I have the following layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:background="#f00"
android:id="#+id/main_layout">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#0f0"
android:id="#+id/bed_list"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00f"
android:text="Howdy cowboy?"
android:textSize="50dip"
android:textColor="#fff"
android:id="#+id/textview"/>
</LinearLayout>
I want to add some textviews to R.id.bed_list (as if they were vertical tabs)
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.main);
LinearLayout bedList = (LinearLayout) findViewById(R.id.bed_list);
for (int i = 0; i < 12; i++) {
System.out.println("In the loop");
TextView textView = new TextView(this);
textView.setText("HJM-" + i);
textView.setWidth(LinearLayout.LayoutParams.WRAP_CONTENT);
textView.setHeight(LinearLayout.LayoutParams.WRAP_CONTENT);
bedList.addView(textView,i,
new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT));
}
}
So far, the code is run, the System.out.println messages in the loop appear at the console, but I only see the textview (R.id.textview). I wanted the list to appear at the left of the screen with the options calculated, but it does not work.
Further on, if I define a first textview in the label (so that there is some items at the very beginning and a space is reserved), I get to see that textview but the others (added from the program) do not appear either.
Your textview (R.id.textview) has a width of match_parent, effectively pushing your other views (the linearlayout) off screen. Instead you can give it a width of wrap_content and possibly a layout_weight of 1.
Related
I have a LinearLayout (horizontal) with several child TextViews inside. I have set fixed layout_width for both the LinearLayout and all the TextViews. When the total width of the children exceeds the width of the layout, it automatically shrink the children, making them narrower, which is not what I want. I want the layout to clip the children content and keep their width.
How can I achieve that?
For example: Let's say my LinearLayout is 200dp wide, and there are 4 TextView each 60dp wide. I want it to show the first three TextViews, and 1/3 of the 4th (60 + 60 + 60 + 20 = 200)
Thanks.
Use android:weightSum in LinearLayout
And use android:layout_width="0dp" and android:layout_weight="1" in TextView
Try this.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:weightSum="10">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:text="hello"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:text="hello"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:text="hello"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="hello"/>
</LinearLayout>
Also
You can change android:layout_width="match_parent" to android:layout_width="wrap_content" in TextView .
Edit
And you can use in your java code .
You can change the width or weight by yourself .
private LinearLayout mLinearLayout;
private int viewsCount = 4;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLinearLayout = (LinearLayout) findViewById(R.id.linearlayout);
for (int i = 0; i < viewsCount; i++) {
TextView textView = new TextView(this);
if(i == viewsCount-1){
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.WRAP_CONTENT, 1);
} else {
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.WRAP_CONTENT, 3);
}
mLinearLayout.addView(textView);
}
}
I am creating a TextView dynamically. Here, I am creating a mainLayout in which I have two child layout and I wan gave them weight.
Here, is my Layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:baselineAligned="false"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:orientation="horizontal">
<LinearLayout
android:id="#+id/Layout_second_overs"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="6"
android:orientation="vertical">
<!--Second textview overs-->
</LinearLayout>
<LinearLayout
android:id="#+id/Layout_second_balls"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:orientation="horizontal">
<!--Second textview balls--> //here i inflate 12 textview dynamically but not 12 seen on the device while i run the app.
</LinearLayout>
</LinearLayout>
</LinearLayout>
Code to create a 12 TextViews and put into layout.
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
for(int a = 0; a <= 12; a++)
{
TextView first = new TextView(getApplicationContext());
first.setLayoutParams(params);
first.setTextColor(Color.parseColor("#000000"));
first.setTextSize(12);
first.setGravity(Gravity.LEFT);
first.setPadding(5, 0, 5, 0);
first.setText("12");
layout_second_balls.addView(first); //This is my linear layout which id is Layout_second_balls
}
Problem is my all data are print into log but not visible on the device.
Please, help me to solve out this problem.
