Databases
StackOverflow2013
Postsdbo
POHow do I use instantiateItem correctly with a mixture of view and layouts objects?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow do I use instantiateItem correctly with a mixture of view and layouts objects?
    primarykey
    data
    text
    <p>I'm trying to get this code to work:</p> <pre><code> @Override public Object instantiateItem(ViewGroup collection, int position) { View v = null; if( 0 == position ) { String data = "&lt;html&gt;&lt;body&gt;Hi there&lt;/body&gt;&lt;html&gt;"; WebView wv = (WebView) findViewById(R.id.webView); wv.loadData(data, "text/html", null); v = wv; } else { LayoutInflater vi = (LayoutInflater) cxt.getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = vi.inflate(R.layout.editor, null); } collection.addView(v,0); return v; } </code></pre> <p>I'm basically mimicking this article here to build a horizontally swiping view: <a href="http://android-developers.blogspot.com/2011/08/horizontal-view-swiping-with-viewpager.html" rel="nofollow">http://android-developers.blogspot.com/2011/08/horizontal-view-swiping-with-viewpager.html</a></p> <p>I get a crash when I use this code. I gather I am not doing things correctly by trying to insert a layout into the ViewGroup. Any suggestions? </p> <pre><code>03-20 14:49:55.037: ERROR/AndroidRuntime(25990): FATAL EXCEPTION: main java.lang.NullPointerException at com.EditorHyde.app.b.a(Unknown Source) at android.support.v4.view.ViewPager.a(Unknown Source) at android.support.v4.view.ViewPager.a(Unknown Source) at android.support.v4.view.ViewPager.c(Unknown Source) at android.support.v4.view.ViewPager.onMeasure(Unknown Source) at android.view.View.measure(View.java:15518) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404) at android.widget.LinearLayout.measureVertical(LinearLayout.java:695) at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) at android.view.View.measure(View.java:15518) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) at android.view.View.measure(View.java:15518) at android.widget.LinearLayout.measureVertical(LinearLayout.java:847) at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) at android.view.View.measure(View.java:15518) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2176) at android.view.View.measure(View.java:15518) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) at android.view.Choreographer.doCallbacks(Choreographer.java:562) at android.view.Choreographer.doFrame(Choreographer.java:532) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) at android.os.Handler.handleCallback(Handler.java:725) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:5041) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) at dalvik.system.NativeStart.main(Native Method) </code></pre>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USxrd
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload