public class Activity extends Activity implements View.OnClickListener
{
    private Spinner spinner0,spinner1,spinner2,spinner3;
    private Button submit,cancel;
 
    private String country[],state[],city[],area[];
 
    Australia aus = new Australia();
 
    Object object;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        spinner0 = (Spinner)findViewById(R.id.spinnerCountry);
        spinner1 = (Spinner)findViewById(R.id.spinnerQ1);
        spinner2 = (Spinner)findViewById(R.id.spinnerQ2);
        spinner3 = (Spinner)findViewById(R.id.spinnerQ3);
 
        submit = (Button)findViewById(R.id.btnSubmit);
        cancel = (Button)findViewById(R.id.btnCancel);
 
        submit.setOnClickListener(this);
        cancel.setOnClickListener(this);
 
        country = new String[] {"Select Country","Australia","USA","UK","New Zealand","EU","Europe","China","Hong Kong","India","Malaysia","Canada","International","Asia","Africa"};
 
 
        ArrayAdapter<String> adapter0 = new ArrayAdapter<String>(Activity.this,android.R.layout.simple_spinner_item,country);
        adapter0.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
        spinner0.setAdapter(adapter0);
        Log.i("AAA","spinner0");
 
        spinner0.setOnItemSelectedListener(new OnItemSelectedListener()
        {           
            @Override
            public void onItemSelected(AdapterView<?> arg0,View view1,int pos,long id)
            {
                Log.i("AAA","OnItemSelected");
                int loc;
                loc = pos;
 
                switch (loc)
                {
                case 1:
 
                    state = aus.getState();
                    object = aus;
 
                    Log.i("AAA","ArrayAdapter1");                   
                    ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(Activity.this,state);
                    adapter1.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
                    spinner1.setAdapter(adapter1);          Log.i("AAA","spinner1");
                    break;
 
                default:
                    Log.i("AAA","default 0");
                    break;
                }                               
            }       
 
            @Override
            public void onNothingSelected(AdapterView<?> arg1)
            {
                Log.i("AAA","Nothing S0");
 
            }
        });
 
       spinner1.setOnItemSelectedListener(new OnItemSelectedListener()
       {
            @Override
            public void onItemSelected(AdapterView<?> arg0,long id) 
            {
                Log.i("AAA","OnItemSelected S1");
                int loc = pos;
                switch(loc)
                {
                    case 1:
                        Log.i("AAA","Australia");
                        if(object.equals(aus))
                        {
                            city = aus.getType(loc);
                        }
                        else
                        {
                            break;
                        }
 
 
                        ArrayAdapter<String> adapter = new ArrayAdapter<String>(Activity.this,city);
                        adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
                        spinner2.setAdapter(adapter);           Log.i("AAA","spinner2");
                        break;
 
                    default:
                            Log.i("AAA","default 1");
                        break;
 
                }
            }
            @Override
            public void onNothingSelected(AdapterView<?> arg0)
            {
                Log.i("AAA","Nothing S1");              
            }
 
        }); 
 
       spinner2.setOnItemSelectedListener(new OnItemSelectedListener()
       {
 
        @Override
        public void onItemSelected(AdapterView<?> arg0,View arg1,long id)
        {
            int loc = pos;
            switch (loc)
            {
            case 1:
                if(object.equals(aus))
                {
                    area = aus.getTitle(loc);
                }
 
                ArrayAdapter<String> adapter = new ArrayAdapter<String>(Activity.this,area);
                adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
                spinner3.setAdapter(adapter);           Log.i("","spinner3");               
                break;
 
            default:
                break;
            }
 
        }
 
        @Override
        public void onNothingSelected(AdapterView<?> arg0) 
        {
            // TODO Auto-generated method stub          
        }
       });
 
    }// on-create
 
 
    @Override
    public void onClick(View v)
    {
        switch (v.getId())
        {
        case R.id.btnSubmit:
 
            break;
 
        case R.id.btnCancel:
            finish();
            break;
 
        default:
            break;
        }       
    }   
}

如果你觉得这很有用,那就放弃投票,让别人可以很容易地找到一个很好的答案.

对于每个国家,你必须为它创建一个课程,只需添加州,城市&区.这样一来,它就不会变成一个单一的网格.

玩的开心.

问候,

HAPS.