package com.example.administrator.ximengjianyu.utils;

import android.content.Context;
import android.util.DisplayMetrics;
import android.view.Display;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;

import java.lang.reflect.Method;

/**
 * Created by xukai on 2017/2/13.
 * 关于输入的一些工具类
 */
public class InputUtils {

    /**
     * 该方法隐藏软键盘
     */
    public void guideSoftInput(Context context) {
            InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
    }

    /**
     * 该方法设置软键盘可见
     */
    public void showSoftInput(Context context) {
        InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.toggleSoftInput(0, InputMethodManager.SHOW_FORCED);
    }

    public int getDpi(Context context) {
        int dpi = 0;
        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = windowManager.getDefaultDisplay();
        DisplayMetrics displayMetrics = new DisplayMetrics();
        @SuppressWarnings("rawtypes")
        Class c;
        try {
            c = Class.forName("android.view.Display");
            @SuppressWarnings("unchecked")
            Method method = c.getMethod("getRealMetrics", DisplayMetrics.class);
            method.invoke(display, displayMetrics);
            dpi = displayMetrics.heightPixels;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return dpi;
    }

    /**
     * 获取 虚拟按键的高度
     * @param context
     * @return
     */
    public int getBottomStatusHeight(Context context) {
        int totalHeight = getDpi(context);

        int contentHeight = getScreenHeight(context);

        return totalHeight - contentHeight;
    }

    /**
     * 获得屏幕高度
     *
     * @param context
     * @return
     */
    public int getScreenHeight(Context context) {
        WindowManager wm = (WindowManager) context
                .getSystemService(Context.WINDOW_SERVICE);
        DisplayMetrics outMetrics = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(outMetrics);
        return outMetrics.heightPixels;
    }
}