[英]Can't enable clicked disabled button in android
I'm struggeling to enable a disabled button
when it's clicked. 我正在努力启用被单击的禁用button
。 I know it sounds weird, but let me explain: when index
equals -1 the button
should be disabled. 我知道这听起来很奇怪,但是请允许我解释一下:当index
等于-1时,应该禁用该button
。 If index
is greater than -1 the button
should be enabled. 如果index
大于-1,则应启用该button
。 The problem is when I click on the disabled button
and index
is greater than -1, the button
is still disabled. 问题是当我单击禁用的button
并且index
大于-1时,该button
仍处于禁用状态。 I tried btn.setOnclicklister(null)
, but it didn't work. 我尝试了btn.setOnclicklister(null)
,但是没有用。
the code: 编码:
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (index == -1){
btn.setOnClickListener(null);
btn.setEnabled(false);
btn.setClickable(false);
}else if (index > -1){
btn.setOnClickListener(this);
btn.setEnabled(true);
btn.setClickable(true);
}
}
});
You should enable OnClickListener
every time you set index
to not -1: 每次将index
设置为不为-1时,都应启用OnClickListener
:
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
// do something helpful you want on click
// and disable the button
if (index == -1){
btn.setOnClickListener(null);
btn.setEnabled(false);
btn.setClickable(false);
}
}
}
And somewhere: 在某处:
...
index = 1;
btn.setOnClickListener(listener);
btn.setEnabled(true);
btn.setClickable(true);
...
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