Android

Author: Sun Dongfeng   1. Obtain the Android source code Git is an open source distributed version control software developed by Linux Torvalds to help manage Linux kernel development. It is different from a centralized version control system such

OpenGL version and device compatibilityOpenGLES 1.0 and 1.1API specifications have been supported since Android1.0. since Android2.2 (API Level 8), the Framework supports OpenGLES 2.0 API specifications. openGLES 2.0 is supported by most Android

First define an Application Package com. xesam; Import android. app. Application;Import android. content. res. Configuration;Import android. util. Log; Public class ApplicationActivity extends Application {Static String name = "xiaoxi shanzi ";@

SYNTAX (SYNTAX ): Included IN (contained in ): DESCRIPTION ): This attribute is used to grant the application the required permissions for correct operations. These permissions are granted during application installation, rather than during

Android. widget. Toast is a class provided by android for quick display of information. This is a very convenient and useful thing, especially when we initially set up the control or behavior of Android applications, it can be used to assist us in

Example of SurfaceView oscilloscope: directly add the code The program automatically draws the sine wave and Cosine waveform on the Screen Based on the button clicked. Each time the program draws, it only needs to draw (update) the waveform of the

An snd_kcontrol was analyzed yesterday. It can be considered that the upper-layer application uses the name to identify the name to traverse the underlying snd_kcontrol linked list and find the matched kcontrol. See snd_ctl_find_id Function [Csharp]/

The effect is as follows:The subject code is as follows:  Package com. free. chart; Import android. content. Context;Import android. graphics. Canvas;Import android. graphics. Color;Import android. graphics. Paint;Import android. view. SurfaceHolder;

The startActivity () method can call another Activity, but this method does not return a result for the current Activity. For example, if you have an Activity that prompts the user to enter the user name and password, and the information entered by

Activity contains views and ViewGroups ). A View is a Widget that is displayed on the screen ). View Example: Button, TextView, and EditText ). Each View inherits from the android. view. View class. A ViewGroup can contain one or more views.

Main. xml: Android: orientation = "vertical"Android: layout_width = "fill_parent"Android: layout_height = "fill_parent">Android: layout_width = "fill_parent"Android: layout_height = "wrap_content"Android: text = "@ string/hello"/>Android:

In fact, Appwidget is a small view that can be embedded into other applications and updated regularly. These views are called Widgets components. You can use AppwidgetProvider to publish Widgets, which can accommodate other appwidgets called

The Java Native Interface (JNI) standard is part of the java platform. It allows Java code to interact with code written in other languages. JNI is a local programming interface that enables the Java code running inside the Java Virtual Machine (VM)

The preceding LocalService mainly provides components in the same Application. If you want to support different applications or processes, use the Service. You can use Messenger. Messgener can be used to support inter-process communication without

You can use the getDirection () method of RasterMap to query the path. Similar to the query address, the path query result notifies the application through the callback function, the following example returns the path from Nanjing to Beijing. The

1. download the libpng library on the libpng official website and decompress it.2. view the contents of makefile. Create a folder to view the files that must be included in the makefile file compiled into the library and copy them to the file. Here,

1. Get the file from the raw folder in the resource and read the data (the resource file can only be read but cannot be written)String res = ""; Try { InputStream in = getResources (). openRawResource (R. raw. bbi ); // In \ Test \ res \ raw \

Install the Android Virtual Machine in windows. Sometimes, after the SDK is updated, point to android_sdk_windows_x86 in Eclipse preference. A prompt such as This AndroidSDK requires Android Developer Toolkit version 10.0.0or above is displayed, and

[Java]/*** Parse Bitmap images from files** @ Param path* @ Param maxWidth* @ Param maxHeight* @ Return*/Public static Bitmap decodeFile (String path, int maxWidth, int maxHeight ){BitmapFactory. Options options = new BitmapFactory. Options

1. UriThe Universal Resource Identifier ("URI ").Uri indicates the data to be operated. Each type of resource available on Android-images and video clips can be represented by Uri. A URI consists of three parts:The naming mechanism for accessing