如何改变editText的背景颜色？

Question

I need to change background color of EditText if it is empty. Below is my code but doesn't seem to be working.

public void onClick(View v) {
    // TODO Auto-generated method stub            
    Change();    
}

public void Change() {
    if(("").equals(name)) {
        name.setBackgroundColor(Color.RED);
        return;
    }
}

Answer 1

Assuming 'name' is the EditText in question, your if statement should read something like this:

if(("").equals(name.getText().toString()))

Performing an Object.equals(Object) between a String and an EditText (at least currently!) will not return true.

Answer 2

The easiest way is to check the length:

if (name.length() == 0) {
    name.setBackgroundColor(Color.RED);
}