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Android Toast通知用法实例详解

2019年07月24日  | 移动技术网IT编程  | 我要评论

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本文实例讲述了android toast通知用法。分享给大家供大家参考，具体如下：

toast在手机屏幕上向用户显示一条信息，一段时间后信息会自动消失。

1.默认用法

复制代码 代码如下:
toast.maketext(getapplicationcontext(), "默认toast样式",toast.length_short).show();

2.fragment中的用法

复制代码 代码如下:
toast.maketext(getactivity(),"网络连接错误，请检察网络设置", toast.length_long).show();

3.自定义显示位置效果

toast = toast.maketext(getapplicationcontext(), "自定义位置toast", toast.length_long);
toast.setgravity(gravity.center, 0, 0);
toast.show();

4.带图片效果

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();

5.完全自定义效果

layoutinflater inflater = getlayoutinflater();
view layout = inflater.inflate(r.layout.custom,(viewgroup) findviewbyid(r.id.lltoast));
imageview image = (imageview) layout.findviewbyid(r.id.tvimagetoast);
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 = new toast(getapplicationcontext());
toast.setgravity(gravity.right | gravity.top, 12, 40);
toast.setduration(toast.length_long);
toast.setview(layout);
toast.show();

6.其他线程

main.java代码：

package com.wjq.toast;
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.viewgroup;
import android.view.view.onclicklistener;
import android.widget.imageview;
import android.widget.linearlayout;
import android.widget.textview;
import android.widget.toast;
public class main extends activity implements onclicklistener {
  handler handler = new handler();
  @override
  public void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.main);
    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:
      toast.maketext(getapplicationcontext(), "默认toast样式",toast.length_short).show();
      break;
    case r.id.btnsimpletoastwithcustomposition:
      toast = toast.maketext(getapplicationcontext(), "自定义位置toast",toast.length_long);
      toast.setgravity(gravity.center, 0, 0);
      toast.show();
      break;
    case r.id.btnsimpletoastwithimage:
      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:
      layoutinflater inflater = getlayoutinflater();
      view layout = inflater.inflate(r.layout.custom,(viewgroup) findviewbyid(r.id.lltoast));
      imageview image = (imageview) layout.findviewbyid(r.id.tvimagetoast);
      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 = new toast(getapplicationcontext());
      toast.setgravity(gravity.right | gravity.top, 12, 40);
      toast.setduration(toast.length_long);
      toast.setview(layout);
      toast.show();
      break;
    case r.id.btnruntoastfromotherthread:
      new thread(new runnable() {
        public void run() {
          showtoast();
        }
      }).start();
      break;
    }
  }
}

main.xml代码：

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:gravity="center"
  android:orientation="vertical"
  android:padding="5dip" >
  <button
    android:id="@+id/btnsimpletoast"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="默认" >
  </button>
  <button
    android:id="@+id/btnsimpletoastwithcustomposition"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="自定义显示位置" >
  </button>
  <button
    android:id="@+id/btnsimpletoastwithimage"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="带图片" >
  </button>
  <button
    android:id="@+id/btncustomtoast"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="完全自定义" >
  </button>
  <button
    android:id="@+id/btnruntoastfromotherthread"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="其他线程" >
  </button>
</linearlayout>

custom.xml：

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/lltoast"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:background="#ffffffff"
  android:orientation="vertical" >
  <textview
    android:id="@+id/tvtitletoast"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_margin="1dip"
    android:background="#bb000000"
    android:gravity="center"
    android:textcolor="#ffffffff" />
  <linearlayout
    android:id="@+id/lltoastcontent"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginbottom="1dip"
    android:layout_marginleft="1dip"
    android:layout_marginright="1dip"
    android:background="#44000000"
    android:orientation="vertical"
    android:padding="15dip" >
    <imageview
      android:id="@+id/tvimagetoast"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="center" />
    <textview
      android:id="@+id/tvtexttoast"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:gravity="center"
      android:paddingleft="10dip"
      android:paddingright="10dip"
      android:textcolor="#ff000000" />
  </linearlayout>
</linearlayout>

更多关于android相关内容感兴趣的读者可查看本站专题：《android编程之activity操作技巧总结》、《android资源操作技巧汇总》、《android文件操作技巧汇总》、《android操作sqlite数据库技巧总结》、《android操作json格式数据技巧总结》、《android数据库操作技巧总结》、《android编程开发之sd卡操作方法汇总》、《android开发入门与进阶教程》、《android视图view技巧总结》及《android控件用法总结》

希望本文所述对大家android程序设计有所帮助。

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