There are two issues
One is for the Layout Design related
Second based on the layout design and property you also need to
handle is while you are adding dynamically view into linear layout
Here what i have changed in Your xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:baselineAligned="false"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:orientation="horizontal">
<LinearLayout
android:id="#+id/Layout_second_overs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<!--Second textview overs-->
</LinearLayout>
<LinearLayout
android:id="#+id/Layout_second_balls"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1" android:background="#FF13C7FF"
android:orientation="horizontal">
</LinearLayout>
</LinearLayout>
</LinearLayout>
In Layout_second_overs linearlayout height , Width & weight is the issue.
& in Layout_second_balls linear layout you have used weight as 1 so you also required layout_height as 0dp if orientation is horizontal
Now below things i have changed in code
LinearLayout.LayoutParams params = new
LinearLayout.LayoutParams
(0, LinearLayout.LayoutParams.WRAP_CONTENT);
for(int a = 0;a<=12;a++)
{
TextView first = new TextView(getActivity());
first.setLayoutParams(params);
first.setTextColor(Color.parseColor("#000000"));
first.setTextSize(12);
params.weight = 1; /// Need to give weight if you want equal size of textview inside Linear
first.setGravity(Gravity.LEFT);
first.setPadding(5, 0, 5, 0);
first.setText("12");
Layout_second_balls.addView(first); //This is my linear layout which id is Layout_second_balls
}
above things are based on the question which you ask
Suggestion
Avoid adding dynamic view like you asked . prefer to use ListView, GridView, RecyclerView for this type of functionality.
Your layout_second_overs requires all of your screen space - so your layout_second_balls is moved out of your screen.
If you want to see your two LinearLayouts beside each other, you need to set the layout_width to "0dp":
//pseudo, simply change width to 0dp
<LinearLayout
android:layout_height="40dp"
.... >
<LinearLayout
android:layout_width="0dp"
android:layout_weight="6"/>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1"/>
</LinearLayout>
To replace this kind of loops you are supposed to use a RecyclerView. It is easy to use and responsive (since your list will be scrollable).
The things you have to remember while implementing a RecyclerView are to add an adapter and a LayoutManager to it.
For your example :
LayoutManager manager = new LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, true);
YourAdapter adapter = new YourAdapter([...]);
RecyclerView recyclerView = findViewById(R.id.your_recyclerview_here);
recyclerView.setLayoutManager(manager);
recyclerView.setAdapter(adapter);
If you need any advices for creating your adapter just ask.
You can use this line of code.
LinearLayout layout_second_balls=(LinearLayout) findViewById(R.id.Layout_second_balls);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
for(int a = 0;a<=12;a++)
{
TextView first = new TextView(getApplicationContext());
first.setLayoutParams(params);
first.setTextColor(Color.parseColor("#000000"));
first.setTextSize(12);
first.setGravity(Gravity.LEFT);
first.setPadding(5, 0, 5, 0);
first.setText("12");
layout_second_balls.addView(first);
}
i run this code in my emulator and i got this out put.
You have to assign index for a view while performing addview(view,index) set index for each textview created in for loop like layout_second_balls.addView(first,index);
Code should look like :
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
for(int a = 0; a <= 12; a++)
{
TextView first = new TextView(getApplicationContext());
first.setLayoutParams(params);
first.setTextColor(Color.parseColor("#000000"));
first.setTextSize(12);
first.setGravity(Gravity.LEFT);
first.setPadding(5, 0, 5, 0);
first.setText("12");
layout_second_balls.addView(first,a);
}
Hope it will work.
I am trying to create an Activity with a ScrollView in it. In the ScrollView will be "boxes" (sort of like a button) that is just a bit smaller than the width of the parent view and spaced slightly apart vertically. Because the boxes will have a couple different size text in a couple areas on them, I think I need to make the out of RelativeLayouts. (I would post a picture but can't with my reputation point so hopefully this makes sense).
I tried create an XML for the activity and than programatically adding the relativeviews. I got it to work, sort of, but am having trouble with the box spacing.
My test XML looks like this...
