Android 自用键盘操作

/**
 * 软键盘操作类
 * 功能描述：
 * 1、打开软键盘 showSoftInput(EditText,Activity) or showSoftInput(Activity);
 * 2、关闭软键盘 closeSoftInput(EditText,Activity) or closeSoftInput(Activity);
 * Created by tab on 2018/05/04 14:10
 */
public class KeyBoardUtils {

    /**
     * 打开软键盘
     *
     * @param mEditText 输入框
     * @param mContext  上下文
     */
    public static void showSoftInput(EditText mEditText, Context mContext) {
        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
     *
     * @param mEditText 输入框
     * @param mContext  上下文
     */
    public static void closeSoftInput(EditText mEditText, Context mContext) {
        InputMethodManager imm = (InputMethodManager) mContext
                .getSystemService(Context.INPUT_METHOD_SERVICE);

        imm.hideSoftInputFromWindow(mEditText.getWindowToken(), 0);
    }


    /**
     * 打开键盘.
     *
     * @param context the context
     */
    public static void showSoftInput(Context context) {
        InputMethodManager inputMethodManager = (InputMethodManager) context
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        inputMethodManager.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
    }

    /**
     * 关闭键盘事件.
     *
     * @param context the context
     */
    public static void closeSoftInput(Context context) {
        InputMethodManager inputMethodManager = (InputMethodManager) context
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        if (inputMethodManager != null && ((Activity) context).getCurrentFocus() != null) {
            inputMethodManager.hideSoftInputFromWindow(((Activity) context).getCurrentFocus()
                    .getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
        }
    }

    static int virtualKeyboardHeight;
    static int screenHeight;
    static int screenHeight6;
    static View rootView;

    /**
     * @param listener
     */
    public static void setOnKeyboardChangeListener(Activity mContext, final KeyboardChangeListener listener) {


        screenHeight = mContext.getResources().getDisplayMetrics().heightPixels;
        screenHeight6 = screenHeight / 6;
        rootView = mContext.getWindow().getDecorView();

        rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

            //当键盘弹出隐藏的时候会 调用此方法。
            @Override
            public void onGlobalLayout() {
                //回调该方法时rootView还未绘制，需要设置绘制完成监听
                rootView.post(new Runnable() {
                    @Override
                    public void run() {
                        Rect rect = new Rect();
                        //获取屏幕底部坐标
                        rootView.getWindowVisibleDisplayFrame(rect);
                        //获取键盘的高度
                        int heightDifference = screenHeight - rect.bottom;
                        if (heightDifference < screenHeight6) {
                            virtualKeyboardHeight = heightDifference;
                            if (listener != null) {
                                listener.onKeyboardHide();
                            }
                        } else {
                            if (listener != null) {
                                listener.onKeyboardShow(heightDifference - virtualKeyboardHeight);
                            }
                        }
                    }
                });
            }
        });
    }


    /**
     * 软键盘状态切换监听
     */
    public interface KeyboardChangeListener {
        /**
         * 键盘弹出
         *
         * @param keyboardHight 键盘高度
         */
        void onKeyboardShow(int keyboardHight);

        /**
         * 键盘隐藏
         */
        void onKeyboardHide();
    }

}