Toast英文名为土司，在Android里面这个类是用来弹出提示信息的，我想sdk作者是认为提示信息片长得就像一块土司吧。这个理论就不多说什么了，开始我们的实践。
第一步、设计页面
主页面toastview.xml
<?xml version="1.0"encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button android:layout_height="wrap_content"android:text="默认" android:id="@+id/btnSimpleToast"android:layout_width="fill_parent" android:layout_alignParentTop="true"android:layout_alignParentLeft="true"></Button>
<Button android:layout_height="wrap_content"android:text="自定义显示位置" android:id="@+id/btnSimpleToastWithCustomPosition"android:layout_width="fill_parent"
android:layout_below="@+id/btnSimpleToast" android:layout_alignParentLeft="true"android:layout_marginTop="21dp"></Button>
<Button android:layout_height="wrap_content"android:text="带图片" android:id="@+id/btnSimpleToastWithImage"android:layout_width="fill_parent"
android:layout_below="@+id/btnSimpleToastWithCustomPosition"android:layout_alignParentLeft="true"android:layout_marginTop="20dp"></Button>
<Button android:layout_height="wrap_content"android:text="其他线程" android:id="@+id/btnRunToastFromOtherThread"android:layout_width="fill_parent"
android:layout_below="@+id/btnCustomToast" android:layout_alignParentLeft="true"android:layout_marginTop="26dp"></Button>
<Button android:layout_height="wrap_content"android:text="完全自定义" android:id="@+id/btnCustomToast"android:layout_width="fill_parent"
android:layout_below="@+id/btnSimpleToastWithImage" android:layout_alignParentLeft="true"android:layout_marginTop="19dp"></Button>
</RelativeLayout>
自定义toast页面customtoast.xml
<?xml version="1.0"encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content" android:layout_width="wrap_content"
android:background="#ffffffff" android:orientation="vertical"
android:id="@+id/llToast" >
<TextView android:layout_height="wrap_content"
android:layout_margin="1dip" android:textColor="#ffffffff"
android:layout_width="fill_parent" android:gravity="center"
android:background="#bb000000" android:id="@+id/tvTitleToast"/>
<LinearLayout android:layout_height="wrap_content"
android:orientation="vertical" android:id="@+id/llToastContent"
android:layout_marginLeft="1dip" android:layout_marginRight="1dip"
android:layout_marginBottom="1dip" android:layout_width="wrap_content"
android:padding="15dip" android:background="#44000000">
<ImageView android:layout_height="wrap_content"
android:layout_gravity="center" android:layout_width="wrap_content"
android:id="@+id/imgToast" />
<TextView android:layout_height="wrap_content"
android:paddingRight="10dip" android:paddingLeft="10dip"
android:layout_width="wrap_content" android:gravity="center"
android:textColor="#ff000000" android:id="@+id/tvTextToast"/>
</LinearLayout>
</LinearLayout>
第二步、设计Acttivity ToastActivity.java
/**
*
*/
package com.figo.helloworld;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
/**
* @author Administrator
*
*/
public class ToastActivity extends Activity implementsOnClickListener {
Handler handler = new Handler();//帮助主线程和子线程进行通信
@Override
public void onCreate(BundlesavedInstanceState) {
super.onCreate(savedInstanceState);
//找到页面
setContentView(R.layout.toastview);
//添加按钮事件
findViewById(R.id.btnSimpleToast).setOnClickListener(this);
findViewById(R.id.btnSimpleToastWithCustomPosition).setOnClickListener(
this);
findViewById(R.id.btnSimpleToastWithImage).setOnClickListener(this);
findViewById(R.id.btnCustomToast).setOnClickListener(this);
findViewById(R.id.btnRunToastFromOtherThread).setOnClickListener(this);
}
public void showToast() {
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(),"我来自其他线程！",
Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onClick(View v) {
Toast toast = null;
switch (v.getId()) {
case R.id.btnSimpleToast://简单toast
Toast.makeText(getApplicationContext(),"默认Toast样式",
Toast.LENGTH_SHORT).show();
break;
caseR.id.btnSimpleToastWithCustomPosition://自定义位置的toast
toast =Toast.makeText(getApplicationContext(), "自定义位置Toast",
Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER,0, 0);
toast.show();
break;
caseR.id.btnSimpleToastWithImage://带图片的toast
toast =Toast.makeText(getApplicationContext(), "带图片的Toast",
Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER,0, 0);
LinearLayout toastView =(LinearLayout) toast.getView();
ImageView imageCodeProject= new ImageView(getApplicationContext());
imageCodeProject.setImageResource(R.drawable.icon);
toastView.addView(imageCodeProject,0);
toast.show();
break;
case R.id.btnCustomToast://自定义toast
LayoutInflaterinflater = getLayoutInflater();
View layout =inflater.inflate(R.layout.customtoast,
(ViewGroup)findViewById(R.id.llToast));
ImageView image =(ImageView) layout
.findViewById(R.id.imgToast);
image.setImageResource(R.drawable.icon);
TextView title = (TextView)layout.findViewById(R.id.tvTitleToast);
title.setText("Attention");
TextView text = (TextView)layout.findViewById(R.id.tvTextToast);
text.setText("完全自定义Toast");
toast = newToast(getApplicationContext());
toast.setGravity(Gravity.RIGHT| Gravity.TOP, 100, 60);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
break;
caseR.id.btnRunToastFromOtherThread://其他线程执行完后在主线程显示toast
new Thread(new Runnable() {
public void run() {
showToast();
}
}).start();
break;
}
}
}
第三步、AndroidManifest.xml注册Activity
<activity android:name=".ToastActivity" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
第四步、运行效果
原文地址：http://blog.csdn.net/figo0423/article/details/39505501
