Develop Reference

Linearlayout weights not giving what I write

So I want to have a headline that is ALWAYS a third of the screen and then the rest of the 2 thirds of the screen with names. Seems easy but the result is that the headline becomes less than a third if there is many names. It is only 2 lines that does this I wrtite //1 //2 to easily find them but give the whole code since it may affect the result.
Here is a photo.
The top text does not show the whole message and Is not 1 third of the screen as intended
Thanks in advance!
private void showScores() {
float baseTextSize = 100/playerNum;
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT,
10000.0f //1
);
TextView t = new TextView(this);
String result_msg = getString(R.string.result_msg);
t.setLayoutParams(param);
t.setText(result_msg + "\n");
t.setTextColor(getColor(R.color.white));
if (playerNum>3) {
t.setTextSize(30f);
} else {
t.setTextSize(40f);
}
scoreShower.addView(t);
param.weight = 20000.0f/playerNum; //2
for (int i=0;i<playerNum;i++) {
TextView txt = new TextView(this);
txt.setLayoutParams(param);
if (i == 0) {
txt.setTextSize(baseTextSize + 8f);
txt.setTextColor(getColor(R.color.gold));
} else {
txt.setTextSize(baseTextSize);
txt.setTextColor(getColor(R.color.white));
}
String txtString = (i+1) + ". " + arrayList.get(i).getKey() + " : " + arrayList.get(i).getValue();
txt.setText(txtString);
if (playerNum>6) {
txt.setTextSize(10f);
}
scoreShower.addView(txt);
}

Try using weighted LinearLayout
<LinearLayout
....
...weightSum="3"
...orientation="vertical">
Set the weight of the top view to 2 using
<...
...layout_weight="1">
And the one below set the weight to 2

How to instantiate an imageview by using if else condition?

In my project, I am parsing an XML file. I have used if else condition to print the value in the Log cat. But, I need to know how to instantiate an ImageView by using if else condition. Here is the sample code which I am using.
For example,
if (parentTag.equals("Owners")) {
**it must instantiate an ImageView**
}
Please help. Thanks in advance.
XML:
<Contents>
<Owners>
<Owner>
<Name>Joselito Dimaculangan</Name>
<Age>16</Age>
<EmailAddress>joselito123#gmail.com</EmailAddress>
</Owner>
<Owner>
<Name>Noemi De Galileo</Name>
<Age>14</Age>
<EmailAddress>noemi111#gmail.com</EmailAddress>
</Owner>
</Owners>
<Dogs>
<Dog>
<Name>Barky</Name>
<Birthday>June 29, 2012</Birthday>
</Dog>
<Dog>
<Name>Jumbo</Name>
<Birthday>December 30, 2012</Birthday>
</Dog>
</Dogs>
</Contents>
Main Activity:
while (i.hasNext()) {
dataItem = (ParsedDataSet) i.next();
/*
* parentTag can also represent the main type of data, in
* our example, "Owners" and "Dogs"
*/
String parentTag = dataItem.getParentTag();
Log.v(LOG_TAG, "parentTag: " + parentTag);
if (parentTag.equals("Owners")) {
Log.v(LOG_TAG, "Name: " + dataItem.getName());
Log.v(LOG_TAG, "Age: " + dataItem.getAge());
Log.v(LOG_TAG,
"EmailAddress: " + dataItem.getEmailAddress());
}
else if (parentTag.equals("Dogs")) {
Log.v(LOG_TAG, "Name: " + dataItem.getName());
Log.v(LOG_TAG, "Birthday: " + dataItem.getBirthday());
}
}

If I understand you correctly:
Create the image view in the layout itself, but set it's visibility to 'invisible' or 'gone' depending on how your layout params work.
Then in your condition set the visibility to View.VISIBLE.
Layout
...
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/myImage"
android:src="#drawable/your_image"
android:visibility="invisible"/>
...
Activity
ImageView myView = (ImageView) findViewById(R.id.myImage);
if (parentTag.equals("Owners")) {
myView.setVisibility(View.VISIBLE);
} else {
myView.setVisibility(View.INVISIBLE);
}
or
If you'd like to programatically create the view:
ImageView imageView = new ImageView(this);
LinearLayout.LayoutParams vp =
new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
imageView.setLayoutParams(vp);
imageView.setImageDrawable(ContextCompat.getDrawable(this,R.drawable.myImage));
yourParentView.addView(imageView);

How to add dynamic layout in existing layout ( Android, JSON )

