如何水平内ViewPager滚动的WebView？ [英] How to scroll webview horizontally inside ViewPager?
本文介绍了如何水平内ViewPager滚动的WebView？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个viewpager，其中每个页面都有显示不同的WebView。此的WebView应允许horizontall双击自动滚屏，我要刷到下一页当滚动完成。
I have a viewpager, where each page has to show a different WebView. This WebView should allow horizontall scrool, and I want to swipe to next page when the scroll finishes.
我搜索，并找到了一些解决方案，但没有我没有解决这个问题。我有一个CustomViewPager和CustomWebView为试图处理滚动事件。
I've searched, and find some solutions, but nothing I did resolve this issue. I have a CustomViewPager and a CustomWebView for trying to handle scroll events.
这是我的code：
自定义ViewPager
public class WebViewPager extends ViewPager {
public WebViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
if (v instanceof ExtendedWebView) {
return ((ExtendedWebView) v).canScrollHor(-dx);
} else {
return super.canScroll(v, checkV, dx, x, y);
}
}
}
自定义的WebView
public class ExtendedWebView extends WebView {
public ExtendedWebView(Context context) {
super(context);
}
public ExtendedWebView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public boolean canScrollHor(int direction) {
final int offset = computeHorizontalScrollOffset();
final int range = computeHorizontalScrollRange() - computeHorizontalScrollExtent();
if (range == 0)
return false;
if (direction < 0) {
return offset > 0;
} else {
return offset < range - 1;
}
}
}
ScreenSlidePagerActivity
public class ScreenSlidePagerActivity extends FragmentActivity {
class MyPageAdapter extends FragmentPagerAdapter {
private List<Fragment> fragments;
private List<String> titles;
public MyPageAdapter(FragmentManager fm) {
super(fm);
this.fragments = new ArrayList<Fragment>();
this.titles = new ArrayList<String>();
}
public void addItem(String url, String title) {
Fragment myFragment = new WebViewFragment();
Bundle args = new Bundle();
args.putString("url", url);
myFragment.setArguments(args);
this.fragments.add(myFragment);
this.titles.add(title);
}
@Override
public Fragment getItem(int position) {
return this.fragments.get(position);
}
public CharSequence getPageTitle(int position) {
return this.titles.get(position);
}
@Override
public int getCount() {
return this.fragments.size();
}
}
private MyPageAdapter pageAdapter = null;
private WebViewPager pager = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pageAdapter = new MyPageAdapter(getSupportFragmentManager());
pageAdapter.addItem("url1", "WebView 1");
pageAdapter.addItem("url2", "WebView 2");
pageAdapter.addItem("url3", "WebView 3");
pager = (WebViewPager) findViewById(R.id.pager);
pager.setOffscreenPageLimit(pageAdapter.getCount() - 1);
pager.setAdapter(pageAdapter);
}
}
活动的布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
android:paddingBottom="0dp"
android:paddingLeft="0dp"
android:paddingRight="0dp"
android:paddingTop="0dp"
tools:context=".MainActivity" >
<com.example.viewpagerexample.WebViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="6dp"
android:paddingTop="0dp" >
<android.support.v4.view.PagerTabStrip
android:id="@+id/pager_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:background="#fff"
android:paddingBottom="0dp"
android:paddingLeft="0dp"
android:paddingRight="0dp"
android:paddingTop="0dp"
android:textColor="#000" />
</com.example.viewpagerexample.WebViewPager>
</LinearLayout>
更新 该接受的答案才做，如果我把这个参数在我的网页CSS：
UPDATE The accepted answer only worked if I put this parameter in the CSS of my web page:
显示：表;
显然，如果没有这种参数的web视图是不能够计算出其含量的宽度。
Apparently, without this parameter the WebView is not able to calculate the width of its content.
推荐答案
设置以下属性为您的WebView
Set following properties to your WebView
<your.package.name.MyWebView
android:id="@+id/webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
mWebView.setInitialScale(120);
mWebView.setScrollContainer(true);
mWebView.bringToFront();
mWebView.setScrollbarFadingEnabled(true);
mWebView.setVerticalScrollBarEnabled(true);
mWebView.setHorizontalScrollBarEnabled(true);
mWebView.getSettings().setBuiltInZoomControls(true);
mWebView.getSettings().setJavaScriptEnabled(false);
mWebView.getSettings().setUseWideViewPort(true);
mWebView.getSettings().setUserAgentString("Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A543a Safari/419.3");
1。实现自定义ViewPager实例是这样的：
import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
public class CustomViewPager extends ViewPager {
private MagazineWebView_WithoutFlipWebView mCurrentPageWebView_; //custom webview
public CustomViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if (Constants.LOGGING) {
Log.v(Constants.LOG_OEAMTC_APP, "CustomViewPager - onInterceptTouchEvent");
}
// if view zoomed out (view starts at 33.12... scale level) ... allow
// zoom within webview, otherwise disallow (allow viewpager to change
// view)
if (mCurrentPageWebView_ != null && (mCurrentPageWebView_.getScale() * 100) > 34) {
Log.v(Constants.LOG_OEAMTC_APP, "CustomViewPager - intrcepted: " + String.valueOf((mCurrentPageWebView_.getScale() * > 100)));
this.requestDisallowInterceptTouchEvent(true);
}
else {
if (mCurrentPageWebView_ != null) {
Log.v(Constants.LOG_OEAMTC_APP,
"CustomViewPager - not intrcepted: " + String.valueOf(mCurrentPageWebView_.getScale() * 100));
}
this.requestDisallowInterceptTouchEvent(false);
}
return super.onInterceptTouchEvent(event);
}
public MagazineWebView_WithoutFlipWebView getCurrentPageWebView() {
return mCurrentPageWebView_;
}
public void setCurrentPageWebView(MagazineWebView_WithoutFlipWebView currentPageWebView) {
mCurrentPageWebView_ = currentPageWebView;
}
}
2。在主（ViewPager）活动添加以下行到视图寻呼机
mViewPager_ = new AwesomePagerAdapter();
viewpapgerInLayout = (CustomViewPager) findViewById(R.id.awesomepager);
viewpapgerInLayout.setAdapter(mViewPager_);
viewpapgerInLayout.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int position) {
viewpapgerInLayout.setCurrentPageWebView(mLstPagesWebviews_.get(position));
}
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
3。最后，运行它：=），如果缩放级别是初始变焦 改变是允许的网页，其他所有的时间，你可以浏览您的Web视图
3. finally, run it :=) if the zoom level is at initial zoom, changes pages is allowed, all the other time you can navigate your web view
另外，您还可以扩展您的WebView但不能两者都完全
@Override
public boolean onInterceptTouchEvent(MotionEvent p_event)
{
return true;
}
@Override
public boolean onTouchEvent(MotionEvent p_event)
{
if (p_event.getAction() == MotionEvent.ACTION_MOVE && getParent() != null)
{
getParent().requestDisallowInterceptTouchEvent(true);
}
return super.onTouchEvent(p_event);
}
这篇关于如何水平内ViewPager滚动的WebView？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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