CODEWITHSUNDEEP
javaandroidscrollview
anon
anon

Reputation:

ScrollView alawys scrolling to the bottom

I defined a scrollview with a texteedit in my layout:

 <ScrollView android:fillViewport="true"
     android:layout_marginBottom="50dip"
     android:id="@+id/start_scroller"
     android:layout_height="fill_parent"
     android:layout_width="fill_parent"
     android:fadingEdge="none">
 <TextView  
    android:id="@+id/text"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" >
 </TextView>
 </ScrollView>

I add text to this ScrollView with the following method:

public void writeToLogView(String textMsg) {
   if (text.getText().equals("")) {
       text.append(textMsg);
   } else {
    text.append("\n" + textMsg);
    scroller.scrollBy(0, 1000000);
   }
}

As you can see i append the text and try to scroll to the bottom of the ScrollView. Unfortunately this doesn't worked correctly. It scrolls down, but not always, and not always to the bottom. Any hints?

Upvotes: 14

Views: 15538

Answers (3)

X&#229;pplI&#39;-I0llwlg&#39;I -
X&#229;pplI&#39;-I0llwlg&#39;I -

Reputation: 22404

For those who are using Android Annotations, you can do it like this:

@ViewById
ScrollView myScrollView;

@AfterViews
protected void init() {
    scrollToEnd();
}

@UiThread(delay=200)
void scrollToEnd() {
    myScrollView.fullScroll(ScrollView.FOCUS_DOWN);
}

Upvotes: 0

MatejC
MatejC

Reputation: 2237

Or after change of view size in scrollView use:

scroller.post(new Runnable() { 
    public void run() { 
        scroller.fullScroll(ScrollView.FOCUS_DOWN); 
    } 
});

Upvotes: 30

Klarth
Klarth

Reputation: 2045

After appending the text, try using the dimensions of your TextView to calculate where you should scroll to, instead of some constant, like this:

scroller.post(new Runnable() {

    public void run() {
        scroller.scrollTo(text.getMeasuredWidth(), text.getMeasuredHeight());
    }
});

Upvotes: 7

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