How do I compare a background Image resource TextV

2019-01-25 21:19发布

Sorry for my bad English.

I have one TextView and it have a Background image resource. But i need when i click in this TextView the Android compare the current Background image resource with a one of R.drawable.bg_images in drawable folder.

bg_image_1 bg_image_2

if the TextView setBackgroundImageResource is bg_image_1 and i click on it, switch TextView background image to gb_image_2 resource.

how?

thanks

1条回答
啃猪蹄的小仙女
2楼-- · 2019-01-25 21:42

You can't get a drawable's resource id after setting this drawable as a background. But you can store some kind of flag or even a resource id somewhere outside your TextView or maybe in its tag field. In this case you'll be able to get it and compare with another id.

Object tag = textView.getTag();
int backgroundId = R.drawable.bg_image_2;
if( tag != null && ((Integer)tag).intValue() == backgroundId) {
    backgroundId = R.drawable.bg_image_1;
}
textView.setTag(backgroundId);
textView.setBackgroundResource(backgroundId);
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