Android 如何垂直滚动Viewpager
我无法垂直滚动查看寻呼机。在子布局中使用NestedScrollView时,页面将变为空白。我尝试了许多解决方案,但都失败了 这是我的主要片段nav_swipe.xmlAndroid 如何垂直滚动Viewpager,android,scroll,android-viewpager,android-scrollview,android-nestedscrollview,Android,Scroll,Android Viewpager,Android Scrollview,Android Nestedscrollview,我无法垂直滚动查看寻呼机。在子布局中使用NestedScrollView时,页面将变为空白。我尝试了许多解决方案,但都失败了 这是我的主要片段nav_swipe.xml <?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" >
<android.support.v4.view.PagerTitleStrip
android:id="@+id/pager_title_strip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:background="#33b5e5"
android:paddingBottom="4dp"
android:paddingTop="4dp"
android:textColor="#fff" />
</android.support.v4.view.ViewPager>
</android.support.design.widget.CoordinatorLayout>
}
这是MyPagerAdapter.java
public class MyPagerAdapter extends FragmentStatePagerAdapter {
private Context context;
private String[] tabTitlesArray = null;
public MyPagerAdapter(FragmentManager fm, Context context) {
super(fm);
tabTitlesArray = context.getResources().getStringArray(R.array.tab_titles);
this.context= context;
}
@Override
public Fragment getItem(int i) {
Fragment fragment = new AFragment();
Bundle args = new Bundle();
args.putString(AFragment.ARG_OBJECT, tabTitlesArray[i]);
fragment.setArguments(args);
return fragment;
}
@Override
public int getCount() {
return tabTitlesArray.length;
}
@Override
public CharSequence getPageTitle(int position) {
//return tabTitleArray[position];
return "OBJECT " + (position + 1);
}
}
这是affragment.java
public class AFragment extends Fragment {
public static final String ARG_OBJECT = "object";
public AFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_a, container, false);
Bundle args = getArguments();
((TextView) rootView.findViewById(R.id.text1)).setText(args.getString(ARG_OBJECT));
return rootView;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
}
请尝试以下代码:
编辑布局
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"/>
</LinearLayout>
</ScrollView>
{
}请使用ViewPager.PageTransformer给人垂直ViewPager的错觉。实现垂直滚动而不是水平滚动
/**
* Uses a combination of a PageTransformer and swapping X & Y coordinates
* of touch events to create the illusion of a vertically scrolling ViewPager.
*
* Requires API 11+
*
*/
public class VerticalViewPager extends ViewPager {
public VerticalViewPager(Context context) {
super(context);
initiate();
}
public VerticalViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
initiate();
}
private void initiate() {
// The majority of the magic happens here
setPageTransformer(true, new VerticalPageTransformer());
// The easiest way to get rid of the overscroll drawing that happens on the left and right
setOverScrollMode(OVER_SCROLL_NEVER);
}
private class VerticalPageTransformer implements ViewPager.PageTransformer {
@Override
public void transformPage(View view, float position) {
if (position < -1) { // [-Infinity,-1)
// This page is way off-screen to the left.
view.setAlpha(0);
} else if (position <= 1) { // [-1,1]
view.setAlpha(1);
// Counteract the default slide transition
view.setTranslationX(view.getWidth() * -position);
//set Y position to swipe in from top
float yPosition = position * view.getHeight();
view.setTranslationY(yPosition);
} else { // (1,+Infinity]
// This page is way off-screen to the right.
view.setAlpha(0);
}
}
}
/**
* Swaps the X and Y coordinates of your touch event.
