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873天前import android.app.ListActivity; |
import android.os.Bundle; |
import android.view.Menu; |
import android.view.MenuItem; |
import android.view.View; |
import android.widget.ArrayAdapter; |
import android.widget.ListView; |
import android.widget.Toast; |
/** |
* ListActivity 实例 |
*/ |
public class EX04_20 extends ListActivity { |
private int selectedItem = -1; |
private String[] mString; |
static final private int MENU_LIST1 = Menu.FIRST; |
static final private int MENU_LIST2 = Menu.FIRST + 1; |
private ArrayAdapter<String> mla; |
@Override |
protected void onCreate(Bundle savedInstanceState) { |
// TODO Auto-generated method stub |
super.onCreate(savedInstanceState); |
} |
@Override |
protected void onListItemClick(ListView l, View v, int position, long id) { |
// TODO Auto-generated method stub |
selectedItem = position; |
Toast.makeText(EX04_20.this, mString[selectedItem], Toast.LENGTH_SHORT) |
.show(); |
super.onListItemClick(l, v, position, id); |
} |
@Override |
public boolean onCreateOptionsMenu(Menu menu) { |
// TODO Auto-generated method stub |
/* menu群组ID */ |
int idGroup1 = 0; |
/* The order position of the item */ |
int orderMenuItem1 = Menu.NONE; |
int orderMenuItem2 = Menu.NONE + 1; |
menu.add(idGroup1, MENU_LIST1, orderMenuItem1, R.string.str_menu_list1); |
menu.add(idGroup1, MENU_LIST2, orderMenuItem2, R.string.str_menu_list2); |
return super.onCreateOptionsMenu(menu); |
} |
@Override |
public boolean onOptionsItemSelected(MenuItem item) { |
// TODO Auto-generated method stub |
switch (item.getItemId()) { |
case (MENU_LIST1): |
mString = new String[] { |
getResources().getString(R.string.str_list1), |
getResources().getString(R.string.str_list2), |
getResources().getString(R.string.str_list3), |
getResources().getString(R.string.str_list4) }; |
mla = new ArrayAdapter<String>(EX04_20.this, R.layout.main, mString); |
EX04_20.this.setListAdapter(mla); |
break; |
case (MENU_LIST2): |
mString = new String[] { |
getResources().getString(R.string.str_list5), |
getResources().getString(R.string.str_list6), |
getResources().getString(R.string.str_list7), |
getResources().getString(R.string.str_list8) }; |
mla = new ArrayAdapter<String>(EX04_20.this, R.layout.main, mString); |
EX04_20.this.setListAdapter(mla); |
break; |
} |
return super.onOptionsItemSelected(item); |
} |
} |