I have an app in which I am showing data from JSON. I am displaying data in a dynamic textview on the right and left side of the relative layout. Now I want to add this layout in an existing layout so that I can apply an OnClickListener on the textview. Right now I am getting data into a string and then setting that string into static textviews in the left and right side of the layout.
How would it be possible to generate textview dynamically on the basis of number of data I am getting from JSON ?
for (Region object : temp.phonelist.regionList)
{
if (object.getCCInfoShortDesc() != null || !(object.getCCInfoShortDesc().equals(null)))
{
Log.i("nullexception", "nullexception");
holder.tvDescription.setText(object.getCCInfoShortDesc());
holder.tvDescription.setVisibility(View.VISIBLE);
}else {
Log.i("nullexception1", "nullexception1");
holder.tvDescription.setVisibility(View.GONE);
}
leftContent += object.getCCInfoLeft() + ":" + "\n";
rightContent += object.getCCInfoRight() + "\n";
}
Log.i("lefftcontent", leftContent);
Log.i("rightcontent", rightContent);
if (leftContent != null) {
holder.tvData2.setText(leftContent);
holder.tvData2.setVisibility(View.VISIBLE);
}
if (rightContent != null) {
holder.tvData1.setText(rightContent);
holder.tvData1.setVisibility(View.VISIBLE);
}

You can do it in this way..
final int Count = < Number of TextViews>; // total number of textviews to add
final TextView[] TextViewsARR = new TextView[N]; // create an empty array;
for (int i = 0; i < Count; i++) {
// create a new textview
final TextView rowTextView = new TextView(this);
// set some properties of rowTextView or something
rowTextView.setText("This is row #" + i);
// add the textview to the linearlayout
myLinearLayout.addView(rowTextView);
// save a reference to the textview for later
TextViewsARR [i] = rowTextView;
}

I have a sample below that generates a checkbox dynamically, If you
observe i am generating the checkbox based on the cursor count.
You can adapt this saple to your needs
Instead of checkbox use a texview
Give any layout like linear, relative etc and generate views
dynamically
private CheckBox chkBoxMealType[] = null;
mCursor = db.rawQuery("SELECT meal_type_id,meal_type_name FROM meal_type_mas", null);
if(mCursor.moveToFirst()){
do{
if(chkBoxMealTypeCnt==0){
chkBoxMealType=new CheckBox[mCursor.getCount()];
}
//create a general view for checkbox
chkBoxMealType[chkBoxMealTypeCnt]= new CheckBox(getActivity());
//Create params for veg-checkbox
//Reason:: we don't need to worry about the data exist in cuisine_type_mas table
chkBoxMealType[chkBoxMealTypeCnt].setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
chkBoxMealType[chkBoxMealTypeCnt].setTextColor(getResources().getColor(R.color.searchGoldLight));
chkBoxMealType[chkBoxMealTypeCnt].setTextSize(TypedValue.COMPLEX_UNIT_SP,12);
chkBoxMealType[chkBoxMealTypeCnt].setTag(mCursor.getString(mCursor.getColumnIndexOrThrow(meal_type_mas.COLUMN_MEAL_TYPE_ID)));
chkBoxMealType[chkBoxMealTypeCnt].setText(WordUtils.capitalizeFully(mCursor.getString(mCursor.getColumnIndexOrThrow(meal_type_mas.COLUMN_MEAL_TYPE_NAME))));
mealTypeContainer.addView(chkBoxMealType[chkBoxMealTypeCnt]);
//since cursor count starts from 0 last count must be allowed
chkBoxMealTypeCnt++;
}while(mCursor.moveToNext());
Log.d("", "");
}
I have another sample..... Download this project(Click Here) and run in your editor
Snapshot::

