List Preference

Not Complete

LISTview

ListView is a view group that displays a list of scrollable items. The list items are automatically inserted to the list using an Adapter that pulls content from a source such as an array or database query and converts each item result into a view that's placed into the list.

divider

Drawable or color to draw between list items.

May be a color value, in the form of "#rgb", "#argb", "#rrggbb", or "#aarrggbb".

code - android:divider="#888888"

dividerHeight

Height of the divider. Will use the intrinsic height of the divider if this is not specified.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

code - android:dividerHeight="14sp"

Text Alignment

Set Text Left, Right, Centre and more in EditText

code - android:textAlignment="center"

Background

Set the background color as a image, color.

code - android:background="@drawable/abc"

Text Direction

Set the direction of the text

rtl for Right to Left direction.

code - android:textDirection="rtl"

Visibility

show or hide the edittext

Must be 'Visible', 'Invisivble' or 'Gone'.

code  - android:visibility="invisible"

Margin

Specifies extra space on the bottom side of this view. This space is outside this view's bounds. Margin values should be positive.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

Code - android:layout_margin="46dp"

XML Attributes
Attribute Name	Related Method	Description
android:layout_marginBottom	setMargins(int,int,int,int)	Specifies extra space on the bottom side of this view.
android:layout_marginEnd	setMarginEnd(int)	Specifies extra space on the end side of this view.
android:layout_marginLeft	setMargins(int,int,int,int)	Specifies extra space on the left side of this view.
android:layout_marginRight	setMargins(int,int,int,int)	Specifies extra space on the right side of this view.
android:layout_marginStart	setMarginStart(int)	Specifies extra space on the start side of this view.
android:layout_marginTop	setMargins(int,int,int,int)	Specifies extra space on the top side of this view.

Padding

Sets the padding, in pixels, of all four edges. Padding is defined as space between the edges of the view and the view's content. A views size will include it's padding. If a background is provided, the padding will initially be set to that (0 if the drawable does not have padding). Explicitly setting a padding value will override the corresponding padding found in the background.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

code - android:padding="16dp"

XML Attributes
Attribute Name	Related Method	Description
android:paddingBottom	setMargins(int,int,int,int)	Sets the padding, in pixels, of the bottom edge; see padding.
android:paddingEnd	setMarginEnd(int)	Sets the padding, in pixels, of the end edge; see padding.
android: paddingLeft	setMargins(int,int,int,int)	Sets the padding, in pixels, of the left edge; see padding.
android: paddingRight	setMargins(int,int,int,int)	Sets the padding, in pixels, of the right edge; see padding.
android: paddingStart	setMarginStart(int)	Sets the padding, in pixels, of the start edge; see padding.
android: paddingTop	setMargins(int,int,int,int)	Sets the padding, in pixels, of the top edge; see padding.

onClick

Name of the method in this View's context to invoke when the view is clicked. This name must correspond to a public method that takes exactly one parameter of type View. For instance, if you specify android:onClick="sayHello", you must declare a public void sayHello(View v)method of your context (typically, your Activity).

Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.

code - android:onClick="method name"

rotation

rotation of the view, in degrees.

Must be a floating point value, such as "1.2".

code  - android:rotation="12"

Attribute                   -                       Description

android:rotationX           -              rotation of the view around the x axis, in degrees.

android:rotationY           -              rotation of the view around the y axis, in degrees.

Save Enabled

If false, no state will be saved for this view when it is being frozen. The default is true, allowing the view to be saved (however it also must have an ID assigned to it for its state to be saved). Setting this to false only disables the state for this view, not for its children which may still be saved.

Must be a boolean value, either "true" or "false".

code - android:saveEnabled="false"

Sound Effect  Enabled

Boolean that controls whether a view should have sound effects enabled for events such as clicking and touching.

