Recently, libgdx was used in the project, so I took the time to read opengles, and there was not much information about Android. However, the code pages of opengles platforms are similar, and IOS information is rich, one triangle rotation is found
We want to achieve this effect, such:
Click set date and time:
Click settings to bring up the following content:
The last point is to display the date and time in the preceding text box.
Implementation Code:
Package org. crazyit.
// Jump to the contact pagePrivate void pickContact (){// Create an intent to "pick" a contact, as defined by the content provider URIIntent intent = new Intent (Intent. ACTION_PICK, Contacts. CONTENT_URI );StartActivityForResult (intent,
The exhaustive screen map from the previous lesson isn't tied to a participant device form factor, although it can generally look and work okay on a handset or similar-size device. but Android applications need to adapt to a number of different
There are too many mobile phone devices and the resolution is different. Most methods to adapt to the font on the Internet are to define the values320 × 480 or value-hdpi method for processing.The first type is miserable. The resolutions of many
In Android, the Shader class is provided for rendering images and some geometric figures.
The Shader class includes five direct subclasses: BitmapShader, ComposeShader, LinearGradient, RadialGradient, and SweepGradient. Here, BitmapShader is used
Now we have a problem first. We use myThreadHandler. sendEmptyMessage (0); To send a message object, how does Handler receive and process the message object? First, I will draw a data structure diagram:
From this figure, we can clearly see that
In android programming, the dialog box is very useful. However, sometimes the requirements for the dialog box are different. Now, we will summarize the types of the dialog box and the handling situation of the event.
1. Simple dialog
1. What needs to be done to make G-sensor work normally:
The G-sensor driver file includes:
Driver/i2c/chips/lis331dl. cDriver/i2c/chips/sensorioctl. hInclude/linux/lis331dl. h
And in the/kernel/arch/arm/mach-s3c6410/mach-ur6410.c file i2c chanel1
First, I implement this function in a way that is easy to understand.
On the server side, create an index. php file to read MySQL database information:
Index. php:
$ Link = mysql_connect ("localhost", "root", "123456 ");Mysql_query ("set names utf8 "
The task of this article is to add a configuration item Page (Reference) on the simple ToDoList program ). This Reference page is also very simple:
This ToDoList now has two pages, the home page can fill in To-Do items, then the manu key
There are many hidden services in Android, and StatusBarManager is one of them, which can be seen in Context. java:
[Java]/*** Use with {@ link # getSystemService} to retrieve a {@ link* Android. app. StatusBarManager} for interacting with the
What is Intent? Let's take a look at the definition on the Android Official Website:
An intent is an abstractdescription of an operation to be performed med. it can be used with startActivity tolaunch an Activity, broadcastIntent tosend it to any
For the source code running, see the end of the article.
This article mainly introduces five data storage methods in Android.
Data storage is most frequently used during development. Here we mainly introduce five Data Storage Methods on the Android
For oprofile porting, cross-compilation is performed on the Ubuntu Server 10.04 platform and transplanted to Android. After practice, the following steps are correct for cross-compilation, which cannot be properly run in other environments, the
There is one way to set the app to never be killed, AndroidManifest. add: android: persistent = "true" to the xml file. After the app is set in/system/app, the app is upgraded to the system core level without being killed, the stop operation is also
Configure the Ant Environment
Download Ant: http://ant.apache.org/bindownload.cgi
On windows, you should select a zip package to decompress the zip package to a directory.
Open the system environment variable, and click New in the system variables
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