Android软键盘监听器？

Question

我想听这个红色按钮，怎么办？

Answer 1

对于 Activity :

final View activityRootView = findViewById(R.id.activityRoot);
    activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
                @Override
                public void onGlobalLayout() {
                    Rect r = new Rect();

                    activityRootView.getWindowVisibleDisplayFrame(r);

                    int heightDiff = view.getRootView().getHeight() - (r.bottom - r.top);
                    if (heightDiff > 100) { 
                     //enter code when show keyboard
                    }else{
                     //enter code when hide keyboard
                    }
                }
            });

对于 fragment :

view = inflater.inflate(R.layout.live_chat_fragment, null);
view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                Rect r = new Rect();
                //r will be populated with the coordinates of your view that area still visible.
                view.getWindowVisibleDisplayFrame(r);

                int heightDiff = view.getRootView().getHeight() - (r.bottom - r.top);
                if (heightDiff > 500) { // if more than 100 pixels, its probably a keyboard...
                 //enter code when show keyboard
                }else{
                 //enter code when hide keyboard
                }
            }
        });