*/
private MotionEvent swapXY(MotionEvent ev) {
float width = getWidth();
float height = getHeight();
float newX = (ev.getY() / height) * width;
float newY = (ev.getX() / width) * height;
ev.setLocation(newX, newY);
return ev;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev){
boolean intercepted = super.onInterceptTouchEvent(swapXY(ev));
swapXY(ev); // return touch coordinates to original reference frame for any child views
return intercepted;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
return super.onTouchEvent(swapXY(ev));
}
}
/**
*使用PageTransformer和交换X&Y坐标的组合
*通过触摸事件创建垂直滚动的ViewPager的幻觉。
*
*需要API 11+
*
*/
公共类VerticalViewPage扩展了ViewPager{
公共VerticalViewPage(上下文){
超级(上下文);
发起();
}
公共VerticalViewPage(上下文、属性集属性){
超级(上下文,attrs);
发起();
}
私有void initiate(){
//大部分魔法都发生在这里
setPageTransformer(true,新的VerticalPageTransformer());
//消除发生在左侧和右侧的过卷图形的最简单方法
设置超滚动模式(超滚动模式);
}
私有类VerticalPageTransformer实现ViewPager.PageTransformer{
@凌驾
公共页面(视图、浮动位置){
if(位置<-1){/[-无穷大,-1)
//这个页面在屏幕的左边。
视图。setAlpha(0);
}否则如果(位置当我使用您的解决方案时,Viewpager页面变为空白。结果相同。没有更改。现在我添加了更多。请检查。当我添加NestedScrollView时,页面变为空白。如果我删除NestedScrollView,则内容显示和静态。我向您发布了我项目中的代码,并对其进行了测试。滚动视图对我有效。请使用主活动的布局。)我给了你/!\I更新了片段的布局。使用我给你的代码创建片段适配器复制我给你的主要代码让我知道,但它应该可以工作我无法找出问题所在。一些页面显示和滚动,一些使用ScrollView时为空。即使使用我给的代码,这也无法工作你?这个对我很好用…你确定你没有忘记任何行吗?使用。你能分享一下你是如何在fragment_a.xml
@Mirwise Khan Child fragment layout is“fragment_a.xml”中使用ScrollView
的吗
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"/>
</LinearLayout>
</ScrollView>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:id="@+id/main_layout"
android:layout_height="match_parent"
tools:context=".com.example.thomas.activity.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="@+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabLayout
android:id="@+id/main_tabs"
android:layout_width="match_parent"
app:tabIndicatorColor="@android:color/white"
app:tabSelectedTextColor="@android:color/white"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/main_tabs_pager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/appBarLayout">
</android.support.v4.view.ViewPager>
public class FragmentAdaptater extends FragmentPagerAdapter
private final List<Fragment> lstFragment = new ArrayList<>();
private final List<String> lstTitles = new ArrayList<>();
public FragmentAdaptater(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int i) {
return lstFragment.get(i);
}
@Nullable
@Override
public CharSequence getPageTitle(int position) {
return lstTitles.get(position);
}
@Override
public int getCount() {
return lstTitles.size();
}
public void AddFragment (Fragment fragment , String title)
{
lstFragment.add(fragment);
lstTitles.add(title);
}
public class MainActivity extends AppCompatActivity {
private Toolbar mToolbar;
private FragmentPagerAdapter fragmentadaptater2;
private ViewPager mviewpager;
private TabLayout mtablayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_2);
mviewpager = (ViewPager) findViewById(R.id.main_tabs_pager);
mToolbar = (Toolbar) findViewById(R.id.main_page_toolbar);
mtablayout = (TabLayout) findViewById(R.id.main_tabs);
setSupportActionBar(mToolbar);
fragmentadaptater2 = new FragmentAdaptater(getSupportFragmentManager());
((FragmentAdaptater) fragmentadaptater2).AddFragment(new YOURFRAGMENT(),"YOUR FRAGMENT NAME");
((FragmentAdaptater) fragmentadaptater2).AddFragment(new YOURFRAGMENT(),"YOUR FRAGMENT NAME");
((FragmentAdaptater) fragmentadaptater2).AddFragment(new YOURFRAGMENT(),"YOUR FRAGMENT NAME");
mviewpager.setAdapter(fragmentadaptater2);
mtablayout = (TabLayout) findViewById(R.id.main_tabs);
mtablayout.setupWithViewPager(mviewpager);
/**
* Uses a combination of a PageTransformer and swapping X & Y coordinates
* of touch events to create the illusion of a vertically scrolling ViewPager.
*
* Requires API 11+
*
*/
public class VerticalViewPager extends ViewPager {
public VerticalViewPager(Context context) {
super(context);
initiate();
}
public VerticalViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
initiate();
}
private void initiate() {
// The majority of the magic happens here
setPageTransformer(true, new VerticalPageTransformer());
// The easiest way to get rid of the overscroll drawing that happens on the left and right
setOverScrollMode(OVER_SCROLL_NEVER);
}
private class VerticalPageTransformer implements ViewPager.PageTransformer {
@Override
public void transformPage(View view, float position) {
if (position < -1) { // [-Infinity,-1)
// This page is way off-screen to the left.
view.setAlpha(0);
} else if (position <= 1) { // [-1,1]
view.setAlpha(1);
// Counteract the default slide transition
view.setTranslationX(view.getWidth() * -position);
//set Y position to swipe in from top
float yPosition = position * view.getHeight();
view.setTranslationY(yPosition);
} else { // (1,+Infinity]
// This page is way off-screen to the right.
view.setAlpha(0);
}
}
}
/**
* Swaps the X and Y coordinates of your touch event.
*/
private MotionEvent swapXY(MotionEvent ev) {
float width = getWidth();
float height = getHeight();
float newX = (ev.getY() / height) * width;
float newY = (ev.getX() / width) * height;
ev.setLocation(newX, newY);
return ev;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev){
boolean intercepted = super.onInterceptTouchEvent(swapXY(ev));
swapXY(ev); // return touch coordinates to original reference frame for any child views
return intercepted;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
return super.onTouchEvent(swapXY(ev));
}
}