BaseTools.java

package com.example.jingbin.cloudreader.utils;

import android.app.ActivityManager;
import android.content.ClipboardManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.text.TextUtils;
import android.util.DisplayMetrics;
import android.view.WindowManager;
import android.widget.TextView;

import com.example.jingbin.cloudreader.app.CloudReaderApplication;

import java.lang.reflect.Field;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.List;
import java.util.Locale;

/**
 * Created by jingbin on 2017/2/13.
 */

public class BaseTools {

    //获取图片所在文件夹名称
    public static String getDir(String path) {
        String subString = path.substring(0, path.lastIndexOf('/'));
        return subString.substring(subString.lastIndexOf('/') + 1, subString.length());
    }

    public static int getWindowWidth(Context context) {
        // 获取屏幕分辨率
        WindowManager wm = (WindowManager) (context
                .getSystemService(Context.WINDOW_SERVICE));
        DisplayMetrics dm = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(dm);
        int mScreenWidth = dm.widthPixels;
        return mScreenWidth;
    }

    public static int getWindowHeigh(Context context) {
        // 获取屏幕分辨率
        WindowManager wm = (WindowManager) (context
                .getSystemService(Context.WINDOW_SERVICE));
        DisplayMetrics dm = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(dm);
        int mScreenHeigh = dm.heightPixels;
        return mScreenHeigh;
    }

    //获得状态栏/通知栏的高度
    public static int getStatusBarHeight(Context context) {
        Class<?> c = null;
        Object obj = null;
        Field field = null;
        int x = 0, statusBarHeight = 0;
        try {
            c = Class.forName("com.android.internal.R$dimen");
            obj = c.newInstance();
            field = c.getField("status_bar_height");
            x = Integer.parseInt(field.get(obj).toString());
            statusBarHeight = context.getResources().getDimensionPixelSize(x);
        } catch (Exception e1) {
            e1.printStackTrace();
        }
        return statusBarHeight;
    }

    /**
     * 使用默认方式显示货币：
     * 例如:￥12,345.46 默认保留2位小数，四舍五入
     *
     * @param d double
     * @return String
     */
    public static String formatCurrency(double d) {
        String s = "";
        try {
            DecimalFormat nf = (DecimalFormat) NumberFormat.getCurrencyInstance(Locale.CHINA);
            s = nf.format(d);
        } catch (Exception e) {
            e.printStackTrace();
            return "" + d;
        }
        return s;
    }


    /**
     * 去掉无效小数点 ".00"
     */

    public static String formatMoney(double d) {
        String tmp = formatCurrency(d);

        if (tmp.endsWith(".00")) {
            return tmp.substring(0, tmp.length() - 3);
        } else {
            return tmp;
        }
    }


    /**
     * 处于栈顶的Activity名
     */
    public String getTopActivityName(Context context) {
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List var2 = am.getRunningTasks(1);
        return ((ActivityManager.RunningTaskInfo) var2.get(0)).topActivity.getClassName();
    }

    public static void setText(String text, TextView textView) {
        if (textView != null) {
            if (TextUtils.isEmpty(text)) {
                textView.setText("");
            } else {
                textView.setText(text);
            }
        }
    }

    /**
     * 获取当前应用的版本号
     */
    public static String getVersionName() {
        // 获取packagemanager的实例
        PackageManager packageManager = CloudReaderApplication.getInstance().getPackageManager();
        // getPackageName()是你当前类的包名，0代表是获取版本信息
        PackageInfo packInfo = null;
        try {
            packInfo = packageManager.getPackageInfo(CloudReaderApplication.getInstance().getPackageName(), 0);
            return packInfo.versionName;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
            return "1.0";
        }
    }

    /**
     * 实现文本复制功能
     *
     * @param content 复制的文本
     */
    public static void copy(String content) {
        // 得到剪贴板管理器
        ClipboardManager cmb = (ClipboardManager) CloudReaderApplication.getInstance().getSystemService(Context.CLIPBOARD_SERVICE);
        cmb.setText(content.trim());
    }

    /**
     * 使用浏览器打开链接
     */
    public static void openLink(Context context, String content) {
        Uri issuesUrl = Uri.parse(content);
        Intent intent = new Intent(Intent.ACTION_VIEW, issuesUrl);
        context.startActivity(intent);
    }
}