Develop Reference

How to get value from a TextView which is in a ListView without any custom adapters?

I have a ListView with a TextView (which has an integer as string) and a Seekbar.
I need to extract the integer value and set it to the Seekbar.
Unfortunately, when I do this, I get a NullPointer exception because the content that populates the ListView item is not recognized by the onCreateView of the PlaceholderFragment.
String progressValue = percentileTextView.getText().toString();
bar.setProgress(Integer.parseInt(progressValue));
I have an activity layout for this activity, then a fragment layout which contains the listview and then I have a content.xml where the actual TextView is present. My question is how to reference this TextView? Am I doing this right, i.e. Activity layout contains a ConstraintLayout with Toolbars etc, then the Fragment Layout contains the ListView and I am using a separate content.xml and applying that to the ListView via a SimpleAdapter.
newAdapter = new SimpleAdapter(getContext(), newList,
R.layout.content, new String[] {
"name",
"percent"
},
new int[] {
R.id.name1,
R.id.percentile1
});
I hope you understand my problem.
When I do the following, it works (i.e. Android Studio understand that is the TextView) - but throws a null pointer exception upon build.
TextView percentileTextView = (TextView) rootView.findViewById(R.id.percentile1);
UPDATE 1 for pskink:
Newlist contents:
[{TA=Item1, IA=46}, {TA=Item2, IA=98}, {TA=Item3, IA=70}, {TA=Item4, IA=54}, {TA=Item5, IA=99}, {TA=Item6, IA=98}]
Row item layout (content.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="wrap_content"
android:orientation="vertical"
android:padding="#dimen/activity_horizontal_margin">
<TextView
android:id="#+id/name1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:textStyle="bold"
android:textColor="#color/colorAccent" />
<RelativeLayout
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:padding="5dp">
<TextView
android:id="#+id/greater_than"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#5d5d5d"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:text="#string/greater_than" />
<TextView
android:id="#+id/percentile1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#5d5d5d"
android:layout_toRightOf="#id/greater_than"
android:layout_toEndOf="#id/greater_than"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#5d5d5d"
android:layout_toRightOf="#id/percentile1"
android:layout_toEndOf="#id/percentile1"
android:text="#string/percentile_text"/>
</RelativeLayout>
<SeekBar
android:id="#+id/seekBar2"
android:paddingTop="12dip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="end|bottom"
android:paddingTop="12dip"
android:orientation="horizontal">
<ImageView
android:contentDescription="info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#mipmap/someimg" />
</LinearLayout>
</LinearLayout>

How should inflating go right way?

I need to have like several listviews on a scrollview which Android doesn't allow me to do so I decided to make it manually to simply inflate some listrows on a vertical LinearLayout, but everything goes not the right way
private void fillData(final ViewGroup parent, final ArrayList<Person> array ){
for (int i=0;i<array.size();i++){
final View view = lf.inflate(R.layout.personal_listrow, parent,true);
parent.setBackgroundColor(getActivity().getResources().getColor(R.color.background_light_darker));
view.setBackgroundColor(getActivity().getResources().getColor(R.color.background_night_lighter));
TextView tvName=(TextView) view.findViewById(R.id.tvName);
TextView tvStatus=(TextView) view.findViewById(R.id.tvStatus);
TextView tvGender=(TextView) view.findViewById(R.id.tvGender);
//fill textviews with info, set the onClickListeners and so on
}
So what I get - the view.setBackgroundColor paints parent as well .
parent is a vertical LinearLayout, view is horizontal LinearLayout - it's strange that I don't paint inflated element only so please explain me why
The next thing - after I add something to array - 1st element changes and all the rest is with unchanged text. However, I walked through the code with debugger - it passes every element and sets text.
The clicklisteners works on the 1st element only..
Would you plz explain
here's vertical , parent layout - nothing special:
<LinearLayout
android:id="#+id/rodll"
android:layout_marginTop="16dp"
android:layout_marginBottom="8dp"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
the inflateable listrow is nothing special also :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:gravity="center_vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<TextView
android:id="#+id/tvStatus"
android:layout_width="0dp"
android:layout_weight=".3"
android:maxLines="1"
android:layout_height="wrap_content"
android:text="tvSt" />
<TextView
android:id="#+id/tvName"
android:layout_weight="1"
android:layout_width="0dp"
android:maxLines="1"
android:layout_height="wrap_content"
android:text="tvName" />
<TextView
android:id="#+id/tvGender"
android:layout_weight=".1"
android:layout_width="0dp"
android:maxLines="1"
android:layout_height="wrap_content"
android:text="tvGender" />
<com.andexert.library.RippleView
android:id="#+id/removeRipple"
xmlns:ripple="http://schemas.android.com/apk/res-auto"
android:layout_marginLeft="30dp"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_marginRight="7.5dip"
android:padding="3dp"
ripple:rv_alpha="255"
ripple:rv_zoom="true"
ripple:rv_zoomScale="0.8"
ripple:rv_type="rectangle">
<ImageView
android:id="#+id/remove_icon"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/remove" />
</com.andexert.library.RippleView>
<com.andexert.library.RippleView
android:id="#+id/addRipple"
xmlns:ripple="http://schemas.android.com/apk/res-auto"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_marginRight="7.5dip"
android:padding="3dp"
ripple:rv_alpha="255"
ripple:rv_zoom="true"
ripple:rv_zoomScale="0.8"
ripple:rv_type="rectangle">
<ImageView
android:id="#+id/add_icon"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/add" />
</com.andexert.library.RippleView>
</LinearLayout>
So. what's the problem and how to solve it?

