Monday, May 30, 2011

[android-developers] Error on activity opnening

When i click the next button it force close ;

enter code here
05-30 23:46:21.595: VERBOSE/AudioHardwareMSM72XX(95): open driver
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): FATAL
EXCEPTION: main
05-30 23:46:21.775: ERROR/AndroidRuntime(3401):
java.lang.RuntimeException: Unable to start activity
ComponentInfo{yaraby.y/yaraby.y.yarab}: java.lang.NullPointerException
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2669)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2685)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.app.ActivityThread.access$2300(ActivityThread.java:126)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:2038)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.os.Handler.dispatchMessage(Handler.java:99)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.os.Looper.loop(Looper.java:123)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.app.ActivityThread.main(ActivityThread.java:4633)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
java.lang.reflect.Method.invokeNative(Native Method)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
java.lang.reflect.Method.invoke(Method.java:521)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at co
m.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:858)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
dalvik.system.NativeStart.main(Native Method)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): Caused by:
java.lang.NullPointerException
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
yaraby.y.yarab.onCreate(yarab.java:92)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1047)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2633)
05-30 23:46:21.775: ERROR/AndroidRuntime(3401): ... 11 more

Yaraby code

enter code here
public class yaraby extends Activity {
/** Called when the activity is first created. */
String sentence,sentence1, modifiedSentence;;
EditText inputfld, txt;
TextView Text;
Button Enter, Connect, next;
Socket clientSocket;

DataOutputStream outToServer;
BufferedReader inFromServer ;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
inputfld=(EditText)findViewById(R.id.input);
Text=(TextView)findViewById(R.id.view);
Enter=(Button)findViewById(R.id.enter);
Connect=(Button)findViewById(R.id.connect);
// yaraby x=new yaraby();
Text.append( "\n about to create a socket");


txt=(EditText)findViewById(R.id.txt);
next = (Button) findViewById(R.id.Button01);

next.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
try{
Text.append("PPPPP");
Intent i = new Intent(yaraby.this, yarab.class);

startActivity(i);
Text.append("OPS");
}
catch(Error e){
Log.e("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
e.getMessage());
Text.append("ofa7ay");
}

}});

}


public void appendText(View view){
Text.append( "\n In chat ");

try{
// while (true)
//{

sentence=inputfld.getText().toString();
sentence1="ingyyyy";
Text.append( "\n DataStream creating");
outToServer.writeBytes(sentence);
outToServer.writeBytes(sentence1);
Thread.sleep(1000);
modifiedSentence = inFromServer.readLine();
Text.append(modifiedSentence);
inputfld.setText(null);
//if(modifiedSentence.equals("QUIT"))
//break;
// }
}
catch(Exception modifiedsentence){
Text.append("Exception");
}


}


public void connect(View view){
try{
clientSocket= new Socket("192.168.1.6",54611);
Text.append( "\n created a socket");
outToServer = new
DataOutputStream(clientSocket.getOutputStream());
Text.append( "\n created a datastream");
inFromServer = new BufferedReader(new
InputStreamReader(clientSocket.getInputStream()));
Text.append( "\n created a bufferReader");
outToServer = new
DataOutputStream(clientSocket.getOutputStream());


}catch(Exception e){
System.out.println("Error");
}
}


}


yarab code

enter code here
public class yarab extends MapActivity

{
Socket clientSocket;
TextView Text;
private MapView mapView;
private MapController mc;
DataOutputStream outToServer;
BufferedReader inFromServer ;
Button start;
int error = 50;
GeoPoint p, p2;
List<Overlay> mapOverlays;
Drawable drawable, drawable2;
HelloItemizedOverlay itemizedOverlay, itemizedOverlay2;
LocationManager locationManager;

/** Called when the activity is first created. */

@Override
public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

/* Use the LocationManager class to obtain GPS locations */

LocationManager mlocManager = (LocationManager)
getSystemService(Context.LOCATION_SERVICE);

LocationListener mlocListener = new MyLocationListener();

mlocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, mlocListener);
mapView = (MapView) findViewById(R.id.mapView);

