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POJava Buttons not being displayed?
 

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    <p>I am using the code below and I have a button that is not being displayed. I think it has something to do with "SetContentView" because if I remove one of them the button will show up. I am not sure how to get around this so that everything shows up? Thanks!</p> <pre><code>import java.util.List; import android.app.Activity; import android.os.Bundle; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiManager; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; public class TestActivity extends Activity { /** Called when the activity is first created. * @return */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button OffWifi = (Button)findViewById(R.id.offwifi); OffWifi.setOnClickListener(new OnClickListener() { public void onClick(View v) { WifiManager wifiManager = (WifiManager)getBaseContext().getSystemService(Context.WIFI_SERVICE); wifiManager.setWifiEnabled(false); } }); TextView tv = new TextView(this); TextView status = new TextView(this); WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); WifiConfiguration wc = new WifiConfiguration(); wc.SSID = "\"Test\""; //IMP! This should be in Quotes!! wc.hiddenSSID = true; wc.status = WifiConfiguration.Status.ENABLED; wc.priority = 10; wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK); wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN); wc.allowedProtocols.set(WifiConfiguration.Protocol.WPA); wc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); wc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED); wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP); wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP); wc.preSharedKey = "\"Password\""; WifiManager wifiManag = (WifiManager) this.getSystemService(WIFI_SERVICE); boolean res1 = wifiManag.setWifiEnabled(true); int res = wifi.addNetwork(checkPreviousConfiguration(wc)); Log.d("WifiPreference", "add Network returned " + res ); boolean es = wifi.saveConfiguration(); Log.d("WifiPreference", "saveConfiguration returned " + es ); boolean b = wifi.enableNetwork(res, true); Log.d("WifiPreference", "enableNetwork returned " + b ); tv.setText("You are now connected! " + "Version 1.1"); status.setText("The was an error connecting, please try again."); //@Override try { Thread.sleep(5000); ConnectivityManager connec = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE); if (connec != null &amp;&amp; (connec.getNetworkInfo(1).getState() == NetworkInfo.State.CONNECTED) ||(connec.getNetworkInfo(0).getState() == NetworkInfo.State.CONNECTED)){ //You are connected, do something online. setContentView(tv); }else if (connec.getNetworkInfo(0).getState() == NetworkInfo.State.DISCONNECTED || connec.getNetworkInfo(1).getState() == NetworkInfo.State.DISCONNECTED ) { //Not connected. setContentView(status); } } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public WifiConfiguration checkPreviousConfiguration(WifiConfiguration wc) { WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); List&lt;WifiConfiguration&gt; configs = wifi.getConfiguredNetworks(); for(WifiConfiguration config : configs) { if(config.SSID.equals(wc.SSID)) return config; } return wc; } } </code></pre> <p>Main XML File </p> <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" &gt; &lt;TextView android:id="@+id/tv" android:layout_width="246dp" android:layout_height="wrap_content" /&gt; &lt;Button android:id="@+id/offwifi" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Turn Wifi Off" /&gt; &lt;/LinearLayout&gt; </code></pre>
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