How to add picture naming rules to android

This article mainly introduces how to add picture naming rules in android related knowledge, the content is detailed and easy to understand, the operation is simple and fast, with a certain reference value, I believe you will have something to gain after reading this android article on how to add picture naming rules, let's take a look at it.

After naming, if the naming is wrong, prompt Invalid file name: must contain only [a-z0-9.] according to the system information.

It is known that naming can consist of lowercase letters and numbers and underscores and'.' Consists of and begins with a lowercase letter, that is, it cannot begin with an underscore or a number

2.default and continue are special reserved symbols of Java, which will be translated into Java code by the system. When the picture is named with this name, it will appear.

Invalid symbol: 'default', etc. Error

3. When you drag a picture directly from the outside (a picture that is not properly named), the system will not pop up a naming error as usual.

At this time, the android project will not report an error, but there will be unrecognized problems such as R.id.XXX, because the R file did not generate the corresponding id.

4. There is also one of the biggest headaches when there is a third. There will also be problems that can not be recognized by the id of other controls added later, so when the control id does not recognize it, you can check the picture names in the drawable file.

What is Android? Android is a free and open source operating system based on the Linux kernel, mainly used in mobile devices, such as smartphones and tablets, led and developed by Google and the Open Mobile Alliance.

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