Question

i call this method SolveUpdation (from button- onclickAction Listener) from mainAcitivity with main layout. i use other layout to get value from user and set it as button title in the main layout and that is only instruction that does not works for me

    private void  SolveUpdation() {     //this function call is generated from the main Activity with main layout       
        setContentView(R.layout.updateappliance); //this is 2nd layout to get values from user and use them as buttonText in the main layout   

        btnSaveApp = (Button) findViewById(R.id.Bupdatenow);
        btnSaveApp.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {       
                // TODO Auto-generated method stub
                  mOutEditText = (EditText) findViewById(R.id.edit_text_1);               
                  TextView view1 = (TextView) findViewById(R.id.edit_text_1);
                  final String TitleApp1 = view1.getText().toString();  //the value is read properly here

//                if (App1.length() > 0) {
//                    byte[] send = App1.getBytes();
//                }

                btnSaveApp.setText(TitleApp1); //this works fine
                startActivity(new Intent(HomeScreen.this, HomeScreen.class));//this the main activity for main layout
                setContentView(R.layout.main); //this is the main layout and this instruction works
                buttonLED1.setText(TitleApp1); //buttonLED1 (a Togglebutton or can be simple) is  defined in main layout and this does not works and this is what i am stuck with
                SaveAppNamesToast(TitleApp1);   //this is just to toast the value and it works fine.
            }});

So plz can any one guide me why this instruction buttonLED1.setText(TitleApp1); does not works ??? Any help will be appreciatable.. thanks

Answer 1

No offense, but the way you write your code is not a good practice.
My advise: Stop calling another setContentView in your Main Activity. You should rather implement all needed Buttons and EditTexts in one layout and set their visiblity to gone or visible depending on which button was clicked.

If you don’t wanna do this you should create a second class that handles the input of the user. After pressing the save button you initialize your intent for the main activity and give it via intent.putExtra("KEY", value) the input of the user.
Your Main Activity can receive this value via getIntent().getExtras().getInt("KEY").

By the way: I think your current code doesn’t work because of the new Activity you start. Through this everything gets initialized again so the buttonLED1 that you see isn’t the same buttonLED1 that gets the text.