Android关于软键盘的相关

关闭软键盘

View view = getWindow().peekDecorView();
if (view != null) {
    InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    inputManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
        }```

##打开软键盘

if (view != null) {
InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.showSoftInput(view, 0);
}```
view必须是VISIBLE的EditText，如果不是VISIBLE的，需要先将其设置为VISIBLE。
http://blog.csdn.net/ccpat/article/details/46717573

参数	0	SHOW_IMPLICIT	SHOW_FORCED
0	T	T	T
HIDE_IMPLICIT_ONLY	F	T	F
HIDE_NOT_ALWAYS	T	T	F

检查软键盘是否显示

   /**
     * 判断软键盘是否显示
     *
     * @param rootView 根View
     * @return
     */
    protected 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;
    }```
##软键盘弹起和收起监听

    final int MIN_KEYBOARD_HEIGHT_PX = 150;
    final View decorView = getWindow().getDecorView();

    decorView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        private final Rect windowVisibleDisplayFrame = new Rect();
        private int lastVisibleDecorViewHeight;

        @Override
        public void onGlobalLayout() {
            // Retrieve visible rectangle inside window.
            decorView.getWindowVisibleDisplayFrame(windowVisibleDisplayFrame);
            final int visibleDecorViewHeight = windowVisibleDisplayFrame.height();

            // Decide whether keyboard is visible from changing decor view height.
            if (lastVisibleDecorViewHeight != 0) {
                if (lastVisibleDecorViewHeight > visibleDecorViewHeight + MIN_KEYBOARD_HEIGHT_PX) {
                    // Calculate current keyboard height (this includes also navigation bar height when in fullscreen mode).
                    int currentKeyboardHeight = decorView.getHeight() - windowVisibleDisplayFrame.bottom;
                    // Notify listener about keyboard being shown.
                    llBottom.setVisibility(View.GONE);
                } else if (lastVisibleDecorViewHeight + MIN_KEYBOARD_HEIGHT_PX < visibleDecorViewHeight) {
                    // Notify listener about keyboard being hidden.
                    llBottom.setVisibility(View.VISIBLE);
                }
            }
            // Save current decor view height for the next call.
            lastVisibleDecorViewHeight = visibleDecorViewHeight;
        }
    });```