检测软键盘隐藏状态 [英] Detecting Soft Keyboard Hidden State

问题描述

每次软键盘状态从显示更改为隐藏时，都希望输入Toast文本.在这里，我只想从EditText中选择getText()，每次单击EditText时，都必须打开软键盘，然后按回车键或返回后，文本必须显示为Toast

Want to Toast a text everytime when soft keyboard state changes from shown to hidden. Here I just want to getText() from EditText and everytime I click on EditText the soft Keyboard must open and after pressing back or return the text must be shown as Toast

预先感谢

推荐答案

没有用于键盘状态检测的直接侦听器，因此您需要以下一些编程实现

There is no direct listener for keyboard state detection so you need some programatic implementation as below

private boolean wasKeyboardOpen = false;

try {
        activityMainView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {

                Rect r = new Rect();
                activityMainView.getWindowVisibleDisplayFrame(r);

                int heightDiff = activityMainView.getRootView().getHeight() - (r.bottom - r.top);
                if (heightDiff > 100) {
                    wasKeyboardOpen = true;
                    // kEYBOARD IS OPEN

                } else {
                    if (wasKeyboardOpen) {
                        wasKeyboardOpen = false;
                        // Do your toast here

                    }
                    // kEYBOARD IS HIDDEN
                }
            }
        });
    } catch (Throwable e) {
        e.printStackTrace();
    }

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