android checkbox全选不全选单选

android checkbox全选不全选单选

protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.group_list2);

initBottomBar();

listView = (ListView) findViewById(R.id.groupListView);

GroupService service = new GroupService(this);
groupList = service.getGroupList(null);
adapter = new GroupListAdapter(this, groupList);
listView.setAdapter(adapter);

listView.setOnItemClickListener(new OnItemClickListener() {

@Override
public void onItemClick(AdapterView adapterView, View view, int position,
long arg3) {
// TODO Auto-generated method stub
Group group = groupList.get(position);
CheckBox ctb = (CheckBox) view.findViewById(R.id.checkBox);
ctb.toggle();
adapter.selectedMap.put(group.id, ctb.isChecked());
adapter.notifyDataSetChanged();
if(adapter.selectedMap.containsValue(true)){
add2ScanListBtn.setEnabled(true);
}else{
add2ScanListBtn.setEnabled(false);
}
}
});

}

private void initBottomBar(){
bottomBarView = (LinearLayout) findViewById(R.id.bottomBar);
add2ScanListBtn = (Button) bottomBarView.findViewById(R.id.add2ScanListBtn);
add2ScanListBtn.setEnabled(false);
checkBtn = (Button) bottomBarView.findViewById(R.id.checkBtn);
closeCheckBtn = (Button) bottomBarView.findViewById(R.id.closeCheckBtn);

add2ScanListBtn.setOnClickListener(this);
checkBtn.setOnClickListener(this);
closeCheckBtn.setOnClickListener(this);
}

if(!checkbox.ischecked()){       checkbox.setchecked(true); }