View---仿新浪引导界面

来源：互联网发布：vb识别网站验证码源码编辑：程序博客网时间：2024/05/29 15:28

转载自:http://blog.csdn.net/wsscy2004/article/details/7611529

实现功能：左右手势滑屏

底部小圆点随当前显示页跳动

浮动按钮显示。当触屏事件发生显示，否则就渐渐消失

先转个文章：http://blog.csdn.net/feng88724/article/details/6973662

第一种： ViewFlipper + GestureDetector

第二种： ActivityGroup + GestureDetector

第三种： ViewPager (Android3.0+)

第四种： ViewFlow (开源项目)

话不多说，先放上效果图

向右滑动，或者点击按钮向右

布局文件:

activity_main.xml

</RelativeLayout>

guide.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical" >


 <android.support.v4.view.ViewPager
 android:id="@+id/viewpager"
 android:layout_width="match_parent"
 android:layout_height="match_parent" />

</RelativeLayout>

splash.xml

</RelativeLayout>

what_new_one.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

</RelativeLayout>

what_new_two.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

</RelativeLayout>

what_new_three.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

</RelativeLayout>

what_new_four.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

</RelativeLayout>

drawable:

dot.xml

<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

</selector>

whats_new_start_btn.xml

<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@drawable/butten_pressed" />
<item android:drawable="@drawable/butten_unpress" />
</selector>

Activity:

SplashActivity

package cn.eoe.leigo.splash;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;

/**
*
* @{# SplashActivity.java Create on 2013-5-2 下午9:10:01
*
* class desc: 启动画面 (1)判断是否是首次加载应用--采取读取SharedPreferences的方法
* (2)是，则进入GuideActivity；否，则进入MainActivity (3)3s后执行(2)操作
*
* 
* Copyright: Copyright(c) 2013
* 
* @Version 1.0
* @Author <a href="mailto:gaolei_xj@163.com">Leo</a>
*
*
*/
public class SplashActivity extends Activity {
boolean isFirstIn = false;

private static final int GO_HOME = 1000;
private static final int GO_GUIDE = 1001;
// 延迟3秒
private static final long SPLASH_DELAY_MILLIS = 3000;

private static final String SHAREDPREFERENCES_NAME = "first_pref";

/**
* Handler:跳转到不同界面
*/
private Handler mHandler = new Handler() {

  @Override
  public void handleMessage(Message msg) {
   switch (msg.what) {
   case GO_HOME:
    goHome();
    break;
   case GO_GUIDE:
    goGuide();
    break;
   }
   super.handleMessage(msg);
  }
};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);

init();
}

private void init() {
  // 读取SharedPreferences中需要的数据
  // 使用SharedPreferences来记录程序的使用次数
  SharedPreferences preferences = getSharedPreferences(
    SHAREDPREFERENCES_NAME, MODE_PRIVATE);

// 取得相应的值，如果没有该值，说明还未写入，用true作为默认值
isFirstIn = preferences.getBoolean("isFirstIn", true);

  // 判断程序与第几次运行，如果是第一次运行则跳转到引导界面，否则跳转到主界面
  if (!isFirstIn) {
   // 使用Handler的postDelayed方法，3秒后执行跳转到MainActivity
   mHandler.sendEmptyMessageDelayed(GO_HOME, SPLASH_DELAY_MILLIS);
  } else {
   mHandler.sendEmptyMessageDelayed(GO_GUIDE, SPLASH_DELAY_MILLIS);
  }

}

private void goHome() {
  Intent intent = new Intent(SplashActivity.this, MainActivity.class);
  SplashActivity.this.startActivity(intent);
  SplashActivity.this.finish();
}

private void goGuide() {
  Intent intent = new Intent(SplashActivity.this, GuideActivity.class);
  SplashActivity.this.startActivity(intent);
  SplashActivity.this.finish();
}
}

MainActivity

package cn.eoe.leigo.splash;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.main, menu);
  return true;
}

}

GuideActivity

package cn.eoe.leigo.splash;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
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 android.widget.LinearLayout;
import cn.eoe.leigo.splash.adapter.ViewPagerAdapter;

/**
*
* @{# GuideActivity.java Create on 2013-5-2 下午10:59:08
*
* class desc: 引导界面
*
* 
* Copyright: Copyright(c) 2013
* 
* @Version 1.0
* @Author <a href="mailto:gaolei_xj@163.com">Leo</a>
*
*
*/
public class GuideActivity extends Activity implements OnPageChangeListener {

private ViewPager vp;
private ViewPagerAdapter vpAdapter;
private List<View> views;

