I am using a table layout in a screen. i need to have both horizontal and vertical scrolls. By default i am able to get vertical scroll in the view but horizontal scroll is not working. I am using android SDK 1.5 r3
Ihv already tried android:scrollbars = "horizontal". I hv read on some forums that in cupcake update horizontal scroll is possible in andorid.
View 3 Replies
I am having a Table layout which has 3 columns defined. But due to large Text in the second column, the content is going off the screen. So i was trying to place a horizontal Scrollbar. But was unable to do.
I am using Android 1.5 as target.
XML code of the table layout
CODE:......................
I want to have a dynamic table, with rows added over time as a result of user interaction, using a TableLayout inside a ScrollView. This works fine, but when I want to scroll to the end of the table using fullScroll(), it always leaves out the last line; that is, it scrolls so that the one before the last one is visible. The last line is visible when scrolling manually, and the scrollbar is correct too.I'm of course open to suggestions as to how to make a better layout out of this; but I'm specifically interested in understanding why fullScroll() behaves that way. Should I give it a different parameter, or use something else altogether? Or does it do that because the newly added line isn't yet visible somehow? (if so, how can I solve that?) Or did I miss some other obvious thing?The following code replicates the problem: TestActivity.java:
package com.example.android.tests;
import java.util.Random;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ScrollView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
public class TestActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
((Button) findViewById(R.id.AddRow)).setOnClickListener(new View.OnClickListener() { public void onClick(View v) {
Random rnd = new Random();
TableRow nr = new TableRow(v.getContext());
for (int c=0; c<3; c++) {
TextView nv = new TextView(v.getContext());
nv.setText(Integer.toString(rnd.nextInt(20)-10));
nr.addView(nv);
}((TableLayout) findViewById(R.id.Table)).addView(nr);
// Scrolls to line before last - why?
((ScrollView) findViewById(R.id.TableScroller)).fullScroll(View.FOCUS_DOWN);
}main.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:text="Add Row"
android:id="@+id/AddRow"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" />
<ScrollView
android:id="@+id/TableScroller"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@id/AddRow"
android:layout_alignParentTop="true" >
<TableLayout
android:id="@+id/Table"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:stretchColumns="0,1,2" />
</ScrollView>
</RelativeLayout>
Edit: for reference, I implemented Romain Guy's solution as follows:In TestActivity.java, replace:
// Scrolls to line before last - why?
((ScrollView) findViewById(R.id.TableScroller)).fullScroll(View.FOCUS_DOWN);
// Enqueue the scrolling to happen after the new row has been layout
((ScrollView) findViewById(R.id.TableScroller)).post(new Runnable() {
public void run() {
((ScrollView) findViewById(R.id.TableScroller)).fullScroll(View.FOCUS_DOWN);
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tr.setLayoutParams(lp);
TextView tvLeft = new TextView(this);
tvLeft.setLayoutParams(lp);......................
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I have defined the layout which you can see at the end of this message. I do not understand, why the button is not displayed. If I move the button to the top that the rendering works.
CODE:......................
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View 2 Replies View RelatedI am using a table layout in a screen. i need to have both horizontal and vertical scrolls. By default i am able to get vertical scroll in the view but horizontal scroll is not working.
I am using android SDK 1.5 r3 i hv already tried android:scrollbars = "horizontal". i hv read on some forums that in cupcake update horizontal scroll is possible in andorid.
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< menu1 | menu2 | menu3 >
-----------------------------------------
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http://202.131.244.11/demo/VerticalAndHorizontalScrolls.PNG
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<TableLayout
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android:stretchColumns="0">
<TableRow
android:background="#9932cc"
android:minHeight="40px"
android:orientation="horizontal">...........
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TextView Button
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I have played around a bit with the xml files for creating layouts and can't explain the behaviour of layout_weight when using it in a LinearLayout that has orientation="vertical"
When creating a layout that is horizontal everything follows the documentation, that a child would get more space if it's has the highest value.
But the following code for vertical orientation, give more space to the item with lowest weight.
CODE:..........
And the question is: Is this a bug or just a feature that maybe need more documentation?