Android Coding Questions

Log into wiki, find this question (index) page, and add a question beginning the this page, after first headline.

  ==== My Problem ? ====
  How to get functionality X to work ?

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:orientation="vertical"
         android:layout_width="fill_parent" 
         android:layout_height="fill_parent"
         android:paddingLeft="8dp"
         android:paddingRight="8dp">
 
    <ListView android:id="@id/android:list"
               android:layout_width="fill_parent" 
               android:layout_height="fill_parent"
               android:layout_weight="1"
               android:drawSelectorOnTop="false"/>
 
 	<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/AnotherTextView"></TextView>
	
</LinearLayout>

  startActivity(new Intent(this, MyAnotherActivity.class));

+ Don't forget to add lines in AndroidManifest.xml

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:scrollbars="vertical" android:layout_height="fill_parent"
	android:layout_width="fill_parent" android:stretchColumns="*">
	<TableRow android:id="@+id/tablerow1">
		<EditText android:text="1." android:id="@+id/EditText01"
			android:editable="false"></EditText>
		<EditText android:id="@+id/EditText11"></EditText>
		<EditText android:id="@+id/EditText21"></EditText>
	</TableRow>
</TableLayout>

For eclipse you need to use sun java packages (gcc gjc java is installed by default but it does not seem to work well)

• https://help.ubuntu.com/community/Java
• get JDK (SDK) package as well

Ubuntu 9.10 repositories have Eclipse 3.5.1. It does not work with Android SDK. Get newer Eclipse. Version 3.5.2 seem to work.

• http://www.eclipse.org ⇒ Download ⇒ Eclipse for Java (or Java EE (not nessessary)).
• Extract it to your self installed software place (eg. /opt) and link eclipse start program to some place in your PATH.

Follow general android install instructions.

To use XmlSerializer is one option to save XML into readable form (string or file).

See the following link Working with XML on Android if that is helpful.

private String writeXml(List<Message> messages){
    XmlSerializer serializer = Xml.newSerializer();
    StringWriter writer = new StringWriter();
    try {
        serializer.setOutput(writer);
        serializer.startDocument("UTF-8", true);
        serializer.startTag("", "messages");
        serializer.attribute("", "number", String.valueOf(messages.size()));
        for (Message msg: messages){
            serializer.startTag("", "message");
            serializer.attribute("", "date", msg.getDate());
            serializer.startTag("", "title");
            serializer.text(msg.getTitle());
            serializer.endTag("", "title");
            serializer.startTag("", "url");
            serializer.text(msg.getLink().toExternalForm());
            serializer.endTag("", "url");
            serializer.startTag("", "body");
            serializer.text(msg.getDescription());
            serializer.endTag("", "body");
            serializer.endTag("", "message");
        }
        serializer.endTag("", "messages");
        serializer.endDocument();
        return writer.toString();
    } catch (Exception e) {
        throw new RuntimeException(e);
    } 
}

Just write a solution text into section, after question.

If solution is bigger that one paragraph size (having eg. couple screenshots), it is good idea document solution into separate page.

  Solution in [[separate page]]