Develop Reference

TextView doesn't wrap text

I need dynamically create next xml:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="2"
android:text="a lot of text will be here"
/>
<EditText
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
/>
</LinearLayout>
and here is my code:
LinearLayout ll = new LinearLayout(getActivity());
ll.setLayoutParams(layoutLP);
TextView title = new TextView(getActivity());
title.setText("a lot of text will be here");
title.setLayoutParams(textLP);
EditText editText = new EditText(getActivity());
editText.setLayoutParams(ediLP);
editText.setSingleLine();
ll.addView(title);
ll.addView(editText);
layoutLP = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
layoutLP.gravity = Gravity.CENTER;
textLP = new LinearLayout.LayoutParams(
0, LinearLayout.LayoutParams.WRAP_CONTENT);
textLP.weight = 2;
textLP.gravity = Gravity.CENTER;
editLP = new LinearLayout.LayoutParams(
0, LinearLayout.LayoutParams.WRAP_CONTENT);
editLP.weight = 3;
editLP.gravity = Gravity.CENTER;
However, on device I get problem: text inside textView is not wrapped and partly covered by editText.
Why does this happen?
And here is how it must looks like:

Your Activity should be
LinearLayout linearLayout = (LinearLayout) findViewById(R.id.ll);
LinearLayout.LayoutParams layoutLP = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
layoutLP.gravity = Gravity.CENTER;
layoutLP.weight = 2;
LinearLayout linearLayout1 = new LinearLayout(this);
linearLayout.setLayoutParams(layoutLP);
linearLayout.setLayoutParams(layoutLP);
linearLayout.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams textLP = new LinearLayout.LayoutParams(
0, LinearLayout.LayoutParams.WRAP_CONTENT);
textLP.weight = 2;
textLP.gravity = Gravity.CENTER;
LinearLayout.LayoutParams editLP = new LinearLayout.LayoutParams(
0, LinearLayout.LayoutParams.WRAP_CONTENT);
editLP.weight = 3;
editLP.gravity = Gravity.CENTER;
// Add textview 1
TextView textView1 = new TextView(this);
textView1.setLayoutParams(textLP);
textView1.setText("programmatically created TextView1");
// textView1.setBackgroundColor(0xff66ff66); // hex color 0xAARRGGBB
textView1.setPadding(20, 20, 20, 20);// in pixels (left, top, right, bottom)
linearLayout1.addView(textView1);
// Add textview 1
EditText editText = new EditText(this);
editText.setLayoutParams(editLP);
editText.setHint("programmatically created TextView1");
// editText.setBackgroundColor(Color.GRAY); // hex color 0xAARRGGBB
editText.setPadding(20, 20, 20, 20);// in pixels (left, top, right, bottom)
linearLayout1.addView(editText);
linearLayout.addView(linearLayout1);
Your xml file should be:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent">
<LinearLayout android:id="#+id/ll"
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="match_parent">
</LinearLayout>
</LinearLayout>

Try your phone or a phone with similar dpi-resolution properties as yours on the AVD, see if it is the same problem. Maybe the resolution on your phone is the problem.

Why is this code for adding buttons programatically does not work?

I am trying to add some buttons to a Relative Layout programatically. I used some examples seen on StackOverflow, but for some reason I cannot understand, my code is not working: I want to have my buttons one above the other, but they end up being one on top of the other.
Here is my layout file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/mainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.android.myApp.MainActivity" >
</RelativeLayout>
And here is my code:
mLayout = (RelativeLayout) findViewById(R.id.mainLayout);
RelativeLayout.LayoutParams lprams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
Button btnTag = new Button(this);
btnTag.setText("Button0");
btnTag.setId(0);
btnTag.setOnClickListener(mGlobalOnCLickListener);
mLayout.addView(btnTag, lprams);
lprams.addRule(RelativeLayout.BELOW, 0);
btnTag = new Button(this);
btnTag.setText("Button2");
btnTag.setId(1);
btnTag.setOnClickListener(mGlobalOnCLickListener);
mLayout.addView(btnTag, lprams);

Checkout this code....Hope this will help
mLayout = (RelativeLayout) findViewById(R.id.mainLayout);
RelativeLayout.LayoutParams lprams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
Button btnTag = new Button(this);
btnTag.setText("Button0");
btnTag.setId(10);
btnTag.setOnClickListener(mGlobalOnCLickListener);
mLayout.addView(btnTag, lprams);
lprams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
lprams.addRule(RelativeLayout.BELOW, 10);
btnTag = new Button(this);
btnTag.setText("Button2");
btnTag.setId(1);
btnTag.setOnClickListener(mGlobalOnCLickListener);
mLayout.addView(btnTag, lprams);

How to place one imageview over another?