Must be a boolean value, either "true" or "false".

code - android:soundEffectsEnabled="true"

Tag

Supply a tag for this view containing a String, to be retrieved later with View.getTag() or searched for with View.findViewWithTag(). It is generally preferable to use IDs (through the android:id attribute) instead of tags because they are faster and allow for compile-time type checking.

Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.

code  -  android:tag="tag name here"

ForeGround

Defines the drawable to draw over the content. This can be used as an overlay. The foreground drawable participates in the padding of the content if the gravity is set to fill.

May be a color value, in the form of "#rgb", "#argb", "#rrggbb", or "#aarrggbb" or image

code - android:foreground="@drawable/abc"

foreGround Gravity

Defines the gravity to apply to the foreground drawable. The gravity defaults to fill.

Must be one or more (separated by '|') of the following constant values.

Constant	Value	Description
top	0x30	Push object to the top of its container, not changing its size.
bottom	0x50	Push object to the bottom of its container, not changing its size.
left	0x03	Push object to the left of its container, not changing its size.
right	0x05	Push object to the right of its container, not changing its size.
center_vertical	0x10	Place object in the vertical center of its container, not changing its size.
fill_vertical	0x70	Grow the vertical size of the object if needed so it completely fills its container.
center_horizontal	0x01	Place object in the horizontal center of its container, not changing its size.
fill_horizontal	0x07	Grow the horizontal size of the object if needed so it completely fills its container.
center	0x11	Place the object in the center of its container in both the vertical and horizontal axis, not changing its size.
fill	0x77	Grow the horizontal and vertical size of the object if needed so it completely fills its container.
clip_vertical	0x80	Additional option that can be set to have the top and/or bottom edges of the child clipped to its container's bounds. The clip will be based on the vertical gravity: a top gravity will clip the bottom edge, a bottom gravity will clip the top edge, and neither will clip both edges.
clip_horizontal	0x08	Additional option that can be set to have the left and/or right edges of the child clipped to its container's bounds. The clip will be based on the horizontal gravity: a left gravity will clip the right edge, a right gravity will clip the left edge, and neither will clip both edges.

foregroundTint

Tint to apply to the foreground. if your foreground is image then overwrite with tint color.

Must be a color value, in the form of "#rgb", "#argb", "#rrggbb", or "#aarrggbb".

android:foregroundTint="#12e7ff"

 foregroundTintMode

Blending mode used to apply the foreground tint. awsm

Must be one of the following constant values.

Constant	Value	Description
src_over	3	The tint is drawn on top of the drawable. [Sa + (1 - Sa)*Da, Rc = Sc + (1 - Sa)*Dc]
src_in	5	The tint is masked by the alpha channel of the drawable. The drawable’s color channels are thrown out. [Sa * Da, Sc * Da]
src_atop	9	The tint is drawn above the drawable, but with the drawable’s alpha channel masking the result. [Da, Sc * Da + (1 - Sa) * Dc]
multiply	14	Multiplies the color and alpha channels of the drawable with those of the tint. [Sa * Da, Sc * Dc]
screen	15	[Sa + Da - Sa * Da, Sc + Dc - Sc * Dc]
add	16	Combines the tint and drawable color and alpha channels, clamping the result to valid color values. Saturate(S + D)

code -  android:foregroundTintMode="add"

//-------------------------------   Scroll bar start here

ScrollIndicators

Defines which scroll indicators should be displayed when the view can be scrolled. Multiple values may be combined using logical OR, for example "top|bottom".

Must be one or more (separated by '|') of the following constant values.

Constant	Value	Description
none	0x00	No scroll indicators are displayed.
top	0x01	Displays top scroll indicator when view can be scrolled up.
bottom	0x02	Displays bottom scroll indicator when vew can be scrolled down.
left	0x04	Displays left scroll indicator when vew can be scrolled left.
right	0x08	Displays right scroll indicator when vew can be scrolled right.
start	0x10	Displays right scroll indicator when vew can be scrolled in the start direction.
end	0x20	Displays right scroll indicator when vew can be scrolled in the end direction.

code - android:scrollIndicators="bottom"

ScrollX

The initial horizontal scroll offset, in pixels.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

code - android:scrollX="14sp"

ScrollY

The initial vertical scroll offset, in pixels.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

code -  android:scrollY="14sp"

 scrollbarAlwaysDrawHorizontalTrack

Defines whether the horizontal scrollbar track should always be drawn.

