How to Access Android Resources by Name Using `getIdentifier()`?

Accessing Resources by Name

When working with resources in an Android application, it's often necessary to access them by their names rather than their integer IDs. This can be useful, for instance, when you need to dynamically load resources based on the user's locale or other factors.

Method to Use

To access a resource by its name, use the getIdentifier() method of the Resources class. This method takes three parameters:

• name: The name of the resource.
• defType: The type of the resource. This can be "drawable", "string", "id", or another valid resource type.
• defPackage: The package that the resource belongs to.

Example

The following code snippet demonstrates how to access a drawable resource by its name:

int drawableResourceId = this.getResources().getIdentifier("my_drawable", "drawable", this.getPackageName());

In this example, "this" is an Activity. You can substitute "drawable" with the desired resource type, such as "string" or "id".

Performance Considerations

It's important to note that using getIdentifier() to access resources is slower than using the integer IDs. Therefore, it's recommended to use this method only when necessary.

Official Documentation

For more information, refer to the official Android documentation on Resources.getIdentifier(): [https://developer.android.com/reference/android/content/res/Resources#getIdentifier(java.lang.String, java.lang.String, java.lang.String)](https://developer.android.com/reference/android/content/res/Resources#getIdentifier(java.lang.String, java.lang.String, java.lang.String))

The above is the detailed content of How to Access Android Resources by Name Using `getIdentifier()`?. For more information, please follow other related articles on the PHP Chinese website!