CODEWITHSUNDEEP
androidandroid-layoutandroid-linearlayoutandroid-scrollview
Shai Zarzewski
Shai Zarzewski

Reputation: 1698

adding a dynamic linearlayout to the current view android

I am trying to add a linearlayout to a scrolview this is my code the code compiles, but it doesn't show me the new layout

this is the original layout (that i want to add to it)

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ScrollView01"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical" 

android:layout_margin="15dp"
android:layout_marginTop="15dp">

<LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="10dp"
    android:paddingLeft="10dp"
    android:paddingRight="10dp" 
     android:id="@+id/ViewHistoryImageLayout">

    <ImageView
        android:id="@+id/HistoryImage"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="0.76"
        android:gravity="center"
        android:padding="10dp"
        android:src="@drawable/upload" 
        android:contentDescription="@string/HistoryImage"/>

    <TextView
        android:id="@+id/TranslatedText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="0.12"
        android:paddingBottom="10dp"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:text="@string/translateImageButton" />

</LinearLayout>

and this is the layout that i want to add several times:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/TranslationMenuLayout" >

<TextView
    android:id="@+id/textView1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Medium Text"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<RatingBar
    android:id="@+id/ratingBar1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:numStars="5" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="TextView" />

</LinearLayout>

and the java code for adding the new layout is:

setContentView(R.layout.activity_view_history_image);
ScrollView sv = new ScrollView(this);
LayoutInflater inflater = (LayoutInflater) getSystemService( Context.LAYOUT_INFLATER_SERVICE );
View ll = inflater.inflate(R.layout.translation_menu, null);
sv.addView(ll);

the code compiles fine, and the app is running but nothing happens is there a problem with one of the .xml files?

tnx

Upvotes: 4

Views: 7319

Answers (3)

K_Anas
K_Anas

Reputation: 31466

Use a LayoutInflator.

LayoutInflater class is used to instantiate layout XML file into its corresponding View objects.

In other words, it takes as input an XML file and builds the View objects from it.

ScrollView sv = new ScrollView(this);
LayoutInflater layoutInflater = (LayoutInflater) getSystemService( Context.LAYOUT_INFLATER_SERVICE );   
LinearLayout ll = (LinearLayout) li.inflate(translation_menu, this);  
sv.addView(ll);

Upvotes: 1

Nirav Tukadiya
Nirav Tukadiya

Reputation: 3427

  LayoutInflater li = LayoutInflater.from(context);
  LinearLayout ll = (LinearLayout) li.inflate(R.layout.translation_menu, this)

This is the Correct way.

Upvotes: 1

Blackbelt
Blackbelt

Reputation: 157487

you should use an inflater, change:

LinearLayout ll = new LinearLayout(R.layout.translation_menu);

with

LayoutInflater inflater = (LayoutInflater) getSystemService( Context.LAYOUT_INFLATER_SERVICE );
View ll = inflater.inflate(R.layout.translation_menu, null);
sv.addView(ll);

The LayoutInflater creates a View object from the corresponding XML file.

Upvotes: 5

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