【文件属性】：
文件名称：ViewPagerFragment滑动切换
文件大小：456KB
文件格式：RAR
更新时间：2018-07-21 12:10:41
滑动切换
package com.pyy.viewpagerfragment;
import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.Display;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import com.pyy.viewpagerfragment.R;
public class MainActivity extends FragmentActivity {
public MainViewPager viewPager;
public List fragments = new ArrayList();
public String hello = "hello ";
private ImageView mTab1, mTab2, mTab3, mTab4;
private ImageView mTabImg;
private int currIndex = 0;// 当前页卡编号
private int zero = 0;// 动画图片偏移量
private int one;//单个水平动画位移
private int two;
private int three;
private FragmentManager fragmentManager;
private int displayWidth, displayHeight;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Display currDisplay = getWindowManager().getDefaultDisplay();//获取屏幕当前分辨率
displayWidth = currDisplay.getWidth();
displayHeight = currDisplay.getHeight();
one = displayWidth / 4; //设置水平动画平移大小
two = one * 2;
three = one * 3;
initViews();//初始化控件
fragments.add(new TabAFragment());
fragments.add(new TabBFragment());
fragments.add(new TabCFragment());
fragments.add(new TabDFragment());
fragmentManager = this.getSupportFragmentManager();
viewPager = (MainViewPager) findViewById(R.id.viewPager);
//viewPager.setSlipping(false);//设置ViewPager是否可以滑动
viewPager.setOffscreenPageLimit(4);
viewPager.setOnPageChangeListener(new MyOnPageChangeListener());
viewPager.setAdapter(new MyPagerAdapter());
}
/**
*@Title: initViews
*@Description: TODO初始化控件
*/
public void initViews() {
final LinearLayout tab1Layout = (LinearLayout) findViewById(R.id.tab1Layout);
mTab1 = (ImageView) findViewById(R.id.img_weixin);
mTab2 = (ImageView) findViewById(R.id.img_address);
mTab3 = (ImageView) findViewById(R.id.img_friends);
mTab4 = (ImageView) findViewById(R.id.img_settings);
mTabImg = (ImageView) findViewById(R.id.img_tab_now);
mTab1.setOnClickListener(new MyOnClickListener(0));
mTab2.setOnClickListener(new MyOnClickListener(1));
mTab3.setOnClickListener(new MyOnClickListener(2));
mTab4.setOnClickListener(new MyOnClickListener(3));
//以下是设置移动条的初始位置
RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) mTabImg
.getLayoutParams();
int[] location = new int[2];
mTab1.getLocationInWindow(location);
int marginLeft = (displayWidth / 4 - 122) / 2;//122是tab下面移动条的宽度
lp.setMargins(marginLeft, 0, 0, 0);
mTabImg.setLayoutParams(lp);
mTabImg.setVisibility(View.VISIBLE);
}
/**
* @ClassName: MyOnPageChangeListener
* @Description: TODO页卡切换监听
* @author Panyy
* @date 2013 2013年11月6日 下午2:08:10
*
*/
public class MyOnPageChangeListener implements OnPageChangeListener {
@Override
public void onPageSelected(int arg0) {
Animation animation = null;
switch (arg0) {
case 0:
mTab1.setImageDrawable(getResources().getDrawable(
R.drawable.tab_weixin_pressed));
if (currIndex == 1) {
animation = new TranslateAnimation(one, 0, 0, 0);
mTab2.setImageDrawable(getResources().getDrawable(
R.drawable.tab_address_normal));
} else if (currIndex == 2) {
animation = new TranslateAnimation(two, 0, 0, 0);
mTab3.setImageDrawable(getResources().getDrawable(
R.drawable.tab_find_frd_normal));
} else if (currIndex == 3) {
animation = new TranslateAnimation(three, 0, 0, 0);
mTab4.setImageDrawable(getResources().getDrawable(
R.drawable.tab_settings_normal));
}
break;
case 1:
mTab2.setImageDrawable(getResources().getDrawable(
R.drawable.tab_address_pressed));
if (currIndex == 0) {
animation = new TranslateAnimation(zero, one, 0, 0);
mTab1.setImageDrawable(getResources().getDrawable(
R.drawable.tab_weixin_normal));
} else if (currIndex == 2) {
animation = new TranslateAnimation(two, one, 0, 0);
mTab3.setImageDrawable(getResources().getDrawable(
R.drawable.tab_find_frd_normal));
} else if (currIndex == 3) {
