将图像放在drawable文件夹中？

Question

I put an image in my res/drawable folder, but when I clean and build my project, I receive the error message R cannot be resolved . I don't understand why this happens, what should I do?

Answer 1

Check out the following link: http://source.android.com/source/using-eclipse.html

Note: Eclipse sometimes likes to add an "import android.R" statement at the top of your files that use resources, especially when you ask eclipse to sort or otherwise manage imports. This will cause your make to break. Look out for these erroneous import statements and delete them.

After removing the erroneous imports, delete your R.java file and try to clean and build the project again. If the problem still persists, post here.

Answer 2

possible causes:

1. duplicate file names (across all drawables folders) . for example , is there a file named "h1.png" and also "h1.jpg" ?

2. bad files names . only letters allowed are lowercase english ones , and digits.

3. hidden files , like those of the OS . on windows , it's probably "Thumb.db" . either delete them , or delete & disable them. linux and mac also have such files , but with different names and usually start with "." .

Answer 3

确保您的图像名称位于较小的 latter和res / drawable文件夹中。有关我们如何在项目中添加drawable和支持的图像格式，请参阅docs Drawable Resources

Answer 4

Might be you are using android.R.drawable.your_image

Remove android.R from imports. use R.drawable.your_image

Answer 5

For Android Studio :

1. Right click on res, new Image Asset
2. On Asset type choose Action Bar and Tab Icons
3. Choose the image path
4. Give your image a name in Resource name
5. Next->Finish

The image will be saved in the /res/drawable folder!