Using ViewPagerIndicator (viewpager) with multiple webview 's
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26-10-2019 - |
Question
I have this (noob?) question, but i just can't figure it out for many hours now.
I'm using ViewPagerIndicator (based on ViewPager). I need to have 3 pages, each of them containing a web view with specific URL..
How can I get this running? All my attempts end with a situaltion, when I have 3 pages with ONE and THE SAME url loaded. I tried many approaches - but my understanding of the code seems to lack some basics.
my code:
public class WebPagerProfileActivity extends Activity {
private ViewPager awesomePager;
private static int NUM_AWESOME_VIEWS = 3;
private Context context;
private ViewPagerAdapter awesomeAdapter;
LayoutInflater inflater ;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.webpagerprofile);
context = this;
inflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
awesomeAdapter = new ViewPagerAdapter(context);
awesomePager = (ViewPager) findViewById(R.id.viewpager);
TitlePageIndicator indicator = (TitlePageIndicator)findViewById( R.id.indicator );
awesomePager.setAdapter(awesomeAdapter);
indicator.setViewPager( awesomePager );}
and the adapter:
public class ViewPagerAdapter extends PagerAdapter implements TitleProvider
{ private static String[] titles = new String[]
{
"Profile",
"Friends",
"Statistics"
};
private final Context context;
public ViewPagerAdapter( Context context )
{
this.context = context;
}
//@Override
public String getTitle( int position )
{
return titles[position];
}
@Override
public int getCount()
{
return titles.length;
}
@Override
public Object instantiateItem( View pager, int position )
{
View layout = null;
switch (position) {
case 0: {
LayoutInflater mInflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layout = mInflater.inflate(R.layout.webprofile, null);
WebView mainContent = (WebView)layout.findViewById(R.id.webview);
mainContent.getSettings().setJavaScriptEnabled(true);
mainContent.getSettings().setJavaScriptEnabled(true);
mainContent.getSettings().setBuiltInZoomControls(true);
mainContent.requestFocusFromTouch();
mainContent.setWebViewClient(new WebViewClient());
mainContent.setWebChromeClient(new WebChromeClient());
mainContent.loadUrl("http://www.wp.pl");
}
case 1: { LayoutInflater mInflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layout = mInflater.inflate(R.layout.webfriends, null);
WebView mainContent = (WebView)layout.findViewById(R.id.webviewfriends);
mainContent.getSettings().setJavaScriptEnabled(true);
mainContent.getSettings().setJavaScriptEnabled(true);
mainContent.getSettings().setBuiltInZoomControls(true);
mainContent.requestFocusFromTouch();
mainContent.setWebViewClient(new WebViewClient());
mainContent.setWebChromeClient(new WebChromeClient());
mainContent.loadUrl("http://www.onet.pl");
}
case 2: { LayoutInflater mInflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layout = mInflater.inflate(R.layout.webstatistics, null);
WebView mainContent = (WebView)layout.findViewById(R.id.webviewstatistics);
mainContent.getSettings().setJavaScriptEnabled(true);
mainContent.getSettings().setJavaScriptEnabled(true);
mainContent.getSettings().setBuiltInZoomControls(true);
mainContent.requestFocusFromTouch();
mainContent.setWebViewClient(new WebViewClient());
mainContent.setWebChromeClient(new WebChromeClient());
mainContent.loadUrl("http://www.google.pl");
}
}
((ViewPager) pager).addView((View)layout,0);
return layout;
}
@Override
public void destroyItem( View pager, int position, Object view )
{
//((ViewPager)pager).removeView( (WebView)view );
}
@Override
public boolean isViewFromObject( View view, Object object )
{
return view.equals( object );
}
@Override
public void finishUpdate( View view ) {}
@Override
public void restoreState( Parcelable p, ClassLoader c ) {}
@Override
public Parcelable saveState() {
return null;
}
@Override
public void startUpdate( View view ) {}
}
Solution
You have no break
statements in your switch
statement. As such, you're falling through all of your cases, recreating your content up to 3 times until you hit the bottom and you finally show the one with "http://www.google.pl". Add break
like so:
switch (position) {
case 0: {
LayoutInflater mInflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layout = mInflater.inflate(R.layout.webprofile, null);
WebView mainContent = (WebView)layout.findViewById(R.id.webview);
mainContent.getSettings().setJavaScriptEnabled(true);
mainContent.getSettings().setJavaScriptEnabled(true);
mainContent.getSettings().setBuiltInZoomControls(true);
mainContent.requestFocusFromTouch();
mainContent.setWebViewClient(new WebViewClient());
mainContent.setWebChromeClient(new WebChromeClient());
mainContent.loadUrl("http://www.wp.pl");
}
break;
Etc.
OTHER TIPS
You're missing breaks in your switch. They're cascading down to the last one on all cases. You need to break after each one.