android中使用java代码设置控件获得焦点

eg：AutoCompleteTextView 控件

private AutoCompleteTextView autoCompleteTextView;


autoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.txtxcm_autoCompleteTextView1);// 找到相应的控件

//java代码设置获得焦点
autoCompleteTextView.setFocusable(true);
                autoCompleteTextView.setFocusableInTouchMode(true);
                autoCompleteTextView.requestFocus();
                autoCompleteTextView.requestFocusFromTouch();