废话不多说，直接上代码：

package com.otn.android.toast;

import android.app.Activity;

import android.app.AlertDialog;

import android.os.Bundle;

import android.view.Gravity;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.TextView;

import android.widget.Toast;

public class MyToast extends Activity implements OnClickListener {

private static final String TOASTBTN_1 = "这是默认的Toast显示";

private static final String TOASTBTN_2 = "这是自定义位置的Toast显示";

private static final String TOASTBTN_3 = "这是带图片的Toast显示";

private static final String TOASTBTN_4 = "这是完全自定义的Toast显示";

private static final String TOASTBTN_5 = "这是长时间的Toast显示";

private Button toastBtn_1, toastBtn_2, toastBtn_3, toastBtn_4, toastBtn_5;

private Toast toast = null;

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

toastBtn_1 = (Button) findViewById(R.id.button_1);

toastBtn_2 = (Button) findViewById(R.id.button_2);

toastBtn_3 = (Button) findViewById(R.id.button_3);

toastBtn_4 = (Button) findViewById(R.id.button_4);

toastBtn_5 = (Button) findViewById(R.id.button_5);

toastBtn_1.setOnClickListener(this);

toastBtn_2.setOnClickListener(this);

toastBtn_3.setOnClickListener(this);

toastBtn_4.setOnClickListener(this);

toastBtn_5.setOnClickListener(this);

}

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

AlertDialog.Builder builder;

AlertDialog dialog;

switch (v.getId()) {

case R.id.button_1:

toast.makeText(this, TOASTBTN_1, Toast.LENGTH_LONG).show();

break;

case R.id.button_2:

toast = Toast.makeText(getApplicationContext(), TOASTBTN_2,

Toast.LENGTH_LONG);

toast.setGravity(Gravity.CENTER, 0, 0);

toast.show();

break;

case R.id.button_3:

toast = Toast.makeText(getApplicationContext(), TOASTBTN_3,

Toast.LENGTH_LONG);

toast.setGravity(Gravity.CENTER, 50, -100);

LinearLayout layout = (LinearLayout) toast.getView();

ImageView p_w_picpath = new ImageView(getApplicationContext());

p_w_picpath.setImageResource(R.drawable.wallpaper_tree_small);

layout.addView(p_w_picpath, 0);

toast.show();

break;

case R.id.button_4:

LayoutInflater inflater = getLayoutInflater();

View view = inflater.inflate(R.layout.userdefinedtoast,

(ViewGroup) findViewById(R.id.toast_layout));

TextView txtView_Title = (TextView) view

.findViewById(R.id.txt_Title);

TextView txtView_Context = (TextView) view

.findViewById(R.id.txt_context);

ImageView p_w_picpathView = (ImageView) view

.findViewById(R.id.p_w_picpath_toast);

toast = new Toast(getApplicationContext());

toast.setGravity(Gravity.CENTER, 0, 0);

toast.setDuration(Toast.LENGTH_LONG);

toast.setView(view);

toast.show();

break;

case R.id.button_5:

LayoutInflater inflater1 = getLayoutInflater();

View view1 = inflater1.inflate(R.layout.userdefinedtoast,

(ViewGroup) findViewById(R.id.toast_layout));

TextView txtView_Title1 = (TextView) view1

.findViewById(R.id.txt_Title);

TextView txtView_Context1 = (TextView) view1

.findViewById(R.id.txt_context);

ImageView p_w_picpathView1 = (ImageView) view1

.findViewById(R.id.p_w_picpath_toast);

builder = new AlertDialog.Builder(this);

builder.setView(view1);

dialog = builder.create();

dialog.show();

break;

default:

break;

}

}

}