Here is my code:
package hu.wifx.droid;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.TextView;
import android.view.View;
import java.util.List;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiManager;
public class WifXActivity extends Activity {
TextView mText;
WifiManager mWifi;
List<ScanResult> wifiList;
StringBuilder _sb = new StringBuilder();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btn1 = (Button) findViewById(R.id.btn1);
btn1.setOnClickListener(new View.OnClickListener()
{
public void onClick(View arg0)
{
// TODO Auto-generated method stub
StartTester();
}
});
}
public void StartTester()
{
//startActivity(new Intent(this, WIfiScanner.class));
IntentFilter i = new IntentFilter();
i.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
mText = (TextView) findViewById(R.id.mainText);
mWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
registerReceiver(new BroadcastReceiver(){
public void onReceive(Context c, Intent i) {
WifiManager w = (WifiManager)
c.getSystemService(Context.WIFI_SERVICE);
wifiList = w.getScanResults();
_sb = new StringBuilder();
for(int m = 0; m < wifiList.size(); m++)
{
_sb.append((wifiList.get(m)).toString());
_sb.append("\\n");
}
mText.setText(_sb);
}
}, i);
WifiManager WM = (WifiManager)
getSystemService(Context.WIFI_SERVICE);
WM.setWifiEnabled(true);
WM.startScan();
}
}
No errors,
but when I start the emulator and click on button1:The application has
stopped unexpectedly. ....
Why?
Please help me!
Thanks.
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