Az et_02-be hogyan vigyek be adatot, saját billentyűzetről?

Button button, btn_sum, btn_next;

EditText et_01, et_02;

//TextView et_01, et_02;

TextView tv_11;

private InputConnection inputConnection, inputConnection_01, inputConnection_02;

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

et_01 = (EditText) findViewById(R.id.et_01);

et_02 = (EditText) findViewById(R.id.et_02);

tv_11 = (TextView) findViewById(R.id.tv_11);

// 01 a telefon keyboardja letiltva

et_01.requestFocus();

et_02.requestFocus();

et_01.setShowSoftInputOnFocus(false);

et_02.setShowSoftInputOnFocus(false);

// 01 itt a vége

//btn_next = (Button) findViewById(R.id.btn_next);

btn_sum = (Button) findViewById(R.id.btn_sum);

btn_sum.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

double num1 = Double.parseDouble(et_01.getText().toString());

double num2 = Double.parseDouble(et_02.getText().toString());

double sum = (num1+num2)*0.789;

tv_11.setText("Az eredmény= "+sum);

}

});

// 02 A számok megjelenitése és törlése egyenként

et_01.setTextIsSelectable(true);

inputConnection_01 = et_01.onCreateInputConnection(new EditorInfo());

et_02.setTextIsSelectable(true);

inputConnection_02 = et_02.onCreateInputConnection(new EditorInfo());

}

public void btnchar(final View view) {

button = (Button) findViewById(view.getId());

inputConnection_01.commitText(button.getText(), 1);

}

public void btnht(View view) {

switch (view.getId()) {

case R.id.btn_del:

if (et_01.length() !=0) inputConnection_01.deleteSurroundingText(1,0);

}

}

}