Android 输入法 控制 切换

http://blog.csdn.net/wdzayyt/article/details/7489551
    accountEditText.requestFocus();
        InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(getActivity().INPUT_METHOD_SERVICE);
        imm.toggleSoftInput(0, InputMethodManager.RESULT_SHOWN);

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 getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);