// enable Street view by default
mapView.setStreetView(true);

// enable to show Satellite view
mapView.setSatellite(true);

// enable to show Traffic on map
// mapView.setTraffic(true);
mapView.setBuiltInZoomControls(true);
// start=(Button)findViewById(R.id.start);

mc = mapView.getController();
// mapView.setStreetView(true);
// mapView.setSatellite(true);
mc.setZoom(12);
addOverLays();
// start= (Button) findViewById(R.id.start);

start.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
try{
Text.append("oogPPP");
Intent i = new Intent(yarab.this, yaraby.class);

startActivity(i);
Text.append("OwwwwPS");
}
catch(Error e){
e.setStackTrace(null);
}

}});

}


public void addOverLays() {
String[] coordinates = { "31.216487288475037", "29.932637214660645",
"30.084123015403748", "51.5002", "-0.1262";}
double lat = 29.98739718380868, lat2 = 29.987810254096985;
double log = 31.442527770886084, log2 = 31.44258677959442;
p = new GeoPoint((int) (lat * 1E6), (int) (log * 1E6));
p2 = new GeoPoint((int) (lat2 * 1E6 ), (int) (log2 * 1E6 ));

mapOverlays = mapView.getOverlays();
drawable = this.getResources().getDrawable(R.drawable.wit);
drawable2 = this.getResources().getDrawable(R.drawable.ballon);

itemizedOverlay = new HelloItemizedOverlay(drawable, this);
itemizedOverlay2 = new HelloItemizedOverlay(drawable2, this);

OverlayItem overlayitem = new OverlayItem(p, "Cairo", " over1");
OverlayItem over2 = new OverlayItem(p2, "ulm", "over2");


itemizedOverlay.addOverlay(overlayitem);

mapOverlays.add(itemizedOverlay);

itemizedOverlay2.addOverlay(over2);
mapOverlays.add(itemizedOverlay2);


mc.setZoom(17);
// mc.animateTo(p19);


}


public void Location(){

LocationManager myLocationManager =
(LocationManager)getSystemService(Context.LOCATION_SERVICE);


LocationListener mlocListener1 = new MyLocationListener();

LocationManager mlocManager1 = null;
mlocManager1.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, mlocListener1);
// Get the current location in start-up
GeoPoint initGeoPoint = new GeoPoint((int)
(myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER)
.getLatitude()*1000000),(int)
(myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER).getLongitude()*1000000));
mc.animateTo(initGeoPoint);
mc.setZoom(16);

drawable21 = this.getResources().getDrawable(R.drawable.ggg);
itemizedOverlay21 = new HelloItemizedOverlay(drawable21,this);
OverlayItem over21 = new OverlayItem(initGeoPoint, "offff",
"over21");

itemizedOverlay21.addOverlay(over21);
mapOverlays.add(itemizedOverlay21);
}


/* Class My Location Listener */

public class MyLocationListener implements LocationListener

{

@Override
public void onLocationChanged(Location loc)

{

GeoPoint point = new GeoPoint((int) (loc.getLatitude() * 1E6),
(int) (loc.getLongitude() * 1E6));

String Text = "My current location is: " +

"Latitud =" + loc.getLatitude()+

"Longitud =" +loc.getLongitude() ;// loc.getLongitude() ; //
loc.getLatitude()+"anoog" + (p3.getLatitudeE6() - error)

Toast.makeText(getApplicationContext(),

Text,

Toast.LENGTH_SHORT).show();


mc.animateTo(point);

}


private Resources getResources() {
// TODO Auto-generated method stub
return null;
}


public void onProviderDisabled(String provider)

{

Toast.makeText(getApplicationContext(),

"Gps Disabled",

Toast.LENGTH_SHORT).show();

}

public void onProviderEnabled(String provider)

{

Toast.makeText(getApplicationContext(),

"Gps Enabled",

Toast.LENGTH_SHORT).show();

}

public void onStatusChanged(String provider, int status, Bundle
extras)

{

}

protected boolean isRouteDisplayed() {
return false;
}

}/* End of Class MyLocationListener */

@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}

}

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