Android - Custom Keyboard on manually inflated listview row not showing

Good day.
I have an android application. In my application, I have a custom listView with 5 columns that are textViews. The user can click the rows, once he does, the row layout will change, changing the last 2 textViews to EditTexts. I then register the new EditTexts onto my custom keyboard taken from this example - kindly note that I did a functional copy-paste of his example with regards to the custom keyboard class and how to make it work in the main layout. However, when I click the EditText in the row, my custom keyboard does not show up at all.
I have a global variable as such:
CustomKeyboard mCustomKeyboard;
And in my onCreate() method in the activity, I do:
mCustomKeyboard= new CustomKeyboard(this, R.id.keyboardview, R.xml.custom_keyboard);
This is my layout, I have the KeyboardView at the bottom of the Layout:
<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:paddingBottom="#dimen/activity_vertical_margin"
tools:context=".SearchResult" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- A lot of views go here, enclosed in my linear layout -->
</LinearLayout>
<android.inputmethodservice.KeyboardView
android:id="#+id/keyboardview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:focusable="true"
android:focusableInTouchMode="true"
android:visibility="gone" />
</RelativeLayout>
Here is the code that changes the layout. What I do is that I take the row values from the old layout, get the new layout search_result_inflate, then set the texts of the new layout using the values I got. Kindly note the mCustomKeyboard.registerEditText(R.id.qtyInputSearchResult); line after inflating the layout:
private void changeLayout(final View view){
//get views from old layout
TextView textViewQuantity = (TextView)view.findViewById(R.id.qtyInput);
TextView textViewDiscountReq = (TextView)view.findViewById(R.id.discInput);
TextView textViewName = (TextView)view.findViewById(R.id.dialogItemName);
TextView textViewPrice = (TextView)view.findViewById(R.id.price);
TextView textViewDiscount = (TextView)view.findViewById(R.id.discount);
//store values in strings
String itemName = textViewName.getText().toString();
String itemPrice = textViewPrice.getText().toString();
String itemDiscount = textViewDiscount.getText().toString();
String itemQty = textViewQuantity.getText().toString();
String itemDisc = textViewDiscountReq.getText().toString();
//set the view to gone
textViewQuantity.setVisibility(View.GONE);
textViewDiscountReq.setVisibility(View.GONE);
textViewName.setVisibility(View.GONE);
textViewPrice.setVisibility(View.GONE);
textViewDiscount.setVisibility(View.GONE);
//get the old layout
LinearLayout ll_inflate = (LinearLayout)view.findViewById(R.id.search_result_layout);
//get the inflate/new view
View child = getLayoutInflater().inflate(R.layout.search_result_inflate, null);
//get the views in the new view, populate them
TextView newName = (TextView)child.findViewById(R.id.dialogItemName);
newName.setText(itemName);
TextView newDiscount = (TextView)child.findViewById(R.id.discount);
newDiscount.setText(itemDiscount);
TextView newPrice = (TextView)child.findViewById(R.id.price);
newPrice.setText(itemPrice);
EditText qtyInput = (EditText)child.findViewById(R.id.qtyInputSearchResult);
qtyInput.setText(itemQty);
EditText discInput = (EditText)child.findViewById(R.id.discInputSearchResult);
discInput.setText(itemDisc);
//show new layout
ll_inflate.removeAllViews();
ll_inflate.removeAllViewsInLayout();
ll_inflate.addView(child);
mCustomKeyboard.registerEditText(R.id.qtyInputSearchResult);
}
Here is my search_result_inflate.xml file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/search_result_inflate"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:focusable="true"
android:focusableInTouchMode="true"
android:minHeight="50dp"
android:orientation="horizontal"
android:padding="1dip"
android:weightSum="1" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:focusable="true"
android:focusableInTouchMode="true"
android:orientation="horizontal"
android:padding="1dip" >
<TextView
android:id="#+id/dialogItemName"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_marginRight="2dp"
android:layout_weight="0.54"
android:gravity="center"
android:text="Item Name"
android:textSize="23sp" />
<TextView
android:id="#+id/price"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_marginRight="2dp"
android:layout_weight="0.14"
android:gravity="center"
android:text="Price"
android:textSize="23sp" />
<TextView
android:id="#+id/discount"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_marginRight="2dp"
android:layout_weight="0.10"
android:gravity="center"
android:text="Discount"
android:textSize="23sp" />
<EditText
android:id="#+id/qtyInputSearchResult"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_marginRight="2dp"
android:layout_weight="0.14"
android:background="#layout/edittext_selector"
android:gravity="center"
android:hint="qtyInput"
android:textColorHighlight="#color/white_opaque"
android:textSize="23sp" >
</EditText>
<EditText
android:id="#+id/discInputSearchResult"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.11"
android:background="#layout/edittext_selector"
android:focusable="true"
android:focusableInTouchMode="true"
android:gravity="center"
android:hint="discInput"
android:textColorHighlight="#color/white_opaque"
android:textSize="23sp" />
</LinearLayout>
</LinearLayout>
As you can see, I have 2 editTexts and I registered qtyInputSearchResult to the custom keyboard class. However, the custom keyboard does not show up.
I also tried to use the custom keyboard class on an editText in another activity and it works just fine. Am I missing something here? I'm confused as to why the custom keyboard does not show up properly.
Any help is very much appreciated, thank you.

