simplecursoradapter

简单使用SimpleCursorAdapter

由 随声附和 提交于 2019-12-15 16:33:14
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 如果使用 Sqlite ，建议和ContentProvider结合使用。这样数据库的生命周期就不用自己管了。然后，如果要在比如ListView中显示，可以使用CursorAdapter。简化的办法是使用子类SimpleCursorAdapter。 以下就介绍一下使用sqlite+content provider+cursor adapter的最简单实现示例。太简单了，示例如图： 首先，要有个Content provider，如不了解如何实现，请参考 编写最简单的Content Provider 和 在Content provider实现中使用SQLiteOpenHelper ，下面写的是结合二者的： public class RiverContentProvider extends ContentProvider { public static final Uri CONTENT_URI = Uri .parse("content://com.easymorse.cp.rivers"); public static final String _ID = "_id"; public static final String NAME = "name"; public static final String

Fetching all Contacts and showing them in listview

由 两盒软妹~` 提交于 2019-12-13 08:26:34
问题 I am showing all contacts in listview and it is working great. But I also want to add image to listview. Searched alot but didn't find any good tutorial. Please suggest some tutorials for showing contact images on listview. Following is my code. Cursor cur = getContacts(); ListView lv = getListView(); String[] fields = new String[] {ContactsContract.Data.DISPLAY_NAME }; adapter = new SimpleCursorAdapter(this, R.layout.contacts_list_row, cur, fields, new int[] { R.id.title}, 0); lv.setAdapter

Android ImageButton in ListView row clicklistener not responding

由 ε祈祈猫儿з 提交于 2019-12-13 05:19:23
问题 I have a ListView with rows that contain ImageButtons (shown as 'O' below): [<-------TextView-------> O O O] [<-------TextView-------> O O O] I am finding that the first row has intermittent behaviour. At first it appeared that the image button onclicklisteners were not being called for just the top row. What I have found is that the onclicklisteners for the buttons do get called, but the clicks seem to be queued/buffered until I click on the row itself. I will happily post some code if

SimpleCursorAdapter does not load external sqlite database: “_id” error

由 落爺英雄遲暮 提交于 2019-12-13 04:26:58
问题 The error says: column _id does not exists but the column is in the database (set as primary key) and this one is located in the external SD folder. I'm trying to return the values contained in the database on the initial load of the activity but it seems like the cursor is not returning anything. public class ComponentsDbAdapter { public static final String COLUMN_ID = "_id"; public static final String COLUMN_SUBSTRUCTURE = "substructure"; public static final String COLUMN_TYPE = "type";

How to change backgrounds for specific rows using SimpleCursorAdapter

由 我的未来我决定 提交于 2019-12-13 03:53:54
问题 I'm trying to create a listview generated from information out of my SQLite DB. I currently have the code set up to just display each row accordingly and populate 3 textviews with data. I would like to be able to use some sort of If statement to check to see if one of values is "Room1" and then set the background of that row to a certain color. This way each row in the list will have a different background based on what "room" the data is for. I have tried extending SimpleCursorAdapter but I

Android SQLite Column Not Found Error When Executing Raw Query

由 て烟熏妆下的殇ゞ 提交于 2019-12-13 03:39:31
问题 I am making an android app that searches for restaurants in a SQLite database. I currently use a custom loader (that I found online) to load a cursor from the database and then take that cursor and populate a listview with a SimpleCursorAdapter. I want all the data to be bound but only the name of the restaurant to be displayed (because when I click on a list item I want to get all the data and send it to a new activity that displays the data). If I specify the restaurant name and restaurant

filling listview using cursoradapter

由 不问归期 提交于 2019-12-13 03:37:47
问题 i implemented Custom cursor adapter in my listview. but the listview is always null. Let me explain my codes: OfflineAdapter offlineadapter = new OfflineAdapter(ctx, null); listview.setAdapter(offlineadapter); There's nothing really to explain Here. Moving into my offlineadapter Class: public class OfflineAdapter extends CursorAdapter { public com.androidarabia.lazylist.ImageLoader imageLoader; @SuppressWarnings("deprecation") public OfflineAdapter(Context context, Cursor c) { super(context,

How to use custom font in SimpleCursorAdapter for a list view at Searchable Dictionary App?

由 半世苍凉 提交于 2019-12-13 01:02:36
问题 I am new in android. this is my first project.I am trying to make a Name dictionary in bangla so i need to change the list view font. I already added the font into the asset folder.. private void showResults(String query) { Cursor cursor = managedQuery(DictionaryProvider.CONTENT_URI, null, null, new String[] {query}, null); if (cursor == null) { // There are no results mTextView.setText(getString(R.string.no_results, new Object[] {query})); } else { // Display the number of results int count

simplecursoradapter not working

由 亡梦爱人 提交于 2019-12-12 09:11:43
问题 I am using a database, getting a cursor out of it and then using a simplecursoradapter to populate a listview. I can't seem to figure out why the app crashes on creating a new simplecursoradapter. My cursor is contained in a singleton object. I have a reference to it through the data variable in this class. String[] columns = new String[] {"item", "quantity", "days"}; int[] to = new int[] { R.id.nametext, R.id.quantitytext, R.id.dayslefttext}; SimpleCursorAdapter sCA = new SimpleCursorAdapter

Approach to populate the Expandable List View with local SQlite database

由 扶醉桌前 提交于 2019-12-12 08:30:18
问题 I have a sqlite database in my application. I want to make an expandable list view with that. I am fixed with the approach I should take for that. Tried a lot to find a tutorial for the same, but could not find a single one, where one is populating the Expandable list with the local database. There is this one tutorial in the android site where they are filling the expandable list with the Contact detail in the phone. They are doing this from the content provider ExpandableList2.java So my
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