How to add TableRow from xml to TableLayout programmatically?

How to add TableRow from xml to TableLayout programmatically? - java

Im new to Android and I'm trying to add a TableRow, which I already made with xml, to a TableLayout programmatically. I'm getting Force Closes, most are NullPointerExcpetions.
Here's my java class
public class DayFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.subjects_list, container, false);
TableLayout tl = (TableLayout) view.findViewById(R.id.tl);
TableRow tr = (TableRow) view.findViewById(R.id.tr_row);
tl.addView(tr); //not working, obviously im missing something
//xml parsing stuff
return view;
}
}
This is my layout with the TableLayout:
<?xml version="1.0" encoding="utf-8"?>
<HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/horizontalScrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="5dp" >
<ScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fillViewport="true"
android:orientation="vertical" >
<TableLayout
android:id="#+id/tl"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<include
android:id="#+id/header"
layout="#layout/table_header" />
<include android:id="#+id/h_divider"
layout="#layout/horizontal_divider"/>
</TableLayout>
</ScrollView>
</HorizontalScrollView>
And the TableRow:
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/tr_row"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/tv_hour"
android:layout_weight="1"
android:gravity="center"
android:padding="8dp"
android:textSize="15sp"
android:textStyle="bold" />
<View
android:layout_weight="1"
android:background="#drawable/vertical_cell_divider" />
<TextView
android:id="#+id/tv_subject"
android:layout_weight="1"
android:gravity="left"
android:padding="8dp"
android:textSize="18sp" />
<View
android:layout_weight="1"
android:background="#drawable/vertical_cell_divider" />
<TextView
android:id="#+id/tv_start"
android:layout_weight="1"
android:gravity="left"
android:padding="8dp"
android:textSize="18sp" />
<TextView
android:id="#+id/tv_bar"
android:layout_weight="1"
android:gravity="left"
android:textSize="18sp" />
<TextView
android:id="#+id/tv_end"
android:layout_weight="1"
android:gravity="left"
android:padding="8dp"
android:textSize="18sp" />
</TableRow>
I tried lots of different ways to achieve it but still nothing.

Replace code:
TableRow tr = (TableRow) view.findViewById(R.id.tr_row);
tl.addView(tr); //not working, obviously im missing something
with
View tr = inflater.inflate(R.layout.table_row_layout, null,false);
tl.addView(tr); //not working, obviously im missing something

Related

Why do i always see the last id in View.OnClickListener?

