如何做时,复选框改变状态? [英] How to do something when a checkbox change state?
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问题描述
这是我的code:
<CheckBox
android:id="@+id/sprint_checkbox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/sprint_game" />
<CheckBox
android:id="@+id/marathon_checkbox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/marathon" />
<CheckBox
android:id="@+id/never_ending_checkbox"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/never_ending" />
我想要做的是检测时,其中一个被选中,然后将另外两个为禁用,这样用户可以在一次只有一个选择是什么。
我试图用.setOnCheckedChangeListener,但我不能做到这一点,有人可以帮助我做一些code?
非常感谢你们!
What i want to do is "detect" when one of these is checked and then set the other two to "disable", so the user can select only one at time. I tried to use the ".setOnCheckedChangeListener", but i can't do that, can someone help me with some code? Thanks a lot guys!
推荐答案
这是你通知有关检查的变更方式:
This is the way you are notified about checked changes:
CheckBox check = findViewById(R.id.sprint_checkbox);
check.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
//do stuff
}
});
您也可以让您的活动实现了OnCheckedChangeListener接口,然后:
You can also let your activity implements the OnCheckedChangeListener interface and then:
CheckBox check1 = findViewById(R.id.sprint_checkbox);
CheckBox check2 = findViewById(R.id.marathon_checkbox);
CheckBox check3 = findViewById(R.id.never_ending_checkbox);
check1.setOnCheckedChangeListener(this);
check2.setOnCheckedChangeListener(this);
check3.setOnCheckedChangeListener(this);
重写接口的方法:
Overriding the interface method:
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
switch(buttonView.getId()){
case R.id.sprint_checkbox:
//do stuff
break;
case R.id.marathon_checkbox:
//do stuff
break;
case R.id.never_ending_checkbox:
//do stuff
break;
}
}
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