1
如何在使用微調對象時使用if語句?微調對象引用問題?
我想在Android中使用make a page like this。
我已經完成了按鈕和旋鈕的編碼,並且我使用了一個數組來存儲微調器中的值。
我的問題:當我在兩個spinners中選擇一些值並單擊「SHOW FARE」按鈕時,不會生成票價?
public class HelloSpinner extends Activity implements OnClickListener {
/** Called when the activity is first created.
* @return */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Spinner spinner = (Spinner) findViewById(R.id.spinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.source_array, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<CharSequence> adapter2 = ArrayAdapter.createFromResource(
this, R.array.destination_array, android.R.layout.simple_spinner_item);
adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter);
View v= findViewById(R.id.button);
v.setOnClickListener(this);
if(spinner.getSelectedItem().toString()=="Adarsh Nagar"
&& spinner1.getSelectedItem().toString()=="Rajiv Chowk")
{
TextView t= (TextView) findViewById(R.id.text);
t.setText("Fare:Rs. 16");
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.button:
Intent i = new Intent(this,Fare.class);
startActivity(i);
break;
}
}
}
如果有人能在代碼中發現錯誤,我將不勝感激!
thanx Venkatesh ... it works – sarva 2011-03-27 06:21:43