Why do I always see the last id no matter which text I click?
I would like to see the right fragment displayed in the layout that i created according to the relevant text clicked. I always see the 'alternatives' fragment.
I understood that tags could be helped, but I could not figure out how to use them.
In addition, I tried to use diffrent versions of FragmentManager and FragmentTransaction and even to remove the switch and call each setOnClickListener of textview separately but nothing helped.
This is my Activity file:
IngredientsFragment ingredientsFragment;
FavouritesFragment favouritesFragment;
FeedbacksFragment feedbacksFragment;
Write_Feedback_Fragment writeFeedbackFragment;
AlternativesFragment alternativesFragment;
TextView ingredients;
TextView favourites;
TextView feedbacks;
TextView alternatives;
TextView writeFeedback;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_product_details);
window=this.getWindow();
window.setStatusBarColor(this.getResources().getColor(R.color.colorPrimaryDark));
ingredients= (TextView) findViewById(R.id.ingredients_option);
favourites= (TextView) findViewById(R.id.favorites_option);
feedbacks= (TextView) findViewById(R.id.watch_feedback_option);
writeFeedback= (TextView) findViewById(R.id.add_feedback_option);
alternatives= (TextView) findViewById(R.id.alternatives_option);
ingredients.setOnClickListener(this);
favourites.setOnClickListener(this);
feedbacks.setOnClickListener(this);
writeFeedback.setOnClickListener(this);
alternatives.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId())
{
case R.id.ingredients_option:
ingredientsFragment= new IngredientsFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,ingredientsFragment).commit();
break;
case R.id.favorites_option:
favouritesFragment= new FavouritesFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,favouritesFragment).commit();
break;
case R.id.watch_feedback_option:
feedbacksFragment= new FeedbacksFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,feedbacksFragment).commit();
break;
case R.id.add_feedback_option:
writeFeedbackFragment= new Write_Feedback_Fragment();
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,writeFeedbackFragment).commit();
break;
case R.id.alternatives_option:
alternativesFragment= new AlternativesFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,alternativesFragment).commit();
break;
}
}
}
This is my XML file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ProductDetails">
<RelativeLayout
android:id="#+id/recommendation_template"
android:layout_width="match_parent"
android:layout_height="142dp"
android:background="#android:color/white">
<ImageView
android:id="#+id/registartion_arrow"
android:layout_width="45dp"
android:layout_height="34dp"
android:layout_alignParentRight="true"
android:src="#drawable/ic_arrow_forward_black_24dp" />
<TextView
android:id="#+id/rec_tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingTop="10dp"
android:text="Recommendation:"
android:textSize="25dp"
android:textStyle="bold"
android:textColor="#android:color/black"/>
<ImageView
android:id="#+id/vi_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/rec_tv"
android:layout_alignParentLeft="true"
android:layout_marginLeft="0dp"
android:layout_marginTop="26dp"
android:paddingLeft="80dp"
android:src="#drawable/ic_check" />
<TextView
android:id="#+id/vi_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/vi_image"
android:layout_marginLeft="4dp"
android:layout_marginTop="-29dp"
android:layout_toRightOf="#id/vi_image"
android:text="This is for you"
android:textColor="#android:color/black"
android:textSize="20dp" />
<ImageView
android:id="#+id/not_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/vi_image"
android:layout_alignParentLeft="true"
android:layout_marginLeft="0dp"
android:layout_marginTop="3dp"
android:paddingLeft="80dp"
android:src="#drawable/ic_do_not" />
<TextView
android:id="#+id/not_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/not_image"
android:layout_marginLeft="5dp"
android:layout_marginTop="-27dp"
android:layout_toRightOf="#id/not_image"
android:text="Not for you"
android:textColor="#android:color/black"
android:textSize="20dp" />
</RelativeLayout>
<HorizontalScrollView
android:id="#+id/recommendation_scrollView"
android:layout_width="match_parent"
android:layout_height="83dp"
android:layout_below="#id/recommendation_template"
android:layout_marginTop="7dp">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/recommendation_template"
style="?android:attr/borderlessButtonStyle">
<TextView
android:id="#+id/ingredients_option"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:drawableTop="#drawable/ingredients"
android:text="Ingredients" />
<TextView
android:id="#+id/favorites_option"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:drawableTop="#drawable/ic_star"
android:paddingLeft="80dp"
android:text="Favorites" />
<TextView
android:id="#+id/watch_feedback_option"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:drawableTop="#drawable/customer_review"
android:paddingLeft="145dp"
android:text="Feedbacks" />
<TextView
android:id="#+id/add_feedback_option"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:drawableTop="#drawable/write_feedback"
android:paddingLeft="220dp"
android:text="Write feedback" />
<TextView
android:id="#+id/alternatives_option"
android:layout_width="408dp"
android:layout_height="90dp"
android:layout_gravity="left"
android:drawableTop="#drawable/ic_alternatives"
android:paddingLeft="320dp"
android:text="Alternatives" />
</FrameLayout>
</HorizontalScrollView>
<ScrollView
android:id="#+id/scrollView_container"
android:layout_width="match_parent"
android:layout_height="499dp"
android:layout_below="#id/recommendation_scrollView">
<RelativeLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="463dp">
</RelativeLayout>
</ScrollView>
</RelativeLayout>

Your code should work like that. The problem is your layout. See the textviews in your FrameLayout. Your defining a paddingLeft and layout_width so, that your textview alternatives_option is overlaying all the other textviews. Thats why in the onclick you always get the id of that view.
I suggest doing a tutorial about XML layout.
<TextView
android:id="#+id/alternatives_option"
android:layout_width="408dp"
android:layout_height="90dp"
android:layout_gravity="left"
android:drawableTop="#drawable/ic_alternatives"
android:paddingLeft="320dp"
android:text="Alternatives" />

How to set dynamically weight to LinearLayout? [duplicate]

