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sound of the speaker to play video synchronously. 4. Not only can store and display photos and videos locally on your phone, but also support networking to enable users to upload and download multimedia files.In 1997, Silicon Valley engineer Philippe Kahn made the world's first mobile phone with camera function. And the camera phone was born at the same time, is

(new MyButton ());Button2.setOnClickListener (new MyButton ());Button3.setOnClickListener (new MyButton ());Button4.setOnClickListener (new MyButton ());Button5.setOnClickListener (new MyButton ());}Class MyButton implements OnClickListener {@ OverridePublic void onClick (View arg0 ){// TODO Auto-generated method stubSwitch (arg0.getId ()){Case R. id. button_alpha:Alpha ();Break;Case R. id. button_rotate:Rotata ();Break;Case R. id. button_scale:Scale ();Break;Case R. id. button_translate:Transl

An Android app can contain zero or multiple Acivity values. When your application contains multiple activities, you usually need to jump between them. In Android, Intent components are required to complete these operations.The best way to understand this important and abstract concept is to try it. The following example shows how to jump between two activities.1. Create a project named UsingIntent.

Android: AsyncTask application for asynchronous processing (2), androidasynctask Preface In the previous article Android: Handler + Thread application of asynchronous processing (1), we know that the main UI thread of Android is mainly responsible for handling users' button events, users' touch screen events, and Scree

Enable android development tool (Eclipse) 1. Right-click New --> Android Appliction Project Click Next and follow the default configuration method... 2. The project structure is as follows: 3. Do not tangle the project structure. Run the project once: 4. Right-click the project Run As... -->

Resources in Android refer to non-code parts, such as clips, audios, videos, and characters. Generally, we store native files in assets. For example, MP3 files cannot be directly accessed by Android programs. They must be read as binary streams through the AssetManager class. Layout files are generally stored in the res folder, such as anim, drawable, layout, val

a column, Android: background this property sets the background color. Android: layout_width: when setting this attribute, I didn't use the three property values, but defined by myself. At this time, we need to understand the measurement units of android: 1). dp-density-independent pixels. 1 dp is equivalent to 1 pixel on the screen of 160dpi. We recommend that

-called "fish and bear's paw" cannot have both features. The actual situation is the King .) Select android2.2 and click Next Enter the program name at the first place of the program annotation, that is, the name displayed at the top of the program during running. Everyone who has learned Java knows what a "package" is. For those who haven't touched the "package" yet, I will give a personal explanation: Package: to prevent conflicts between classes with the same name and assign them to diffe

The process priorities in Android are as follows:1. Foreground process: the activity that interacts with the user in the foreground, or the service bound with the foreground activity, these two processes are called foreground processes.2. Visible process: visible but not in the foreground, the user is not clickable, it belongs to the visible process.3. Service process: The process of service services is ope

creating data tables. The data tables are created using SQL statements. The Code is as follows: 1 db.execSQL("create table tab(_id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL)"); After the table is created, use the insert (String table, String nullColumnHack, ContentValues values) method to insert data. The parameter meanings are as follows: Table: name of the target table. NullColumnHack: Specifies the name of a column in the table. In SQLite, it is not allowed to insert records whos

Http://mobile.51cto.com/ahot-419184.htmContent IntroductionWe'll add a layout scheme to the application project, in which the XML and Eclipse ADT interfaces will be the right helpers for the job-but some Java development knowledge will be used in the next two sections. XML and Java in the development of the Android platform is everywhere, if you do not have a basic understanding of the two, please find ways to fill up the lessons as soon as possible.

= "40dip" Android: textcolor = "# FFFF00" Android: layout_torightof = "@ ID/TV1" Android: text = "Layer 2"/> Android: Id = "@ + ID/TV3" Android: layout_width = "wrap_content" Android:

, Contacts.ContactMethods.CONTENT_POSTAL_ITEM_TYPE}; Cursor addrCur = cr.query(Contacts.ContactMethods.CONTENT_URI, null, addrWhere, addrWhereParams, null); while(addrCur.moveToNext()) { String addr = addrCur.getString( addrCur.getColumnIndex(Contacts.ContactMethodsColumns.DATA)); String type = addrCur.getString( addrCur.getColumnIndex(Contacts.ContactMeth

application interesting (1) making programs easier to learn When our users fully understand the situation, they will feel good. We should make our apps easier to learn, and we should make our visual mode or muscle memory easier than other Android apps. For example, the return button is a good shortcut to navigation. (2) The user is always right Please be polite and prompt people to make corrections. When

360 and Kingsoft mobile guard both have a feature that makes android Developers suffer: Check advertisement notifications!When there is an advertisement in the notification bar, run 360 to perform a check, which will tell you which application the advertisement is (of course, this is not limited to advertising, they get all notifications, then filter), and then he will let the user choose: Do not process; disable the notification (in fact, kill the pr

:　　Print abstract classPackage com. terry. Pattern_two; Public abstract class Print { Public abstract String PrintWeak ();Public abstract String PrintStrong ();}PrintBanner classPackage com. terry. Pattern_two; Import com. terry. Pattern_one.Banner; Public class PrintBanner extends Print { Private Banner banner;Public PrintBanner (String string ){Banner = new Banner (string );}@ OverridePublic String PrintStrong (){// TODO Auto-generated method stubReturn banner. showWithAster ();} @ OverridePub

An Android app can contain zero or multiple acivity values. When your application contains multiple activities, you usually need to jump between them. In Android, intent components are required to complete these operations. The best way to understand this important and abstract concept is to try it. The following example shows how to jump between two activities. 1. Create a project, usingintent.

Cocos2dx 2.x Android gravity detection rotating screen, cocos2dx android In the case of charging, when playing with a mobile phone, the screen usually needs a specific rotation direction. The function is divided into two parts: one is to obtain the desired Angle Based on the mobile phone's gravity direction X, Y, and Z; the other is to set the screen rotation dir

are about 7 inches in size, and for this type of pad, you can consider directly allowing users to use the mobile version of the app (if an app is used on a 6-inch phone, there is no interface problem, which can usually be used on a 7-inch pad).Apps for mobile versions: games, video playback, graphic image processing, reading, education, or corporate office are recommended to support horizontal and vertical screens, and apps such as e-commerce or financial management can only support vertical sc

://developer.android.com/reference/javax/microedition/khronos/opengles/GL11Ext.html) GL11ExtensionPack (http://developer.android.com/reference/javax/microedition/khronos/opengles/GL11ExtensionPack.html) 2. OpenGL ES 2.0 API class Android. opengl. ELES20 ------ this package provides the OpenGL ES 2.0 interface, which is effective from Android2.2 (API Level 8. To create an OpenGL-related application immediate