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
Expandablelistview is a view with a vertical scrolling display of level two list items, unlike ListView, which can have two layers: each layer can be expanded independently and displayed with its subkeys.Friends QQ list, you can expand, you can put up, in Android, the past is more than ListView, although you can implement the display of the
Mactiondownx and Mactiondowny, and then action_move the incident, we first have to judge, this judgment is two steps, the first step, judge this action_move event, The position of the current event CurX and Cury whether the distance recorded on the x axis and on the y-axis and Action_down has exceeded the Touch_slop value, which is the threshold that Android uses to determine if a slide should be made, and the second step, We want to further determin
Document directory
Solution:
Solution:
Http://my.oschina.net/haquanwen/blog/54394
Listview is a commonly used display control. The default background is the same transparent color as the system window. If a background image or background color is added to listview, The listview will be black when scrolling, because, during scrolling, when the view in the list is re-painted, the system still uses the default transparent color. The color value is # f
Android interface component ---- List View, Android component ---- View
The ListView list view is the most common component in Android. It displays the list items to be displayed in a vertical
An Android application requires permissions to call functions of some android systems. An android application may be called by other applications. Therefore, you must declare the permissions required to call the Android Application. In addition to frequently-used permissions, remember to be familiar with them. There ar
Catalogue
Android Studio first Run detects Android SDK and updates, and for well-known reasons we will "unable to access Android SDK add-on list", and everyone is generally configured in advance Androi D SDK, when you really need to update the SDK Manager to manually update it.Solution:In the
If you have multiple Android devices (including Android emulators) connected to your PC, you will need to use the Adb-s DeviceID shell when you enter the console. More trouble, this article has written a shell script file (need to be used under Linux or OS X, Windows needs to be newly written with bat or cmd).The basic idea is to use the ADB devices command to scan how many
Download the album list and source code for android (4). Download the android source code
The functions of this project are as follows:Obtain the mobile phone album. Click each album to go to the image list page of the album. You can select multiple images on the image list
Enter the command:Lianxumacdemac-mini-2:hello-jni lianxumac$ Android list targetsAvailable Android Targets:----------Id:1 or "android-7"Name:android 2.1Type:platformAPI Level:7Revision:3SKINS:HVGA, QVGA, WQVGA400, WQVGA432, WVGA800 (default), WVGA854Tag/abis:default/armeabi----------Id:2 or "
If you have multiple Android devices (including Android emulators) connected to your PC, you will need to use the Adb-s DeviceID shell when you enter the console. More trouble, this article has written a shell script file (need to be used under Linux or OS X, Windows needs to be newly written with bat or cmd).The basic idea is to use the ADB devices command to scan how many
information from the system service (allowsan application to retrieve state dump information from systemservices .)Android. Permission. expand_status_barAllows a program to expand and contract to the status bar. The Android Development Network prompts that the program is similar to the pallet Program (allows an application to expand or collapse the statusbar.) in Windows Mobile .)
The Android device selection list is displayed, and the Shell script of the specified Android device Console is displayed.
If a PC is connected to multiple Android devices (including Android simulators), you must use adb-s deviceid shell when entering the Console. This artic
Android-tipsThis is a awesome list of tips for Android.If You is a beginner, this list would be being the first choice for you, and you have a difficult time.welcomestar andfork , your support is my greatest affirmation.
Learning Android so far, big and small pits have not stepped on, fortunately, in the powerf
[Go to] a menu bar for customizing the ArrayAdapter and custom Adapter in Android.
Today, I learned about the Spinner component. Using the Spinner component is equivalent to selecting a project from the drop-down list. The following describes how to use IT (using ArrayAdapter and custom Adapter respectively)
(1): Use ArrayAdapter for data adaptation:
①: First define a layout file:
1
[Note:] The above sp
List Implementation of multiple android la S and android la s
Recently, there is a list effect that requires a list with multiple la S. The final result is as follows:
I also asked my colleagues and friends in the Development Group, but they didn't get the optimal implem
Android Launcher: get the list of apps installed on your mobile phone. Android launcher
The most important of Launcher is to obtain the entries and icons of all application lists. Generally, there are two methods to obtain them:
PackageInfo
ResolveInfo
Run and obtain the Launcher of all apps and allow click events to go to the application.
The following two met
List of common error types in Android development and common errors in androidThis is my first blog. I will always add errors that I encountered during Android development, used to record the pitfalls I have stepped on during development ---------------------- split line ----------------------------------- ClassCastException type conversion Errors often occur whe
install the SDK in the subsequent interface.Since all is the next step, the operation is very simple, here is not introduced. Although google.com by the wall, but nearly two years to download the SDK speed is OKhttps://developers.google.cn/Google developed home, install the SDK and Android studio, or through the google.com, but the speed will be fast.Second: Set the first open as, do not download the SDK1. In the installation directory of this
Learn android from scratch (ListView data list display component. 21 .)Similar to ScrollView, there is also a list component (ListView) that can add multiple components to the ListView to achieve the scrolling display effect of the component, the ListView component itself also supports the corresponding ListView class. You can operate the ListView class to comple
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