custom content provider example in android

Content provider as an Android ApplicationProgramOne of the four main components is to achieve data sharing among applications and enhance application reuse. For example, You Need To Obtain Address Book information on your mobile phone during development, in this case, you do not need to re-develop the whole process of

Summary of the content provider database of Android system 1. SMS DatabaseString struriinbox = "content: // SMS ";Uri urisms = URI. parse (struriinbox );Cursor c_groups = managedquery (urisms, new string [] {"date", "person"}, select, null, "date DESC "); Strcolumnname = _ id strcolumnvalue = 48 // Short Message seria

) {Emailindex = Email.getcolumnindex (ContactsContract.CommonDataKinds.Email.DATA);}35-7-3: Same as Get valuewhile (Email.movetonext ()) {Email = email.getstring (Emailindex);}If you feel trouble, you can use the following code directly:Note: Please add permissions and examplesToast.maketext (Getapplicationcontext (), "Getting Information", 0). Show ();Contentresolver resolver = This.getcontentresolver ();cursor cursor = resolver.query (URI, NULL, NULL, NULL, NULL);int contactidindex = 0;int nam

The best way to understand ContentProvider is to try it yourself. The following describes how to use a built-in contacts contentprovider. 1. Create a project, Provider. 2. Code in the Main.xml. 3. Code in the Provideractivity.java. The public class Provideractivity extends Listactivity {/** called ' when the ' activity is ' is a. */@Overr IDE public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);

Content Provider is primarily used to implement data sharing between different applications, and the content provider consists of two parts: using an existing content provider to read and manipulate the data in the corresponding p

Special points to note for "0":In the creation of the "0.1" database, the ID of the first column must be preceded by an underscore;"1" Content provider ContentProvider instance"1.1" Create a database"1.2" Take out the dick and Harry data;"1.3" Querying data from the command line"1.4" Method of changing the encoding entry for DOS toolsThere is a garbled way to change the DOS encoding:"1.5" Data curd: Program

The ContentProvider MIME type has two methods to return the MIME type. GetType () is a method implemented for any provider. GetStreamTypes () If your provider provides files, this method is expected to be implemented. The getType () method of table MIME types returns a String in MIME format, which describes the data type calculated by the content URI parameter. U

Android also provides a ContentProvider (content provider) that can provide data to other apps, but not often, except for apps developed by the same company that can provide data to different apps. Although it is one of the four components of Android, the usage is not complicated. Create an Activity, set up three butto

The data persistence techniques previously learned include file storage, sharedpreferences storage, and database storage technology that can only be accessed by the current application. While both the mode_world_readable and mode_world_writeable modes of operation are available in file storage and sharedpreferences storage, data sharing between different applications can be achieved, However, these two modes have been deprecated in the Android4.2 version. Currently, the

Android four components of the content provider--contentprovider 1, what is the Contentprovidercontentprovider app to share the data in other applications, To provide the method of adding and removing changes ContentProvider unifies the way data is accessed, without having to take different access policies for different data types ContentProvider encapsulate the

follows: Browser stores browser bookmarks, browsing history, and more. Calllog storage missed calls, call records, and so on. Contacts Store contact details. Mediastore stores media files, such as audio, video, pictures, etc. Some configuration information for the Settings storage device. In addition to these built-in contentprovider, you can create your own contentprovider. To query for a contentprovider, you need to specify a query string in the form of a URI, specifying a row. The URI

In addition to the query URI manually written, you can also use the URI query constant built in Android. For example, in addition to content: // contacts/people, you can write this assignment statement. Uri allcontacts = contactscontract. Contacts. content_uri; Some Android built-in predefined query string con

SQLite is a lightweight database designed for embedded devices. It has only five data types: Null: NULL Integer: integer Real: Floating Point Number Text: String BLOB: Big Data In SQLite, the Boolean and date types are not specifically designed, because the boolean type can replace true and false with integer 0 and 1, the date type can have text, real, and integer values in a specific format instead of display. To facilitate the operation of the date type, SQLite provides a set of functions. For

In addition to using your own manual write query Uri, you can also use the built-in URI query constants for Android. For example, in addition to using Content://contacts/people, you can write this assignment statement. Uri allcontacts = ContactsContract.Contacts.CONTENT_URI; Some of the built-in predefined query string constants for

querying the system's contact data. But what's so strange about the incoming URI parameter, why didn't you call the Uri.parse () method to parse a content URI string? This is because the ContactsContract.CommonDataKinds.Phone class has already done the encapsulation for us, providing a Content_uri constant, which is the result of parsing it using the Uri.parse () method. We then iterate over the Cursor object, taking the contact name and phone number

Projections The second parameter of managedquery () (the third parameter of the cursorloader class) controls the number of returned columns in the query. In the previous Code, null is passed in, that is, all columns are obtained. Cursor c; if (android.os.Build.VERSION.SDK_INT You can create an array to specify the columns to query. Uri allContacts = ContactsContract.Contacts.CONTENT_URI; String[] projection = new String[] { ContactsContract.Contacts._ID,

Problem: Im trying to implement mapview example which is defined on Android Hello views example but now Im facing failed to find provider info for com. Google. settings error... Solution: The mapview example doesn't set API key by default. So you must set it. Here is step

Android edittext + listview advanced implementation: custom filter for the content in the search listview, edittextlistview The last time we directly used the arrayadapter and the simple_list1 layout file that comes with the system. however, in development, we basically won't use such a simple cell. Next we will talk about how to customize our own filters so that

provide some hints to the print frame and pre-set some options for the previous print cycle, which can improve the user experience. You can also use this parameter to set options that are more suitable for printing content, such as when printing a photo, you can set the orientation of the print to the direction of the photo itself. Create a print adapterThe print adapter is connected to the Android pr

Custom view has always been a hurdle for Android developers. The relationship between view and ViewGroup From view and ViewGroup relationship, ViewGroup inherits view. View subclasses, mostly functional controls, provide the style to draw, such as Imageview,textview, and ViewGroup subclasses, used to manage the size of controls, locations, such as Linearlayout,relativelayout, As you can see from the figu