是男人就下100层【第一层】——高仿微信界面（4）

上一篇《是男人就下100层【第一层】——高仿微信界面（3）》中我们完成了登录，这一篇看完成登录后的一个短暂加载和引导界面。

加载界面：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    >      <RelativeLayout        android:layout_width="180dp"        android:layout_height="180dp"        android:layout_centerInParent="true"        android:background="@drawable/loading_bg" >        <LinearLayout            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:gravity="center"            android:orientation="vertical" >                        <ProgressBar        android:id="@+id/progressBar1"        style="?android:attr/progressBarStyleLarge"        android:layout_width="wrap_content"        android:layout_height="wrap_content"                android:layout_gravity="center_horizontal"                 />              <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="正在登录"       android:layout_marginTop="10dp"        android:textColor="#fff"        android:textSize="20sp"        />        </LinearLayout>    </RelativeLayout></RelativeLayout>

定义了一个ProgressBar，效果如下：

再来看看引导界面的实现

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >     <android.support.v4.view.ViewPager        android:id="@+id/whatsnew_viewpager"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center" >       </android.support.v4.view.ViewPager>          <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="horizontal"        >                  <LinearLayout            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:layout_gravity="bottom"        android:layout_marginBottom="30dp"         android:gravity="center_horizontal"     >                        <ImageView            android:id="@+id/page0"        android:layout_width="wrap_content"        android:layout_height="wrap_content"                     android:scaleType="matrix"        android:src="@drawable/page_now" />            <ImageView            android:id="@+id/page1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="10dp"                     android:scaleType="matrix"        android:src="@drawable/page" />            <ImageView            android:id="@+id/page2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="10dp"                        android:scaleType="matrix"        android:src="@drawable/page" />            <ImageView            android:id="@+id/page3"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         android:layout_marginLeft="10dp"                       android:scaleType="matrix"        android:src="@drawable/page" />            <ImageView            android:id="@+id/page4"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         android:layout_marginLeft="10dp"                       android:scaleType="matrix"        android:src="@drawable/page" />            <ImageView            android:id="@+id/page5"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         android:layout_marginLeft="10dp"                       android:scaleType="matrix"        android:src="@drawable/page" />                               </LinearLayout>                   </LinearLayout>       </FrameLayout>

在上面我们使用到了一个ViewPager组件，这个组件的作用是时图片可以左右滑动，使用方法详见：http://www.uml.org.cn/mobiledev/201211294.asp

定义的ViewPage的适配器以及下部的选中状态ImageView的设置如下：

package com.example.weixin.activity;import java.util.ArrayList;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.view.LayoutInflater;import android.view.View;import android.widget.ImageView;import com.example.weixin.R;public class Whatsnew extends Activity {private ViewPager mViewPager;private ImageView mPage0;private ImageView mPage1;private ImageView mPage2;private ImageView mPage3;private ImageView mPage4;private ImageView mPage5;private int currIndex = 0;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.whatsnew_viewpager);        mViewPager = (ViewPager)findViewById(R.id.whatsnew_viewpager);                mViewPager.setOnPageChangeListener(new MyOnPageChangeListener());                       mPage0 = (ImageView)findViewById(R.id.page0);        mPage1 = (ImageView)findViewById(R.id.page1);        mPage2 = (ImageView)findViewById(R.id.page2);        mPage3 = (ImageView)findViewById(R.id.page3);        mPage4 = (ImageView)findViewById(R.id.page4);        mPage5 = (ImageView)findViewById(R.id.page5);              //将要分页显示的View装入数组中        LayoutInflater mLi = LayoutInflater.from(this);        View view1 = mLi.inflate(R.layout.whats1, null);        View view2 = mLi.inflate(R.layout.whats2, null);        View view3 = mLi.inflate(R.layout.whats3, null);        View view4 = mLi.inflate(R.layout.whats4, null);        View view5 = mLi.inflate(R.layout.whats5, null);        View view6 = mLi.inflate(R.layout.whats6, null);              //每个页面的view数据        final ArrayList<View> views = new ArrayList<View>();        views.add(view1);        views.add(view2);        views.add(view3);        views.add(view4);        views.add(view5);        views.add(view6);                //填充ViewPager的数据适配器        PagerAdapter mPagerAdapter = new PagerAdapter() {@Overridepublic boolean isViewFromObject(View arg0, Object arg1) {return arg0 == arg1;}@Overridepublic int getCount() {return views.size();}@Overridepublic void destroyItem(View container, int position, Object object) {((ViewPager)container).removeView(views.get(position));}@Overridepublic Object instantiateItem(View container, int position) {((ViewPager)container).addView(views.get(position));return views.get(position);}};mViewPager.setAdapter(mPagerAdapter);    }            public class MyOnPageChangeListener implements OnPageChangeListener {@Overridepublic void onPageSelected(int arg0) {switch (arg0) {case 0:mPage0.setImageDrawable(getResources().getDrawable(R.drawable.page_now));mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page));break;case 1:mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page_now));mPage0.setImageDrawable(getResources().getDrawable(R.drawable.page));mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page));break;case 2:mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page_now));mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page));mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page));break;case 3:mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page_now));mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page));mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page));break;case 4:mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page_now));mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page));mPage5.setImageDrawable(getResources().getDrawable(R.drawable.page));break;case 5:mPage5.setImageDrawable(getResources().getDrawable(R.drawable.page_now));mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page));break;}currIndex = arg0;//animation.setFillAfter(true);// True:图片停在动画结束位置//animation.setDuration(300);//mPageImg.startAnimation(animation);}@Overridepublic void onPageScrolled(int arg0, float arg1, int arg2) {}@Overridepublic void onPageScrollStateChanged(int arg0) {}}    public void startbutton(View v) {        Intent intent = new Intent();intent.setClass(Whatsnew.this,WhatsnewDoor.class);startActivity(intent);this.finish();      }      }

最后的运行效果：