Develop Reference

Inflating View into LinearLayout and editing cmponents in this view

I am trying to add multiple LinearLayouts into one declared in xml. Everyone has 3 textView which will be edited in code. My problem is, when i am inflating xml layout to View object in code, all margins are ignored. My second question:
How can i dynamically set ids to textViews and then edit text in it?
LinearLayout xml which is inflating:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/pointsAwaiting"
android:layout_marginTop="40dp"
android:background="#drawable/background_blue"
android:orientation="horizontal"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:padding="10dp">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:textColor="#FFFFFF"
android:textSize="20dp" />
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:textColor="#FFFFFF"
android:textSize="15dp" />
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="2"
android:padding="10dp"
android:textColor="#FFFFFF"
android:textSize="20dp" />
</LinearLayout>
He is inflating into this piece of code:
<
ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background"
tools:context="pl.com.qiteq.zielonomocni_rework.HistoryActivity">
<LinearLayout
android:id="#+id/mainView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="16dp">
<LinearLayout
android:id="#+id/historyView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
</ScrollView>
And finnaly java code: (loop counter is for example)
LinearLayout mainView = (LinearLayout) findViewById(R.id.historyView);
for (int i=0; i<=2; i++){
View layout = View.inflate(this, R.layout.history_bar, null);
mainView.addView(layout);
}

The reason all your margins are being ignored is that you are passing null into your inflater here:
View layout = View.inflate(this, R.layout.history_bar, null);
When you do this all the LayoutParams of your view are thrown away. You should replace it with:
View layout = inflater.inflate(this, R.layout.history_bar, mainView, false);
To set text in the TextViews you don't need to set a different id for each one, just give each one an id. Then in your loop you can do something like:
List<TextView> textViews = new ArrayList<>();
LayoutInflater inflater = LayoutInflater.from(this);
for (int i=0; i<=2; i++){
View layout = inflater.inflate(this, R.layout.history_bar, mainView, false);
mainView.addView(layout);
TextView textView = (TextView) layout.findViewById(R.id.text1);
textViews.add(textView);
}
You would then have a reference to each of your TextViews in the List

How to update the textview dynamically created textview in childlayout?

LinearLayout lay1 = (LinearLayout) findViewById(R.id.lay1);
for(int i=0;i<list1.size();i++) {
View child = lay1.getChildAt(i);
LinearLayout lay3 = (LinearLayout) child.findViewById(R.id.lay3);
for (j = 0; j <list2.size(); j++) {
View child1 = lay3.getChildAt(j);
// View hiddenInfo11 = getActivity().getLayoutInflater().inflate(R.layout.add_inner_item, lay3 , false);
final TextView name = (TextView) child1.findViewById(R.id.name);
name.setText("new");
}
}
XML Layout:
<LinearLayout
android:id="#+id/lay1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:orientation="horizontal">
</LinearLayout>
<LinearLayout
android:id="#+id/lay2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:background="#color/white"
android:orientation="horizontal">
</LinearLayout>
add_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<LinearLayout
android:id="#+id/lay3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
add_inner_item.Xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
>
<TextView android:id="#+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="" />
</LinearLayout>
Added View Dynamically using the following method.
for(int i=0;i<list.size();i++) {
View hiddenInfo = getActivity().getLayoutInflater().inflate(R.layout.add_item, lay, false);
LinearLayout lay3 = (LinearLayout) hiddenInfo.findViewById(R.id.lay3);
lay1.addView(hiddenInfo);
for (j = 0; j < list2.size(); j++) {
View hiddenInfo1 = getActivity().getLayoutInflater().inflate(R.layout.add_inner_item, lay3, false);
final TextView name = (TextView) hiddenInfo1.findViewById(R.id.name);
name.setText(list2.get(j).get("Name"));
lay3.addView(hiddenInfo1);
}
I have one Layout with creating dynamically and I want to update the child textview from outside of the button click view.I have tried this code.But nothing is changed.Can anyone give suggestion to this sample.

You are looking for "lay2" inside the "lay1" container. According to your XML layout, they are not nested, so you won't be able to find it this way. Change it to this:
LinearLayout lay2 = (LinearLayout) findViewById(R.id.lay2);
You should get the actual lay2 container. I'm not sure whether the text views are there though since I have seen your code for the views' creation.
EDIT:
I've not specified a parent - you should use the Activity for this. Something like:
LinearLayout lay2 = (LinearLayout) MyActivity.this.findViewById(R.id.lay2);

Android: How to make button on candidate view in softkeyboard?

