Gabi Rotaru Gabi Rotaru - 2 months ago 10
Android Question

Draw custom line between two elements in TableLayout Android

I have an activity with events organised in a timeline. But it looks ugly.

enter image description here

I want to design a more beautiful timeline like this one.
enter image description here

Is there any simple way or a library to draw lines between elements like in my example?

<ScrollView
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_below="@+id/text_data"
android:layout_above="@+id/button_trimite"
android:id="@+id/scroll_timeline"
android:layout_marginBottom="7dp"

>
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/timelineTable"

>


</TableLayout>
</ScrollView>


This is my xml. But my TableLayout is generated dynamically because I need to sort my events.

for (final Event e : events) {
if(e.getDate().equals(dataComp)) {
//tablerow with event entry
final TableRow row = new TableRow(getActivity());

row.setLayoutParams(new TableRow.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));

if (indexForDrawable % 2 == 0)
row.setBackgroundResource(R.drawable.marcaj_event_albastru);
else
row.setBackgroundResource(R.drawable.marcaj_event_portocaliu);

TextView txtEvent = new TextView(getActivity());
txtEvent.setText(" "+ e.getHour() +"-"+e.getType()+"-"+e.getTitle());
txtEvent.setTextColor(Color.BLACK);
txtEvent.setTextSize(TypedValue.COMPLEX_UNIT_DIP, trEvent);
txtEvent.setTypeface(Typeface.create(tf, Typeface.BOLD));

row.addView(txtEvent);
row.setClickable(true);
final String date = e.getDate(), hour = e.getHour(), title = e.getTitle(),
type = e.getType(), descriere = e.getDescriere();
final int finalResource = resource;
final int finalIndexForDrawable = indexForDrawable;
row.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
row.setBackground(getActivity().getResources().getDrawable(finalResource));
showPopup2(date, hour, type, title, descriere, row, finalIndexForDrawable);
}
});


timelineTable.addView(row, new TableLayout.LayoutParams(
TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.WRAP_CONTENT));
indexForDrawable++;
}
else {
//tablerow with date
final TableRow row = new TableRow(getActivity());
row.setLayoutParams(new TableRow.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));
TextView txtEvent = new TextView(getActivity());


// txtEvent.setText("\n" + dataSplit1[0]+months.indexOf(dataSplit11));
txtEvent.setText("\n" + e.getDate().substring(0, 5));
txtEvent.setTextSize(TypedValue.COMPLEX_UNIT_DIP, trDate);
row.addView(txtEvent);
timelineTable.addView(row, new TableLayout.LayoutParams(
TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.WRAP_CONTENT));
dataComp = e.getDate();

//tablerow with event entry
final TableRow row3 = new TableRow(getActivity());
row3.setLayoutParams(new TableRow.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));

if (indexForDrawable % 2 == 0)
row3.setBackgroundResource(R.drawable.marcaj_event_albastru);
else
row3.setBackgroundResource(R.drawable.marcaj_event_portocaliu);
TextView txtEvent3 = new TextView(getActivity());

txtEvent3.setText(" "+ e.getHour() +"-"+e.getType()+"-"+e.getTitle());
txtEvent3.setTextColor(Color.BLACK);
txtEvent3.setTextSize(TypedValue.COMPLEX_UNIT_DIP, trEvent);
txtEvent3.setTypeface(Typeface.create(tf, Typeface.BOLD));
row3.addView(txtEvent3);
row3.setClickable(true);
final String date3 = e.getDate(), hour3 = e.getHour(), title3 = e.getTitle(),
type3 = e.getType(), descriere3 = e.getDescriere();

timelineTable.addView(row3, new TableLayout.LayoutParams(
TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.WRAP_CONTENT));
indexForDrawable++;
}

Answer

You may have to create your own custom adapter but I am using array adapter for your reference. Also giving item layout for list view, hope you will manage your code accordingly.

list-items

items.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical" >

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="match_parent" >

        <View
            android:layout_width="2dp"
            android:layout_height="match_parent"
            android:layout_centerVertical="true"
            android:layout_marginLeft="10dp"
            android:background="@android:color/black" />

        <View
            android:id="@+id/view1"
            android:layout_width="7dp"
            android:layout_height="7dp"
            android:layout_centerVertical="true"
            android:layout_marginLeft="7dp"
            android:background="@drawable/dot" />
    </RelativeLayout>

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:padding="20dp"
        android:textAppearance="?android:attr/textAppearanceMedium" />

</LinearLayout>

dot.xml which is a drawable

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval" >

<stroke
    android:width="1dp"
    android:color="@android:color/black" />

<solid android:color="@android:color/white" />

And in acivity you can use adapter like this:

list.setAdapter(new ArrayAdapter<String>(this, R.layout.item, R.id.textView1, items));

Hope this helped!