Android

Not to mention nonsense, go to the theme directly. The easiest way to take a photo in android is to set the Action to android in a New Intent. media. action. IMAGE_CAPTURE then uses startActivityForResult (intent, REQUEST_CODE) to enter the camera.

You only need to specify the type when creating the table: INTEGER PRIMARY KEY AUTOINCREMENT Then, when saving the data, do not set its value (or set it to null. For example, create a table: [SQL]Create table TABLE_NAME (_ id integer primary key

Public class SocketClient{Public boolean mClientFlag = false;Private static Socket client;Public SocketClient (){Log. d ("WineStock", "WineStock SocketClient ()");Client = new Socket ();}Public SocketClient (String HostName, int iPort){Client = new

There are two common page Jump methods:1. IntentIntent is suitable for jump between Activity and Activity. you can press the return key to directly return to the previous page.Disadvantage: You need to register Activity with Manifest2.

[Java] Intent intent = new Intent (MainActivity. this, Start. class );StartActivity (intent );Intent intent = new Intent (MainActivity. this, Start. class );StartActivity (intent, AndroidManifest. xml declares Start, Let's look at the class name.

Network Access is too important in our daily life. What will our life look like if there is no network? Android phones and browsers are the same. You can also obtain data through network communication, such as webservice and EJB calls. The following

Public static Bitmap drawBackground (int cellSize, int height, int widht ){Bitmap bitmap = Bitmap. createBitmap (widht, height, Config. ARGB_8888 );Canvas cv = new Canvas (bitmap );Paint background = new Paint ();Background. setColor

Since learning android's hello world We can see this function findViewById (), which has become a household name. It is a must-have function (well, this is a nonsense) But I have never used it in detail, until I found an inexplicable bug caused by

[Java] // some Defined variablesPrivate String newName = "image.jpg ";Private String uploadFile = "/sdcard/apple.jpg ";// Private String actionUrl = "http: // localhost: 8080/testCutPic/upload. php ";// Upload the image address. The parameter of the

This example shows how to set the display direction of an Activity through the setRequestedOrientation () method of the Activity. This example is compiled and tested on Eclipse. 1. Define the inventory file (AndroidManifest. xml) Package = "my.

[Java] final String INITIALIZED = "initialized ";SharedPreferences myPrefs = getPreferences (MODE_PRIVATE ); Boolean hasPreferences = myPrefs. getBoolean (INITIALIZED, false );If (hasPreferences ){Log. v ("Preferences", "We 've been called brefore ")

I recently learned the Api documentation and opened Android. graphics. the Bitmap class has an internal class Bitmap. config class. In the Bitmap class, createBitmap (int width, int height, Bitmap. config config ). Enumerated variablePublic static

When the same variable is often used in multiple activities, use Bundle to set each call to the Activity. In android, you can use Application context to conveniently use the same variables repeatedly for different activities in the entire

Zygote   Zygote is started from /Frameworks/base/cmds/app_process/app_main.cpp The main () function in.   Start JavaVM: The main () function starts the VM: If (zygote ){ Runtime. start ("com. android. internal. OS. ZygoteInit ", StartSystemServer?

Android images can be converted into circles and rounded rectangles, which is more efficient.Rounded rectangle:Int w = getWidth ();Int h = getHeight ();Bitmap bitmap = Bitmap. createBitmap (w, h, Bitmap. Config. ARGB_8888 );Canvas canvas = new

1. Create an android Project 2. Create a primary activity class [Java] package test. yutel; Import android. app. Activity;Import android. OS. Bundle; Public class RemoteActivity extends Activity {@ OverridePublic void onCreate (Bundle

The dependency between classes in an application may be very complex. To create a class instance, you must first create an example of the class on which the class depends, and then create an instance of the dependent class, these classes may depend

In a certain aspect, we can regard android as an XWINDOW on LINUX. Therefore, the process of starting the system will inevitably start with linux kernel. Of course, the startup of linux kernel is not a problem we need to discuss here.I recently

Roboguice also provides Injection Support for accessing various resources such as drawable, arrary, and string in the res directory. You can use @ InjectResource to easily apply the required resources. In this example, the Android ApiDemos sample

Android: taskAffinity This attribute is used for tasks that are closely related to the Activity. Activities with the same kinship belong to the same task in terms of concept (from the user's perspective, they belong to the same application ). The