I'm trying to create custom layout for android. It normally draws on screen, but without inner views. Draws only my group_box.xml. How i can get access from my custom layout to inner views (TextView with id test) or how to draw they?
main.xml
<my.example.GroupBox
android:layout_width="match_parent"
android:layout_height="40sp">
<TextView android:text="TEST"
android:id="#+id/test"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</my.example.GroupBox>
group_box.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
style="#style/groupbox">
<LinearLayout style="#style/groupboxContent"
android:id="#+id/content"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<TextView style="#style/groupboxLabel"
android:id="#+id/caption"
android:text="#string/visit"/>
</RelativeLayout>
GroupBox.java
public class GroupBox extends LinearLayout {
public GroupBox(Context context) {
super(context);
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = layoutInflater.inflate(R.layout.group_box, this);
}
public GroupBox(Context context, AttributeSet attrs) {
super(context, attrs);
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = layoutInflater.inflate(R.layout.group_box, this);
}
}
you can access to the elements via setters and getters.
put this in your GroupBox.java
caption = (TextView) findViewById(R.id.caption);
public void setLabel(CharSequence text) {
caption.setText(text);
}
add an id to your control in xml:
<my.example.GroupBox
android:layout_width="match_parent"
android:layout_height="40sp"
android:id="mycontrol">
<TextView android:text="TEST"
android:id="#+id/test"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</my.example.GroupBox>
then find your control in the main activity and do this:
yourcontrol = (GroupBox) findViewById(R.id.mycontrol)
yourcontrol.setLabel("test");
Related
I am trying to add my custom view to the main activity's xml.
I have created the following xml for the view:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Testing custom view"
android:textSize="20dp" />
</LinearLayout>
And created the following class in which the above xml is inflated:
public class TestView extends LinearLayout {
public TestView(Context context, #Nullable AttributeSet attrs) {
super(context, attrs);
View.inflate(context, R.layout.test_name, null);
}
And in the xml of the main activity I have added the custom view like below:
<LinearLayout 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"
tools:context="com.example.myapplication.MainActivity">
<com.example.myapplication.TestView
android:id="#+id/submit_area"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
When I am running the app, I am getting an empty screen. It's not showing the textview which displays "Testing custom view".
Any help would much appreciated.
Thanks
Your view inflation code in your custom view looks wrong.Try it the way given below.
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.view_color_options, this, true);
I create a custom view for actionbar.When i use <inclued layout=#layout/XXXXX />is ok.However ,when i use LayoutInflater to inflate the view ,it cannot inflate it .Here is my code
public class TitleLayout extends LinearLayout {
// private Button btn_back;
// private Button btn_edit;
public TitleLayout(Context context, AttributeSet attrs) {
super(context, attrs);
LayoutInflater.from(context).inflate(R.layout.view_title,this);
}
}
TitleLayout is my custom view
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/btn_back"
android:layout_gravity="center"
android:text="Back"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="#+id/text_title"
android:text="This is a title"
android:layout_gravity="center"
android:textSize="30sp"
android:gravity="center"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:id="#+id/btn_edit"
android:text="Edit"/>
</LinearLayout>
It is a simple view; When i use <inclued /> to inflate is ok. But use LayoutInflate will show nothing.
<!--<include-->
<!--layout="#layout/view_title"/>-->
<com.example.administrator.test.TitleLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
</com.example.administrator.test.TitleLayout>
really appreciate your help!!!
try this
public class TitleLayout extends LinearLayout {
public TitleLayout (Context context) {
super(context);
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layoutInflater.inflate(R.layout.your_layout, this);
}
}
I am working on an android application that will get data from an xml file and insert it in a listview
but I want to change the UI and instead of displaying the data in a listview vertically, I want to display them horizontally in a scrollview
My question is if I have the following code
<HorizontalScrollView
android:id="#+id/horizontalScrollView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scrollbars="none">
<LinearLayout
android:id="#+id/linearLayout1"
android:orientation="horizontal"
android:layout_height="wrap_content"
android:layout_width="wrap_content" android:padding="2dp">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:layout_width="wrap_content"
android:id="#+id/imageView11"
android:layout_height="wrap_content"
android:src="#drawable/i1"/>
<TextView
android:id="#+id/TextOnImage11"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Fantasia Reviews"
android:layout_alignParentBottom="true"
android:paddingLeft="2dp"
android:background="#drawable/txt_bg"
android:textSize="10dp"
android:paddingTop="2dp"
android:textColor="#FFFFFF"
android:textStyle="bold"
android:width="0dp" />
</RelativeLayout>
</LinearLayout>
</HorizontalScrollView>
how can I add more images and text dynamically from the java code ??