This question already has answers here:
Dynamically changing the linearlayout width or height on Android
(4 answers)
Closed 4 years ago.
In my application I want set dynamically weight to LinearLayout and for this I write below codes, but when running application show me Force close error!
Force close message in logCat :
java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot be cast to android.widget.RelativeLayout$LayoutParams
My XML codes :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
tools:context=".activity.UpdateActivity">
<!--Header-->
<RelativeLayout
android:id="#+id/dialogEndCount_headerLay"
android:layout_width="match_parent"
android:layout_height="#dimen/size120"
android:background="#color/tabHomeColor">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_marginTop="#dimen/size40"
android:text="#string/updateDialogTitle"
android:textColor="#color/white"
android:textSize="#dimen/font16" />
<com.airbnb.lottie.LottieAnimationView
android:id="#+id/dialogUpdate_animate"
android:layout_width="#dimen/size150"
android:layout_height="#dimen/size150"
android:layout_alignParentLeft="true"
android:layout_centerInParent="true"
android:layout_marginLeft="#dimen/size20"
app:lottie_autoPlay="true"
app:lottie_colorFilter="#color/white"
app:lottie_fileName="update.json"
app:lottie_loop="true" />
</RelativeLayout>
<!--Content-->
<RelativeLayout
android:id="#+id/dialogEndCount_contentLay"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/dialogEndCount_buttonsLay"
android:layout_below="#+id/dialogEndCount_headerLay"
android:layout_marginBottom="#dimen/size10"
android:layout_marginTop="#dimen/size10"
android:background="#drawable/bg_dialog_vip_white">
<!--Type-->
<TextView
android:id="#+id/dialogUpdate_infoTypeTxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginLeft="#dimen/size15"
android:layout_marginRight="#dimen/size15"
android:layout_marginTop="#dimen/size10"
android:gravity="center_vertical"
android:text="نوع بروز رسانی : اجباری"
android:textColor="#color/black"
android:textSize="#dimen/font14" />
<!--Content-->
<ScrollView
android:id="#+id/dialogUpdate_infoContentScrollLay"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/dialogUpdate_downloadProgress"
android:layout_alignRight="#+id/dialogUpdate_infoTypeTxt"
android:layout_below="#+id/dialogUpdate_infoTypeTxt"
android:layout_marginLeft="#dimen/size15"
android:layout_marginTop="#dimen/size20">
<RelativeLayout
android:id="#+id/dialogUpdate_infoContentLay"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/dialogUpdate_infoContentTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:gravity="center_vertical"
android:text="#string/updateContent"
android:textColor="#color/black"
android:textSize="#dimen/font14" />
<TextView
android:id="#+id/dialogUpdate_infoContentTxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="#+id/dialogUpdate_infoContentTitle"
android:layout_marginTop="#dimen/size5"
android:gravity="center_vertical"
android:textColor="#color/favColorON"
android:textSize="#dimen/font14" />
</RelativeLayout>
</ScrollView>
<!--Download layout-->
<com.tellfa.colony.view.DownloadProgressView
android:id="#+id/dialogUpdate_downloadProgress"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignRight="#+id/dialogUpdate_infoTypeTxt"
android:layout_marginLeft="#dimen/size15"
android:layout_marginTop="#dimen/size10" />
</RelativeLayout>
<!--Buttons-->
<LinearLayout
android:id="#+id/dialogEndCount_buttonsLay"
android:layout_width="match_parent"
android:layout_height="#dimen/size60"
android:layout_alignParentBottom="true"
android:orientation="horizontal"
android:weightSum="3">
<!--Cancel-->
<android.support.v7.widget.CardView
android:id="#+id/dialogUpdate_cancelBtn"
android:layout_width="#dimen/margin_0dp"
android:layout_height="#dimen/size50"
android:layout_marginBottom="#dimen/size5"
android:layout_marginLeft="#dimen/size5"
android:layout_marginRight="#dimen/size5"
android:layout_marginTop="#dimen/size5"
android:layout_weight="1"
app:cardBackgroundColor="#color/red"
app:cardCornerRadius="#dimen/size3"
app:cardElevation="#dimen/size3">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:id="#+id/dialogUpdate_cancelBtnImg"
android:layout_width="#dimen/size25"
android:layout_height="#dimen/size25"
android:layout_centerVertical="true"
android:layout_marginLeft="#dimen/size5"
android:src="#drawable/ic_close"
android:tint="#color/white" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_toRightOf="#+id/dialogUpdate_cancelBtnImg"
android:ellipsize="end"
android:gravity="center"
android:singleLine="true"
android:text="#string/updateCancel"
android:textColor="#color/white"
android:textSize="#dimen/font14" />
</RelativeLayout>
</android.support.v7.widget.CardView>
<!--Direct-->
<android.support.v7.widget.CardView
android:id="#+id/dialogUpdate_directBtn"
android:layout_width="#dimen/margin_0dp"
android:layout_height="#dimen/size50"
android:layout_marginBottom="#dimen/size5"
android:layout_marginLeft="#dimen/size5"
android:layout_marginRight="#dimen/size5"
android:layout_marginTop="#dimen/size5"
android:layout_weight="1"
app:cardBackgroundColor="#color/green"
app:cardCornerRadius="#dimen/size3"
app:cardElevation="#dimen/size2">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:id="#+id/dialogUpdate_directBtnImg"
android:layout_width="#dimen/size25"
android:layout_height="#dimen/size25"
android:layout_centerVertical="true"
android:layout_marginLeft="#dimen/size5"
android:src="#drawable/appro_ic_download_circle"
android:tint="#color/white" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_toRightOf="#+id/dialogUpdate_directBtnImg"
android:ellipsize="end"
android:gravity="center"
android:layout_marginRight="#dimen/size1"
android:singleLine="true"
android:text="#string/updateOK"
android:textColor="#color/white"
android:textSize="#dimen/font12" />
</RelativeLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</RelativeLayout>
My JAVA codes:
public class UpdateActivity extends BaseActivity {
#BindView(R.id.dialogEndCount_buttonsLay)
LinearLayout dialogEndCount_buttonsLay;
private Window window;
private Activity activity;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_update);
//Initialize
ButterKnife.bind(this);
activity = this;
window = activity.getWindow();
//Set color to statusBar
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
window.setStatusBarColor(getResources().getColor(R.color.tabHomeColor));
}
//Set dynamically weight
dialogEndCount_buttonsLay.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT));
}
}
How can I fix this problem?

