Toast是一种不影响用户操作的通知，出现一定时间自动消失。一般用户通知用户已经刷新内容。

原始类：

package com.xinbo.templete;

import android.os.Bundle;

import android.app.Activity;

import android.content.Context;

import android.view.Gravity;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.View;

import android.widget.TextView;

import android.widget.Toast;

public class SecondActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_second);

}

//一个按钮事件，需要在xml里拉个按钮

public void TOAST(View v) {

Toast result = new Toast(this);

                //.用以判断当连续多次toast，原先未及时toast的会被取消而马上toast下一个。////最后不要忘记result.show().

if(result!=null){

result.cancel();

}

LayoutInflater inflate = (LayoutInflater) this

.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

//R.layout.custom_toast,是自定义的布局，这个布局的个性设置由我们决定，设置颜色、背景、文字字体等等

View v2 = inflate.inflate(R.layout.custom_toast, null);

TextView tv = (TextView) v2.findViewById(R.id.textView111);

tv.setText("toast....");

result.setGravity(Gravity.TOP, 20, 50);

// result.setGravity(gravity, xOffset, yOffset)

result.setView(v2);

result.setDuration(Toast.LENGTH_SHORT);

result.show();

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.second, menu);

return true;

}

}

//custom_toast的xml文件

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:padding="12dp"

    android:layout_height="wrap_content"

    android:background="@drawable/abs_bg" >

    <TextView

        android:id="@+id/textView111"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:text="Medium Text"

        android:textColor="#FFFFFF"

        android:textAppearance="?android:attr/textAppearanceMedium" />

</RelativeLayout>

当然也可以经过封装，只要在需要的时候调用、传参数（上下文，显示的内容、显示时间）即可

封装类：

package com.xinbo.lib_yuchen;

import android.content.Context;

import android.view.Gravity;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.TextView;

import android.widget.Toast;

public final class ToastUtils {

private static Toast result;

public static void showToast(Context context, String msg, int duration)

{

if (result != null)

{

result.cancel();

}

result = new Toast(context);

LayoutInflater inflate = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

View v = inflate.inflate(R.layout.custom_toast, null);

TextView tv = (TextView) v.findViewById(R.id.textView1);

tv.setText(msg);

result.setView(v);

result.setGravity(Gravity.TOP, 20, 20);

result.setDuration(Toast.LENGTH_SHORT);

result.show();

}

private ToastUtils(){}

}

测试类：关键的一句： ToastUtils.showToast(this, "定制Toast", Toast.LENGTH_SHORT);

package com.xinbo.templete;

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.view.View;

import android.widget.Toast;

import com.xinbo.lib_yuchen.ToastUtils;

public class MainActivity extends Activity {

public void btnToast(View v1) {

ToastUtils.showToast(this, "定制Toast", Toast.LENGTH_SHORT);

}

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

}