Android获取软键盘的高度键盘的打开与关闭监听键盘处于打开还是关闭状态

最近在项目中，需要获取到软键盘的高度，再将底部的布局上移键盘的高度，话不多说，直接上代码：

获取软键盘高度

    // 一个静态变量存储高度
    public static int keyboardHeight = 0;
    boolean isVisiableForLast = false;
    ViewTreeObserver.OnGlobalLayoutListener onGlobalLayoutListener = null;

    public void addOnSoftKeyBoardVisibleListener() {if (keyboardHeight > 0) {return;}
        final View decorView = getWindow().getDecorView();
        onGlobalLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {Rect rect = new Rect();
                decorView.getWindowVisibleDisplayFrame(rect);
                // 计算出可见屏幕的高度
                int displayHight = rect.bottom - rect.top;
                // 获得屏幕整体的高度
                int hight = decorView.getHeight();
                boolean visible = (double) displayHight / hight < 0.8;
                int statusBarHeight = 0;
                try {Class<?> c = Class.forName("com.android.internal.R$dimen");
                    Object obj = c.newInstance();
                    Field field = c.getField("status_bar_height");
                    int x = Integer.parseInt(field.get(obj).toString());
                    statusBarHeight = getApplicationContext().getResources().getDimensionPixelSize(x);
                } catch (Exception e) {e.printStackTrace();
                }

                if (visible && visible != isVisiableForLast) {
                    // 获得键盘高度
                    keyboardHeight = hight - displayHight - statusBarHeight;
                    Log.i("keyboardHeight==1213==", "" + keyboardHeight);

                }
                isVisiableForLast = visible;
            }
        };
        decorView.getViewTreeObserver().addOnGlobalLayoutListener(onGlobalLayoutListener);
    }

键盘的打开与关闭操作：

public class KeybordS {

    /**
     * 打开软键盘
     */
    public static void openKeybord(EditText mEditText, Context mContext) {mEditText.setFocusable(true);
        mEditText.setFocusableInTouchMode(true);
        mEditText.requestFocus();

        InputMethodManager imm = (InputMethodManager) mContext
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(mEditText, InputMethodManager.RESULT_SHOWN);
        imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,
                InputMethodManager.HIDE_IMPLICIT_ONLY);
    }

    /**
     * 关闭软键盘
     */
    public static void closeKeybord(EditText mEditText, Context mContext) {InputMethodManager imm = (InputMethodManager) mContext
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(mEditText.getWindowToken(), 0);
    }

     /**
     * 关闭软键盘
     */
     public static void hideInput(Activity activity) {if (activity.getCurrentFocus() != null) {InputMethodManager inputManager = (InputMethodManager) activity.getSystemService(INPUT_METHOD_SERVICE);
            inputManager.hideSoftInputFromWindow(activity.getCurrentFocus().getWindowToken(), 0);
        }
    }

    /**
     * 判断当前软键盘是否打开
     */
    public static boolean isSoftInputShow(Activity activity) {

        // 虚拟键盘隐藏 判断 view 是否为空
        View view = activity.getWindow().peekDecorView();
        if (view != null) {
            // 隐藏虚拟键盘
            InputMethodManager inputmanger = (InputMethodManager) activity
                    .getSystemService(Activity.INPUT_METHOD_SERVICE);
//       inputmanger.hideSoftInputFromWindow(view.getWindowToken(),0);

            return inputmanger.isActive() && activity.getWindow().getCurrentFocus() != null;}
        return false;
    }

}

监听键盘处于打开还是关闭状态：

private void setListenerToRootView() {final View rootView = getWindow().getDecorView().findViewById(android.R.id.content);
    rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {boolean mKeyboardUp = isKeyboardShown(rootView);
            if (mKeyboardUp) {
                // 键盘弹出
                //Toast.makeText(getApplicationContext(), "键盘弹出", Toast.LENGTH_SHORT).show();} else {
                // 键盘收起
                //Toast.makeText(getApplicationContext(), "键盘收起", Toast.LENGTH_SHORT).show();}
        }
    });
}


private boolean isKeyboardShown(View rootView) {
    final int softKeyboardHeight = 100;
    Rect r = new Rect();
    rootView.getWindowVisibleDisplayFrame(r);
    DisplayMetrics dm = rootView.getResources().getDisplayMetrics();
    int heightDiff = rootView.getBottom() - r.bottom;
    return heightDiff > softKeyboardHeight * dm.density;
}

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