Toast工具类

package com.wantup.selfsupport.utils;

import android.content.Context;
import android.view.Gravity;
import android.widget.Toast;

/**
 * Created by wantup on 2020/4/27
 */
public class ToastUtils {
    private static Toast toast;
    //实现不管我们触发多少次Toast调用，都只会持续一次Toast显示的时长
    /**
     * 短时间显示Toast【居下】
     *
     * @param msg 显示的内容-字符串
     */
    public static void showShortToast(Context context, String msg) {
        if (toast == null) {
            toast = Toast.makeText(context, msg, Toast.LENGTH_SHORT);
        } else {
            toast.setText(msg);
        }
        toast.show();
    }

    /**
     * 短时间显示Toast【居中】
     *
     * @param msg 显示的内容-字符串
     */
    public static void showShortToastCenter(Context context, String msg) {
        if (toast == null) {
            toast = Toast.makeText(context, msg, Toast.LENGTH_SHORT);
            toast.setGravity(Gravity.CENTER, 0, 0);
        } else {
            toast.setText(msg);
        }
        toast.show();

    }

    /**
     * 短时间显示Toast【居上】
     *
     * @param msg 显示的内容-字符串
     */
    public static void showShortToastTop(Context context, String msg) {
        if (toast == null) {
            toast = Toast.makeText(context, msg, Toast.LENGTH_SHORT);
            toast.setGravity(Gravity.TOP, 0, 0);
        } else {
            toast.setText(msg);
        }
        toast.show();

    }

    /**
     * 长时间显示Toast【居下】
     *
     * @param msg 显示的内容-字符串
     */
    public static void showLongToast(Context context, String msg) {
        if (toast == null) {
            toast = Toast.makeText(context, msg, Toast.LENGTH_LONG);
        } else {
            toast.setText(msg);
        }
        toast.show();
    }

    /**
     * 长时间显示Toast【居中】
     *
     * @param msg 显示的内容-字符串
     */
    public static void showLongToastCenter(Context context, String msg) {
        if (toast == null) {
            toast = Toast.makeText(context, msg, Toast.LENGTH_LONG);
            toast.setGravity(Gravity.CENTER, 0, 0);
        } else {
            toast.setText(msg);
        }
        toast.show();

    }

    /**
     * 长时间显示Toast【居上】
     *
     * @param msg 显示的内容-字符串
     */
    public static void showLongToastTop(Context context, String msg) {
        if (toast == null) {
            toast = Toast.makeText(context, msg, Toast.LENGTH_LONG);
            toast.setGravity(Gravity.TOP, 0, 0);
        } else {
            toast.setText(msg);
        }
        toast.show();
    }
}