Android Open Source - android-utils Display Utils

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License

The source code is released under:
Apache License
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Java Source Code

/**
 * Copyright 2014 Zhenguo Jin (jinzhenguo1990@gmail.com)
 */*w w  w .  ja  va  2  s . c om*/
 * 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 com.worthed.util;

import android.app.Activity;
import android.content.Context;
import android.util.DisplayMetrics;
import android.view.inputmethod.InputMethodManager;

/**
 * ?????????
 *
 * @author jingle1267@163.com
 */
public class DisplayUtils {

    /**
     * ??????????? dp ?????? ???? px(???)
     *
     * @param context ???
     * @param dpValue ??dip
     * @return ????
     */
    public static int dip2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }

    /**
     * ??????????? px(???) ?????? ???? dp
     *
     * @param context ???
     * @param pxValue ?????
     * @return DIP?
     */
    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    /**
     * ??????????? px(???) ?????? ???? sp
     *
     * @param context ???
     * @param pxValue ?????
     * @return SP?
     */
    public static int px2sp(Context context, float pxValue) {
        float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (pxValue / fontScale + 0.5f);
    }

    /**
     * ??????????? sp ?????? ???? px
     *
     * @param context ???
     * @param spValue SP?
     * @return ????
     */
    public static int sp2px(Context context, float spValue) {
        float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (spValue * fontScale + 0.5f);
    }

    /**
     * ????dialog??
     *
     * @param activity Activity
     * @return Dialog??
     */
    public static int getDialogW(Activity activity) {
        DisplayMetrics dm = new DisplayMetrics();
        dm = activity.getResources().getDisplayMetrics();
        int w = dm.widthPixels - 100;
        // int w = aty.getWindowManager().getDefaultDisplay().getWidth() - 100;
        return w;
    }

    /**
     * ?????????
     *
     * @param activity Activity
     * @return ?????
     */
    public static int getScreenW(Activity activity) {
        DisplayMetrics dm = new DisplayMetrics();
        dm = activity.getResources().getDisplayMetrics();
        int w = dm.widthPixels;
        // int w = aty.getWindowManager().getDefaultDisplay().getWidth();
        return w;
    }

    /**
     * ?????????
     *
     * @param activity Activity
     * @return ?????
     */
    public static int getScreenH(Activity activity) {
        DisplayMetrics dm = new DisplayMetrics();
        dm = activity.getResources().getDisplayMetrics();
        int h = dm.heightPixels;
        // int h = aty.getWindowManager().getDefaultDisplay().getHeight();
        return h;
    }

    /**
     * Toggle keyboard If the keyboard is visible,then hidden it,if it's
     * invisible,then show it
     *
     * @param context ???
     */
    public static void toggleKeyboard(Context context) {
        InputMethodManager imm = (InputMethodManager) context
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        if (imm.isActive()) {
            imm.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT,
                    InputMethodManager.HIDE_NOT_ALWAYS);
        }
    }

}
Java Source Code List
