//activity
package com.xybb.ui.activity;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
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.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.TextView;
/*import android.widget.Toast;*/
public class ViewPagerTest extends Activity {
private ViewPager viewPager;// 頁卡內容
private ImageView imageView;// 動畫圖片
private TextView textView1, textView2, textView3;//頂部選項卡
private List<View> views;// Tab頁面列表
private int offset = 0;// 動畫圖片偏移量
private int currIndex = 0;// 當前頁卡編號
private int bmpW;// 動畫圖片寬度
private View view1, view2, view3;// 各個頁卡
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_pager);
/*初始化控件*/
InitImageView();
InitTextView();
InitViewPager();
}
/**
* InitViewPager 裝載適配器，添加事件監聽
*/
private void InitViewPager() {
viewPager = (ViewPager) findViewById(R.id.vPager);
views = new ArrayList<View>();
LayoutInflater inflater = getLayoutInflater();
view1 = inflater.inflate(R.layout.layout1, null);
view2 = inflater.inflate(R.layout.layout2, null);
view3 = inflater.inflate(R.layout.layout3, null);
views.add(view1);
views.add(view2);
views.add(view3);
viewPager.setAdapter(new MyViewPagerAdapter(views));
viewPager.setCurrentItem(0);
viewPager.setOnPageChangeListener(new MyOnPageChangeListener());
}
/**
* 初始化頭標
*/
private void InitTextView() {
textView1 = (TextView) findViewById(R.id.text1);
textView2 = (TextView) findViewById(R.id.text2);
textView3 = (TextView) findViewById(R.id.text3);
textView1.setOnClickListener(new MyOnClickListener(0));
textView2.setOnClickListener(new MyOnClickListener(1));
textView3.setOnClickListener(new MyOnClickListener(2));
}
/**
* 2 * 初始化動畫，這個就是頁卡滑動時，下面的橫線也滑動的效果，在這裏需要計算一些數據 3
*/
private void InitImageView() {
imageView = (ImageView) findViewById(R.id.cursor);
/*獲取圖片寬度*/
bmpW = BitmapFactory.decodeResource(getResources(),R.drawable.btn_blue_normal_shape).getWidth();
/*獲取手機屏幕分辨率尺寸*/
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int screenW = dm.widthPixels;// 獲取屏幕分辨率寬度
offset = (screenW / 3 - bmpW) / 2;// 計算偏移量
Matrix matrix = new Matrix();
matrix.postTranslate(offset, 0);
imageView.setImageMatrix(matrix);// 設置動畫初始位置
}
/**
* <IMG alt=""
* src="http://img.my.csdn.net/uploads/201211/10/1352554452_1685.jpg">
*
* 頭標點擊監聽 3
*/
private class MyOnClickListener implements OnClickListener {
private int index = 0;
public MyOnClickListener(int i) {
index = i;
}
public void onClick(View v) {
viewPager.setCurrentItem(index);
}
}
/**
* 內部類 ---- 適配器類
*
* @author crobot
*
*/
public class MyViewPagerAdapter extends PagerAdapter {
private List<View> mListViews;
public MyViewPagerAdapter(List<View> mListViews) {
this.mListViews = mListViews;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView(mListViews.get(position));
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
container.addView(mListViews.get(position), 0);
return mListViews.get(position);
}
@Override
public int getCount() {
return mListViews.size();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
}
/**
* 內部類 ---- viewpager事件監聽類
*
* @author crobot
*
*/
public class MyOnPageChangeListener implements OnPageChangeListener {
int one = offset * 2 + bmpW;// 頁卡1 -> 頁卡2 偏移量
int two = one * 2;// 頁卡1 -> 頁卡3 偏移量
@Override
public void onPageScrollStateChanged(int arg0) {
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageSelected(int arg0) {
/*優化方案
* 兩種方法，這個是一種，下面還有一種，顯然這個比較麻煩 Animation animation = null; switch
* (arg0) { case 0: if (currIndex == 1) { animation = new
* TranslateAnimation(one, 0, 0, 0); } else if (currIndex == 2) {
* animation = new TranslateAnimation(two, 0, 0, 0); } break; case
* 1: if (currIndex == 0) { animation = new
* TranslateAnimation(offset, one, 0, 0); } else if (currIndex == 2)
* { animation = new TranslateAnimation(two, one, 0, 0); } break;
* case 2: if (currIndex == 0) { animation = new
* TranslateAnimation(offset, two, 0, 0); } else if (currIndex == 1)
* { animation = new TranslateAnimation(one, two, 0, 0); } break;
*
* }
*/
Animation animation = new TranslateAnimation(one * currIndex, one * arg0, 0, 0);// 顯然這個比較簡潔，只有一行代碼。
currIndex = arg0;
animation.setFillAfter(true);// True:圖片停在動畫結束位置
animation.setDuration(300);
imageView.startAnimation(animation);
// Toast.makeText(WeiBoActivity.this, "您選擇了"+
// viewPager.getCurrentItem()+"頁卡", Toast.LENGTH_SHORT).show();
}
}
}
//xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="40.0dip"
android:background="#FFFFFF" >
<TextView
android:id="@+id/text1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.0"
android:gravity="center"
android:text=" @我"
android:textColor="#000000"
android:textSize="20.0dip" />
<TextView
android:id="@+id/text2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.0"
android:gravity="center"
android:text="評論"
android:textColor="#000000"
android:textSize="20.0dip" />
<TextView
android:id="@+id/text3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.0"
android:gravity="center"
android:text="私信"
android:textColor="#000000"
android:textSize="20.0dip" />
</LinearLayout>
<ImageView
android:id="@+id/cursor"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scaleType="matrix"
/>
<!-- android:src="@drawable/a" -->
<android.support.v4.view.ViewPager
android:id="@+id/vPager"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1.0"
android:background="#000000"
android:flipInterval="30"
android:persistentDrawingCache="animation" />
</LinearLayout>