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:
<"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" /> <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
<"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：
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。
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