If you want set dynamically weightSum just use this code :
dialogEndCount_buttonsLay.setWeightSum(3f);
i hope help you

You're mixing LinearLayout and RelativeLayout. Change your layout to use a LinearLayout then weight is an available property on your LayoutParams.
val params = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
params.weight = 1f

Increasing scrollview by adding buttons in a relativelayout (or linearlayout ) from bottom to top

Could really use some help with this one.
I'm trying to start with a single button at the bottom of my screen. When my counter++ button is clicked, a second button will be dynamically created above the button at the bottom of the screen. I was able to get this far, the problem is that the height of my scrollview doesn't increase when my buttons reach the top of the screen. Please see my example below.
Example
I'm assuming the scrollview only increases when items are added below the current view although if that's the case, is there no way I can create several buttons starting at the bottom going upwards?
Here my code.
XML:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:context="com.example.bbetzner.ttt.Map">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
>
<RelativeLayout
android:id="#+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<Button
android:id="#+id/count"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="count++"
/>
<Button
android:id="#+id/floor0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="0"
/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
Java:
public void addfloor(){
Button myButton = new Button(this);
myButton.setText(""+floor);
margincount += 100;
RelativeLayout ll = findViewById(R.id.layout);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ABOVE, R.id.floor0);
lp.addRule(RelativeLayout.CENTER_HORIZONTAL);
lp.bottomMargin = margincount;
ll.addView(myButton, lp);
}
I've also tried doing this in a linear layout to see if the scrollview would increase but I couldn't figure out how to stack buttons from bottom to top in a linear layout. :S
Thanks in advance, yall are awesome!

