I have 52 images of a deck of cards in my Drawable folder, with .png format.
I want to modify my android:src attribute of an ImageView, but using a var which saves the name of my image name. For example.
String nameOfCard="two_of_diamonds"; // and as I said I have an Image called two_of_diamonds in my Drawable folder
I tried several ways but I didn´t find the correct one. If I use: imageview.setImageResource(int) I need an int not a String reference.
Any idea? Thanks!
Use the following code to access drawable resources using name:
Resources resources = getResources();
final int resourceId = resources.getIdentifier("two_of_diamonds",
"drawable", getPackageName());
imgView.setImageResource(resourceId);
Use getIdentifier()
public int getIdentifier (String name, String defType, String defPackage)
This will return the id. Use the id to set image resource for imageview.
For example,
int id = getResources().getIdentifier(nameOfCard,"drawable",getPackageName());
imageview.setImageResource(id);
Create an Object of Image like
class Image{
String Name;
int Id;
public Image(String Name,int id){
this.Name=Name;
Id=id;
}
}
Create an Array of Images
Image[] images = {new Image("name",R.drawable.name_of_image),...);
When Setting image use
for(Image i: images){
if(i.Name.equals("desired")){
imageview.setImageDrawable(i.Id);
}
}
There must be a better approach to the problem than this. It is a very basic one.
I needed this in Kotlin and used Deven's answer. It became:
// THIS IS KOTLIN, NOT JAVA
var diceRoll = dice.roll()
var diceRoll2 = dice.roll()
// Update the screen with the dice roll
diceImage.setImageResource(getMyResource("dice_" + diceRoll))
diceImage2.setImageResource(getMyResource("dice_" + diceRoll2))
fun getMyResource(imageName: String):Int{
val resources: Resources = resources
val resourceId: Int = resources.getIdentifier(
imageName,
"drawable", this.packageName
)
return resourceId
}