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<!-- scrolling section -->
<ScrollView
android:layout_width="fill_parent"
android:paddingTop="5dp"
android:layout_height="0dp"
android:layout_weight="1.30"
>
<LinearLayout
android:id="#+id/llScroll"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
</LinearLayout>
</ScrollView>
</LinearLayout>
My Activity looks like this...
public class TestActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
LinearLayout llAccts=(LinearLayout)findViewById(R.id.llScroll);
for (int i=1;i<20;i++) {
RelativeLayout rlView = new RelativeLayout(this);
rlView.setBackgroundColor(Color.BLUE);
TextView test=new TextView(this);
test.setText("Test #"+i);
test.setTextColor(Color.WHITE);
rlView.addView(test);
llAccts.addView(rlView,new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
}
}
}
I get the scrollable section, no problem. Problem is my blue "boxes" appear to be touching one another and I can't figure out how to make them look like buttons with padding left and right and between them. I tried
rlView.setPadding(20,20,20,20);
right after the setBackground color. All that appears to do is pad the text... not the RelativeViews.
Any suggestions no how to get this to work?
Thanks
===========
NEW INFORMATION:
Here is some additional information after following some suggestions and trial an error. I was also able to post a pic for easier reference.
===========
What I am trying to achieve, programmatically, is something that looks like this.
I achieved this example using the straight XML which looks like this...
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<!-- header: non-scrolling -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="UPDATE ALL"
android:id="#+id/btnUpdate" />
</RelativeLayout>
<!-- scrolling bottom pane -->
<ScrollView
android:layout_width="fill_parent"
android:paddingTop="5dp"
android:layout_height="0dp"
android:layout_weight="1.30"
>
<LinearLayout
android:id="#+id/llGroups"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
// individual groups start here - this section will be controlled by a database
// #1 group
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:background="#color/blue"
android:padding="5dp"
android:clickable="true"
android:id="#+id/grp1"
>
<TextView
android:id="#+id/text1"
android:text="Item #1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:id="#+id/leftext1"
android:text="123.00"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:textSize="30dp" />
</RelativeLayout>
// #2 group
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:background="#color/blue"
android:padding="5dp"
android:clickable="true"
android:id="#+id/grp2"
>
<TextView
android:id="#+id/text2"
android:text="Item #2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/leftext2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:id="#+id/leftext2"
android:text="456.00"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:textSize="30dp"
/>
</RelativeLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
I took this apart and created an XML file and and activity that will programmatically create the middle groups.
The modified XML (activity_main2) looks like this...
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<!-- header: non-scrolling -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="UPDATE ALL"
android:id="#+id/btnUpdate" />
</RelativeLayout>
<!-- scrolling bottom pane -->
<ScrollView
android:layout_width="fill_parent"
android:paddingTop="5dp"
android:layout_height="0dp"
android:layout_weight="1.30"
>
<LinearLayout
android:id="#+id/llGroups"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
</LinearLayout>
</ScrollView>
</LinearLayout>
I started rewriting my activity code to test some of the suggestions. It currently looks like this...
public class Main2Activity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
LinearLayout llGroups=(LinearLayout)findViewById(R.id.llGroups);
for (int i=1;i<20;i++) {
RelativeLayout rlView = new RelativeLayout(this);
rlView.setBackgroundColor(Color.BLUE);
RelativeLayout.LayoutParams rlp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
rlp.setMargins(10,10,10,0);
TextView test=new TextView(this);
test.setText("Test #"+i);
test.setTextColor(Color.WHITE);
rlView.addView(test);
// other textviews will go here
llGroups.addView(rlView,rlp);
}
}
}
This compiles and runs, but the setMargins is not working. My screen has the "UPDATE ALL" button at the top like it should and (19) "Text #" with a blue background, but they are full width and touching one another so it is a solid blue background.
I am getting close, but not sure how to get the margins to set correctly for the rlView relativeview (not the textviews).
Hopefully this helps explain what I am seeing now..
SOLUTION
After suggestions, and some trial and error... here is what I had to do to achieve the desired layout in case someone else is interested.
