EditText request focus

I am designing a login page as:

UserName:  .....

Password:  .....

     LoginButton

When the activity starts, I want the focus to go to "UserName" textbox and the keyboard to appear.

I am using the following code:

    boolean checkFocus=user.requestFocus();
	Log.i("CheckFocus", ""+checkFocus);
	if(checkFocus==true)
	{
	InputMethodManager mgr = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
	mgr.showSoftInput(user, InputMethodManager.SHOW_IMPLICIT);
	}

I don't understand where to write this code to make the keyboard appear when the activity starts and focus is on the "UserName" editText box. Can anyone please guide me?

Programatically:

edittext.requestFocus();

Through xml:

<EditText...>
    <requestFocus />
</EditText>

Or call onClick method manually.

Yes, I got the answer.. just simply edit the manifest file as:

        <activity android:name=".MainActivity"
        android:label="@string/app_name"
        android:windowSoftInputMode="stateAlwaysVisible" />

and set EditText.requestFocus() in onCreate()..

Thanks..

youredittext.requestFocus() call it from activity

oncreate();

and use the above code there

It has worked for me as follows.

ed1.requestFocus();

            return; //Faça um return para retornar o foco

having the soft keyboard disabled (only external keyboards enabled), I fixed it by moving the cursors at the end on the EditText:

editText.setSelection(editText.getText().length)

edittext.requestFocus() works for me in my Activity and Fragment

>>you can write your code like

  if (TextUtils.isEmpty(username)) {
            editTextUserName.setError("Please enter username");
            editTextUserName.requestFocus();
            return;
        }

        if (TextUtils.isEmpty(password)) {
            editTextPassword.setError("Enter a password");
            editTextPassword.requestFocus();
            return;
        }

Set to the Activity in Manifest:

android:windowSoftInputMode="adjustResize"

Set focus, when a view is ready:

fun setFocus(view: View, showKeyboard: Boolean = true){
    view.post {
        if (view.requestFocus() && showKeyboard)
            activity?.openKeyboard() // call extension function
    }
}

I know its too late but only solution is working for me is

edittext.requestFocus()   
edittext.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(),SystemClock.uptimeMillis(),MotionEvent.ACTION_DOWN,0f,0f,0))    
edittext.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(),SystemClock.uptimeMillis(),MotionEvent.ACTION_UP,0f,0f,0))

I used this to open keyboard programatically.