#Texas use below code using that you are achieving what you want:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<Button
android:id="#+id/count"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="count++" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:scrollbars="vertical">
<LinearLayout
android:id="#+id/lladdViews"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:gravity="bottom"
android:orientation="vertical">
<Button
android:id="#+id/floor0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="0" />
</LinearLayout>
</ScrollView>
</LinearLayout>
and here is Java File:
public class SampleActivity extends Activity {
LinearLayout lladdViews;
Button count;
int floor = 0;
private int margincount = 0;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sample_activity);
lladdViews = (LinearLayout) findViewById(R.id.lladdViews);
count = (Button) findViewById(R.id.count);
count.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
addfloor();
}
});
}
public void addfloor() {
Button myButton = new Button(this);
myButton.setText("" + floor);
margincount += 10;
RelativeLayout ll = new RelativeLayout(this);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ABOVE, R.id.floor0);
lp.addRule(RelativeLayout.CENTER_HORIZONTAL);
lp.bottomMargin = margincount;
ll.addView(myButton, lp);
lladdViews.addView(ll);
}
}

Here is your designing part happy coding.....
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<LinearLayout
android:id="#+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
>
<Button
android:id="#+id/count"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="count++"
/>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
>
<LinearLayout
android:id="#+id/layout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
>
<Button
android:id="#+id/floor0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="0"
/>
<Button
android:id="#+id/floor1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="7"
/>
<Button
android:id="#+id/floor2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="6"
/>
<Button
android:id="#+id/floor3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="5"
/>
<Button
android:id="#+id/floor4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="4"
/>
<Button
android:id="#+id/floor5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="0"
/><Button
android:id="#+id/floor6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="3"
/><Button
android:id="#+id/floor7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="2"
/>
<Button
android:id="#+id/floor8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="1"
/>
<Button
android:id="#+id/floor9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="0"
/>
</LinearLayout>
</ScrollView>
</LinearLayout>

why cant I Update text dynamically in fragments?

Here's my Xml code
<?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="vertical"
>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:text="Well heres the secret !"
android:textAlignment="center"
android:textColor="#color/bluishblack"
android:textSize="25sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:text="1. Secret is simple,the cards we showed you contained key numbers(very first number of the list)"
android:textAlignment="center"
android:textSize="23sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="' 2 , 4 , 1 , 16 , 32 , 8 , 64 ' "
android:textAlignment="center"
android:textColor="#color/dgreen"
android:textSize="23sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:text="2. Above are the key numbers. For every card that contains spectator's number you add key number(First number of card) of respective card. "
android:textAlignment="center"
android:textSize="23sp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:text="3. And thats how you Read People's mind ! As easy as that ! "
android:textAlignment="center"
android:textSize="23sp" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<Button
android:id="#+id/play_again"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:onClick="playAgain"
android:text="Play again !"
android:textColor="#color/dgreen"
/>
</RelativeLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_marginBottom="8dp"
android:background="#drawable/googleg_standard_color_18" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="8dp"
android:text="Your rating helps us to put more efforts i future devlopment,also we get to know more aboout your experiences and Views ! "
android:textAlignment="center"
android:textSize="20sp" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="99dp"
android:text="Rate now !" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Still Here? Do you want to amaze your friends and family.There are many awesome tricks which will blow away peoples mind yet so simple to do See below recommendations now "
android:textAlignment="center"
android:textSize="20sp"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:text="Do Want to amaze your Freinds !!"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="26sp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:background="#android:color/darker_gray" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="6dp"
android:layout_marginTop="8dp"
android:text="Here are some of our Suggestions :- "
android:textColor="#color/colorPrimaryDark"
android:textSize="16sp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_margin="8dp"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:background="#android:color/darker_gray" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="8dp"
android:text="Swipe to see more --->"
android:textAlignment="center"
android:textSize="22sp" />
</LinearLayout>
</RelativeLayout>
</ScrollView>
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="500dp">
</android.support.v4.view.ViewPager>
</LinearLayout>
</ScrollView>
here's my java code of fragment
public class Fragment1 extends Fragment {
private TextView tv;
#Override public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) {
Intent n = new Intent(Intent.CATEGORY_BROWSABLE,Uri.parse("http://amzn.to/2rpR35P"));
ViewGroup rootView = (ViewGroup)inflater.inflate(R.layout.pager_layout, container, false);
tv = (TextView)rootView.findViewById(R.id.textDes);
tv.setText("text to set dynamically");
return inflater.inflate(R.layout.pager_layout, container, false);
}
}
Here's code for pager Adapter
public class PagerAdapter extends FragmentPagerAdapter {
public PagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
if (position == 0) {
return new Fragment1();
}
if (position == 1) {
return new Fragment2();
}
if (position == 2) {
return new Fragment3();
} else {
return new Fragment4();
}
}
#Override
public int getCount() {
return 4;
}
}
here's code for layout of pager
<?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:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="24dp"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_icon"
android:id="#+id/image_book"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:text="This is description"
android:textSize="20sp"
android:id="#+id/textDes"
/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
>
<Button
android:id="#+id/getItNow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Start amazing your friends !"
android:textAlignment="center"
/>
</LinearLayout>
</LinearLayout>
How can i change text and images dynamically also i've three more fragments that use same layout(pager_layout) also can i add different intents or not?