Got it, I placed the keyboard layout in the search_result_inflate.xml like so:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/search_result_inflate"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:focusable="true"
android:focusableInTouchMode="true"
android:minHeight="50dp"
android:orientation="horizontal"
android:padding="1dip"
android:weightSum="1" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:focusable="true"
android:focusableInTouchMode="true"
android:orientation="horizontal"
android:padding="1dip" >
<!-- a lot of components here -->
</LinearLayout>
<android.inputmethodservice.KeyboardView
android:id="#+id/keyboardview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:focusable="true"
android:focusableInTouchMode="true"
android:visibility="gone" />
</RelativeLayout>

ImageView dissapearing after setting an ID

I'm programatically adding views into my layout inside a for loop.
The xml file of the layout I'm adding is like this one:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout_consulta_item_list"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ImageView
android:id="#+id/imageView_consulta_action"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/LinearLayout_dados_consulta"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/LinearLayout_dados_consulta"
android:layout_centerHorizontal="true"
android:layout_centerInParent="false"
android:adjustViewBounds="true"
android:maxWidth="70dp"
android:padding="10dp"
android:scaleType="centerInside"
android:src="#drawable/estrela_off" />
<LinearLayout
android:id="#+id/LinearLayout_dados_consulta"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:layout_toLeftOf="#+id/imageView_consulta_action"
android:background="#660000"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:text="#string/origem"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#ffaaaa"
android:textSize="10sp" />
<TextView
android:id="#+id/textView_origem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="YYY"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#eeeeee" />
<TextView
android:id="#+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:layout_marginLeft="10dp"
android:layout_marginRight="5dp"
android:text="#string/data_ida"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#ffaaaa"
android:textSize="10sp" />
<TextView
android:id="#+id/textView_data_ida"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2014-05-05"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#eeeeee"
android:textSize="15sp" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
In my main_activity, I call the constructor:
for (int i=0;i<resultList.length-1;i++){
RelativeLayout viewToLoad = (RelativeLayout)LayoutInflater.from(this).inflate(R.layout.consulta_item, null);
ll.addView(viewToLoad);
ImageView ImgConsulta_action = (ImageView)findViewById(R.id.imageView_consulta_action);
LinearLayout dados_consulta = (LinearLayout)findViewById(R.id.LinearLayout_dados_consulta);
dados_consulta.setOnLongClickListener(...);
ImgConsulta_action.setOnLongClickListener(...);
Well, I keep setting SetText for all the views in the layout and so on.
But, in order to make the setOnClickListener to work for each view, I must set a id to the views inside the for loop:
dados_consulta.setId(4000+i);
ImgConsulta_action.setId(5000+i); //(*lastline)
The weird thing is happening is that:
If I comment this last line, the layout is inserted correctly with the imageview showing a star as it is suposed to do and the listener at "dados_consulta" works fine.
But if I remove the comment at this last line, the star dissapear from the screen.
Can anybody help me to understand what is going on?

