Invisible / transparent button that works like a regular in android?

问题

How do I get one area in the middle of a image clickable (not the whole image)? Tried with a button set to invisible and clickable but the button does not work. What are the alternatives to an invisible / transparent button that works like a regular?

I've also thought of a completely transparent and clickable PNG that should work but maybe not the best way?

回答1:

Here you go:

Button theButton = (Button)findViewById(R.id.theButton);
theButton.setVisibility(View.VISIBLE);
theButton.setBackgroundColor(Color.TRANSPARENT);

phoneButton.setOnClickListener(new OnClickListener()
{   
    @Override
    public void onClick(View v)
    {
        // DO STUFF
    }
});

回答2:

android:background="@android:color/transparent"

回答3:

You can try set transparent background to the button. But do not change buttons visibility, cause that prevents view from getting click events.

回答4:

You can also use

android:background = "@null"

回答5:

There's:

android:background="?android:attr/selectableItemBackground"

来源：https://stackoverflow.com/questions/3775726/invisible-transparent-button-that-works-like-a-regular-in-android