Question about tags inside tags.

LW · by LW » Wed Jan 02, 2008 11:56 am

For this example ( a ticker is a String wich move from right to left, exactly like at wall street :
AAPL +0.12% IBM -0.25% etc... )

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    //XML file
 
    <Ticker id="@+id/ticker"
 
        android:layout_width="fill_parent"
 
        android:layout_height="wrap_content"
 
        android:layout_marginTop="20dip">
 
        <TextView id="@+id/tickerText"
 
            android:layout_width="wrap_content"
 
            android:layout_height="fill_parent"
 
            android:text="@string/ticker_1_tickerText_text"/>
 
    </Ticker>
 
Parsed in 0.032 seconds,  using GeSHi 1.0.8.4

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    //java file
 
    mTickerText = (TextView) findViewById(R.id.tickerText);
 
    mUserText = (EditText) findViewById(R.id.userText);
 
    mTickerText.setText(mUserText.getText());
 
Parsed in 0.030 seconds,  using GeSHi 1.0.8.4

I would like to know how am i supposed to know that i have to put :
<TextView /> inside <Ticker /> ??
I'm asking this because i thought the " mTickerText.setText(mUserText.getText()); " line already took care about this.

if you do:

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    //XML file
 
    <Ticker id="@+id/ticker"
 
        android:layout_width="fill_parent"
 
        android:layout_height="wrap_content"
 
        android:layout_marginTop="20dip">
 
    </Ticker>
 
    <TextView id="@+id/tickerText"
 
            android:layout_width="wrap_content"
 
            android:layout_height="fill_parent"
 
            android:text="@string/ticker_1_tickerText_text"/>
 
Parsed in 0.035 seconds,  using GeSHi 1.0.8.4

with the " mTickerText.setText(mUserText.getText()); " line, it doesn't work...

It's ok for this, coz now i know i have to put <TextView /> inside <Ticker />, but what if there's that kind of problem with other java class for the xml file?How would i know?

plusminus · by **plusminus** » Thu Jan 03, 2008 3:11 pm

Hello LW,

the Ticker-Class extends a Layout and therefore you have to place the child-Views between the opening and the closing tag. The Ticker-Class will automatically handle the scrolling/ticking of all its child-views.
[align=center]

[/align]

Regards,
plusminus

Question about tags inside tags.

Question about tags inside tags.

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