ViewPager implements boot page and viewpager guides

ViewPager implements boot page and viewpager guides
ViewPager implements boot pages

I will not talk much about it. I will talk to the Code directly.

Fry. Activity01

1 package fry; 2 3 import java. util. arrayList; 4 import java. util. collection; 5 import java. util. iterator; 6 import java. util. list; 7 import java. util. listIterator; 8 9 import com. example. viewPager. r; 10 11 import android. app. activity; 12 import android. OS. bundle; 13 import android. support. v4.view. viewPager; 14 import android. support. v4.view. viewPager. onPageChangeListener; 15 import android. view. view; 16 import android. view. view. onClickListener; 17 import android. view. viewGroup. layoutParams; 18 import android. widget. imageView; 19 import android. widget. linearLayout; 20 21 public class Activity01 extends Activity implements OnPageChangeListener, OnClickListener {22 private ViewPager viewPager; 23 private List <View> views; // stores the ImageView 24 private int [] imageID in ViewPager; // 25 private ImagePagerAdapter adapter; // adapter 26 private LinearLayout linearLayout; 27 private int currentPoint; // The subscript 28 @ Override 29 protected void onCreate (Bundle savedInstanceState) {30 // TODO Auto-generated method stub 31 super. onCreate (savedInstanceState); 32 setContentView (R. layout. activity01); 33 initData (); 34 initView (); 35 36} 37 // initialize view 38 void initView () {39 adapter = new ImagePagerAdapter (views ); 40 viewPager = (ViewPager) findViewById (R. id. viewPager); 41 viewPager. setAdapter (adapter); 42 linearLayout = (LinearLayout) findViewById (R. id. linearLayout); 43 initPoint (); 44 viewPager. setOnPageChangeListener (this); 45} 46 47 // initialization data 48 void initData () {49 // put all the image IDs in the imageID set 50 imageID = new int [] {R. drawable. guide1, R. drawable. guide2, R. drawable. guide3, R. drawable. guide4}; 51 views = new ArrayList <View> (); 52 // set the LayoutParams parameter 53 LayoutParams layoutParams = new LayoutParams (LayoutParams. MATCH_PARENT, LayoutParams. MATCH_PARENT); 54 for (int I: imageID) {55 // not sure 1 56 ImageView imageView = new ImageView (this); 57 imageView. setImageResource (I); 58 imageView. setLayoutParams (layoutParams); 59 views. add (imageView); 60} 61 62 63} 64 65/* 66 * point 67 */68 private void initPoint () at the bottom of the initialization page () {69 ImageView [] imageView = new ImageView [imageID. length]; 70 for (int I = 0; I <linearLayout. getChildCount (); I ++) {71 imageView [I] = (ImageView) linearLayout. getChildAt (I); 72 imageView [I]. setImageResource (R. drawable. point_normal); 73 imageView [I]. setOnClickListener (this); 74 imageView [I]. setTag (I); 75} 76 currentPoint = 0; 77 imageView [currentPoint]. setImageResource (R. drawable. point_select); 78} 79/* 80 * set all the points at the bottom of the page to the unselected status 81 */82 private ImageView [] clearPoint () {83 ImageView [] imageView = new ImageView [imageID. length]; 84 for (int I = 0; I <linearLayout. getChildCount (); I ++) {85 imageView [I] = (ImageView) linearLayout. getChildAt (I); 86 imageView [I]. setImageResource (R. drawable. point_normal); 87} 88 return imageView; 89} 90 91 @ Override 92 public void onPageScrollStateChanged (int arg0) {93 // TODO Auto-generated method stub 94 95} 96 97 @ Override 98 public void onPageScrolled (int arg0, float arg1, int arg2) {99 // TODO Auto-generated method stub100 101} 102 103/* 104 * method executed when the page is selected 105 * (non-Javadoc) 106 * @ see android. support. v4.view. viewPager. onPageChangeListener # onPageSelected (int) 107 */108 @ Override109 public void onPageSelected (int position) {110 // TODO Auto-generated method stub111 ImageView [] imageView = clearPoint (); 112 imageView [position]. setImageResource (R. drawable. point_select); 113} 114 115 // small dot Click Event 116 @ Override117 public void onClick (View v) {118 // TODO Auto-generated method stub119 int I = (Integer) v. getTag (); 120 viewPager. setCurrentItem (I); 121} 122 123}

 

Fry. ImagePagerAdapter

1 package fry; 2 3 import java. util. arrayList; 4 import java. util. list; 5 6 import android. support. v4.view. pagerAdapter; 7 import android. support. v4.view. viewPager; 8 import android. view. view; 9 import android. view. viewGroup; 10 11 public class ImagePagerAdapter extends PagerAdapter {12 13 private List <View> views; 14 15 16 17 public ImagePagerAdapter (List <View> views) {18 this. views = views; 19} 20 21 @ Override22 public int getCount () {23 // TODO Auto-generated method stub24 return this. views. size (); 25} 26/** 27 * position: display the image position in viewPager 28 * put the corresponding image to the corresponding position 29 * instantiateItem and destroyItem are the corresponding 30 * is to create an item, destroy item31 */32 @ Override33 public Object instantiateItem (ViewGroup container, int position) {34 (ViewPager) container ). addView (views. get (position); 35 return views. get (position); 36} 37 38 @ Override39 public boolean isViewFromObject (View arg0, Object arg1) {40 // TODO Auto-generated method stub41 return arg0 = arg1; 42} 43 44 @ Override45 public void destroyItem (ViewGroup container, int position, Object object) {46 (ViewPager) container ). removeView (views. get (position); 47} 48 49}

/ViewPager/res/layout/activity01.xml

 1 <?xml version="1.0" encoding="utf-8"?> 2 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     android:layout_width="match_parent" 4     android:layout_height="match_parent" 5     android:orientation="vertical" > 6  7     <android.support.v4.view.ViewPager 8         android:id="@+id/viewPager" 9         android:layout_width="match_parent"10         android:layout_height="match_parent"11         >12         13     </android.support.v4.view.ViewPager>14     15     <LinearLayout 16         android:id="@+id/linearLayout"17         android:layout_width="wrap_content"18         android:layout_height="wrap_content"19         android:orientation="horizontal"20         android:layout_gravity="bottom|center"21         >22         <ImageView 23             android:id="@+id/point1"24             android:layout_width="wrap_content"25             android:layout_height="wrap_content"26             android:src="@drawable/point_select"27             android:padding="25dip"28             />29         <ImageView 30             android:id="@+id/point2"31             android:layout_width="wrap_content"32             android:layout_height="wrap_content"33             android:src="@drawable/point_normal"34             android:padding="25dip"35             />36         <ImageView 37             android:id="@+id/point3"38             android:layout_width="wrap_content"39             android:layout_height="wrap_content"40             android:src="@drawable/point_normal"41             android:padding="25dip"42             />43         <ImageView 44             android:id="@+id/point4"45             android:layout_width="wrap_content"46             android:layout_height="wrap_content"47             android:src="@drawable/point_normal"48             android:padding="25dip"49             />50         51     </LinearLayout>52 53 </FrameLayout>

 

 

1. Multiple controls (small dots here) can be accessed by using List

2. Dynamic controls can be used to set tags to differentiate controls.