor doesn't help me. Any ideas, clues, hints? 回答1: Option #1: Write your own

问题 I'm working on showing list of contacts with checkbox. I tried implementing my own cursor adapter and it is checkable. But once I check that value I want the contacts to be stored in ContactPerson object. But when I tried it is showing null pointer exception(That's why I commented out that code). My CursorAdapter code goes like this. ContactListAcitivity.java import android.app.Activity; import android.content.Context; import android.database.Cursor; import android.os.Bundle; import android

问题 I am trying to save a picture in an Android application. Here is my callback function: ShutterCallback myShutterCallback = new ShutterCallback(){ @Override public void onShutter() { Log.d(TAG, "shutter callback"); }}; PictureCallback myPictureCallback_RAW = new PictureCallback(){ @Override public void onPictureTaken(byte[] arg0, Camera arg1) { Log.d(TAG, "raw callback"); }}; PictureCallback myPictureCallback_JPG = new PictureCallback(){ @Override public void onPictureTaken(byte[] arg0, Camera

问题 For some reason, If I query the CallLog Content provider, I get maximum 500 results. Also, it seems I only get results up to 1 month ago (when my devices Phone app shows me about 8 months at the moment). I googled it, but all I found was 'Store 'CallLog.Calls' into another table' which offers no solution. This is my code: String[] strFields = { android.provider.CallLog.Calls.NUMBER, android.provider.CallLog.Calls.DURATION, android.provider.CallLog.Calls.DATE, }; Cursor cursor =

问题 I have a ContentProvider that abstracts the info I'm using for a CursorAdapter to populate a list. I'm building a SearchView in the action bar and want to attach a search ContentProvider to it. Can I use the same provider for this? Is it good design? The SearchView content would be the same as in #1, it's just used to search a massive listview of items. The ContentProvider code is below: public class WebSitesContentProvider extends ContentProvider { // database private UserDatabaseHelper

问题 My company wants to publish a library for android, so that other people can integrate our content easily in their custom apps. Now I am still very uncertain how I should provide the content. Right now I am using POJOs to provide the data in my project. I was following the debate "POJOs vs. Cursors" which turned out in favor of Cursors. I also have seen an example where somebody stores the parsed resource in a SQLLite-DB and accesses it later through Cursors. I know that Cursors have many

问题 Can any one told me if I have a list of contact and read them in my application and I want to set contact to favorite from my application directly, so that when I open my phone contact again I will be able to find contact in the favorite list of android phone. Please help 回答1: you must add permission to your application to be able to write to the contact content provider. android.permission.WRITE_CONTACTS android.permission.READ_CONTACTS After that you need to update the value for the STARRED

问题 I've implemented my custom ContentProvider and it has several URI s: The main one: //Return all items, uriType = ALLITEMS String BASEURI = "content://authority/items" and //Return all items in category #, uriType = ITEMS "content://authority/items/cat/#" //Return all items in category # starting with *, uriType = ITEMS_INITIAL "content://authority/items/cat/#/*" My Activity implements these Loader callbacks: @Override public Loader<Cursor> onCreateLoader(int id, Bundle arg1) { CursorLoader

问题 I tried running the program code soundclouddroid https://code.google.com/p/soundclouddroid/source/browse/ 1.2.2. I had another problem before I settled on Stackoverflow but now I have one and can not understand why it happens. My problem is: java.lang.RuntimeException: Unable to start activity ComponentInfo {es.manu.sd122.soundCloudDroid/es.manu.sd122.soundCloudDroid.CustomTrackListsActivity}: java.lang.IllegalArgumentException: Unknown URI content :/ / is .manu.sd122.provider.soundCloudDroid

问题 I am trying to detect screenshot on an Android app. I am using contentObserver to detect the change in the media directory, not using FileObserver because of known issue with it on Android M. Here is the code snippet: handlerThread = new HandlerThread("content_observer"); handlerThread.start(); final Handler handler = new Handler(handlerThread.getLooper()) { @Override public void handleMessage(Message msg) { super.handleMessage(msg); } }; getContentResolver().registerContentObserver(