I'm new at java and i would like to know how to click multiple buttons on same page without making the app force close. I tried to make the code more simple. For now , the first button is work well but the second button will force close the app when get clicked.
Im sorry if im not clear enough to explain my problem
im open for any advices
public static enum CONN_TYPE {
LEJOS_PACKET, LEGO_LCP
}
class UIMessageHandler extends Handler {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE:
_message.setText((String) msg.getData().get(MESSAGE_CONTENT));
break;
case TOAST:
showToast((String) msg.getData().get(MESSAGE_CONTENT));
break;
}
_message.setVisibility(View.VISIBLE);
_message.requestLayout();
}
}
public static final String MESSAGE_CONTENT = "String_message";
public static final int MESSAGE = 1000;
public static final int TOAST = 2000;
private BTSend Right;
private TachoCount tachoCount;
private Toast reusableToast;
private TextView _message;
//static final String START_MESSAGE = "Please make sure you NXT is on and both it and your Android handset have bluetooth enabled";
private static final String GO_AHEAD = "Choose one!";
public static UIMessageHandler mUIMessageHandler;
private final static String TAG = "LeJOSDroid";
public static NXTConnector connect(final CONN_TYPE connection_type) {
Log.d(TAG, " about to add LEJOS listener ");
NXTConnector conn = new NXTConnector();
conn.setDebug(true);
conn.addLogListener(new NXTCommLogListener() {
public void logEvent(String arg0) {
Log.e(TAG + " NXJ log:", arg0);
}
public void logEvent(Throwable arg0) {
Log.e(TAG + " NXJ log:", arg0.getMessage(), arg0);
}
});
switch (connection_type) {
case LEGO_LCP:
conn.connectTo("btspp://NXT", NXTComm.LCP);
break;
case LEJOS_PACKET:
conn.connectTo("btspp://");
break;
}
return conn;
}
public static void displayToastOnUIThread(String message) {
Message message_holder = formMessage(message);
message_holder.what = LeJOSDroid.TOAST;
mUIMessageHandler.sendMessage(message_holder);
}
private static Message formMessage(String message) {
Bundle b = new Bundle();
b.putString(LeJOSDroid.MESSAGE_CONTENT, message);
Message message_holder = new Message();
message_holder.setData(b);
return message_holder;
}
public static void sendMessageToUIThread(String message) {
Message message_holder = formMessage(message);
message_holder.what = LeJOSDroid.MESSAGE;
mUIMessageHandler.sendMessage(message_holder);
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mUIMessageHandler = new UIMessageHandler();
setContentView(R.layout.main);
_message = (TextView) findViewById(R.id.messageText);
seupNXJCache();
setupTachoCount(this);
setupRight(this);
setupBackward(this);
reusableToast = Toast.makeText(this, "", Toast.LENGTH_SHORT);
}
@Override
protected void onPause() {
super.onPause();
if (Right != null) {
Log.d(TAG, "onPause() closing btSend ");
Right.closeConnection();
Right = null;
}
if (tachoCount != null) {
Log.d(TAG, "onPause() closing btSend ");
tachoCount.closeConnection();
}
}
@Override
protected void onResume() {
super.onResume();
}
public void onCreate1 (Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button3 = (Button) findViewById(R.id.button3);
Button button1 = (Button) findViewById(R.id.button1);
Button button2 = (Button) findViewById(R.id.button2);
button2.setOnClickListener(new View.OnClickListener(){
public void onClick(View arg0) {
switch(arg0.getId()){
case R.id.button2:
try {
tachoCount = new TachoCount();
_message.setVisibility(View.INVISIBLE);
tachoCount.start();
} catch (Exception e) {
Log.e(TAG, "failed to run BTSend:" + e.getMessage(), e);
}
break;
}
}
});
button3.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
switch(arg0.getId()){
case R.id.button3:
try {
tachoCount = new TachoCount();
_message.setVisibility(View.INVISIBLE);
tachoCount.start();
} catch (Exception e) {
Log.e(TAG, "failed to run TachoCount:" + e.getMessage(), e);
}
break;
}
}
});
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
switch(arg0.getId()){
case R.id.button1:
try {
tachoCount = new TachoCount();
_message.setVisibility(View.INVISIBLE);
tachoCount.start();
} catch (Exception e) {
Log.e(TAG, "failed to run TachoCount:" + e.getMessage(), e);
}
break;
}
}
});
}
private void seupNXJCache() {
File root = Environment.getExternalStorageDirectory();
try {
String androidCacheFile = "nxj.cache";
File mLeJOS_dir = new File(root + "/leJOS");
if (!mLeJOS_dir.exists()) {
mLeJOS_dir.mkdir();
}
File mCacheFile = new File(root + "/leJOS/", androidCacheFile);
if (root.canWrite() && !mCacheFile.exists()) {
FileWriter gpxwriter = new FileWriter(mCacheFile);
BufferedWriter out = new BufferedWriter(gpxwriter);
out.write("");
out.flush();
out.close();
_message.setText("nxj.cache (record of connection addresses) written to: " + mCacheFile.getName() + GO_AHEAD);
} else {
_message.setText("nxj.cache file not written as"
+ (!root.canWrite() ? mCacheFile.getName() + " can't be written to sdcard." : " cache already exists.") + GO_AHEAD);
}
} catch (IOException e) {
Log.e(TAG, "Could not write nxj.cache " + e.getMessage(), e);
}
_message.setVisibility(View.VISIBLE);
_message.requestLayout();
}
private void showToast(String textToShow) {
reusableToast.setText(textToShow);
reusableToast.show();
}
}