i want to place one imageview over another. The imageview which i want to place above is getting placed below.
Here's my code:
for (int i = 1; i <= numberofuploads; i++) {
if (i == 1) {
relativeframe1 = new RelativeLayout(this);
RelativeLayout.LayoutParams paramslayout1 = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT / 2,
RelativeLayout.LayoutParams.MATCH_PARENT);
paramslayout1.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
relativeframe1.setLayoutParams(paramslayout1);
RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams(
pxrparams1a, pxrparams1b);
imgvwphoto1 = new ImageView(this);
imgvwphoto1.setId(1);
imgvwphoto1.setAlpha(500);
imgvwphoto1.setBackgroundResource(R.drawable.plusicon3);
// params1.setMargins(0, 90, 100, 40);
params1.setMargins(left1, top1, right1, bottom1);
imgvwphoto1.setLayoutParams(params1);
relativeframe1.addView(imgvwphoto1);
imgvwphoto1.setScaleType(ScaleType.MATRIX);
imgvwphoto1.setOnTouchListener(this);
RelativeLayout.LayoutParams paramscomponent1 = new RelativeLayout.LayoutParams(
irpc1, RelativeLayout.LayoutParams.MATCH_PARENT);
paramscomponent1.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
imgvwcomponent1 = new ImageView(this);
imgvwcomponent1.setAlpha(0);
imgvwcomponent1 .setBackgroundResource(R.drawable.leftpartdoubleheartframe);
imgvwcomponent1.setBackgroundResource(componentname.getImagename());
imgvwcomponent1.setLayoutParams(paramscomponent1);
relativeframe1.addView(imgvwcomponent1);
relativeframe.addView(relativeframe1);
} else {
relativeframe2 = new RelativeLayout(this);
RelativeLayout.LayoutParams paramslayout2 = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT / 2,
RelativeLayout.LayoutParams.MATCH_PARENT);
paramslayout2.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
relativeframe1.setLayoutParams(paramslayout2);
RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(
pxrparams2a, pxrparams2b);// 106.67dp, 120dp
imgvwphoto2 = new ImageView(this);
imgvwphoto2.setId(2);
imgvwphoto2.setAlpha(500);
imgvwphoto2.setBackgroundResource(R.drawable.plusicon3);
// params2.setMargins(165, 90, 0, 40);
params2.setMargins(left2, top2, right2, bottom2);
imgvwphoto2.setLayoutParams(params2);
relativeframe2.addView(imgvwphoto2);
imgvwphoto2.setScaleType(ScaleType.MATRIX);
imgvwphoto2.setOnTouchListener(this);
RelativeLayout.LayoutParams paramscomponent2 = new RelativeLayout.LayoutParams(
irpc2, RelativeLayout.LayoutParams.MATCH_PARENT);// 103.33dp
paramscomponent2.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
imgvwcomponent2 = new ImageView(this);
imgvwcomponent2.setAlpha(500);
imgvwcomponent2
.setBackgroundResource(R.drawable.rightpartdoubleheartframe);
imgvwcomponent2.setLayoutParams(paramscomponent2);
relativeframe2.addView(imgvwcomponent2);
relativeframe.addView(relativeframe2);
}
}
on click of plus icon, image is uploaded on that imgvwphoto,that is overlaping with heart frame, i want it to be viewed inside heart frame only. not outside of heart frame.

You should use two separate layouts and place one at another using <include> statemant like this
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<include layout="#layout/lay1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
<include layout="#layout/lay2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</merge>

How to align tab to center in android?

Thats my tab.
I want to align it to center of the screen. (horizontal and vertical)
The table is created dynamically from java.
I tried set
TableLayout t1 = (TableLayout)findViewById(R.id.maintable);
t1.setGravity(Gravity.CENTER);
But it align it only from top.
public class TabActivity extends Activity {
Trny t = Trny.getInstance();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab);
TableLayout t1 = (TableLayout)findViewById(R.id.maintable);
t1.setGravity(Gravity.CENTER);
// first row of table
TableRow tr = new TableRow(this);
TextView place = new TextView(this);
poradi.setText("P" );
poradi.setPadding(10, 5, 10, 5);
tr.addView(place);
TextView nameOfTeam = new TextView(this);
nazTymu.setText("Nazev" );
nazTymu.setPadding(10, 5, 10, 5);
tr.addView(nameOfTeam);
TextView matchesPlayed = new TextView(this);
odehraneZapasy.setText("Z" );
odehraneZapasy.setPadding(10, 5, 10, 5);
tr.addView(matchesPlayed);
TextView numbefOfWins = new TextView(this);
pocetVyher.setText("V" );
pocetVyher.setPadding(10, 5, 10, 5);
tr.addView(numbefOfWins);
TextView numberOfTies = new TextView(this);
pocetRemiz.setText("R" );
pocetRemiz.setPadding(10, 5, 10, 5);
tr.addView(numberOfTies);
TextView numberOfLoses = new TextView(this);
pocetProher.setText("P" );
pocetProher.setPadding(10, 5, 10, 5);
tr.addView(numberOfLoses);
TextView goalsScored = new TextView(this);
skorePlus.setText("VG" );
skorePlus.setPadding(10, 5, 10, 5);
tr.addView(goalsScored);
TextView goalsGained = new TextView(this);
skoreMinus.setText("OG" );
skoreMinus.setPadding(10, 5, 10, 5);
tr.addView(goalsGained);
TextView numberOfPoints = new TextView(this);
pocBodu.setText("B" );
pocBodu.setPadding(10, 5, 10, 5);
tr.addView(numberOfPoints);
t1.addView(tr);
//more rows dynamically created from java
}
}
XML file
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/maintable" >
</TableLayout>
How can i achieve this? Thanks guys.

