entends:http://stackoverflow.com/questions/36837066/how-to-validate-virtual-keyboard-visibility
监听键盘弹出和收起.
/*
Somewhere else in your code
*/ RelativeLayout mainLayout = findViewById(R.layout.main_layout); // You must use your root layout
InputMethodManager im = (InputMethodManager) getSystemService(Service.INPUT_METHOD_SERVICE); /*
Instantiate and pass a callback
*/ SoftKeyboard softKeyboard;
softKeyboard = new SoftKeyboard(mainLayout, im);
softKeyboard.setSoftKeyboardCallback(new SoftKeyboard.SoftKeyboardChanged()
{
@Override
public void onSoftKeyboardHide()
{
// Code here
} @Override
public void onSoftKeyboardShow()
{
// Code here
}
}); /*
Open or close the soft keyboard programatically
*/ softKeyboard.openSoftKeyboard();
softKeyboard.closeSoftKeyboard(); /*
SoftKeyboard can catch keyboard events when an EditText gains focus and keyboard appears
*/ /* Prevent memory leaks:
*/ @Override
public void onDestroy()
{
super.onDestroy();
softKeyboard.unRegisterSoftKeyboardCallback();
}
final View parentView= findViewById(R.id.myrootview);
parentView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
int heightDiff = root.getRootView().getHeight() - root.getHeight(); Rect rectgle= new Rect();
Window window= getWindow();
window.getDecorView().getWindowVisibleDisplayFrame(rectgle);
int contentViewTop=
window.findViewById(Window.ID_ANDROID_CONTENT).getTop(); if(heightDiff <= contentViewTop){
//Soft KeyBoard Hidden---button visible }else{
//Soft KeyBoard Shown---button hide
} }
});