Java 选中一定数量的复选框后禁用复选框
我有6个复选框,例如,如果我有一个变量a=2,则允许用户选中2个复选框并禁用另一个。如果我有a=3,则允许用户选中3个复选框并禁用其余复选框,依此类推。这就是我尝试的:Java 选中一定数量的复选框后禁用复选框,java,android,android-activity,Java,Android,Android Activity,我有6个复选框,例如,如果我有一个变量a=2,则允许用户选中2个复选框并禁用另一个。如果我有a=3,则允许用户选中3个复选框并禁用其余复选框,依此类推。这就是我尝试的: public void itemClicked(View v) { //code to check if this checkbox is checked! CheckBox checkBox = (CheckBox)v; check1=(CheckBox)fin
public void itemClicked(View v) {
//code to check if this checkbox is checked!
CheckBox checkBox = (CheckBox)v;
check1=(CheckBox)findViewById(R.id.check1);
check2=(CheckBox)findViewById(R.id.check2);
check3=(CheckBox)findViewById(R.id.check3);
check4=(CheckBox)findViewById(R.id.check4);
check5=(CheckBox)findViewById(R.id.check5);
check6=(CheckBox)findViewById(R.id.check6);
if(a==1)
{
only one can be checked the others get disabled
}
}
}
xml文件的一部分是:
<CheckBox android:id="@+id/check1"
android:layout_width="140dp"
android:layout_height="250dp"
android:scaleX="1.0"
android:scaleY="1.0"
android:button="@layout/cb_selector"
android:layout_marginLeft="80dp"
android:layout_marginTop="505dp"
android:onClick="itemClicked"
/>
<CheckBox android:id="@+id/check2"
android:layout_width="140dp"
android:layout_height="250dp"
android:scaleX="1.0"
android:scaleY="1.0"
android:button="@layout/cb_selector"
android:layout_marginLeft="365dp"
android:layout_marginTop="505dp"
/>
如何实现这一点?如果用户只能选择一个选项,最好使用单选按钮
无论如何,这里有一个简单的答案:。如果用户只能选择一个选项,最好使用单选按钮
无论如何,这里有一个简单的答案:。如果用户只能选择一个选项,最好使用单选按钮
无论如何,这里有一个简单的答案:。如果用户只能选择一个选项,最好使用单选按钮
无论如何,这里有一个简单而好的答案:。在onCheckedChange中,您需要一个复选框数组和变量检查
CheckBox[] cba;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
cba = new CheckBox[]{
(CheckBox)findViewById(R.id.check1),
(CheckBox)findViewById(R.id.check2),
(CheckBox)findViewById(R.id.check3),
(CheckBox)findViewById(R.id.check4),
(CheckBox)findViewById(R.id.check5),
(CheckBox)findViewById(R.id.check6)
};
//here set onChechedChange for all your checkboxes
for (CheckBox cb:cba) {
cb.setOnCheckedChangeListener(cbListener);
}
}
CompoundButton.OnCheckedChangeListener cbListener = new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
checkEnoughAndMakeDisabled(cba);
}
};
private void checkEnoughAndMakeDisabled(CheckBox checkBoxes[]){
int countChecked =0;
for (CheckBox cb:checkBoxes){
cb.setEnabled(true);
if (cb.isChecked()) countChecked++;
}
//your variable
if (a <= countChecked) {
for (CheckBox cb:checkBoxes){
if (!cb.isChecked())cb.setEnabled(false);
}
}
}
CheckBox[]cba;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
cba=新复选框[]{
(复选框)findViewById(R.id.check1),
(复选框)findViewById(R.id.check2),
(复选框)findViewById(R.id.check3),
(复选框)findViewById(R.id.check4),
(复选框)findViewById(R.id.check5),
(复选框)findViewById(R.id.check6)
};
//这里为所有复选框设置onchedchange
对于(复选框cb:cba){
cb.setOnCheckedChangeListener(cbListener);
}
}
CompoundButton.OnCheckedChangeListener cbListener=新建CompoundButton.OnCheckedChangeListener(){
@凌驾
检查更改后的公共无效(复合按钮视图,布尔值已检查){
选中“不足”和“禁用”(cba);
}
};
私有void checkenough和makedisabled(复选框[]){
int countChecked=0;
用于(复选框cb:复选框){
cb.setEnabled(真);
if(cb.isChecked())countChecked++;
}
//你的变量
如果(a您需要一个复选框数组和一个用于检查onCheckedChange中的变量的数组
CheckBox[] cba;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
cba = new CheckBox[]{
(CheckBox)findViewById(R.id.check1),
(CheckBox)findViewById(R.id.check2),
(CheckBox)findViewById(R.id.check3),
(CheckBox)findViewById(R.id.check4),
(CheckBox)findViewById(R.id.check5),
(CheckBox)findViewById(R.id.check6)
};
//here set onChechedChange for all your checkboxes
for (CheckBox cb:cba) {
cb.setOnCheckedChangeListener(cbListener);
}
}
CompoundButton.OnCheckedChangeListener cbListener = new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
checkEnoughAndMakeDisabled(cba);
}
};
private void checkEnoughAndMakeDisabled(CheckBox checkBoxes[]){
int countChecked =0;
for (CheckBox cb:checkBoxes){
cb.setEnabled(true);
if (cb.isChecked()) countChecked++;
}