// 底部小点图片
private ImageView[] dots;

// 记录当前选中位置
private int currentIndex;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.guide);

// 初始化页面
initViews();

// 初始化底部小点
initDots();
}

private void initViews() {
LayoutInflater inflater = LayoutInflater.from(this);

views = new ArrayList<View>();// 将要分页显示的View装入数组中
 // 初始化引导图片列表
 views.add(inflater.inflate(R.layout.what_new_one, null));
 views.add(inflater.inflate(R.layout.what_new_two, null));
 views.add(inflater.inflate(R.layout.what_new_three, null));
 views.add(inflater.inflate(R.layout.what_new_four, null));

  // 初始化Adapter
  vpAdapter = new ViewPagerAdapter(views, this);

  vp = (ViewPager) findViewById(R.id.viewpager);
  vp.setAdapter(vpAdapter);
  // 绑定回调
  vp.setOnPageChangeListener(this);
}

private void initDots() {
LinearLayout ll = (LinearLayout) findViewById(R.id.ll);

dots = new ImageView[views.size()];

// 循环取得小点图片
 for (int i = 0; i < views.size(); i++) {
 dots[i] = (ImageView) ll.getChildAt(i);
 dots[i].setEnabled(true);// 都设为灰色
 }

currentIndex = 0;
dots[currentIndex].setEnabled(false);// 设置为白色，即选中状态
}

private void setCurrentDot(int position) {
 if (position < 0 || position > views.size() - 1
 || currentIndex == position) {
 return;
 }

dots[position].setEnabled(false);
dots[currentIndex].setEnabled(true);

currentIndex = position;
}

// 当滑动状态改变时调用
@Override
public void onPageScrollStateChanged(int arg0) {
}

// 当当前页面被滑动时调用
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}

// 当新的页面被选中时调用
@Override
public void onPageSelected(int arg0) {
// 设置底部小点选中状态
setCurrentDot(arg0);
}

}

ViewPagerAdapter

package cn.eoe.leigo.splash.adapter;

import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import cn.eoe.leigo.splash.MainActivity;
import cn.eoe.leigo.splash.R;

/**
*
* @{# ViewPagerAdapter.java Create on 2013-5-2 下午11:03:39
*
* class desc: 引导页面适配器
*
* 
* Copyright: Copyright(c) 2013
* 
* @Version 1.0
* @Author <a href="mailto:gaolei_xj@163.com">Leo</a>
*
*
*/
public class ViewPagerAdapter extends PagerAdapter {

// 界面列表
private List<View> views;
private Activity activity;

private static final String SHAREDPREFERENCES_NAME = "first_pref";

public ViewPagerAdapter(List<View> views, Activity activity) {
this.views = views;;//构造方法，参数是我们的页卡，这样比较方便
this.activity = activity;
}

// 销毁arg1位置的界面
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView(views.get(arg1));//删除页卡
}

@Override
public void finishUpdate(View arg0) {
}

@Override
public int getCount() {//返回页卡的数量
  if (views != null) {
   return views.size();
  }
  return 0;
}

// 初始化arg1位置的界面
@Override
public Object instantiateItem(View arg0, int arg1) {//这个方法用来实例化页卡
  ((ViewPager) arg0).addView(views.get(arg1), 0);//添加页卡
  if (arg1 == views.size() - 1) {
   ImageView mStartWeiboImageButton = (ImageView) arg0
     .findViewById(R.id.iv_start_weibo);
   mStartWeiboImageButton.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
     // 设置已经引导
     setGuided();
     goHome();

}

   });
  }
  return views.get(arg1);
}

private void goHome() {
  // 跳转
  Intent intent = new Intent(activity, MainActivity.class);
  activity.startActivity(intent);
  activity.finish();
}

/**
*
* method desc：设置已经引导过了，下次启动不用再次引导
*/
private void setGuided() {
  SharedPreferences preferences = activity.getSharedPreferences(
    SHAREDPREFERENCES_NAME, Context.MODE_PRIVATE);
  Editor editor = preferences.edit();
  // 存入数据
  editor.putBoolean("isFirstIn", false);
  // 提交修改
  editor.commit();
}

// 判断是否由对象生成界面
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return (arg0 == arg1);//官方提示这样写
}

@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
}

@Override
public Parcelable saveState() {
return null;
}

@Override
public void startUpdate(View arg0) {
}

}

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