本文实例讲述了android中market的loading效果实现方法。分享给大家供大家参考。具体如下：
在android中,要实现loading效果，一般情况下都使用progressdialog控件。apidemos/src/com/example/android/apis/view/progressbar3.java 提供两个demo:
仔细看了android market，发现却是不一样的，请看截图:
那到底如何实现呢？首先，我们创建一个布局文件,
res/layout/fullscreen_loading_indicator.xml, 其内容如下:
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<?xml version="1.0" encoding="utf-8"?><linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:gravity="center_vertical|center_horizontal" android:orientation="horizontal" android:id="@+id/fullscreen_loading_style" android:layout_width="fill_parent" android:layout_height="fill_parent" > <progressbar android:layout_gravity="center_vertical"android:layout_width="wrap_content"android:layout_height="wrap_content"style="?android:attr/progressbarstylesmall"/><textview android:id="@+id/current_action" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="5.0dip" android:text="@+string/loading"/></linearlayout> |
然后在main.xml 把它include 进来
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<?xml version="1.0" encoding="utf-8"?><linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <linearlayout android:orientation="vertical" android:id="@+id/main_info" android:visibility="gone" android:layout_width="fill_parent" android:layout_height="fill_parent"> <textview android:layout_width="fill_parent" android:layout_height="fill_parent" android:text="abc"></textview> </linearlayout> <linearlayout android:orientation="vertical" android:id="@+id/main_loading" android:layout_width="fill_parent" android:layout_height="fill_parent"> <include android:visibility="visible" android:layout_width="fill_parent" android:layout_height="fill_parent" layout="@layout/fullscreen_loading_style" /> </linearlayout></linearlayout> |
主程序：
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package com.tymx.fullloading;import android.app.activity;import android.os.bundle;import android.os.handler;import android.os.message;import android.view.view;import android.widget.linearlayout;public class myfullloading extends activity { /** called when the activity is first created. */ private linearlayout mloadinglayout; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.main); final handler handler = new handler(){ @override public void handlemessage(message msg) { // todo auto-generated method stub super.handlemessage(msg); if (msg.what==1){ mloadinglayout = (linearlayout)findviewbyid(r.id.fullscreen_loading_style); mloadinglayout.setvisibility(view.gone); linearlayout mmain = (linearlayout)findviewbyid(r.id.main_info); mmain.setvisibility(view.visible); } } }; new thread(){ public void run(){ for (int i=0;i<1000;i++){ system.out.print(i+""); } message msg = handler.obtainmessage(1,"flash"); handler.sendmessage(msg); } }.start(); }} |
运行的效果为:
希望本文所述对大家的android程序设计有所帮助。
