问题描述
我试图比较两个drawables但没有成功。我做了一些研究，甚至有类似的问题，但没有帮助。
I am trying to compare two drawables but without success. I did some research, there is even a similar question but did not help.
在我的应用程序中，我使用 getCompoundDrawablesWithIntrinsicBounds 将ImageView放在EditText的正确位置。
然后我需要检查哪个图像资源在那里。
In my app, I use getCompoundDrawablesWithIntrinsicBounds to get the ImageView in the right position of a EditText.Then I need to check which image resource is alocated there.
这个小样本应该有效，不应该吗？但它返回不相等。
This small sample should work, shouldn't it? It returns "not equal", though.
Drawable drawable1 = ContextCompat.getDrawable(getApplicationContext(),R.drawable.cor);
Drawable drawable2 = ContextCompat.getDrawable(getApplicationContext(),R.drawable.cor);
if(drawable1 == drawable2){
System.out.println("equal");
}else{
System.out.println("not equal");
}
推荐答案
use instead equals with the getConstantState() method...
更新尝试与字节或像素进行比较是唯一可行的方法。
Update Try to compare with bytes or pixel is the only way that generally works.
// Usage:
drawable1.bytesEqualTo(drawable2)
drawable1.pixelsEqualTo(drawable2)
bitmap1.bytesEqualTo(bitmap1)
bitmap1.pixelsEqualTo(bitmap2)
这篇关于比较两个drawable中的资源的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！