Wow, thanks Mark, you are absolutely not just a common guy!!!
On May 29, 2:09 am, Mark Murphy <mmur...@commonsware.com> wrote:
> Jeruliu wrote:
> > I'm building a dialog including seekbar but i can't locate the seekbar
> > by findViewById, it only returns nullpoint.
>
> > My code:
> > Context mContext = this;
> > LayoutInflater inflater = (LayoutInflater)
> > mContext.getSystemService(LAYOUT_INFLATER_SERVICE);
> > View layout = inflater.inflate(R.layout.brightness,
> > (ViewGroup)
> > findViewById(R.id.layout_root));
>
> > builder = new AlertDialog.Builder(mContext);
> > builder.setView(layout);
> > builder.setTitle("Brightness");
> > builder.setPositiveButton("Ok", new
> > DialogInterface.OnClickListener() {
> > public void onClick(DialogInterface dialog, int
> > whichButton) {
> > /////////// The seekBar here is a null point however?
> > SeekBar seekBar = (SeekBar)
> > findViewById(R.id.seekbar);
> > int progress = seekBar.getProgress();
> > Log.v(TAG, "=====++++ progress is : " +
> > progress);
> > }
> > });
>
> > And my layouy brightness.xml
> > <?xml version="1.0" encoding="utf-8"?>
> > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/
> > android"
> > android:id="@+id/layout_root" android:orientation="vertical"
> > android:layout_width="fill_parent"
> > android:layout_height="fill_parent" android:gravity="center">
> > <ImageView android:id="@+id/brightness_level_icon"
> > android:layout_width="fill_parent"
> > android:layout_height="fill_parent"
> > android:src="@drawable/
> > brightness_level_icon"
> > />
> > <SeekBar android:id="@+id/seekbar" android:layout_width="fill_parent"
> > android:layout_height="wrap_content" android:max="255"
> > android:progress="125" />
> > </LinearLayout>
>
> > Any hints from your experts？thanks.
>
> You are calling findViewById() on your activity. Your activity
> presumably does not have a SeekBar named R.id.seekbar.
>
> Try calling layout.findViewById(R.id.seekbar) instead.
>
> --
> Mark Murphy (a Commons
> Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy
>
> Android App Developer Books:http://commonsware.com/books
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