You have to set text in your text view inside onViewCreated() method and not in onCreateView() in your fragment class:
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.pager_layout, container, false);
return view;
}
TextView tv;
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
tv = (TextView) view.findViewById(R.id.textDes);
tv.setText("text to set dynamically");
...
}

How to find the ID of a dynamic UI element in android

I can make the dynamic UI without problems, but I don't know how to access the view with findviewbyid (R.id._____) I don't know what to put in the blank.
.java code
public class newList extends AppCompatActivity {
Button btnAddItem;
RelativeLayout layout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_new_list);
// allows the creation of dynamic rows
btnAddItem = (Button) findViewById(R.id.addItem);
btnAddItem.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
LayoutInflater inflater = getLayoutInflater();
ViewGroup parent = (ViewGroup) findViewById(R.id.linearVert);
inflater.inflate(R.layout.rows, parent);
}
});
}
}
xml that is associated with the java file
<?xml version="1.0" encoding="utf-8"?>
<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: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.app.shoppingbuddy.shoppingbuddy.newList">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="300dp"
android:id="#+id/scrollView" >
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:id="#+id/linearVert">
</LinearLayout>
</ScrollView>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Subtotal"
android:id="#+id/subtotal"
android:textColor="#ffc800"
android:layout_above="#+id/tax"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Tax"
android:id="#+id/tax"
android:textColor="#ee00ff"
android:layout_above="#+id/total"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Total"
android:id="#+id/total"
android:textColor="#ff0000"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_marginBottom="20dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="#+id/subtotalAmount"
android:layout_alignBottom="#+id/subtotal"
android:layout_alignEnd="#+id/scrollView"
android:textColor="#ffc800" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="#+id/taxAmount"
android:layout_above="#+id/total"
android:layout_alignParentEnd="true"
android:textColor="#ee00ff" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="#+id/totalAmount"
android:layout_alignBottom="#+id/total"
android:layout_alignEnd="#+id/taxAmount"
android:textColor="#ff0000" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add Item"
android:id="#+id/addItem"
android:layout_above="#+id/subtotal"
android:layout_centerHorizontal="true"
android:layout_marginBottom="20dp" />
</RelativeLayout>
xml used to create rows
<?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:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:weightSum="1"
android:id="#+id/linearHor">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:id="#+id/itemImage"
android:src="#drawable/box"
android:padding="5dp" />
<EditText
android:layout_width="109dp"
android:layout_height="wrap_content"
android:id="#+id/itemName"
android:hint="Name"
android:layout_weight="0.78" />
<EditText
android:layout_width="100dp"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="#+id/itemPrice"
android:hint="$ Price" />
</LinearLayout>
</LinearLayout>

There will be no unique R.id value at the activity level. For example, suppose the user taps the button 10 times, so you inflate the R.layout.rows layout 10 times. As a result, there will be 10 R.id.linearHor widgets, 10 R.id.itemPrice widgets, and so on.
Always call findViewById() on something that is guaranteed to give you a unique result. In this case — as with ListView, GridView, RecyclerView, etc. — you need to use other approaches to find the correct row View, then call findViewById() on that View to get at its child widgets.

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Replace code: TableRow tr = (TableRow) view.findViewById(R.id.tr_row); tl.addView(tr); //not working, obviously im missing something with View tr = inflater.inflate(R.layout.table_row_layout, null,false); tl.addView(tr); //not working, obviously im missing something

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