Android Installation Tip: Android SDK requires Android Developer Toolkit version 21.1.0 or above. (Error resolution Method)

Android Installation Tip: Android SDK requires Android Developer Toolkit version 21.1.0 or above. (Error resolution Method)This is mainly due to the incorrect version, the SDK and ADT versions.Solution Ideas:Open Eclipse-- Help--Install now

The difference between invalidate and postinvalidate in "Android" Android

There are two sets of methods for updating view in Android, one for invalidate and the other for Postinvalidate, where the former is used in the UI thread itself, while the latter is used in non-UI threads.Android provides the Invalidate method for

PHONEGAP Development Environment Building (Android)

1. First install Nodejs (http://nodejs.org/)2. Then enter NPM return at the command lineSuppose to appear:Indicates a successful installation3. InstallationNPM install-g Cordova4. Installing the JDKThe most troublesome thing here is the

Android Res/raw vs Assets

Common1. The files in both directories will be stored intact in the APK package after packaging, and will not be compiled into binary.Difference:The files in the 1.res/raw are mapped to the R.java file, and the files under the R.id.filename;assets

How to make an elf follow a touch point move

Source: http://blog.csdn.net/honghaier/article/details/8117903Mainly divided into three steps: 1, in the scene to create the wizard 2, enable the scene belongs to the Layer Cclayer response contact function 3, the scene belongs to the layer cclayer

Four ways to start activity in Android

There are four modes of activity in Android: Standard, Singletop, Singletask, SingleInstance.StandardThis is the activity by default, if you do not specify how to start the activity, the default is to start with standard. Each time the activity is

android4.4 Touch Point properties (down, move, up)

Typically, the application uses motionevent.getaction () when dealing with touch events to determine that the escalated touch point is Action_down, Action_move, or action_up, and then makes the processing logic of moving, zooming, and so on. Where

Android Circular rotation menu, and support for mobile transposition function

LZ recently took over the company a project, need to write a round rotation menu, and support the move between the menu moves, originally thought this demo should be online is a lot of, unexpectedly degree Niang also can not help me, empty rotation

How Android reads and writes files in Linux kernel

ObjectiveWelcome everyone I share and recommend useful code Snippets ~ ~StatementWelcome reprint, but please keep the original source of the article:Csdn:http://www.csdn.netRainy season o mo away: http://blog.csdn.net/luckkofBody[Description]How to

A workaround for CSS style loss when adding tags with jquery dynamic Append method

A new tag is typically added in jquery in the following way:var obj = " check box ';  Stitching tags by individual request $ ("# where Tag id"). append (obj); Add a stitched label with append$ ("# where Tag id"):   ListView ("Refresh"); Used when

Understanding the Android Gesture recognition

For the touchscreen, its native message simply presses, lifts, and moves these kinds of things, we just need to simply overload Ontouch or set the touch listener Setontouchlistener can be processed. However, in order to improve the user experience

Android Development Tips Summary (iii)

1. Press the return key in the interface to determine the visibility of a control, if visible, animate it to disappear, and the app does not exit.In the OnKeyDown method:if (keycode = = 4) {if (slidingmenu.getvisibility () = = view.visible) {Exiting

The messenger between Android components--intent

Booting from one activity to another activity can use the StartActivity () method or the Startactivityforresult () methodFirst: Start an activity directlyIntent Intent = new Intent (main.this, Secondactivity.class);StartActivity (Intent);Second type:

Android Bitmap Open Source image frame Analysis (Essence four)

Disk CacheThe main difficulty is in memory cache, disk cache is actually relatively simple, that is, the picture is loaded after the picture file saved to the local convenient next useSimilarly, the introduction of the official homepage (homepage

Proguard optimized Android logs

Android application development process, will generally join a variety of log printing, easy to debug code, Android.util.Log method is often used. If the app always outputs log.i or log.d content in the background, the overall efficiency of the

(Android Review) Basic use of ContentProvider

1. Some databases are not available on the outside.2, ContentProvider let a program in the data can let the B program use3, ContentProvider is mainly shared data. Contentobserver can be added to observe changes in the data4. Authorities in is

Solve the problem that the application of android3.0 version does not receive the boot broadcast

It's 2014-07-16 15:27.Long time no writing, suddenly inspired to write something (in fact, just got a tricky question, proud of. Oh, I'm a cow. Don't say much nonsense, get to the point.I do not know you have not encountered this problem, itself do

Common shortcut keys for Android Studio

(will continue to be updated) this side of the commonly used shortcut keys is to finish keymap to eclipse, not pure Android studio, here are mainly about some of the more commonly used shortcut keys:ctrl+g/ctrl+alt+shift+g: The query variable or

Android JNI Library Implementation Reboot,recovery

1. Recovery function:#defineUPDATE_TITLE "--update_package=" #define Update_command_file "/cache/recovery/command" #define Update_flag_ FILE "/cache/recovery/last_flag" #define Last_install_file "/cache/recovery/last_install" #define LAST_LOG_FILE "/

Use transparent buttons in basic4android

#Region Project Attributes #ApplicationLabel: b4atransparentbutton#versioncode:1#versionname: ' Supportedorientations possible values:unspecified, landscape or Portrait. #SupportedOrientations: unspecified# Caninstalltoexternalstorage:false#end

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