使用Java中的循环切换语句

Question

I have a switch statement to change image resourceId:

int imageId = 0;
    switch (i) {
        case 0:
            imageId = R.drawable.image0;
            break;
        case 1:
            imageId = R.drawable.image1;
            break;
        case 2:
            imageId = R.drawable.image2;
            break;
        case 3:
            imageId = R.drawable.image3;
            break;
        case 4:
            imageId = R.drawable.image4;
            break;
        case 5:
            imageId = R.drawable.image5;
            break;
        case 6:
            imageId = R.drawable.image6;
            break;
        case 7:
            imageId = R.drawable.image7;
            break;
    }

But I have been trying to find out how to do this using a loop, since the case number and the number at the end of each image matches. Tried with a for loop but without success.

Can anyone help?

Thx!!

Answer 1

Why not give R.drawable an array of images and then you can do the below ?

imageId = R.drawable.images[i];

Here's the Oracle tutorial . Alternatives include a java.util.List of some particular implementation eg an ArrayList

Answer 2

hey why you not do like this, its simple and easy for beginner, like we make click on onclicklistener,

@Override
public void onClick(View arg0) {
    switch (arg0.getId()) {
    case R.id.rlfeatured:
        // perform any action
        break;

    case R.id.rlbrowse:

     // perform any action
        break;
    case R.id.rlmyshows:

        break;
    case R.id.rlcategories:

        break;
    case R.id.rlfavourites:

        break;

    default:
        break;
    }

}

Thanks