DensityUtil.java

/*
 *  Copyright(c) 2017 lizhaotailang
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.github.marktony.espresso.util;

import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Point;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.Display;
import android.view.WindowManager;

import java.lang.reflect.InvocationTargetException;

/**
 * Created by lizhaotailang on 2017/3/24.
 */

public class DensityUtil {

    public static int getScreenHeight(Context context) {
        DisplayMetrics displayMetrics = new DisplayMetrics();
        ((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
        return displayMetrics.heightPixels;
    }

    public static int getScreenWidth(Context context) {
        DisplayMetrics displayMetrics = new DisplayMetrics();
        ((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
        return displayMetrics.widthPixels;
    }

    public static int getScreenHeightWithDecorations(Context context) {
        int heightPixes;
        WindowManager windowManager = ((Activity) context).getWindowManager();
        Display display = windowManager.getDefaultDisplay();
        Point realSize = new Point();
        try {
            Display.class.getMethod("getRealSize", Point.class).invoke(display, realSize);
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        heightPixes = realSize.y;
        return heightPixes;
    }

    public static int dip2px(Context context, float dpVale) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpVale * scale + 0.5f);
    }

    public static int getStatusBarHeight(Context context) {
        Resources resources = context.getResources();
        int resourcesId = resources.getIdentifier("status_bar_height", "dimen", "android");
        int height = resources.getDimensionPixelSize(resourcesId);
        return height;
    }

    /**
     * Converts sp to px
     *
     * @param context Context
     * @param sp  the value in sp
     * @return int
     */
    public static int dip2sp(Context context, float sp) {
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, context.getResources().getDisplayMetrics());
    }

    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

}