animation = new TranslateAnimation(three, one, 0, 0);
mTab4.setImageDrawable(getResources().getDrawable(
R.drawable.tab_settings_normal));
}
break;
case 2:
mTab3.setImageDrawable(getResources().getDrawable(
R.drawable.tab_find_frd_pressed));
if (currIndex == 0) {
animation = new TranslateAnimation(zero, two, 0, 0);
mTab1.setImageDrawable(getResources().getDrawable(
R.drawable.tab_weixin_normal));
} else if (currIndex == 1) {
animation = new TranslateAnimation(one, two, 0, 0);
mTab2.setImageDrawable(getResources().getDrawable(
R.drawable.tab_address_normal));
} else if (currIndex == 3) {
animation = new TranslateAnimation(three, two, 0, 0);
mTab4.setImageDrawable(getResources().getDrawable(
R.drawable.tab_settings_normal));
}
break;
case 3:
mTab4.setImageDrawable(getResources().getDrawable(
R.drawable.tab_settings_pressed));
if (currIndex == 0) {
animation = new TranslateAnimation(zero, three, 0, 0);
mTab1.setImageDrawable(getResources().getDrawable(
R.drawable.tab_weixin_normal));
} else if (currIndex == 1) {
animation = new TranslateAnimation(one, three, 0, 0);
mTab2.setImageDrawable(getResources().getDrawable(
R.drawable.tab_address_normal));
} else if (currIndex == 2) {
animation = new TranslateAnimation(two, three, 0, 0);
mTab3.setImageDrawable(getResources().getDrawable(
R.drawable.tab_find_frd_normal));
}
break;
}
currIndex = arg0;
animation.setFillAfter(true);// True:图片停在动画结束位置
animation.setDuration(150);
mTabImg.startAnimation(animation);
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
}
/**
* @ClassName: MyOnClickListener
* @Description: TODO头标点击监听
* @author Panyy
* @date 2013 2013年11月6日 下午2:46:08
*
*/
private class MyOnClickListener implements View.OnClickListener {
private int index = 0;
public MyOnClickListener(int i) {
index = i;
}
@Override
public void onClick(View v) {
viewPager.setCurrentItem(index);
}
};
/**
* @ClassName: MyPagerAdapter
* @Description: TODO填充ViewPager的数据适配器
* @author Panyy
* @date 2013 2013年11月6日 下午2:37:47
*
*/
private class MyPagerAdapter extends PagerAdapter {
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
@Override
public int getCount() {
return fragments.size();
}
@Override
public void destroyItem(View container, int position, Object object) {
((ViewPager) container).removeView(fragments.get(position)
.getView());
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
Fragment fragment = fragments.get(position);
if (!fragment.isAdded()) { // 如果fragment还没有added
FragmentTransaction ft = fragmentManager.beginTransaction();
ft.add(fragment, fragment.getClass().getSimpleName());
ft.commit();
/**
* 在用FragmentTransaction.commit()方法提交FragmentTransaction对象后
* 会在进程的主线程中,用异步的方式来执行。
* 如果想要立即执行这个等待中的操作,就要调用这个方法(只能在主线程中调用)。
* 要注意的是,所有的回调和相关的行为都会在这个调用中被执行完成,因此要仔细确认这个方法的调用位置。
*/
fragmentManager.executePendingTransactions();
}
if (fragment.getView().getParent() == null) {
container.addView(fragment.getView()); // 为viewpager增加布局
}
return fragment.getView();
}
};
}
【文件预览】：
ViewPagerFragment
----bin()
--------res()
--------jarlist.cache(120B)
--------classes()
--------AndroidManifest.xml(824B)
----res()
--------drawable-ldpi()
--------drawable-hdpi()
--------drawable-xhdpi()
--------drawable()
--------values()
--------drawable-mdpi()
--------layout()
----proguard-project.txt(801B)
----ant.properties(698B)
----build.xml(4KB)
----assets()
----.metadata()
--------.lock(0B)
--------.mylyn()
--------.plugins()
--------version.ini(26B)
----gen()
--------com()
----.settings()
--------org.eclipse.core.resources.prefs(57B)
--------org.eclipse.jdt.core.prefs(177B)
----src()
--------com()
----.project(853B)
----.classpath(541B)
----local.properties(432B)
----project.properties(563B)
----AndroidManifest.xml(824B)
----libs()
--------android-support-v4.jar(377KB)
