一、打开输入法窗口:
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);


二、关闭输入入法窗口
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);


三、如果输入法打开则关闭，如果没打开则打开
InputMethodManager m=(InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
m.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);


四、获取输入法打开的状态
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


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// 设置输入法弹出时不压缩界面
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);