I had an layout params referenced to the ID of the layout elements at the original view.
Since I have to change the ID dynamically while I'm adding this layout several times into my activity, I also need to reset the layoutparams to the new Ids.
So, I added this lines:
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams)ImgConsulta_action.getLayoutParams();
params.addRule(RelativeLayout.ALIGN_TOP, dados_consulta.getId());
params.addRule(RelativeLayout.ALIGN_BOTTOM, dados_consulta.getId());
ImgConsulta_action.setLayoutParams(params);
RelativeLayout.LayoutParams paramsDadosConsulta = (RelativeLayout.LayoutParams)dados_consulta.getLayoutParams();
paramsDadosConsulta.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
paramsDadosConsulta.addRule(RelativeLayout.LEFT_OF, ImgConsulta_action.getId());
dados_consulta.setLayoutParams(paramsDadosConsulta);
Now it's working perfectly.
Notice that the problem is not about the layout disappearing it was about a layout get in front of the other one. (making this other one invisible)

android layout with visibility GONE

Four views are using same xml. I want to show a linear layout for view 1 only.
I put android:visibility="gone" in xml. And then I am doing the following for view 1-
LinearLayout layone= (LinearLayout) view.findViewById(R.id.layone);
layone.setVisibility(View.VISIBLE);
But that doesn't set the visibility to visible.
Isn't it possible to show the view once its declared GONE in xml ?
I don't want to converse the logic by just doing,
layone.setVisibility(View.GONE);
in each of the three views except view 1.
Ideas or comments?
UPDATE:
My xml -
<TextView
android:id="#+id/layone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Previous Page"
android:textColor="#000000"
android:textSize="16dp"
android:paddingLeft="10dp"
android:layout_marginTop="10dp"
android:visibility="gone" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:padding="10dp"
android:gravity="center_vertical"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:tag="PrevEntries"
android:id="#+id/laytwo"
android:layout_marginTop="10dp"
android:background="#layout/roundedtext"
android:visibility="gone" >
<TextView
android:id="#+id/laythree"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Previous Page"
android:textColor="#000000"
android:textSize="18dp"
android:gravity="center"
android:textStyle="bold" />
</LinearLayout>

<TextView
android:id="#+id/layone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Previous Page"
android:textColor="#000000"
android:textSize="16dp"
android:paddingLeft="10dp"
android:layout_marginTop="10dp"
android:visibility="gone" />
layone is a TextView.
You got your id wrong.
LinearLayout layone= (LinearLayout) view.findViewById(R.id.laytwo);// change id here
layone.setVisibility(View.VISIBLE);
should do the job.
or change like this to show the TextView:
TextView layone= (TextView) view.findViewById(R.id.layone);
layone.setVisibility(View.VISIBLE);

Done by having it like that:
view = inflater.inflate(R.layout.entry_detail, container, false);
TextView tp1= (TextView) view.findViewById(R.id.tp1);
LinearLayout layone= (LinearLayout) view.findViewById(R.id.layone);
tp1.setVisibility(View.VISIBLE);
layone.setVisibility(View.VISIBLE);

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/activity_register_header"
android:minHeight="50dp"
android:orientation="vertical"
android:visibility="gone" />
Try this piece of code..For me this code worked..

Kotlin Style way to do this more simple (example):
isVisible = false
Complete example:
if (some_data_array.details == null){
holder.view.some_data_array.isVisible = false}

put this attribute in your xml view for Gone
android:visibility="gone"
put this attribute in your xml view for Show
android:visibility="visible"
Example
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="#font/futura_medium_bt"
android:text="•Unlock all graphics"
android:textAllCaps="true"
android:visibility="gone"
android:textColor="#color/black"
android:textSize="#dimen/_12ssp" />