mouse cursor for android

Android custom Cursor has a small problem. In many cases, Android applications use SQliter to store a large amount of data. Using sqlliter cannot help but deal with cursor. flexible use of cursor saves a lot of trouble. For example, you can combine your data in a virtual tab

Copy Code code as follows: Import android.app.ListActivity; Import Android.database.Cursor; Import Android.os.Bundle; Import Android.provider.Contacts.Phones; Import Android.widget.ListAdapter; Import Android.widget.SimpleCursorAdapter; /** * A List View example where the * Data comes from a cursor, and a * Simplecursorlistadapter is used to map all item to a two-line * Display. */ public class List3 extends Listactivity { @Overr

The cursor ListView provides index tags so that you can quickly locate list items.It can also be called index ListView. Some people call it Tweaked ListView, which may be more vivid.I understand everything in the figure: It is the drag block on the right, which is very simple:Copy code It can also be written in the java Background: Copy code When the data volume is large, the so-called "cursor" on the right

Public void showallperson (sqlitedatabase dB) {// todo auto-generated method stubcursor cursor = dB. query ("user", new string [] {"name", "phone"}, null, null); system. out. println (cursor. getcount (); While (cursor. movetonext () {int nameindex = cursor. getcolumnindex ("name"); int phoneindex =

Objectivepreviously written on an Android application, in reply to the post insert expression when there is a bug, that is, can not be specified in the EditText at the cursor inserted in the expression string, each added expression string ran to the end of the text. Analysis of the APK source code, found in the expression Tray onclick response event did not correctly handle the expression string Add method,

of item and just display the small icon before pressing. Press to expand the displayItem.setactionview (Mysearchview); }@Override Public Boolean Onquerytextsubmit(String query) {//Do not care whether or not to submit. Processing has been made when the contents of the query have changed return true; }@Override Public Boolean Onquerytextchange(String NewText) {String Newfilter =! Textutils.isempty (NewText)?NewText: null; //When the query condition does not change, do n

In Android development, depending on the needs of the project, some special styles need to be customized, such as: When using EditText, the background of the focus and the cursor picture are used by custom instead of the Android system default. These two days, this requirement is covered in the project and is now recorded as follows:First of all, the inspiration

Make sure the Cursor was initialized correctly before accessing data from itdetailed errors are: java.lang.IllegalStateException:Couldn ' t read row 0, col 2 from Cursorwindow. Make sure the Cursor was initialized correctly before accessing data from it.The reason for this is that I get a nonexistent field when I get the field in the cursor, for example, I was go

1. Get the cursor position [java] int index = Edittext.getselectionstart (); int index = Edittext.getselectionstart (); 2. Insert character at cursor [java] int index = Edittext.getselectionstart (); Editable Editable = Edittext.gettext (); Editable.insert (Index, "AAAA"); int index = Edittext.getselectionstart (); Editable Editable = Edittext.gettext (); Editable.insert (Index, "AAAA"); 3. Remove the pre-

1. Get to the location where the cursor is locatedint index = Edittext.getselectionstart ();2. Inserting characters at the cursor locationint index = edittext.getselectionstart (); Editable Editable =" hahaha "); 3. Delete the character before the cursor (where the cursor begins to delete)int index = edittext.getsele

Because the project needs, need to listen to the cursor position changes in real-time, the online proposed with Textwatcher and Ontouchlistener call Contenttext.getselectionstart () is the last position obtained.Just rewrite the onselectionchanged to get the latest cursor position. Public classNotecontentedittext extends EditText { PublicNotecontentedittext (Context context, AttributeSet Attrs) {Super (cont

1.Cursor C = ...;For (C.movetofirst ();! c.isafterlast (); C.movetonext ()) {C...}2.Cursor CURSOR=...LFor (Cursor.movetofirst ();!cursor.isafterlast (); Cursor.movetonext ()) {Cursor.getstring (Cursor.getcolumnindex ("Name"));Cursor.getint (Cursor.getcolumnindex ("CellPhone"));Cursor.getint (Cursor.getcolumnindex ("Phone"));Cursor.getstring (Cursor.getcolumnindex

Because of the project needs, need to get EDITTEXT cursor current line number, but turned over the Android document, ask all degrees Niang did not find, so in the blog Park asked questions, met the kind people told me the answer, with the following code for people in need　　1 Private intgetcurrentcursorline (EditText EditText) {2 intSelectionStart =Selection.getselectionstart (Edittext.gettext ());3L

because the project to use a custom random keyboard, so you have to shield the system soft keyboard, but in the 4.0 test system, using the Edittext.setinputtype (Inputtype.type_null) method is able to hide the keyboard, However, the cursor is also hidden, so it cannot be used.3.0 The following versions can be implemented with Edittext.setinputtype (Inputtype.type_null) . or set Edittext.setkeylistener (null) to implement. 3.0 or later in addition to c

The cursor object uses rows to store data, and when you use it to get data, you must know the data name of each column and his data type to get the object dataA common approach:. Close () Close the resource: Remember that all resource objects must be actively closed after they are used. MoveToNext () move to the next line. Movetofirst () move to the first line. getColumnCount () returns the number of columns. Getcolumnindex ("") returns the column nam

Android: Get the row number of the EditText cursorAs a result of the project requirement, You need to obtain the row number of the EditText cursor currently located. However, you did not find the row number after reading the Android document or asking du Niang, so I asked a question in the blog and met a friendly person who told me the answer, copy the Code 1 pri

the actual font size that is displayed, and the actual font size should be multiplied by this value by Textscalex. By default, the unit is PX, other cases can use another method of GetTextSize overload, return the corresponding value according to the unit;4, Get EditText Textscalex (this value is used to calculate the actual size of the font display);After you get the above value, you can calculate the actual size of the character. Here is a description: Chinese characters, numbers, capital let

Online and many methods, all failed, and finally found the following methods://Hide System Keyboard Public voidHidesoftinputmethod (EditText ed) {GetWindow (). Setsoftinputmode (WindowManager.LayoutParams.SOF T_input_state_always_hidden); intCurrentVersion =Android.os.Build.VERSION.SDK_INT; String MethodName=NULL; if(CurrentVersion >= 16) { //4.2MethodName = "Setshowsoftinputonfocus"; } Else if(CurrentVersion >= 14) { //4.0MethodName = "Setsoftinputshownonfocus";

In Qt on Android: signals and slots for Qt Quick event processing, this article describes how to use built-in signals in QML and how to customize signals, this time, let's take a look at how to handle mouse, keyboard, timer, and other events. These processing times are usually completed through signals. I'm participating in the CSDN blog contest. please vote for my article Qt on

If you use more than one computer at the same time, may have already heard Synergy, Input Director, unbounded mouse and other magical tools, they can let you only use a set of mouse can control the operation of many different computers, so that the mouse free "shuttle" different screen, very convenient.But the above software can only support win, MAC, Linux and o