change your layout XML to this
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/maintable"
android:layout_centerInParent="true" >
</TableLayout>
</RelativeLayout>

How to add a TextView to a LinearLayout dynamically in Android?

I try to add a TextView to a LinearLayout dynamically such as in the following code, but it doesn't appear when I run the application?
setContentView(R.layout.advanced);
m_vwJokeLayout=(LinearLayout) this.findViewById(R.id.m_vwJokeLayout);
m_vwJokeEditText=(EditText) this.findViewById(R.id.m_vwJokeEditText);
m_vwJokeButton=(Button) this.findViewById(R.id.m_vwJokeButton);
TextView tv=new TextView(this);
tv.setText("test");
this.m_vwJokeLayout.addView(tv);
What's the problem?

LayoutParams lparams = new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
TextView tv=new TextView(this);
tv.setLayoutParams(lparams);
tv.setText("test");
this.m_vwJokeLayout.addView(tv);
You can change lparams according to your needs

Here is a more general answer for future viewers of this question. The layout we will make is below:
Method 1: Add TextView to existing LinearLayout
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dynamic_linearlayout);
LinearLayout linearLayout = (LinearLayout) findViewById(R.id.ll_example);
// Add textview 1
TextView textView1 = new TextView(this);
textView1.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
textView1.setText("programmatically created TextView1");
textView1.setBackgroundColor(0xff66ff66); // hex color 0xAARRGGBB
textView1.setPadding(20, 20, 20, 20);// in pixels (left, top, right, bottom)
linearLayout.addView(textView1);
// Add textview 2
TextView textView2 = new TextView(this);
LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
layoutParams.gravity = Gravity.RIGHT;
layoutParams.setMargins(10, 10, 10, 10); // (left, top, right, bottom)
textView2.setLayoutParams(layoutParams);
textView2.setText("programmatically created TextView2");
textView2.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18);
textView2.setBackgroundColor(0xffffdbdb); // hex color 0xAARRGGBB
linearLayout.addView(textView2);
}
Note that for LayoutParams you must specify the kind of layout for the import, as in
import android.widget.LinearLayout.LayoutParams;
Otherwise you need to use LinearLayout.LayoutParams in the code.
Here is the xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/ll_example"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff99ccff"
android:orientation="vertical" >
</LinearLayout>
Method 2: Create both LinearLayout and TextView programmatically
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// NOTE: setContentView is below, not here
// Create new LinearLayout
LinearLayout linearLayout = new LinearLayout(this);
linearLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT));
linearLayout.setOrientation(LinearLayout.VERTICAL);
linearLayout.setBackgroundColor(0xff99ccff);
// Add textviews
TextView textView1 = new TextView(this);
textView1.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
textView1.setText("programmatically created TextView1");
textView1.setBackgroundColor(0xff66ff66); // hex color 0xAARRGGBB
textView1.setPadding(20, 20, 20, 20); // in pixels (left, top, right, bottom)
linearLayout.addView(textView1);
TextView textView2 = new TextView(this);
LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
layoutParams.gravity = Gravity.RIGHT;
layoutParams.setMargins(10, 10, 10, 10); // (left, top, right, bottom)
textView2.setLayoutParams(layoutParams);
textView2.setText("programmatically created TextView2");
textView2.setTextSize(TypedValue.COMPLEX_UNIT_SP, 18);
textView2.setBackgroundColor(0xffffdbdb); // hex color 0xAARRGGBB
linearLayout.addView(textView2);
// Set context view
setContentView(linearLayout);
}
Method 3: Programmatically add one xml layout to another xml layout
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dynamic_linearlayout);
LayoutInflater inflater = (LayoutInflater) getApplicationContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.dynamic_linearlayout_item, null);
FrameLayout container = (FrameLayout) findViewById(R.id.flContainer);
container.addView(view);
}
Here is dynamic_linearlayout.xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/flContainer"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
And here is the dynamic_linearlayout_item.xml to add:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/ll_example"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff99ccff"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#ff66ff66"
android:padding="20px"
android:text="programmatically created TextView1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#ffffdbdb"
android:layout_gravity="right"
android:layout_margin="10px"
android:textSize="18sp"
android:text="programmatically created TextView2" />
</LinearLayout>

