different android os

Android uses shape to define colors, background colors, border colors for different controlsThe right and bottom border color of the set button is red and the border size is 3DP:Create a new Buttonstyle.xml file in drawable with the following contents: android:left= "10DP" android:right= "10DP" android:top= "10DP"/ > The button inside the layout file

There are many android devices in different shapes and sizes in the world. If you support a wide range of device types, you will have the opportunity to access a wide range of user groups. To achieve greater success on android, your program needs to adapt to different device configurations. You need to support

Cause Today in the project encountered a very "wonderful" problem. This is roughly the case: Android Terminals and servers (Spring), exactly the same string key values in the HashMap into the order is not the same, which directly led to the server and the Android terminal using the HMACSHA256 algorithm to encrypt the digest is not the same, The server will not be able to perform proper data validation. Th

Supporting Different Screens Android uses two common properties to classify device screens: Size and pixel density. As a developer, you should expect that your android application will be installed on devices of different screen sizes and pixel density. Therefore, your application should contain optional resources to o

It is a good habit to extract strings from the code into an external file. Android provides a dedicated resource folder for each project. If you use the SDK tool to create a project, this tool creates a res/folder in the root directory of the project. The subfolders in this folder indicate different resource types. Some default files, such as res/values/strings. xml, define the value of your string. Create

This article reproduced others, the original address: http://www.xyczero.com/blog/article/16/CauseToday in the project encountered a very "wonderful" problem. This is basically the case: Android terminal and Server (Spring), the exact same string key value to put in the HashMap in order, which directly led to the server and Android terminal with the HmacSHA256 algorithm encryption of the digest is not the s

In Android development, the methods, classes, or interfaces that allow you to see each other are quite different. Source: liukun (@ TheFresher) PS: In this article, I am familiar with Android development. What methods, classes, or interfaces do you think you may find different? The answer to this question is summarized

Backwards compatibility is poor in Android, but an app app can be processed or run between versions. Backward compatibility is not good, different versions of the system its API version is different, naturally some interfaces are different, the new platform can not use the old API, the old platform can not use the new

Directory (?) [-] Set different typography styles for horizontal and vertical rows Rewrite code For fragment, it often involves different screen sizes and different typography styles. We make a change in the basic small example, in the horizontal, is still realistic about two fragment, in the vertical row, as shown:Only one fragment is displayed

Different implementation of String. substring in Android and Java, androidsubstring I am lucky to go to sogou Ba today. I have a very interesting question. String str1 = "test for sougou";String str2 = str1.substring(5); The test site is whether str2 generates a new character array to save "for sougou" At that time, I thought that the String contains a char [], which cannot be reused by adding a number t

The resource XML file is adapted to a different versionThis address: Http://blog.csdn.net/caroline_wendyAdapt layout to Android platform or APIlevel: Adapt the layouts file to different API levels to avoid warnings;by creating different folders (LAYOUT-V4)for different API

Required3. Verify SDK. PropertiesNot Required4. Verify that the key files in the platforms/[SDK-Version]/directory existAndroid. JarFramework. aidlTools/aaptTools/aidlTools/dxTools/lib/dx. Jar The reason why sdkmanager cannot detect install packages is finally found. The SDK directory structure compiled by the Android Gingerbread source code is inconsistent with the sdkmanager detection logic. Android adju

we all know that a canvas is required for plotting, and then graphics is used to draw the desired pattern. Yes, it is similar in Android. You can get its canvas from a bitmap and draw it. You can also customize a view and use its canvas. When there is no graphics in Android, but instead of using the paint, the usage is also slightly different. Code : JAVA code

, that is, before android3.0, Android:bottomleftradius and Android: Bottomrightradius is the opposite, that is, I was just set to the left, but a diagonal display, because I did not learn, but in the internet for a long time did not find a solution, after knowing the Android loading layout file method, we know this solution , in this record, is in our res set up a directory called DRAWABLE-V12, this file di

The debugging information is as follows: [10:08:37-apidemos] re-installation failed due to different application signatures. [10:08:37-apidemos] You must perform a full uninstall of the application. Warning: This will remove the Application Data! [10:08:37-apidemos] Please execute 'adb uninstall com. example. Android. APIs 'in a shell. [10:08:37-apidemos] Launch canceled! Check the following informat

saving, Also not with Google's C2DM notification conflict 6, Android allows the program to run directly in the background or through the service to run the Notification Service support situation: Google: C2DM or self-built push service (C2DM service is greater than or equal to Android 2.2 version, and need Googleid)Apple:APNS or enforce self-built push (requires AppleID)Microsoft : MPNS or service agent (r

How does the font size of Android adapt to different resolutions? Someone asked me today how to adapt the font size of mobile phones with different resolutions and sizes in the android system? In fact, the adaptation of fonts and images is a truth. I, The principle is as follows: Assume that the resolution is 320x240,4

1. Different LayoutThe screen sizes of Android mobile phones vary by 480X320,640x360,800 X. How can an app automatically adapt to different screens? In fact, it is very simple, just need to create different layout folder under the res directory, such as: layout-640x360, layout-800x480, all the layout files will be writ

2014-07-16Environment: COCOS2DX 2.2.4AppDelegate.cpp in FPS set to 60Pdirector->setanimationinterval (1.0/60);Problem: Run on two Android devices. Two FPS is not the samei9100:4.0 system, fps approx. 60, (change FPS to 30, also changes)s5700:2.3 system, fps approx. 80, (change FPS to 30, still 80)This results in the game brush frame, the two machines run at a different speed.Workaround such as the following