Must be a boolean value, either "true" or "false".

android:scrollbarAlwaysDrawHorizontalTrack="true"

Below code for vertical

  android:scrollbarAlwaysDrawVerticalTrack="true"

scrollbarDefaultDelayBeforeFade

Defines the delay in milliseconds that a scrollbar waits before fade out.

Must be an integer value, such as "100".

code - android:scrollbarDefaultDelayBeforeFade="100"

scrollbarFadeDuration

Defines the delay in milliseconds that a scrollbar takes to fade out.

Must be an integer value, such as "100".

code - android:scrollbarFadeDuration="100"

scrollbarSize

Sets the width of vertical scrollbars and height of horizontal scrollbars.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

code  - android:scrollbarSize="100dp"

scrollbarStyle

Controls the scrollbar style and position. The scrollbars can be overlaid or inset. When inset, they add to the padding of the view. And the scrollbars can be drawn inside the padding area or on the edge of the view. For example, if a view has a background drawable and you want to draw the scrollbars inside the padding specified by the drawable, you can use insideOverlay or insideInset. If you want them to appear at the edge of the view, ignoring the padding, then you can use outsideOverlay or outsideInset.

Must be one of the following constant values.

Constant	Value	Description
insideOverlay	0x0	Inside the padding and overlaid
insideInset	0x01000000	Inside the padding and inset
outsideOverlay	0x02000000	Edge of the view and overlaid
outsideInset	0x03000000	Edge of the view and inset

scrollbarThumbHorizontal

Defines the horizontal scrollbar thumb drawable.

android:scrollbarThumbHorizontal="@drawable/abc"

scrollbarThumbVertical

Defines the vertical scrollbar thumb drawable.

android:scrollbarThumbVertical="@drawable/abc"

 scrollbarTrackHorizontal

Defines the horizontal scrollbar track drawable.

code - android:scrollbarTrackHorizontal="@drawable/abc"

scrollbarTrackVertical

Defines the vertical scrollbar track drawable.

code - android:scrollbarTrackVertical="@drawable/abc"

scrollbars

Defines which scrollbars should be displayed on scrolling or not.

Must be one or more (separated by '|') of the following constant values.

Constant	Value	Description
none	0x00000000	No scrollbar is displayed.
horizontal	0x00000100	Displays horizontal scrollbar only.
vertical	0x00000200	Displays vertical scrollbar only.

code - android:scrollbars="horizontal"

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Java Code

ArrayAdapter

It is use to store array of data.

        ArrayAdapter arrayAdapter=new ArrayAdapter(context,android.Choose List,array);
       

An adapter is something that knows about the list items and how to represent or draw each list item on the screen.

Above syntax  makes use of ArrayAdapter and its constructor takes 3 parameters having information about the list items

final ArrayAdapter<String> aa;

aa = new ArrayAdapter<String>(this,

                              android.R.layout.simple_list_item_1,

                              todoItems);

First argument is Context to access system services and resources ( you need layout inflater to create list item view )

Second argument defines the layout of the list that defines how the list item appears in listview. Here layout android.R.layout.simple_list_item_1 which is defined by framework is used.

Third argument is the information about the list item, typically this information is used to create view for the list item.

Finally created Adapter is given to the ListView

myListView.setAdapter(aa);

Now ListView calls the functions of Adapter to get the views of list item and populates in the container.

