Android

Today to tekkaman ninjaDownloaded the patch file of the Android system linux2.6.29 kernel relative to the standard kernel.. Directly perform analysis, which is convenient and does not need to be done by yourself. The patch contains a lot of content.

Qvga = 320*240; wqvga = 320*480; wqvga2 = 400*240; wqvga3 = 432*240; Hvga = 480*320; VGA = 640*480; WVGA = 800*480; wvga2 = 768*480; fwvga = 854*480; dvga = 960*640; Pal = 576*520; NTSC = 486*440; svga = 800*600; wsvga = 1024*576; XGA = 1024*768;

Let me name it like this, because it is an activity, but we see the effect of a dialog box, so I call it a disguised dialog, of course, it is also known as a floating activity. In Android, we often use the dialog class or its subclass (such as

Finally, the problem was solved. The reason for this error was that the permission was incorrect due to my carelessness. As a result, the effect was always delayed, I was puzzled. I was in a dead corner. Fortunately, I finally corrected this error.

Android requires all installed applicationsProgramA digital signature is required. Otherwise, the system will not install and run programs without proper signature licenses. You must sign your program on both the device and the simulator to debug

In the new year, I plan to spend some time charging myself and learning new knowledge. Android is one of them. My goal is certainly not an expert who is engaged in mobile development. The Stone of his mountains can attack the jade. Open your eyes

1. spinner (rotating button or drop-down list): sets the listener to setonitemselectedlistener.Set the animation effect to setontouchlistener.Adapter: arrayadapter2. datepicker (a calendar Layout View with year, month, and day selected): Public void

We know that the style of the dialog box provided by the Android system is a little simple. If your application is gorgeous and coupled with a simple dialog box, it seems out of place. So ...... we can use reflection technology to prevent the close

Document directory 1.1 underlying virtual buttons   Android virtual buttons Android standard keyboards include home, menu, back, and search, but they must also be industrial. Nexus One is not implemented with a touch screen using common

The irreconcilable contradiction between handheld devices today is the contradiction between the increasing energy consumption and the bottleneck of battery capacity. Even if this bottleneck is absent, the longer-lasting endurance is also widely

From http://www.bangchui.org/read.php? Tid = 8458     For more information about how to optimize the activity startup speed and view rendering speed, see the documentation in this SDK.

From http://www.bangchui.org/read.php? Tid = 7792   In Android, SQLite data pants can be used to store data, but Google does not directly provide us with tools to manage data in the database.If you cannot directly view the database using a tool,

Android display SW Architecture Analysis   The following describes the layers: *Blue part-User space applications Application Layer, includingAndroidThe application, framework, and system Runtime Library are related to the underlying system

When the Java end initiates a call, mediaplayer will go to mediaplayerservice, and then call the corresponding decoding tool to decode and create audiotrack. All audiotracks to be output are merged in audioflinger: audiomixer, then, it is

The following describes how to download files to the SD card in Android. Here I only paste the downloaded code. You can directly use this method wherever you call it. Of course, you should take specific measures to solve specific problems. This code

Reflection mechanism in Java:In the Java Runtime Environment, can I know the attributes and methods of any class?Can I call a method for any object? The answer is yes. This kind of dynamic class information and the function of dynamic calling

Recently, it was found that the patent wars between Microsoft and Android were amazing. Apple and Oracle were already involved, and all of them were involved. I am really worried about Android, but his development prospects are quite hidden. Think

Recently, I encountered such a problem. When I want to jump the content entered in an activity text box to another activity, the value in this text box remains unchanged. I passed through bundle, but it cannot be passed. I checked the information

Original article: http://www.anddev.org/hello_android_-_your_first_application-t31.html Write the first Android program "Hello android" What is this: this tutorial demonstrates how to create the simplest Android program.What can be learned: Create

1. activity: it is the most basic and commonly used component in Android. Simply put, an activity is a whole screen displayed on a mobile phone screen. If you switch from one interface to another, two activities are required. 2. intent: Meaning