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嗨,大家好我是看着這個代碼,但IM努力理解super關鍵字做什麼,現在我知道它會調用父類的構造函數,但在這個例子中有犯規似乎是一個超類,以便即時通訊困惑。 所以那裏有在CustomArray的構造函數,然後調用其超不過什麼?的Android的ListView
public class customArray extends ArrayAdapter<String> {
int resource;
public customArray(Context cont, int _resource, List<String> items) {
super(cont, _resource, items);
resource = _resource;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
RelativeLayout rl;
String prod = getItem(position);
if (convertView == null) {
rl = new RelativeLayout(getContext());
LayoutInflater vi = (LayoutInflater) getContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
vi.inflate(resource, rl, true);
} else {
rl = (RelativeLayout) convertView;
}
TextView t1 = (TextView) rl.findViewById(R.id.text12);
t1.setText(prod);
final Button b1 = (Button) rl.findViewById(R.id.widget29);
b1.setText("efwrf");
if (position == 2) {
b1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent i = new Intent(this.class,Alarm.class);
startActivity(i);
// Alarm al = new Alarm(); //
b1.setText("alarm set");
}
});
}
'customArray'延伸'ArrayAdapter',所以這是你的超類。 '超(續,_resource,項目)'是調用父類的構造函數,有三個參數。 –
2010-03-11 22:44:32