//your variable
if (a <= countChecked) {
for (CheckBox cb:checkBoxes){
if (!cb.isChecked())cb.setEnabled(false);
}
}
}
CheckBox[]cba;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
cba=新复选框[]{
(复选框)findViewById(R.id.check1),
(复选框)findViewById(R.id.check2),
(复选框)findViewById(R.id.check3),
(复选框)findViewById(R.id.check4),
(复选框)findViewById(R.id.check5),
(复选框)findViewById(R.id.check6)
};
//这里为所有复选框设置onchedchange
对于(复选框cb:cba){
cb.setOnCheckedChangeListener(cbListener);
}
}
CompoundButton.OnCheckedChangeListener cbListener=新建CompoundButton.OnCheckedChangeListener(){
@凌驾
检查更改后的公共无效(复合按钮视图,布尔值已检查){
选中“不足”和“禁用”(cba);
}
};
私有void checkenough和makedisabled(复选框[]){
int countChecked=0;
用于(复选框cb:复选框){
cb.setEnabled(真);
if(cb.isChecked())countChecked++;
}
//你的变量
如果(a您需要一个复选框数组和一个用于检查onCheckedChange中的变量的数组
CheckBox[] cba;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
cba = new CheckBox[]{
(CheckBox)findViewById(R.id.check1),
(CheckBox)findViewById(R.id.check2),
(CheckBox)findViewById(R.id.check3),
(CheckBox)findViewById(R.id.check4),
(CheckBox)findViewById(R.id.check5),
(CheckBox)findViewById(R.id.check6)
};
//here set onChechedChange for all your checkboxes
for (CheckBox cb:cba) {
cb.setOnCheckedChangeListener(cbListener);
}
}
CompoundButton.OnCheckedChangeListener cbListener = new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
checkEnoughAndMakeDisabled(cba);
}
};
private void checkEnoughAndMakeDisabled(CheckBox checkBoxes[]){
int countChecked =0;
for (CheckBox cb:checkBoxes){
cb.setEnabled(true);
if (cb.isChecked()) countChecked++;
}
//your variable
if (a <= countChecked) {
for (CheckBox cb:checkBoxes){
if (!cb.isChecked())cb.setEnabled(false);
}
}
}
CheckBox[]cba;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
cba=新复选框[]{
(复选框)findViewById(R.id.check1),
(复选框)findViewById(R.id.check2),
(复选框)findViewById(R.id.check3),
(复选框)findViewById(R.id.check4),
(复选框)findViewById(R.id.check5),
(复选框)findViewById(R.id.check6)
};
//这里为所有复选框设置onchedchange
对于(复选框cb:cba){
cb.setOnCheckedChangeListener(cbListener);
}
}
CompoundButton.OnCheckedChangeListener cbListener=新建CompoundButton.OnCheckedChangeListener(){
@凌驾
检查更改后的公共无效(复合按钮视图,布尔值已检查){
选中“不足”和“禁用”(cba);
}
};
私有void checkenough和makedisabled(复选框[]){
int countChecked=0;
用于(复选框cb:复选框){
cb.setEnabled(真);
if(cb.isChecked())countChecked++;
}
//你的变量
如果(a您需要一个复选框数组和一个用于检查onCheckedChange中的变量的数组
CheckBox[] cba;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
cba = new CheckBox[]{
(CheckBox)findViewById(R.id.check1),
(CheckBox)findViewById(R.id.check2),
(CheckBox)findViewById(R.id.check3),
(CheckBox)findViewById(R.id.check4),
(CheckBox)findViewById(R.id.check5),
(CheckBox)findViewById(R.id.check6)
};
//here set onChechedChange for all your checkboxes
for (CheckBox cb:cba) {
cb.setOnCheckedChangeListener(cbListener);
}
}
CompoundButton.OnCheckedChangeListener cbListener = new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
checkEnoughAndMakeDisabled(cba);
}
};
private void checkEnoughAndMakeDisabled(CheckBox checkBoxes[]){
int countChecked =0;
for (CheckBox cb:checkBoxes){
cb.setEnabled(true);
if (cb.isChecked()) countChecked++;
}
//your variable
if (a <= countChecked) {
for (CheckBox cb:checkBoxes){
if (!cb.isChecked())cb.setEnabled(false);
}
}
}
CheckBox[]cba;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
cba=新复选框[]{
(复选框)findViewById(R.id.check1),
(复选框)findViewById(R.id.check2),
(复选框)findViewById(R.id.check3),
(复选框)findViewById(R.id.check4),
(复选框)findViewById(R.id.check5),
(复选框)findViewById(R.id.check6)
};
//这里为所有复选框设置onchedchange
对于(复选框cb:cba){
cb.setOnCheckedChangeListener(cbListener);
}
}
CompoundButton.OnCheckedChangeListener cbListener=新建CompoundButton.OnCheckedChangeListener(){
@凌驾
检查更改后的公共无效(复合按钮视图,布尔值已检查){
选中“不足”和“禁用”(cba);
}
};
私有void checkenough和makedisabled(复选框[]){
int countChecked=0;
用于(复选框cb:复选框){
cb.setEnabled(真);
if(cb.isChecked())countChecked++;
}
//你的变量
如果(a)