Thank you
I presume that your intent would be to add another RelativeLayout with it's own image/text pair straight after the RelativeLayout that you have shown in your code sample?
In that case as it is not simply adding one more view, I would take the time to create a class that represents your "structure" that you want to insert.
e.g. A class called "TextImagePair" that extends "RelativeLayout"
public class TextImagePair extends RelativeLayout {
public ReportDetailRow(Context context){
super(context);
}
public TextImagePair(Context context,AttributeSet attributeSet){
super(context, attributeSet);
}
public TextImagePair(Context context,AttributeSet attributeSet, int i){
super(context, attributeSet,i);
}
public TextImagePair(Context context, AttributeSet attributeSet, String text, int drawableResource) {
super(context, attributeSet);
// Inflate the layout
LayoutInflater inflator = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflator.inflate(R.layout.lay_textimagepair, this);
TextView tvText = (TextView)this.findViewById(R.id.layTextImagePair_textview);
tvText.setText(text);
ImageView imgView = (ImageView)this.findViewById(R.id.layTextImagePair_imageview);
imgView.setDrawable(getResources().getDrawable(drawableResource));
}
}
You would then have a seperate xml layout file (named lay_textimagepair in my code) that just contains the text and image views.
You would then add this to your view at run time with:
LinearLayout parent = (LinearLayout)findViewById(R.id.layParentView_liniearlayout);
TextImagePair tip = new TextImagePair(null,null,"Blah Blah Blah",R.drawable.something);
parent.addView(tip);
Sorry if there are any bugs in the above code but I am writing it without access to Eclipse!
I am trying to create a compound viewgroup after inflating the group from an XML file.
The viewgroup is composed as: A LinearLayout Root, 2 child LinearLayouts. I am able to see the layout correctly in the layout editor; however, when I attempt to add a view (say a button) from the editor, the view does not show up and the application immediately force closes. I was told i may need to Override the onLayout method to correctly draw the view components but I'm am fairly confused.
My Class:
public class FocusBox extends LinearLayout {
private LinearLayout rootLayout,
contentLayout,
topLayout;
public FocusBox(Context context)
{
super(context, null);
}
public FocusBox(Context context, AttributeSet attrs) {
super(context, attrs);
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.focus_box, this);
rootLayout = (LinearLayout)findViewById(R.id.focusBoxParent);
contentLayout = (LinearLayout)findViewById(R.id.focusBottom);
topLayout = (LinearLayout)findViewById(R.id.focusTop);
}
}
And the 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:padding="4dp"
android:id="#+id/focusBoxParent"
android:orientation="vertical">
<LinearLayout
android:background="#drawable/gradients"
android:layout_weight=".1"
android:gravity="center"
android:id="#+id/focusTop"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:text="TextView"
android:id="#+id/focusTitle"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_width="wrap_content"/>
</LinearLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_weight=".9"
android:id="#+id/focusBottom"
android:background="#drawable/gradient2"
android:orientation="horizontal">
</LinearLayout>
</LinearLayout>
Generally, if you inflate a layout from a valid XML you shouldn't get an error. You should do a clean build and re-deploy the app again.
Also check if you're using the correct class in the import statement in other classes (you could be using a FocusBox from some 3rd-party library instead of the one you made)
I am trying to refer to a custom View in the helloWorld XML layout but I get the following exception:
Error inflating class acme.my.MyTextView.
However, I am able to instantiate the view and add it to the main content view manually. The custom View is built from it's own XML layout. How do I get this to work?
public class MyTextView extends LinearLayout {
MyTextView(Context context){
super(context);
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layoutInflater.inflate(R.layout.my_text_view,this);
}
MyTextView(Context context, AttributeSet attrs){
super(context, attrs);
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layoutInflater.inflate(R.layout.my_text_view,this);
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/hello"
/>
<view class = "acme.my.MyTextView"
android:id="#+id/myView"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
The constructors aren't public.
:(
you have to call it like this
<com.example.MyLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
Also make your constructors public