一：ViewPager和导航点的实现：
主布局为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.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_height="match_parent" android:layout_width="match_parent" android:background="#00000000" android:persistentDrawingCache="animation"> </android.support.v4.view.ViewPager> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/ll" android:orientation="horizontal" android:gravity="center_horizontal" android:layout_alignParentBottom = "true"> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/iv1" android:src="@drawable/login_point" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/iv2" android:src="@drawable/login_point_selected" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/iv3" android:src="@drawable/login_point_selected" /> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/iv4" android:src="@drawable/login_point_selected" /> </LinearLayout></RelativeLayout>
guide.java:
package com.banana.k08.viewpagerdemo1;import android.content.Intent;import android.os.Bundle;import android.support.v4.view.ViewPager;import android.support.v7.app.ActionBarActivity;import android.view.LayoutInflater;import android.view.View;import android.widget.Button;import android.widget.ImageView;import java.util.ArrayList;import java.util.List;/** * Created by bananagg on 2015-07-28. */public class Guide extends ActionBarActivity implements ViewPager.OnPageChangeListener{ private ViewPager vp; private ViewPagerAdapter vpAdapter; private List<View> views; private ImageView[] dots; private int[] ids={R.id.iv1,R.id.iv2,R.id.iv3,R.id.iv4}; private Button start_btn; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.guide); initView(); initDots(); } private void initView() { LayoutInflater inflater = LayoutInflater.from(this); views = new ArrayList<View>(); views.add(inflater.inflate(R.layout.one,null)); //添加图片 views.add(inflater.inflate(R.layout.two,null)); views.add(inflater.inflate(R.layout.three,null)); views.add(inflater.inflate(R.layout.four,null)); vpAdapter = new ViewPagerAdapter(views,this); vp = (ViewPager) findViewById(R.id.viewpager); vp.setAdapter(vpAdapter); start_btn = (Button) views.get(3).findViewById(R.id.start_btn); start_btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { startActivity(new Intent(Guide.this,MainActivity.class)); finish(); } }); vp.setOnPageChangeListener(this); //回调函数,用于页面改变的监听 } private void initDots(){ dots = new ImageView[views.size()]; for(int i=0;i<views.size();i++){ dots[i] = (ImageView) findViewById(ids[i]); } } @Override public void onPageScrolled(int i, float v, int i2) { } @Override public void onPageSelected(int arg0) { //更改当前导航的颜色 for (int i=0;i<ids.length;i++){ if(arg0 == i){ dots[i].setImageResource(R.drawable.login_point); } else{ dots[i].setImageResource(R.drawable.login_point_selected); } } } @Override public void onPageScrollStateChanged(int i) { }}二：设置数据存储
对于很多APP，只有在安装软件是才会有导航页，在第二次打开着软件时是不会继续加载导航页的，所以我们需要一个变量来控制这个页面的跳转，这儿采用SharedPreferences方式存储数据，用这个存储的数据来控制页面跳转的变量值。
package com.banana.k08.viewpagerdemo1;import android.content.Intent;import android.content.SharedPreferences;import android.os.Handler;import android.os.Message;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;public class WelcomeAct extends ActionBarActivity { private boolean isFirstIn =false; private static final int TIME = 2000; private static final int GO_HOME = 1000; private static final int GO_GUIDE = 1001; private Handler mHandler = new Handler(){ public void handleMessage(Message msg){ switch (msg.what){ case GO_GUIDE: goGuide(); break; case GO_HOME: goHome(); break; } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_welcome); init(); } private void init(){ SharedPreferences perPreferences = getSharedPreferences("jike",MODE_PRIVATE); //MODE_PRIVATE表示该文件只能被自身应用调用 isFirstIn = perPreferences.getBoolean("isFirstIn",true); // System.out.println(isFirstIn); if(!isFirstIn){ mHandler.sendEmptyMessageDelayed(GO_HOME,TIME); } else{ mHandler.sendEmptyMessageDelayed(GO_GUIDE,TIME); SharedPreferences.Editor editor = perPreferences.edit(); //取得编辑 editor.putBoolean("isFirstIn",false); //提交数据 editor.commit(); //已经解锁注册，所以更改数据时不会触发监听器 } } private void goHome(){ Intent i = new Intent(WelcomeAct.this,MainActivity.class); startActivity(i); finish(); } private void goGuide(){ Intent i = new Intent(WelcomeAct.this,Guide.class); startActivity(i); finish(); }}版权声明：本文为博主原创文章，未经博主允许不得转载。