如果ImageView具有背景可绘制，如何比较它

Question

if（imageview == R.drawable.example）{

}

Answer 1

希望此功能对您有帮助：

public static boolean checkImageResource(Context ctx, ImageView imageView,
    int imageResource) {
boolean result = false;

if (ctx != null && imageView != null && imageView.getDrawable() != null) {
    ConstantState constantState;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        constantState = ctx.getResources()
                .getDrawable(imageResource, ctx.getTheme())
                .getConstantState();
    } else {
        constantState = ctx.getResources().getDrawable(imageResource)
                .getConstantState();
    }

    if (imageView.getDrawable().getConstantState() == constantState) {
        result = true;
    }
}

return result;
}