Android - UI Helper

import android.content.Context;
import android.os.Handler;
import android.view.View;
import android.view.inputmethod.InputMethodManager;

/**
 * Created by 大灯泡 on 2016/2/9.
 * ui工具类
 */
public class UIHelper {
    /**
     * dip转px
     */
    public static int dipToPx(Context context, float dip) {
        return (int) (dip * context.getResources().getDisplayMetrics().density + 0.5f);
    }

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

    /**
     * 将sp值转换为px值
     */
    public static int sp2px(Context context, float spValue) {
        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (spValue * fontScale + 0.5f);
    }

    /**
     * 获取屏幕分辨率：宽
     */
    public static int getScreenPixWidth(Context context) {
        return context.getResources().getDisplayMetrics().widthPixels;
    }

    /**
     * 获取屏幕分辨率：高
     */
    public static int getScreenPixHeight(Context context) {
        return context.getResources().getDisplayMetrics().heightPixels;
    }

    /**
     * 获取状态栏的高度
     */
    public static int getStatusHeight(Context context) {
        int result = 0;
        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen",
                "android");
        if (resourceId > 0) {
            result = context.getResources().getDimensionPixelSize(resourceId);
        }
        return result;
    }

    /**
     * 隐藏软键盘
     */
    public static void hideInputMethod(View view) {
        InputMethodManager imm = (InputMethodManager) view.getContext()
                                                          .getSystemService(Context.INPUT_METHOD_SERVICE);
        if (imm != null) {
            imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
        }
    }

    public static void hideInputMethod(final View view, long delayMillis) {
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                hideInputMethod(view);
            }
        }, delayMillis);
    }

    /**
     * 显示软键盘
     */
    public static void showInputMethod(View view) {
        InputMethodManager imm = (InputMethodManager) view.getContext()
                                                          .getSystemService(Context.INPUT_METHOD_SERVICE);
        if (imm != null) {
            imm.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
        }
    }

    /**
     * 显示软键盘
     */
    public static void showInputMethod(Context context) {
        InputMethodManager imm = (InputMethodManager) context
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
    }

    /**
     * 多少时间后显示软键盘
     */
    public static void showInputMethod(final View view, long delayMillis) {
        // 显示输入法
        new Handler().postDelayed(new Runnable() {

            @Override
            public void run() {
                UIHelper.showInputMethod(view);
            }
        }, delayMillis);
    }
}