标签：android android应用 布局 fragment viewpager
最上面是一个导航栏，分别有三个textview构成，然后再textview下面设置一个标签卡最下面是使用Android.support.v4.view.viewpager构成
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<?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:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:id="@+id/tv_guid1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1.0" android:gravity="center" android:text="特性1" android:textSize="18sp"/> <TextView android:id="@+id/tv_guid2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1.0" android:gravity="center" android:text="特性2" android:textSize="18sp"/> <TextView android:id="@+id/tv_guid3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1.0" android:gravity="center" android:text="特性3
" android:textSize="18sp"/> <TextView android:id="@+id/tv_guid4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1.0" android:gravity="center" android:text="特性4" android:textSize="18sp"/> </LinearLayout> <TextView android:id="@+id/cursor" android:layout_width="80dp" android:layout_height="5dp" android:background="#990033" /> <android.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_width="fill_parent" android:layout_height="fill_parent" android:flipInterval="30" android:persistentDrawingCache="animation"/></LinearLayout> |
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public class MainActivity extends FragmentActivity{ private ViewPager
mPager; private ArrayList<Fragment>
fragmentList; private TextView
barText; private TextView
view1, view2, view3, view4; private int currIndex;//当前页卡编号 protected void onCreate(Bundle
savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); InitTextView(); InitTextBar(); InitViewPager(); } //
初始化标签名 public void InitTextView(){ view1
= (TextView)findViewById(R.id.tv_guid1); view2
= (TextView)findViewById(R.id.tv_guid2); view3
= (TextView)findViewById(R.id.tv_guid3); view4
= (TextView)findViewById(R.id.tv_guid4); view1.setOnClickListener(new txListener(0)); view2.setOnClickListener(new txListener(1)); view3.setOnClickListener(new txListener(2)); view4.setOnClickListener(new txListener(3)); } public class txListener implements View.OnClickListener{ private int index=0; public txListener(int i)
{ index
=i; } @Override public void onClick(View
v) { mPager.setCurrentItem(index); } } //
初始化标签卡的位移像素 public void InitTextBar(){ barText
= (TextView) super.findViewById(R.id.cursor); Display
display = getWindow().getWindowManager().getDefaultDisplay(); //
得到屏幕的宽度 DisplayMetrics
metrics = new DisplayMetrics(); display.getMetrics(metrics); //
1/3得到屏幕 int tabLineLength
= metrics.widthPixels / 4; LayoutParams
lp = (LayoutParams) barText.getLayoutParams(); lp.width
= tabLineLength; barText.setLayoutParams(lp); } //
初始化ViewPager public void InitViewPager(){ mPager
= (ViewPager)findViewById(R.id.viewpager); fragmentList
= new ArrayList<Fragment>(); Fragment
btFragment= new ButtonFragment(); Fragment
secondFragment = TestFragment.newInstance("this
is second fragment"); Fragment
thirdFragment = TestFragment.newInstance("this
is third fragment"); Fragment
fourthFragment = TestFragment.newInstance("this
is fourth fragment"); fragmentList.add(btFragment); fragmentList.add(secondFragment); fragmentList.add(thirdFragment); fragmentList.add(fourthFragment); //给ViewPager设置适配器 mPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager(),
fragmentList)); mPager.setCurrentItem(0);//设置当前显示标签页为第一页 mPager.setOnPageChangeListener(new MyOnPageChangeListener());//页面变化时的监听器 } public class MyOnPageChangeListener implements OnPageChangeListener{ public void onPageScrolled(int arg0, float arg1, int arg2)
{ //取得该控件的实例 LinearLayout.LayoutParams
ll = (android.widget.LinearLayout.LayoutParams) barText .getLayoutParams(); if(currIndex
== arg0){ ll.leftMargin
= (int)
(currIndex * barText.getWidth() + arg1 *
barText.getWidth()); }else if(currIndex
> arg0){ ll.leftMargin
= (int)
(currIndex * barText.getWidth() - (1 -
arg1)* barText.getWidth()); } barText.setLayoutParams(ll); } public void onPageScrollStateChanged(int arg0)
{ } public void onPageSelected(int arg0)
{ currIndex
= arg0; int i
= currIndex + 1; Toast.makeText(MainActivity.this, "您选择了第"+i+"个页卡",
Toast.LENGTH_SHORT).show(); } } } |
自定义的FragmentPagerAdapter要继承FragmentPagerAdapter
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public class MyFragmentPagerAdapter extends FragmentPagerAdapter
{ ArrayList<Fragment>
list; public MyFragmentPagerAdapter(FragmentManager
fm, ArrayList<Fragment> list) { super(fm); this.list
= list; } public int getCount()
{ return list.size(); } public Fragment
getItem(int arg0)
{ return list.get(arg0); }} |
Fragment加载布局文件实现viewpager中单个页面的内容。
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public class ButtonFragment extends Fragment
{ Button
myButton; public View
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle
savedInstanceState) { View
rootView = inflater.inflate(R.layout.guide_1, container, false);//
关联布局文件 myButton
= (Button) rootView.findViewById(R.id.mybutton);//
根据rootView找到button myButton.setOnClickListener(new View.OnClickListener()
{ public void onClick(View
v) { Toast.makeText(ButtonFragment.this.getActivity(), "button
is click!",
Toast.LENGTH_SHORT).show(); } }); return rootView; }} |
可滑动的顶部导航页ViewPager和Fragment的使用
标签：android android应用 布局 fragment viewpager
原文地址：http://blog.csdn.net/itwuchen/article/details/43086677