LinearLayout.LayoutParams llp = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
RelativeLayout.LayoutParams tvp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
RelativeLayout.LayoutParams tvp2 = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
LinearLayout mTvContainer = (LinearLayout) findViewById(R.id.llAccts);
for (int i = 0; i < 20; i++) {
LinearLayout ll = new LinearLayout(this);
ll.setBackgroundColor(Color.BLUE);
RelativeLayout rl = new RelativeLayout(this);
TextView tv = new TextView(this);
tv.setTextColor(Color.WHITE);
tv.setPadding(5, 5, 5, 5);
tv.setText("Test #" + i);
tvp.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
TextView tv2 = new TextView(this);
tv2.setTextColor(Color.WHITE);
tv2.setPadding(5, 5, 5, 5);
tv2.setText(String.valueOf(i));
tv2.setTextSize(30);
tvp2.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
rl.addView(tv, tvp);
rl.addView(tv2,tvp2);
ll.addView(rl);
llp.setMargins(32,16,32,16);
mTvContainer.addView(ll,llp);
}
}
For each entry in the FOR, I had to use a LINEARLAYOUT to be able to set the margins properly, and in that LINEARLAYOUT I had to use a RELATIVELAYOUT to use the addRules to get the proper positioning of the TextViews.
If there is an easier way, let me know. Thanks for everyones help!!
You are using too much nested layouts needed, here is stripped version.
xml:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:id="#+id/ll_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" />
</ScrollView>
Activity code:
mTvContainer = (LinearLayout) findViewById(R.id.ll_main);
int p = (int) getResources().getDimension(R.dimen.activity_horizontal_margin);
for (int i = 0; i < 20; i++) {
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
TextView tv = new TextView(this);
tv.setBackgroundColor(Color.BLUE);
tv.setTextColor(Color.WHITE);
tv.setPadding(p, p / 2, p, p / 2);
tv.setText("TextView " + i);
TextView tv2 = new TextView(this);
tv2.setBackgroundColor(Color.RED);
tv2.setTextColor(Color.WHITE);
tv2.setPadding(p, p / 2, p, p / 2);
tv2.setText("TextView " + i);
ll.addView(tv);
ll.addView(tv2);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
params.setMargins(p, p / 2, p, p / 2);
mTvContainer.addView(ll, params);
}
I am adding list of table layouts to a LinearLayout dynamically. For that I used ScrollView to see the list of tables which are added to linear layout.
below is my xml code.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="30dp"
android:paddingRight="30dp"
android:background="#color/white"
tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="RET MASTER SITE REPORTS"
android:paddingBottom="5dp"
android:textColor="#android:color/black"
android:textStyle="bold" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:orientation="vertical"></LinearLayout>
</ScrollView>
Source code:
layout = (LinearLayout) findViewById(R.id.linearLayout);
for (int i = 0; i < 5; i++) {
if (isColorChange) {
displayDeviceDetails(getColor(R.color.blue), getColor(R.color.lightBlue));
} else {
displayDeviceDetails(getColor(R.color.orange), getColor(R.color.lightOrange));
}
}
//Method which i am calling from loop
private void displayDeviceDetails(int titleColor, int cellColor) {
TableRow row = null;
TableLayout tableLayout = new TableLayout(this);
tableLayout.setPadding(0, 30, 0, 0);
for (int i = 0; i < arr.length; i++) {
row = (TableRow) inflater.inflate(R.layout.child_views, null);
row.setBackgroundColor(titleColor);
TextView tvTitle = (TextView) row.findViewById(R.id.tvRowTitle);
TextView tvText = (TextView) row.findViewById(R.id.tvRowText);
if (i == 0) {
tvText.setVisibility(View.GONE);
tvTitle.setGravity(Gravity.CENTER);
tvTitle.setTextColor(Color.WHITE);
tvTitle.setText(arr[i]);
} else {
changeBgColor(cellColor);
setBgColor(tvTitle);
setBgColor(tvText);
tvTitle.setGravity(Gravity.RIGHT);
tvTitle.setText(arr[i]);
tvText.setText(arr1[i]);
row.setBackgroundColor(titleColor);
}
tableLayout.addView(row);
}
layout.addView(tableLayout);
}
In the above code, There is TextView at top of the screen which is used to display some text. I added 3 tables to a linear layout it's showing 1st table from middle followed by next 2 tables with some white space/empty screen at bottom. If I increase number of tables that bottom screen empty space is increasing.
