package com.example.lianxi;
import java.util.ArrayList;
import android.os.Bundle; import android.os.Handler; import android.support.v4.app.FragmentActivity; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.ImageView.ScaleType; import android.widget.RadioGroup;
public class MainActivity extends FragmentActivity {
private ViewPager viewPager; private RadioGroup group; private ArrayList<Integer> list; Handler handler = new Handler(){ public void handleMessage(android.os.Message msg) { super.handleMessage(msg); int position = viewPager.getCurrentItem(); position ++; viewPager.setCurrentItem(position); handler.sendEmptyMessageDelayed(1, 1000); }; }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); viewPager = (ViewPager) findViewById(R.id.viewpager); group = (RadioGroup) findViewById(R.id.group); list = new ArrayList<Integer>(); list.add(R.mipmap.ic_launcher); list.add(R.mipmap.ic_launcher); list.add(R.mipmap.ic_launcher); list.add(R.mipmap.ic_launcher); list.add(R.mipmap.ic_launcher); viewPager.setAdapter(new MyAdapter()); viewPager.setCurrentItem(list.size() * 10000); viewPager.setOnPageChangeListener(new OnPageChangeListener() { @Override public void onPageSelected(int arg0) { switch (arg0 % list.size()) { case 0: group.check(R.id.but01); break; case 1: group.check(R.id.but02); break; case 2: group.check(R.id.but03); break; case 3: group.check(R.id.but04); break; case 4: group.check(R.id.but05); break; default: break; } } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { // TODO Auto-generated method stub } @Override public void onPageScrollStateChanged(int arg0) { // TODO Auto-generated method stub } }); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); handler.sendEmptyMessageDelayed(1, 1000); } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); handler.removeCallbacks(null); } class MyAdapter extends PagerAdapter{ @Override public int getCount() { // TODO Auto-generated method stub return Integer.MAX_VALUE; } @Override public boolean isViewFromObject(View arg0, Object arg1) { // TODO Auto-generated method stub return arg0 == arg1; } @Override public Object instantiateItem(ViewGroup container, int position) { ImageView imageView = new ImageView(MainActivity.this); imageView.setImageResource(list.get(position % list.size())); imageView.setScaleType(ScaleType.FIT_XY); container.addView(imageView); imageView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: handler.removeCallbacksAndMessages(null); break; case MotionEvent.ACTION_UP: handler.sendEmptyMessageDelayed(1, 1000); break; default: break; } return true; } }); return imageView; } @Override public void destroyItem(ViewGroup container, int position, Object object) { container.removeView((View)object); } }}
xml布局
<android.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_width="match_parent" android:layout_height="match_parent" /> <RadioGroup android:id="@+id/group" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_centerInParent="true" > <RadioButton android:id="@+id/but01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:checked="true" /> <RadioButton android:id="@+id/but02" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <RadioButton android:id="@+id/but03" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <RadioButton android:id="@+id/but04" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <RadioButton android:id="@+id/but05" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </RadioGroup>