krishna krishna - 1 month ago 14
Android Question

create N number of Edittext on button click

I want to create Edittext one below one on a button click.So i tried the following code.

private LinearLayout mLayout;
private EditText mEditText;
private Button mButton;
int k = -1;
int flag;
int ss=0;
ArrayList<String> applnserverinstnos = new ArrayList<String>();
EditText textView[] = new EditText[100];

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mLayout = (LinearLayout) findViewById(R.id.linearLayout);
mEditText = (EditText) findViewById(R.id.editText);
mButton = (Button) findViewById(R.id.button);
mButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub

k++;

flag=k;
final LayoutParams lparams = new LayoutParams(LayoutParams.WRAP_CONTENT, 50);
lparams.setMargins(20, 20, 20, 0);
textView[flag] = new EditText(AddEditBoxActivity.this);
textView[flag].setLayoutParams(lparams);
textView[flag].setId(flag);
applnserverinstnos.add(flag,Integer.toString(flag));
textView[flag].addTextChangedListener(new TextWatcher() {

@Override
public void onTextChanged(CharSequence s, int start, int before, int count)
{
// TODO Auto-generated method stub

}

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after)
{
// TODO Auto-generated method stub

}

@Override
public void afterTextChanged(Editable s)
{
// TODO Auto-generated method stub
String c = s.toString(); // read Content
applnserverinstnos.add(flag,c);
System.out.println("insno "+applnserverinstnos.get(flag));
}
});

mLayout.addView(textView[flag]);


}
});
TextView textView = new TextView(this);
Button b2= (Button)findViewById(R.id.button1);
b2.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
for(int i = 0;i<=k;i++)
{
System.out.println("applserver "+i+".."+applnserverinstnos.get(i));
}
}
});

}


This creates the edittext one below one.I tried creating 3 edittext.But when i try to enter texts into edit text it throws following error.

06-13 12:44:47.686: E/AndroidRuntime(1665): java.lang.IndexOutOfBoundsException: Invalid index 3, size is 0


Please help me to find it.
Thank You.

EDIT

after adding
applnserverinstnos.add(flag,Integer.toString(flag));
it is not throwing error but the text changed in edittext one is not storing in position one instead it is storing in last position

Answer

Finally i found solution which is very simple and small.Now the following code creates N number of edittexts and also get the value from those edittexts created.

 private LinearLayout mLayout;
    private EditText mEditText;
    private Button mButton;
    int k = -1;
    int flag;
    int ss=0;
    ArrayList<String> applnserverinstnos = new ArrayList<String>();
    public static EditText textView[] = new EditText[100];

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mLayout = (LinearLayout) findViewById(R.id.linearLayout);
        mEditText = (EditText) findViewById(R.id.editText);
        mButton = (Button) findViewById(R.id.button);
        mButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                try
                {
                k++;
                flag=k;
                final LayoutParams lparams = new LayoutParams(LayoutParams.WRAP_CONTENT, 50);
                lparams.setMargins(20, 20, 20, 0);
                textView[flag] = new EditText(AddEditBoxActivity.this);
                textView[flag].setLayoutParams(lparams);
                textView[flag].setId(flag);

                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }
                mLayout.addView(textView[flag]);


            }
        });

        Button b2= (Button)findViewById(R.id.button1);
        b2.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                for(int i = 0;i<=k;i++) 
                {
                System.out.println("edit values"+ss+"......"+ textView[i].getText().toString());
                }
            }
        });

    }

Hope it helps others.

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