有输入框，键盘自动弹出（输入法状态和控制）

InputMethodManager inputMethodManager = (InputMethodManager)              

getSystemService(Context.INPUT_METHOD_SERVICE);

  // 接受软键盘输入的编辑文本或其它视图

  imm.showSoftInput(submitBt,InputMethodManager.SHOW_FORCED);

InputMethodManager inputMethodManager = (InputMethodManager)               

getSystemService(Context.INPUT_METHOD_SERVICE);

inputMethodManager.hideSoftInputFromWindow(OpeListActivity.this.getCurrentFocus().getWindowToken(),

InputMethodManager.HIDE_NOT_ALWAYS);

//接受软键盘输入的编辑文本或其它视图

inputMethodManager.showSoftInput(submitBt,InputMethodManager.SHOW_FORCED);

InputMethodManager m=(InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

m.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);

InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
boolean isOpen=imm.isActive();
isOpen若返回true，则表示输入法打开

public static void showSoftInput(final EditText edittext) {
        Timer timer = new Timer();
        timer.schedule(new TimerTask() {
            public void run() {
                InputMethodManager inputManager =

                (InputMethodManager) edittext.getContext().getSystemService(
                        Context.INPUT_METHOD_SERVICE);
                inputManager.showSoftInput(edittext, 0);
            }
        }, 400);
    }

Config.showSoftInput(etUserName);