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各位大大，我想請問一下，我利用 BaseAdapter 取得附近的資料，但我想點擊某個 Item 後中的值，我利用
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
}
仍是無法取得其中的值，請知道的大大能告訴小弟，以下是程式碼的部分
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.sac_wifi); init(); Button(); }
private void Button() { start.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { getssid(); } }); back.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { startActivity(new Intent(SacWIFI.this,MainActivity.class)); finish(); } }); }
protected void getssid() { wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); openWifi(); list = wifiManager.getScanResults(); ListView listView = (ListView) findViewById(R.id.listView); if (list == null) { Toast.makeText(this, "wifi未打开！", Toast.LENGTH_LONG).show(); }else { listView.setAdapter(new MyAdapter(this,list)); } }
private void init() { start = (Button) findViewById(R.id.start); back = (Button) findViewById(R.id.back); } /** * 打开WIFI */ private void openWifi() { if (!wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(true); } }
public class MyAdapter extends BaseAdapter {
LayoutInflater inflater; List<ScanResult> list; public MyAdapter(Context context, List<ScanResult> list) { // TODO Auto-generated constructor stub this.inflater = LayoutInflater.from(context); this.list = list; }
@Override public int getCount() { // TODO Auto-generated method stub return list.size(); }
@Override public Object getItem(int position) { // TODO Auto-generated method stub return position; }
@Override public long getItemId(int position) { // TODO Auto-generated method stub return position; }
@Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub View view = null; view = inflater.inflate(R.layout.wifilist, null); ScanResult scanResult = list.get(position); TextView textView = (TextView) view.findViewById(R.id.textView); textView.setText(scanResult.SSID); TextView signalStrenth = (TextView) view.findViewById(R.id.signal_strenth); signalStrenth.setText(String.valueOf(Math.abs(scanResult.level))); ImageView imageView = (ImageView) view.findViewById(R.id.imageView); //判断信号强度，显示对应的指示图标 if (Math.abs(scanResult.level) > 100) { imageView.setImageDrawable(getResources().getDrawable(R.drawable.stat_sys_wifi_signal_0)); } else if (Math.abs(scanResult.level) > 80) { imageView.setImageDrawable(getResources().getDrawable(R.drawable.stat_sys_wifi_signal_1)); } else if (Math.abs(scanResult.level) > 70) { imageView.setImageDrawable(getResources().getDrawable(R.drawable.stat_sys_wifi_signal_1)); } else if (Math.abs(scanResult.level) > 60) { imageView.setImageDrawable(getResources().getDrawable(R.drawable.stat_sys_wifi_signal_2)); } else if (Math.abs(scanResult.level) > 50) { imageView.setImageDrawable(getResources().getDrawable(R.drawable.stat_sys_wifi_signal_3)); } else { imageView.setImageDrawable(getResources().getDrawable(R.drawable.stat_sys_wifi_signal_4)); } return view; }
}
} | 
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