Firstly you need to add a View in your layout ... Like you may try using LinearLayout or HorizontalLayout ... and then attach/add your dynamic textview to that layout.
Pragmatically you may try like this
packageButtons = new ArrayList<TextView>(); // Create your textview arraylist like this
for(int a = 0; a < your_text_view_from_json.size(); a++){
final TextView rowTextView;
rowTextView = new TextView(getApplicationContext());
rowTextView.setText(taxi_type_spin.get(a).taxi_type);
rowTextView.setTextSize(15);
rowTextView.setTextColor(getResources().getColor(R.color.white));
LinearLayout.LayoutParams lparam = new LinearLayout.LayoutParams(0,
LinearLayout.LayoutParams.WRAP_CONTENT, 1);
//rowTextView.setPadding(0, 0, 0, 0);
packageButtons.add(rowTextView);
rowTextView.setLayoutParams(lparam);
rowTextView.setId(a);
final int b = a;
// get value of clicked item over here ..
rowTextView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Button btn = (Button)v;
String get_value = btn.getText().toString();
//Toast.makeText(getApplicationContext(), "Button name is : " + get_value + " AND ID IS : " + rowTextView.getId(), Toast.LENGTH_LONG).show();
if(taxi_type_spin.get(b).taxi_type.equalsIgnoreCase(Utils.Hourly_Package))
{
setTaxiType(rowTextView.getId(),true);
ll_spin.setVisibility(View.VISIBLE);
}
else
{
setTaxiType(rowTextView.getId(),false);
ll_spin.setVisibility(View.GONE);
}
setSelectedButtonColor(b);
}
});
// add the textview to the linearlayout
myLinearLayout.addView(rowTextView);
NOTE rowTextView .. this is your default view attached to your XML file
Hope it helps!

private void setLayout(LinearLayout llayout,
final ArrayList<String> items) {
for (int i = 0; i < items.size(); i++) {
LinearLayout row = null;
LayoutInflater li = getLayoutInflater();
row = (LinearLayout) li.inflate(R.layout.custom_item,
null);
ImageView image = (ImageView) row.findViewById(R.id.image);
llayout.addView(row);
}
}

I would suggest you to use ArrayList, because the class java.util.ArrayList provides resizable-array, which means that items can be added and removed from the list dynamically.
and get value from ArrayList something like this:
for(int i=0; i<arrayList.size(); i++)
{
textName.setText(object.getName());
}

How it is possible to genrate textview dynamically
on the basis of number of data i am getting from json.
You need to create TextView and add it to the parent layout each time you iterate on the forloop. So you will have textView for each of the element of the temp.phonelist.regionList
sample:
for (Region object : temp.phonelist.regionList)
{
TextView tx = new TextView(context); //creating a new instance if textview
//yourstuff goes here
tx.setText(text_you_want);
yourView.addView(tx); //this is to add the textView on each iteration
}

here is your solution do this way,Take one Layout(Linear or Relative) and add control dynamically....
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
for (int i = 0; i < 4; i++)
{
TextView txtDemo = new TextView(getActivity());
txtDemo .setTextSize(16);
txtDemo .setLayoutParams(lp);
txtDemo .setId(i);
lp.setMargins(0, 10, 0, 0);
txtDemo .setPadding(20, 10, 10, 10);
txtDemo .setText("Text View"+ i);
linearlayout.addView(txtDemo );
}
}

I can not break up the text on the page

I've got a question. text. for example
String str = "line1"+"\n" +
"line2"+"\n" +
"line3"+"\n" +
"line4"+"\n" +
"line5"+"\n" +
"line6"+"\n" +
"line7"+"\n" +
"line8"+"\n" +
"line9"+"\n" +
"line10"+"\n" +
"line11"+"\n" +
"line12"+"\n" +
"line13"+"\n" +
"line14"+"\n" +
"line15"+"\n" +
"line16"+"\n" +
"line17"+"\n";
I have a component that creates the page.
I need my text is divided into blocks (pages) and place it on the page.
Now I work like that. I break the text into lines, and each page can place the line. But I need to break up the text such as 20 lines per 1 page. and these blocks of 20 lines displayed on a separate view. Now I work as follows:
LayoutInflater inflater = LayoutInflater.from(this);
List<View> pages = new ArrayList<View>();
String[] str1 = str.split("\n");
View[] page1 = new View[7];
TextView[] textView1 = new TextView[7];
for (int i=1;i<page1.length;i++){
page1[i] = inflater.inflate(R.layout.page, null);
textView1[i] = (TextView) page1[i].findViewById(R.id.text_view);
textView1[i].setText(str1[i+1]);//then I do not need one row and 20
pages.add(page1[i]);
}

What does "index" stands for in TableRow.addView (View child, int index)?

Is it meaning that you can build a table row with an empty column ?
I want to do a TableLayout like this :
+--------------+---------------------+
+ *Nothing* + LinearLayout +
+------------------------------------+
+ LinearLayout + *Nothing* +
+--------------+---------------------+
Is it possible with index property ?
TableRow topTableRow = new TableRow(context);
topTableRow.addView(xAxisScrollView, 1);
addView(topTableRow);
TableRow bottomTableRow = new TableRow(context);
bottomTableRow.addView(yAxisScrollView, 0);
addView(bottomTableRow);

As you can read in the documentation, it should be possible. But I would just try it. It's done in 2 minutes ;)