Toast的用法与封装

Toast toast = Toast.makeText(this, "Message", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();

参数3是显示时间的长短，通过setGravity方法可以设置信息显示的位置。

package com.mazingtec.dealtool;

/**
 * Created by wei on 2017/5/27.
 */

import android.content.Context;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Created by 赵晨璞 on 2016/8/11.
 */
public class ToastUtil {

    private Toast toast;
    private LinearLayout toastView;

    /**
     * 修改原布局的Toast
     */
    public ToastUtil()
    {

    }

    /**
     * 完全自定义布局Toast
     * @param context
     * @param view
     */
    public ToastUtil(Context context, View view,int duration)
    {
        toast=new Toast(context);
        toast.setView(view);
        toast.setDuration(duration);
    }

    /**
     * 向Toast中添加自定义view
     * @param view
     * @param postion
     * @return
     */
    public  ToastUtil addView(View view,int postion)
    {
        toastView = (LinearLayout) toast.getView();
        toastView.addView(view, postion);

        return this;
    }

    /**
     * 设置Toast字体及背景颜色
     * @param messageColor
     * @param backgroundColor
     * @return
     */
    public ToastUtil setToastColor(int messageColor, int backgroundColor)
    {
        View view = toast.getView();
        if(view!=null){
            TextView message=((TextView) view.findViewById(android.R.id.message));
            message.setBackgroundColor(backgroundColor);
            message.setTextColor(messageColor);
        }
        return this;
    }

    /**
     * 设置Toast字体及背景
     * @param messageColor
     * @param background
     * @return
     */
    public ToastUtil setToastBackground(int messageColor, int background)
    {
        View view = toast.getView();
        if(view!=null){
            TextView message=((TextView) view.findViewById(android.R.id.message));
            message.setBackgroundResource(background);
            message.setTextColor(messageColor);
        }
        return this;
    }

    /**
     * 短时间显示Toast
     */
    public  ToastUtil Short(Context context, CharSequence message)
    {
        if(toast==null||(toastView!=null&&toastView.getChildCount()>1)){
            toast= Toast.makeText(context, message, Toast.LENGTH_SHORT);
            toastView=null;
        }else{
            toast.setText(message);
            toast.setDuration(Toast.LENGTH_SHORT);
        }
        return this;
    }

    /**
     * 短时间显示Toast
     */
    public ToastUtil Short(Context context, int message)
    {
        if(toast==null||(toastView!=null&&toastView.getChildCount()>1)){
            toast= Toast.makeText(context, message, Toast.LENGTH_SHORT);
            toastView=null;
        }else{
            toast.setText(message);
            toast.setDuration(Toast.LENGTH_SHORT);
        }
        return this;
    }

    /**
     * 长时间显示Toast
     */
    public ToastUtil Long(Context context, CharSequence message)
    {
        if(toast==null||(toastView!=null&&toastView.getChildCount()>1)){
            toast= Toast.makeText(context, message, Toast.LENGTH_LONG);
            toastView=null;
        }else{
            toast.setText(message);
            toast.setDuration(Toast.LENGTH_LONG);
        }
        return this;
    }

    /**
     * 长时间显示Toast
     *
     * @param context
     * @param message
     */
    public ToastUtil Long(Context context, int message)
    {
        if(toast==null||(toastView!=null&&toastView.getChildCount()>1)){
            toast= Toast.makeText(context, message, Toast.LENGTH_LONG);
            toastView=null;
        }else{
            toast.setText(message);
            toast.setDuration(Toast.LENGTH_LONG);
        }
        return this;
    }

    /**
     * 自定义显示Toast时间
     *
     * @param context
     * @param message
     * @param duration
     */
    public ToastUtil Indefinite(Context context, CharSequence message, int duration)
    {
        if(toast==null||(toastView!=null&&toastView.getChildCount()>1)){
            toast= Toast.makeText(context, message,duration);
            toastView=null;
        }else{
            toast.setText(message);
            toast.setDuration(duration);
        }
        return this;
    }

    /**
     * 自定义显示Toast时间
     *
     * @param context
     * @param message
     * @param duration
     */
    public ToastUtil Indefinite(Context context, int message, int duration)
    {
        if(toast==null||(toastView!=null&&toastView.getChildCount()>1)){
            toast= Toast.makeText(context, message,duration);
            toastView=null;
        }else{
            toast.setText(message);
            toast.setDuration(duration);
        }
        return this;
    }

    /**
     * 显示Toast
     * @return
     */
    public ToastUtil show ()
    {
        toast.show();

        return this;
    }

    /**
     * 获取Toast
     * @return
     */
    public Toast getToast()
    {
        return toast;
    }
}