Android ViewPager欢迎页+引导页+进入首页

 1 import android.app.Activity;  2 import android.content.Intent;  3 import android.content.SharedPreferences;  4 import android.content.SharedPreferences.Editor;  5 import android.os.Bundle;  6 import android.os.Handler;  7  8 /** 欢迎界面 */  9 public class WelcomeAct extends Activity { 10 11 private boolean isFirstIn = false; 12 private static final int TIME = 2000; 13 private static final int GO_HOME = 1000; 14 private static final int GO_GUIDE = 1001; 15 16 private Handler mHandler = new Handler() { 17 public void handleMessage(android.os.Message msg) { 18 switch (msg.what) { 19 // 跳入主界面 20 case GO_HOME: 21  goHome(); 22 break; 23 // 跳入引导页 24 case GO_GUIDE: 25  goGuide(); 26 break; 27  } 28  }; 29  }; 30 31  @Override 32 protected void onCreate(Bundle savedInstanceState) { 33 super.onCreate(savedInstanceState); 34  setContentView(R.layout.welcome); 35  init(); 36  } 37 38 private void init() { 39 SharedPreferences perPreferences = getSharedPreferences("jike", 40  MODE_PRIVATE); 41 isFirstIn = perPreferences.getBoolean("isFirstIn", true); 42 if (!isFirstIn) { 43  mHandler.sendEmptyMessageDelayed(GO_HOME, TIME); 44 } else { 45  mHandler.sendEmptyMessageDelayed(GO_GUIDE, TIME); 46 Editor editor = perPreferences.edit(); 47 editor.putBoolean("isFirstIn", false); 48  editor.commit(); 49  } 50  } 51 52 private void goHome() { 53 Intent i = new Intent(WelcomeAct.this, MainActivity.class); 54  startActivity(i); 55  finish(); 56  } 57 58 private void goGuide() { 59 Intent i = new Intent(WelcomeAct.this, Guide.class); 60  startActivity(i); 61  finish(); 62  } 63 64 }

 

 1 import java.util.ArrayList;  2 import java.util.List;  3 import android.app.Activity;  4 import android.content.Intent;  5 import android.os.Bundle;  6 import android.support.v4.view.ViewPager;  7 import android.support.v4.view.ViewPager.OnPageChangeListener;  8 import android.view.LayoutInflater;  9 import android.view.View; 10 import android.view.View.OnClickListener; 11 import android.widget.Button; 12 import android.widget.ImageView; 13 14 /** 引导页 */ 15 public class Guide extends Activity implements OnPageChangeListener { 16 17 private ViewPager vp; 18 private ViewPagerAdapter vpAdapter; 19 private List<View> views; 20 private ImageView[] dots; 21 private int[] ids = { R.id.iv1, R.id.iv2, R.id.iv3 }; 22 private Button start_btn; 23 24  @Override 25 protected void onCreate(Bundle savedInstanceState) { 26 super.onCreate(savedInstanceState); 27  setContentView(R.layout.guide); 28  initViews(); 29  initDots(); 30  } 31 32 private void initViews() { 33 LayoutInflater inflater = LayoutInflater.from(this); 34 35 views = new ArrayList<View>(); 36 views.add(inflater.inflate(R.layout.one, null)); 37 views.add(inflater.inflate(R.layout.two, null)); 38 views.add(inflater.inflate(R.layout.three, null)); 39 40 vpAdapter = new ViewPagerAdapter(views, this); 41 vp = (ViewPager) findViewById(R.id.viewpager); 42  vp.setAdapter(vpAdapter); 43 // 下标从0开始，所以第三个页面是get(2)。 44 start_btn = (Button) views.get(2).findViewById(R.id.start_btn); 45 start_btn.setOnClickListener(new OnClickListener() { 46  @Override 47 public void onClick(View arg0) { 48 Intent i = new Intent(Guide.this, MainActivity.class); 49  startActivity(i); 50  finish(); 51  } 52  }); 53 vp.setOnPageChangeListener(this); 54  } 55 56 /** 循环设置点 */ 57 private void initDots() { 58 dots = new ImageView[views.size()]; 59 for (int i = 0; i < views.size(); i++) { 60 dots[i] = (ImageView) findViewById(ids[i]); 61  } 62  } 63 64 @Override /** 滑动状态改变的时候 */ 65 public void onPageScrollStateChanged(int arg0) { 66 // TODO Auto-generated method stub 67  } 68 69 @Override /** 当页面被滑动时候调用 */ 70 public void onPageScrolled(int arg0, float arg1, int arg2) { 71 // TODO Auto-generated method stub 72  } 73 74 @Override /** 当前新的页面被选中时调用 */ 75 public void onPageSelected(int arg0) { 76 for (int i = 0; i < ids.length; i++) { 77 if (arg0 == i) { 78 // 亮点 79  dots[i].setImageResource(R.drawable.login_point_selected); 80 } else { 81 // 暗点 82  dots[i].setImageResource(R.drawable.login_point); 83  } 84  } 85  } 86 87 }

 1 <?xml version="1.0" encoding="utf-8"?>  2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  3  android:layout_width="match_parent"  4  android:layout_height="match_parent" >  5  6 <android.support.v4.view.ViewPager  7 android:id="@+id/viewpager"  8  android:layout_width="fill_parent"  9  android:layout_height="fill_parent" 10  android:background="#00000000" > 11 </android.support.v4.view.ViewPager> 12 13 <!-- 底部三个点 --> 14 <LinearLayout 15 android:id="@+id/ll" 16  android:layout_width="fill_parent" 17  android:layout_height="wrap_content" 18  android:layout_alignParentBottom="true" 19  android:gravity="center_horizontal" 20  android:orientation="horizontal" > 21 <!-- 选中点 --> 22 <ImageView 23 android:id="@+id/iv1" 24  android:layout_width="wrap_content" 25  android:layout_height="wrap_content" 26  android:src="@drawable/login_point_selected" /> 27 <!-- 未选中点 --> 28 <ImageView 29 android:id="@+id/iv2" 30  android:layout_width="wrap_content" 31  android:layout_height="wrap_content" 32  android:src="@drawable/login_point" /> 33 <!-- 未选中点 --> 34 <ImageView 35 android:id="@+id/iv3" 36  android:layout_width="wrap_content" 37  android:layout_height="wrap_content" 38  android:src="@drawable/login_point" /> 39 </LinearLayout> 40 41 </RelativeLayout>

 

DEMO下载：http://pan.baidu.com/s/1i3vHoLv