Example: There are 5 tables in a ScrollView, but it will display from 2nd table that might be from table starting or might be from middle of the table, followed by 3rd, 4th n 5th tables with empty space at bottom of the ScrollView.
I can able to see the Text, but I added 5 tables to linear layout inside ScrollView, when I executed that, it will display from 2nd table that might be from table starting or might be from middle, followed by 3rd, 4th n 5th tables with empty space. I have attachment my screen-shots.
Please help me.
Found it ! It's the android:layout_gravity="center_vertical" in the LinearLayout that is the culprit..
Just delete this and everything should be fine.
You need to change the root LinearLayout to RelativeLayout as below:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="30dp"
android:paddingRight="30dp"
android:background="#color/white"
tools:context=".MainActivity">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="RET MASTER SITE REPORTS"
android:paddingBottom="5dp"
android:textColor="#android:color/black"
android:textStyle="bold" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/textView">
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"></LinearLayout>
</ScrollView>
</RelativeLayout>
I hope this helps you
I created an app where clicking a button I create a TextView inside a LinearLayout(hosted inside a ScrollView).
When I click the button the TextViews are displayed starting from the top like this example:
First Image
http://imgur.com/8fhtYZs (Sorry I don't have reputation to display it in the post so I inserted the link)
But my task is to create the textviews at the bottom of my LinearLayout and make the TextViews already created scroll up the new one. (Sorry for my bad english) I show an example to be more comprehensible.
Second Image
http://imgur.com/RLHooaH
This is my code:
public class Messaggi2 extends ActionBarActivity implements OnClickListener {
LinearLayout mLayout;
ScrollView scroll;
Button invia;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.messaggi2);
mLayout = (LinearLayout) findViewById(R.id.LinearScrollLayout);
scroll = (ScrollView) findViewById(R.id.scrollView2);
invia = (Button) findViewById(R.id.Invia);
invia.setOnClickListener(this);
}
#Override
public void onClick(View arg0) {
mLayout.addView(createNewTextView("Message"));
}
private TextView createNewTextView(String text) {
final LayoutParams lparams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
final TextView textView = new TextView(this);
textView.setLayoutParams(lparams);
textView.setText(text);
textView.setBackgroundResource(R.drawable.balloon_broadcast_incoming_pressed);
return textView;
}
}
And this is my Layout.XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<ScrollView
android:id="#+id/scrollView2"
android:layout_width="fill_parent"
android:layout_height="640dp"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin" >
<LinearLayout
android:id="#+id/LinearScrollLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/Messaggio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/balloon_broadcast_incoming_pressed"
android:text="#string/messaggi" />
</LinearLayout>
</ScrollView>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_marginTop="70dp"
android:background="#drawable/linear_layout_bg" >
<EditText
android:id="#+id/Scrivi"
android:layout_width="440dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:hint="#string/scriviMessaggio" />
<Button
android:id="#+id/Invia"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#drawable/send_btn" />
</LinearLayout>
</LinearLayout>
There is no such thing as LinearLayout.BOTTOM, nor can we add rule for LinearLayout.
But the good news is to insert into LinearLayout, one could decide the sequence.. Just use the addView function with 3 arguments as below
mLayout.addView(view, index, param);
The index determined the order.
You need to set your linear layout's height to the height of your ScrollView so instead of using wrap_content cause that is wrapping your linearlayout change it to match_parent
example:
<LinearLayout
android:id="#+id/LinearScrollLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
When you want to add the button at the bottom of the linearlayout just add a rule to your layout params.
example:
private TextView createNewTextView(String text) {
LinearLayout.LayoutParams layoutParams =
(RelativeLayout.LayoutParams) txt1.getLayoutParams();
layoutParams.addRule(LinearLayout.BOTTOM, 1);
final TextView textView = new TextView(this);
textView.setLayoutParams(lparams);
textView.setText(text);
textView.setBackgroundResource(R.drawable.balloon_broadcast_incoming_pressed);
return textView;
}