android 4 3 emoji

android. app. Activity;Import android. OS. Bundle; public class MainHelloWorld extends Activity {/** Called when the activity is first created .*/@ OverridePublic void onCreate (Bundle savedInstanceState ){Super. onCreate (savedInstanceState );SetContentView (R. layout. main );}}As you can see, MainHelloWorld is a subclass of Activity, and the onCreate method must be rewritten for the subclass.The setConte

generator, extracting documents from source notes. Jdb:Debugger, debug Debugging tool. Java: Run the compiled java program. 2. Configure the variable environment for JDK on Windows :When the system is required to start an application, the system will first look in the current directory, if not the path specified in the system variable path to find. We said earlier that the jdk contains a bunch of development tools that are located in the JDK 's installation directory, and to facilitate the use

Android IPC Mechanism (4) use ContentProvider for inter-process communication ContentProvider provides a unified interface for data storage and retrieval. It can share data between different applications and is suitable for inter-process communication. The underlying implementation of ContentProvider is also a Binder, but it is much easier to use than AIDL. The system also made a lot of contentproviders, su

) {} @Overridepublic void Onstoptrackingtouch (SeekBar SeekBar ) {}3. Color Matrix TransformationPrinciple:Create a new layout:Write acitvity:public class Colormatrixactivity extends Activity {private ImageView mimageview;private GridLayout mgroup;private Bitmap mbitmap;private int medittextwidth, medittextheight;private edittext[] mEts = new EDITTEXT[20];p rivate float[] Mcolormatrix = new float[20]; @Overrideprotected void OnCreate (Bundle savedinst

Android study note 21. Use ContentProvider for data sharing (4). ContentProvider and androidprovider of the Operating System (contact)The Android system provides a large number of contentproviders, such as contact information and multimedia information of the system. Our developed applications mainly call the query () provided by the system's ContentProvider thro

Android multithreading analysis 4: Implementation of MessageQueue, Android multithreading analysis 4: Implementation of MessageQueueLuo chaohui (http://www.cnblogs.com/kesalin/) CC license, reprinted please indicate the source In the previous two articles, "Android multi-Thr

who are still unfamiliar with Android development to quickly enter the door for Android development. For programmers familiar with Android development, skip these two chapters. Chapter 3 and Chapter 4 describe the basis of Game Development and the API introduction of

Android from hardware to application: Step by Step 4-use the JNI method to tune the hardware driver In Android, java applications call the hardware abstraction layer module through the JNI method, from hardware to application in Android: Step by Step 3 -- access the hardware

[Android UI design and development] 4. Fragment introduction and simple implementation on the menu bar at the bottom (I), androidfragment TabActivity has been completely deprecated since Android4.0 and replaced by Fragment. Fragment is a new concept in Android3.0. Fragment is translated into Chinese, which means fragments, but it is very similar to Activity. The following content applies to versions 3.0 and

Android XMl parsing magic xstream 4: parse complex xml files into objects, androidxstream For more information about xstream, see: Android XMl parsing magic xstream 1: parse the aa. xml file in the asset folder of the android Project Android XMl parsing magic xstream 2: Conv

Basics of learning Android from 0 (3)-layout manager of view ComponentsAndroid layout managerAndroid ActivityThe component binds the display interface for the activity through setContentView (xml resId, however, in order to better manage the various controls in the user interface of the Android Application (a series of components such as button text box editing a

the current Android device.2) Threads Tab Display thread statistics,1-20. Figure 1-20Threads Tab 3) Heap Tab Display stack information, As shown in figure 1-21. Figure 1-21Heap Tab Experience Sharing: The Heap tab plays an important role in optimizing the application memory. The specifics will be carefully described in the following sections. 4