ViewUtils.java

package ren.solid.library.utils;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.DisplayMetrics;
import android.util.TypedValue;

import ren.solid.library.fragment.base.BaseFragment;

/**
 * Created by _SOLID
 * Date:2016/3/30
 * Time:19:37
 */
public class ViewUtils {

    /**
     * 根据Class创建Fragment
     *
     * @param clazz the Fragment of create
     * @return
     */
    public static BaseFragment createFragment(Class<?> clazz) {
        BaseFragment resultFragment = null;
        String className = clazz.getName();
        try {
            try {
                resultFragment = (BaseFragment) Class.forName(className).newInstance();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }

        return resultFragment;
    }

    public static DisplayMetrics getDisplayMetrics(Context context) {
        return context.getResources().getDisplayMetrics();
    }

    /**
     * 获取屏幕的宽度
     *
     * @param context context
     * @return
     */
    public static int getScreenWidth(Context context) {
        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
        return displayMetrics.widthPixels;
    }

    /**
     * 获取屏幕的高度
     *
     * @param context context
     * @return
     */
    public static int getScreenHeight(Context context) {
        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
        return displayMetrics.heightPixels;
    }

    //转换dp为px
    public static int dp2px(Context context, int dip) {
        float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dip * scale + 0.5f * (dip >= 0 ? 1 : -1));
    }

    //转换px为dp
    public static int px2dp(Context context, int px) {
        float scale = context.getResources().getDisplayMetrics().density;
        return (int) (px / scale + 0.5f * (px >= 0 ? 1 : -1));
    }

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

    //转换px为sp
    public static int px2sp(Context context, float pxValue) {
        float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (pxValue / fontScale + 0.5f);
    }

    public static int getThemeColorPrimary(Context ctx) {
        TypedValue typedValue = new TypedValue();
        ctx.getTheme().resolveAttribute(android.R.attr.theme, typedValue, true);
        int[] attribute = new int[]{android.R.attr.colorPrimary};
        TypedArray array = ctx.obtainStyledAttributes(typedValue.resourceId, attribute);
        int color = array.getColor(0, -1);
        array.recycle();
        return color;
    }

    public static int getThemeColorPrimaryDark(Context ctx) {
        TypedValue typedValue = new TypedValue();
        ctx.getTheme().resolveAttribute(android.R.attr.theme, typedValue, true);
        int[] attribute = new int[]{android.R.attr.colorPrimaryDark};
        TypedArray array = ctx.obtainStyledAttributes(typedValue.resourceId, attribute);
        int color = array.getColor(0, -1);
        array.recycle();
        return color;
    }

    public static int getThemeColorAccent(Context ctx) {
        TypedValue typedValue = new TypedValue();
        ctx.getTheme().resolveAttribute(android.R.attr.theme, typedValue, true);
        int[] attribute = new int[]{android.R.attr.colorAccent};
        TypedArray array = ctx.obtainStyledAttributes(typedValue.resourceId, attribute);
        int color = array.getColor(0, -1);
        array.recycle();
        return color;
    }
}