[英]On Button click to check whether the radio buttons are selected
I'm Developing an android app in which the Questionnaire activity contains Questions which as radio Buttons and also a Button(Next).So when the button is pressed I've to check whether all the Questions are answered.if any of the Question is not answered then a alert message should pop up stating that the particular Question no is not answered.Can anyone please help me with the java code. 我正在开发一个Android应用程序,其中``问卷调查''活动包含作为单选按钮和一个Button(Next)的问题。所以当按下按钮时,我必须检查是否所有问题都已得到回答。如果未回答,则应弹出一条警告消息,指出未回答特定的问题号。任何人都可以通过Java代码帮助我。 Thanks in Advance.
提前致谢。
Here is the Java code. 这是Java代码。 I've commented on the line where I'm getting an error.
我在出现错误的行中发表了评论。
public class ManagerQuestionnaire1 extends Activity
{
RadioButton rb1;
RadioButton rb2;
RadioButton rb3;
RadioButton rb4;
RadioButton rb5;
RadioButton rb6;
RadioButton rb7;
RadioButton rb8;
RadioButton rb9;
RadioGroup rg1;
RadioGroup rg2;
RadioGroup rg3;
Button next;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_manager_questionnaire1);
addButtonListener();
}
public void addButtonListener()
{
rb1=(RadioButton)findViewById(R.id.radioButton1);
rb2=(RadioButton)findViewById(R.id.radioButton2);
rb3=(RadioButton)findViewById(R.id.radioButton3);
rb4=(RadioButton)findViewById(R.id.radioButton4);
rb5=(RadioButton)findViewById(R.id.radioButton5);
rb6=(RadioButton)findViewById(R.id.radioButton6);
rb7=(RadioButton)findViewById(R.id.radioButton7);
rb8=(RadioButton)findViewById(R.id.radioButton8);
rb9=(RadioButton)findViewById(R.id.radioButton9);
rg1=(RadioGroup)findViewById(R.id.Mquestion1);
rg2=(RadioGroup)findViewById(R.id.Mquestion2);
rg3=(RadioGroup)findViewById(R.id.Mquestion3);
Button next=(Button)findViewById(R.id.button1);
next.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v)
{
if(validationSuccess()){
Intent intent = new Intent(ManagerQuestionnaire1.this, ManagerQuestionnaire2.class);
startActivity(intent);
}
}
});
}
private Boolean validationSuccess()
{
if(rg1.getCheckedRadioButtonId()==-1&&rg2.getCheckedRadioButtonId()==-1&&rg3.getCheckedRadioButtonId()==-1)
{
alertDialog();
return false;
}
if(rb1.isChecked()==false&rb2.isChecked()==false&&rb3.isChecked()==false)
{
alertDialog();
return false;
}
if(rb4.isChecked()==false&&rb5.isChecked()==false&&rb6.isChecked()==false)
{
alertDialog();
return false;
}
if(rb7.isChecked()==false&&rb8.isChecked()==false&&rb9.isChecked()==false)
{
alertDialog();
return false;
}
return true;
}
private void alertDialog()
{
AlertDialog alert= new AlertDialog.Builder(ManagerQuestionnaire1.this).create();
alert.setTitle("Exception:Complete the Questions");
alert.setMessage("Please ensure all Questions are answered");
}
您可以通过以下方式获取特定RadioGroup
选中的RadioButton
的id
:
int selectedId = radioGroup.getCheckedRadioButtonId();
You can try something like below. 您可以尝试以下类似方法。
public void onClick(View v) {
int checked = rg1.getCheckedRadioButtonId();
switch(checked)
{
case R.id.always:
Toast.makeText(ManagerQuestionnaire1 .this, "First is selected", Toast.LENGTH_SHORT).show();
break;
case R.id.sometime:
Toast.makeText(ManagerQuestionnaire1 .this, "Second is selected", Toast.LENGTH_SHORT).show();
break;
case R.id.notatall:
Toast.makeText(ManagerQuestionnaire1 .this, "Third is selected", Toast.LENGTH_SHORT).show();
break;
default:
Toast.makeText(ManagerQuestionnaire1 .this, "pleas check any button", Toast.LENGTH_SHORT).show();
break;
}
}
If you want to show Alert dialog instead of toast then you can replace it with alert dialog. 如果要显示警报对话框而不是吐司,则可以将其替换为警报对话框。 Like wise same for your
rg2
and rg3
you can check. 与您的
rg2
和rg3
一样,您可以检查。
you must be having multiple radiogroups on the screen. 您必须在屏幕上具有多个无线电组。
Here is the example to check whether any all questions are attempted or not in your case 这是检查您是否遇到所有问题的示例
int radioGroupIds = new int []{R.id.rg1, R.id.rg2, r.id.rg3};
for(int rg : radioGroupIds)
{
int selectedAns = (RadioGroup)findViewById(rg).getCheckedRadioButtonId();
// Returns the identifier of the selected radio button in this group. Upon empty selection, the returned value is -1.
if(selectedAns == -1)
{
// TODO answer is not selected
// This represents that there is missing answer of any question
}else
{
// TODO answer is selected
// This represents that answer is selected for question
}
}
You may also use below code: 您还可以使用以下代码:
next.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(validationSuccess()){
Intent intent = new Intent(ManagerQuestionnaire1.this, ManagerQuestionnaire2.class);
startActivity(intent);
}
}
});
private Boolean validationSuccess(){
if(rg1.getCheckedRadioButtonId()==-1&&rg2.getCheckedRadioButtonId()==-1&&rg3.getCheckedRadioButtonId()==-1){
alertDialog();
return false;
}
//optional to add whether to check which questn is not answered
if(mBtn1.isChecked()==false&&mBtn2.isChecked()==false&&mBtn3.isChecked()==false){
alertDialog();
return false;
}
if(mBtn4.isChecked()==false&&mBtn5.isChecked()==false&&mBtn6.isChecked()==false){
alertDialog();
return false;
}
if(mBtn7.isChecked()==false&&mBtn8.isChecked()==false&&mBtn9.isChecked()==false){
alertDialog();
return false;
}
return true;
}
private void alertDialog() {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
ManagerQuestionnaire1.this);
alertDialogBuilder.setMessage("Please ensure all Questions are answered")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = alertDialogBuilder.create();
alert.show();
}
where mBtn1,mBtn2..are your radioButton's 其中mBtn1,mBtn2 ..是您的radioButton的
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