使用此

InputMethodManager imm =（InputMethodManager）getSystemService（Context.INPUT_METHOD_SERVICE）;
imm.showSoftInput（autoSuggestionTextView，InputMethodManager.SHOW_IMPLICIT）;

InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); imm.showSoftInput(autoSuggestionTextView,InputMethodManager.SHOW_IMPLICIT);