How to Retrieve Resource ID from a String in Android?

How can I retrieve a resource ID in Android using its name as a string?

int resourceId = getResources().getIdentifier("icon", "drawable", getPackageName());

In Android, accessing resource IDs dynamically using their names can be achieved by utilizing the `Resources.getIdentifier()` method. This allows you to convert a string name into its corresponding resource ID efficiently.

// Example of retrieving a drawable resource ID from a string
int resourceId = getResources().getIdentifier("icon", "drawable", getPackageName()); // retrieves R.drawable.icon

Causes

• Misunderstanding how to access resources dynamically
• Overlooking the use of getIdentifier() method

Solutions

• Use the Resources.getIdentifier() method to obtain the resource ID from the string name.
• Make sure to pass the correct parameters: resource name, resource type, and package name.

Mistake: Forgetting to include the correct resource type when using getIdentifier()

Solution: Ensure that the second parameter in getIdentifier() matches the type of resource you are trying to access (e.g., "drawable").

Mistake: Using an incorrect package name which results in a zero ID

Solution: Use getPackageName() to ensure that the package name matches the application package.