Android Language Project Application And Guidelines

Flowchart of how Android finds the best-matching resource. • Eliminate resource files that contradict the device configuration. The drawable-fr-rCA/ directory is eliminated, because it contradicts the en-GB locale. Drawable/ drawable-en/ drawable-fr-rCA/ drawable-en-port/ drawable-en-notouch-12key/ drawable-port-ldpi/ drawable-port-notouch-12key/ Exception: Screen pixel density is the one qualifier that is not eliminated due to a contradiction. Even though the screen density of the device is hdpi, drawable-port-ldpi/ isn't eliminated because every screen density is considered to be a match at this point. More information is available in the document. • Pick the (next) highest-precedence qualifier in the list ().

(Start with MCC, then move down.) • Do any of the resource directories include this qualifier? • If No, return to step 2 and look at the next qualifier. (In the example, the answer is 'no' until the language qualifier is reached.) • If Yes, continue to step 4. • Eliminate resource directories that don't include this qualifier.

In the example, the system eliminates all the directories that don't include a language qualifier: drawable/ drawable-en/ drawable-en-port/ drawable-en-notouch-12key/ drawable-port-ldpi/ drawable-port-notouch-12key/ Exception: If the qualifier in question is screen pixel density, Android selects the option that most closely matches the device screen density. In general, Android prefers scaling down a larger original image to scaling up a smaller original image. • Go back and repeat steps 2, 3, and 4 until only one directory remains.

Android Code Style And Guidelines By following standard coding style and guidelines, we can build a better android application. If you follow a standard coding style in android, it will be easier for you and also for others to understand your code easily. Learn about the different options for sharing code and libraries between Android, iOS, and Windows. Language Support Xamarin projects can be written in C# and F#, and consume libraries written in VB.

In the example, screen orientation is the next qualifier for which there are any matches. So, resources that don't specify a screen orientation are eliminated: drawable-en/ drawable-en-port/ drawable-en-notouch-12key/ The remaining directory is drawable-en-port. Though this procedure is executed for each resource requested, the system further optimizes some aspects.

One such optimization is that once the device configuration is known, it might eliminate alternative resources that can never match. For example, if the configuration language is English ('en'), then any resource directory that has a language qualifier set to something other than English is never included in the pool of resources checked (though a resource directory without the language qualifier is still included). When selecting resources based on the screen size qualifiers, the system uses resources designed for a screen smaller than the current screen if there are no resources that better match (for example, a large-size screen uses normal-size screen resources if necessary). However, if the only available resources are larger than the current screen, the system doesn't use them and your app will crash if no other resources match the device configuration (for example, if all layout resources are tagged with the xlarge qualifier, but the device is a normal-size screen). Note: The precedence of the qualifier (in ) is more important than the number of qualifiers that exactly match the device. For example, in step 4 above, the last choice on the list includes three qualifiers that exactly match the device (orientation, touchscreen type, and input method), while drawable-en has only one parameter that matches (language). However, language has a higher precedence than these other qualifiers, so drawable-port-notouch-12key is out.

Member 11422662 21-Feb-15 9:09 21-Feb-15 9:09 Hi I just join in android training.Some problem is created in eclipse.i set android sdk path in eclipse.start sdk manager.then update API level 20.then i create workspace and start first android apps but appcompat_v7 is red sign.i import appcompat_v7 from sdk folder.But not working.So any apps started but all is red sign.i try to solve this problem in internet but not solve. Description Resource Path Location Type error: Error retrieving parent for item: No resource found that matches the given name 'android:Widget.Material.ActionButton'. Styles_base.xml /appcompat_v7/res/values-v21 line 75 Android AAPT Problem problem 2. R.java file not created. Red sign in style.xml file. Please help me.I not learning.So i late.I beg you for help.please friends. Member 10417318 21-Nov-13 7:34 21-Nov-13 7:34 Hello Everyone, I wanted to mention that many current Android tutorials focus on the Eclipse IDE which used to be Google's target development environment.