android 开发网络程序

核心提示：public class Main extends ListActivity { private int mode = XML; // default @Override public void onCreate(Bundle savedInstanceState) { super.on

public class Main extends ListActivity {

    private int mode = XML; // default
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        final EditText input = (EditText) findViewById(R.id.symbol);
        final TextView symbolsList = (TextView) findViewById(R.id.symList);
        final Button addButton = (Button) findViewById(R.id.addBtn);
        final Button dlButton = (Button) findViewById(R.id.dlBtn);
        addButton.setOnClickListener(new OnClickListener(){
            public void onClick(View v) {
                String newSymbol = input.getText().toString();
                if (symbolsList.getText() == null || 
                        symbolsList.getText().length() == 0){
                    symbolsList.setText(newSymbol);
                } else {
                    StringBuilder sb = 
                                  new StringBuilder(symbolsList.getText());
                    sb.append(",");
                    sb.append(newSymbol);
                    symbolsList.setText(sb.toString());
                }
                input.setText("");
            }
        });
        dlButton.setOnClickListener(new OnClickListener(){
            public void onClick(View v) {
                String symList = symbolsList.getText().toString();
                String[] symbols = symList.split(",");
                symbolsList.setText("");
                switch (mode){
                case JSON :
                    new StockJsonParser().execute(symbols);
                    break;
                case PROTOBUF :
                    new StockProtoBufParser().execute(symbols);
                    break;
                default :
                    new StockXmlParser().execute(symbols);
                    break;
                }
            }
        });
    }
}