I customized more #Suragch code. My output looks
I wrote a method to stop code redundancy.
public TextView createATextView(int layout_widh, int layout_height, int align,
String text, int fontSize, int margin, int padding) {
TextView textView_item_name = new TextView(this);
// LayoutParams layoutParams = new LayoutParams(
// LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
// layoutParams.gravity = Gravity.LEFT;
RelativeLayout.LayoutParams _params = new RelativeLayout.LayoutParams(
layout_widh, layout_height);
_params.setMargins(margin, margin, margin, margin);
_params.addRule(align);
textView_item_name.setLayoutParams(_params);
textView_item_name.setText(text);
textView_item_name.setTextSize(TypedValue.COMPLEX_UNIT_SP, fontSize);
textView_item_name.setTextColor(Color.parseColor("#000000"));
// textView1.setBackgroundColor(0xff66ff66); // hex color 0xAARRGGBB
textView_item_name.setPadding(padding, padding, padding, padding);
return textView_item_name;
}
It can be called like
createATextView(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT, RelativeLayout.ALIGN_PARENT_RIGHT,
subTotal.toString(), 20, 10, 20);
Now you can add this to a RelativeLayout dynamically. LinearLayout is also same, just add a orientation.
RelativeLayout primary_layout = new RelativeLayout(this);
LayoutParams layoutParam = new LayoutParams(LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT);
primary_layout.setLayoutParams(layoutParam);
// FOR LINEAR LAYOUT SET ORIENTATION
// primary_layout.setOrientation(LinearLayout.HORIZONTAL);
// FOR BACKGROUND COLOR
primary_layout.setBackgroundColor(0xff99ccff);
primary_layout.addView(createATextView(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT, RelativeLayout.ALIGN_LEFT, list[i],
20, 10, 20));
primary_layout.addView(createATextView(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT, RelativeLayout.ALIGN_PARENT_RIGHT,
subTotal.toString(), 20, 10, 20));

TextView rowTextView = (TextView)getLayoutInflater().inflate(R.layout.yourTextView, null);
rowTextView.setText(text);
layout.addView(rowTextView);
This is how I'm using this:
private List<Tag> tags = new ArrayList<>();
if(tags.isEmpty()){
Gson gson = new Gson();
Type listType = new TypeToken<List<Tag>>() {
}.getType();
tags = gson.fromJson(tour.getTagsJSONArray(), listType);
}
if (flowLayout != null) {
if(!tags.isEmpty()) {
Log.e(TAG, "setTags: "+ flowLayout.getChildCount() );
flowLayout.removeAllViews();
for (Tag tag : tags) {
FlowLayout.LayoutParams lparams = new FlowLayout.LayoutParams(FlowLayout.LayoutParams.WRAP_CONTENT, FlowLayout.LayoutParams.WRAP_CONTENT);
lparams.setMargins(PixelUtil.dpToPx(this, 0), PixelUtil.dpToPx(this, 5), PixelUtil.dpToPx(this, 10), PixelUtil.dpToPx(this, 5));// llp.setMargins(left, top, right, bottom);
TextView rowTextView = (TextView) getLayoutInflater().inflate(R.layout.tag, null);
rowTextView.setText(tag.getLabel());
rowTextView.setLayoutParams(lparams);
flowLayout.addView(rowTextView);
}
}
Log.e(TAG, "setTags: after "+ flowLayout.getChildCount() );
}
And this is my custom TextView named tag:
<?xml version="1.0" encoding="utf-8"?><TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="10dp"
android:textAllCaps="true"
fontPath="#string/font_light"
android:background="#drawable/tag_shape"
android:paddingLeft="11dp"
android:paddingTop="6dp"
android:paddingRight="11dp"
android:paddingBottom="6dp">
this is my tag_shape:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#f2f2f2" />
<corners android:radius="15dp" />
</shape>
efect:
In other place I'm adding textviews with language names from dialog with listview:

layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="#+id/layoutTest"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
</LinearLayout>
</RelativeLayout>
class file:
setContentView(R.layout.layout_dynamic);
layoutTest=(LinearLayout)findViewById(R.id.layoutTest);
TextView textView = new TextView(getApplicationContext());
textView.setText("testDynamic textView");
layoutTest.addView(textView);

If you are using Linearlayout. its params should be "wrap_content" to add dynamic data in your layout xml. if you use match or fill parent then you cannot see the output.
It Should be like this.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
</LinearLayout>