I want to make candidateView inside button but
you see log cat:
please share code
My Code
SoftKeyboard.java
#Override
public View onCreateCandidatesView() {
LayoutInflater li = (LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View wordBar = li.inflate(R.layout.wordbar, null);
LinearLayout ll = (LinearLayout) wordBar.findViewById(R.id.words);
Button btn = (Button) wordBar.findViewById(R.id.button1);
btn.setOnClickListener(this);
mCandidateView = new CandidateView(this);
mCandidateView.setService(this);
setCandidatesViewShown(true);
mCandidateView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
ll.addView(mCandidateView);
return wordBar;
}
I want to make like this:
Layout wordBar.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/words"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
Thanks for advance

See this line
LinearLayout ll = (LinearLayout) wordBar.findViewById(R.id.words);
You are casting a TextView into LinearLayout
<TextView
android:id="#+id/words"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
R.id.words is a TextView
Solution
Add an id to your LinearLayout
Example :android:id="#+id/wordsLayout"
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:id="#+id/wordsLayout"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="#+id/words"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
And use that id
LinearLayout ll = (LinearLayout) wordBar.findViewById(R.id.wordsLayout);

How to programmatically (dynamically) center a LinearLayout inside a RelativeLayout?

I want to dynamically center a LinearLayout view inside its RelativeLayout parent and so I want to use android.R.attr.layout_centerInParent.
How do I apply it?
I tried the following but the child view does not appear at all.
child view
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:id="#+id/text1"
android:textSize="16sp"
android:textStyle="bold"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<TextView android:id="#+id/text2"
android:textSize="16sp"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
parent view
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/parent_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center">
<FrameLayout
android:id="#+id/my_preview"
android:layout_width="match_parent"
android:layout_height="407dp" >
</FrameLayout>
<include
android:id="#+id/my_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="0dp"
android:layout_marginTop="408dp"
layout="#layout/my_bar" />
</RelativeLayout>
in my activity
LayoutInflater inflater = (LayoutInflater) this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
RelativeLayout rootView = (RelativeLayout) inflater.inflate(id, null);
LinearLayout textBox = (LinearLayout) inflater.inflate(R.layout.child_view, null);
TextView line2 = (TextView) textBox.findViewById(R.id.text2);
line2.setText("hahahaha");
TextView line1 = (TextView) textBox.findViewById(R.id.text1);
line1.setText("rrrrrrrrrr");
RelativeLayout.LayoutParams rlp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
rlp.addRule(android.R.attr.layout_centerInParent);
textBox.setLayoutParams(rlp);
rootView.addView(textBox);
setContentView(rootView);
I changed the child view to a RelativeLayout but still cannot see the child view.

For some reason, android.R.attr.layout_centerInParent fails.
I used
rlp.addRule(RelativeLayout.CENTER_IN_PARENT);
and it worked!

adjusting the position of a linear layout

Here is the result of my layout
My problem is that I don't want the distance between "new asset" ( witch shows when clicking on the button new asset) and "old asset" to be too long , "old asset" has to be just below the button and "new asset" should be placed just on top of old asset when clicking on the button .
Here is my xml code :
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scroller"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true" >
<LinearLayout
android:id="#+id/contain"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.01"
android:orientation="vertical"
android:padding="10dp" >
<TextView
android:id="#+id/a"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Build a list of significant assets for the organization"
android:textSize="14sp"
android:textStyle="bold" >
</TextView>
<Button
android:id="#+id/addasset"
style="#style/btnStyleBlue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text=" + add new asset" />
<LinearLayout
android:id="#+id/newa"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_weight="0.01"
android:orientation="vertical"
android:padding="10dp" >
</LinearLayout>
<LinearLayout
android:id="#+id/old"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_weight="0.01"
android:layout_gravity="top"
android:orientation="vertical"
android:padding="10dp" >
</LinearLayout>
</LinearLayout>
</ScrollView>
and my java code :
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.assets, container, false);
final LinearLayout newa = (LinearLayout) rootView
.findViewById(R.id.newa);
final LinearLayout old = (LinearLayout) rootView
.findViewById(R.id.old);
Button add_asset = (Button) rootView.findViewById(R.id.addasset);
add_asset.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
TextView tv1 = new TextView(v.getContext());
tv1.setText("New asset ");
tv1.setTextSize(14);
tv1.setTypeface(null, Typeface.BOLD);
tv1.setPadding(0, 15, 0, 10);
newa.addView(tv1);
}
});
TextView tv = new TextView(rootView.getContext());
tv.setText("old asset ");
tv.setTextSize(14);
tv.setTypeface(null, Typeface.BOLD);
tv.setPadding(0, 15, 0, 10);
old.addView(tv);
return rootView;
}

First of all, I think you are misunderstanding weights. The parent layout should have a weightSum then give child Views weights to equal that some to distribute the amount of space they take up according to what you need.
Second, you have android:padding="10dp" in each LinearLayout so there will effectively be 20dp padding between each. Remove those if you don't want that space.
You have android:layout_height="match_parent" in what appears to be an empty LinearLayout. This looks like it could be removed.
I think the weight is probably what is giving you the most trouble. Remove that
However, I think I would use a RelativeLayout, you could have the two LinearLayouts still if you want, and specify android:layout_below="#+id/contain" to put the second LinearLayout below the first
Also note that fill_parent is deprecated and you should use match_parent instead

Change xml code of linear layouts to this
<LinearLayout
android:id="#+id/newa"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp" >
</LinearLayout>
<LinearLayout
android:id="#+id/old"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:orientation="vertical"
android:padding="10dp" >
</LinearLayout>