实例介绍
【实例简介】
【实例截图】
【核心代码】
package com.example.viewpager;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.widget.ImageView;
import android.widget.LinearLayout;
public class MainActivity extends Activity {
private ViewPager viewPager;
private List<View> list;
private ImageView imageView;
private ImageView[] imageViews;
private int num = 300;
private LocalActivityManager manager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main_activity);
manager = new LocalActivityManager(this , true);
manager.dispatchCreate(savedInstanceState);
list = new ArrayList<View>();
Intent intent = new Intent(MainActivity.this,ImageActivity1.class);
list.add(getView("ImageActivity1", intent));
intent = new Intent(MainActivity.this,ImageActivity2.class);
getView("ImageActivity2", intent);
list.add(getView("ImageActivity2", intent));
intent = new Intent(MainActivity.this,ImageActivity3.class);
getView("ImageActivity3", intent);
list.add(getView("ImageActivity3", intent));
intent = new Intent(MainActivity.this,ImageActivity4.class);
getView("ImageActivity4", intent);
list.add(getView("ImageActivity4", intent));
intent = new Intent(MainActivity.this,ImageActivity5.class);
getView("ImageActivity5", intent);
list.add(getView("ImageActivity5", intent));
imageViews = new ImageView[list.size()];
LinearLayout linearLayout = (LinearLayout) findViewById(R.id.viewGroup);
viewPager = (ViewPager)findViewById(R.id.viewPager);
for (int i = 0; i < list.size(); i ) {
imageViews[i] = new ImageView(this);
imageViews[i].setLayoutParams(new LayoutParams(12,12));
if (i == 0) {
imageViews[i].setBackgroundResource(R.drawable.white);
} else {
imageViews[i].setBackgroundResource(R.drawable.black);
}
linearLayout.addView(imageViews[i]);
}
viewPager.setAdapter(new MyAdapter());
viewPager.setOnPageChangeListener(new MyListener());
viewPager.setCurrentItem(300);
mHandler.postDelayed(mRunnable, 2000);
}
private Handler mHandler = new Handler();
private Runnable mRunnable = new Runnable() {
public void run() {
//姣忛殧澶氶暱鏃堕棿鎵ц涓�
//mHandler.postDelayed(mRunnable, 1000*PhoneConstans.TIMEVALUE);
mHandler.postDelayed(mRunnable, 1000*2);
num ;
viewHandler.sendEmptyMessage(num);
}
};
private View getView(String id,Intent intent){
return manager.startActivity(id, intent).getDecorView();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
this.finish();
mHandler.removeCallbacks(mRunnable);
default:
break;
}
return super.onKeyDown(keyCode, event);
}
private final Handler viewHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
viewPager.setCurrentItem(msg.what);
super.handleMessage(msg);
}
};
class MyAdapter extends PagerAdapter {
@Override
public int getCount() {
return Integer.MAX_VALUE;
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
@Override
public int getItemPosition(Object object) {
// TODO Auto-generated method stub
return super.getItemPosition(object);
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
// TODO Auto-generated method stub
((ViewPager) arg0).removeView(list.get(arg1%list.size()));
}
@Override
public Object instantiateItem(View arg0, int arg1) {
// TODO Auto-generated method stub
try{
//((ViewPager) arg0).addView(list.get(arg1),0);
((ViewPager) arg0).addView((View) list.get(arg1%list.size()),0);
}catch (Exception e) {
// TODO: handle exception
}
return list.get(arg1%list.size());
}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
// TODO Auto-generated method stub
}
@Override
public Parcelable saveState() {
// TODO Auto-generated method stub
return null;
}
@Override
public void startUpdate(View arg0) {
// TODO Auto-generated method stub
}
@Override
public void finishUpdate(View arg0) {
// TODO Auto-generated method stub
}
}
class MyListener implements OnPageChangeListener {
//褰撴粦鍔ㄧ姸鎬佹敼鍙樻椂璋冪敤
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
//arg0=arg0%list.size();
}
//褰撳綋鍓嶉〉闈㈣婊戝姩鏃惰皟鐢�
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
//褰撴柊鐨勯〉闈㈣閫変腑鏃惰皟鐢�
@Override
public void onPageSelected(int arg0) {
num = arg0;
arg0=arg0%list.size();
for (int i = 0; i < imageViews.length; i ) {
imageViews[arg0].setBackgroundResource(R.drawable.white);
if (arg0 != i) {
imageViews[i].setBackgroundResource(R.drawable.black);
}
}
System.out.println( "褰撳墠鏄" arg0);
}
}
}
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