Question

I tried to ask this question before but I guess I didnt explain myself properly, so I will try again. I have a spinner (spinner5), I have created two string arrays (name_array and type_array) which are inside the values folder.

I also have two radio buttons (radiobtn1 and radiobtn2). I want to basically change the source of spinner5 when each radio button is selected.

if (radiobtn1 is selected)
then
  I want spinner5 to display contents from name_array.

else If (radiobtn2 is selected)
then 
  I want spinner5 to display contents from the type_array.

Hope someone can help. Thanks

Answer 1

    Write below code in xml

    <RadioGroup 
         android:layout_toRightOf="@+id/txtpref"
         android:layout_marginLeft="10sp"
         android:orientation="horizontal"
             android:layout_width="wrap_content" 
         android:layout_height="wrap_content">
        <RadioButton 
            android:textColor="#000000"
            android:text="Male" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"
            android:id="@+id/radiobutton1"/>
        <RadioButton 
            android:textColor="#000000"
            android:text="Female"
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"
            android:id="@+id/radiobutton2"/>    
    </RadioGroup> 


    In Your Java file

    RadioButton radiobutton1,radiobutton2;
    String [] name_array,type_array;
    String [] temparray;

    temparray = (name_array or type_array) // use any which you want disaplay first and use temparray to pass your adapter 

ArrayAdapter arrayAdapter =new ArrayAdapter<String>(Activity_Name.this,android.R.layout.simple_spinner_item, temparray);
arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_it‌​em);

    radiobutton1 = (RadioButton) findViewById(R.id.radiobutton1);
    radiobutton2 = (RadioButton) findViewById(R.id.radiobutton2);

    radiobutton1.setOnCheckedChangeListener(new OnCheckedChangeListener() {

        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                    // TODO Auto-generated method stub
                    if (isChecked) {
                    // you want spinner5 to display contents from name_array.   
                                     temparray = name_array;
                                     your_adapter.notifyDataSetChanged();
                    }
                }
        });

    radiobutton2.setOnCheckedChangeListener(new OnCheckedChangeListener() {

        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                    // TODO Auto-generated method stub
                    if (isChecked) {
                    // you want spinner5 to display contents from type_array.   
                                     temparray = type_array;
                                     your_adapter.notifyDataSetChanged();
                    }
                }
            });


    Thanks