If the list items are changed ( here todo list ) Adapter can let the ListView know about it by calling notifyDataSetChanged.

aa.notifyDataSetChanged();

listView.setAdapter(arrayAdapter);

Program

ListView with ArrayAdapter

MainActivity.java

public class MainActivity extends AppCompatActivity {



    ListView listView;

    String[] ar={"India","Japan","Tokyo"};

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        listView=(ListView)findViewById(R.id.list1);



        ArrayAdapter arrayAdapter=new ArrayAdapter(this,android.R.layout.simple_list_item_1,ar);

        listView.setAdapter(arrayAdapter);

    }



}

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    android:orientation="vertical"

    tools:context="sichlearning.example.com.testone.MainActivity">



   <ListView

       android:id="@+id/list1"

       android:layout_width="match_parent"

       android:layout_height="wrap_content"

       android:textAlignment="center"

       >

   </ListView>

</LinearLayout>

ListView with ArrayAdapter

MainActivity.java

public class MainActivity extends AppCompatActivity {



    ListView listView;

    String[] ar={"India","America","China"};



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        listView=(ListView) findViewById(R.id.list1);



        ArrayAdapter arrayAdapter=new ArrayAdapter(this,android.R.layout.simple_list_item_1,ar);

        listView.setAdapter(arrayAdapter);



       listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

           @Override

           public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

               Toast.makeText(getApplicationContext(),"List Position :"+position,Toast.LENGTH_SHORT).show();

           }

       });

    }



}

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    android:orientation="vertical"

    tools:context="sichlearning.example.com.testone.MainActivity">



   <ListView

       android:id="@+id/list1"

       android:layout_width="match_parent"

       android:layout_height="wrap_content"

       android:background="#12ff66"

      >

   </ListView>

</LinearLayout>

ListView with text and image

MainActivity.java

public class MainActivity extends AppCompatActivity {



    ListView listView;

    String[] web = {

            "Google Plus",

            "Twitter",

            "Windows",

            "Bing",



    } ;

    Integer[] imageId = {

            R.drawable.abc,

            R.drawable.b_default,

            R.drawable.b_focus,

            R.drawable.b_press,

             };



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        listView=(ListView) findViewById(R.id.list1);

        CustomList adapter = new

                CustomList(MainActivity.this, web, imageId);

        listView=(ListView)findViewById(R.id.list1);

        listView.setAdapter(adapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {



            @Override

            public void onItemClick(AdapterView<?> parent, View view,

                                    int position, long id) {

                Toast.makeText(MainActivity.this, "You Clicked at " +web[+ position], Toast.LENGTH_SHORT).show();



            }

        });



    }



}

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    android:orientation="vertical"

    tools:context="sichlearning.example.com.testone.MainActivity">



   <ListView

       android:id="@+id/list1"

       android:layout_width="match_parent"

       android:layout_height="wrap_content"

       android:textAlignment="center"

       >

   </ListView>

</LinearLayout>

CustomList.java

public class CustomList extends ArrayAdapter<String> {



    private final Activity context;

    private final String[] web;

    private final Integer[] imageId;

    public CustomList(Activity context,

                      String[] web, Integer[] imageId) {

        super(context, R.layout.list_single, web);

        this.context = context;

        this.web = web;

        this.imageId = imageId;



    }

    @Override

    public View getView(int position, View view, ViewGroup parent) {

        LayoutInflater inflater = context.getLayoutInflater();

        View rowView= inflater.inflate(R.layout.list_single, null, true);

        TextView txtTitle = (TextView) rowView.findViewById(R.id.txt);



        ImageView imageView = (ImageView) rowView.findViewById(R.id.img);

        txtTitle.setText(web[position]);



        imageView.setImageResource(imageId[position]);

        return rowView;

    }

}

list_single.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" >



    <ImageView

        android:id="@+id/img"

        android:layout_gravity="center"

        android:layout_width="48dp"

        android:layout_height="48dp"

        android:src="@drawable/abc" />



    <TextView

        android:id="@+id/txt"

        android:layout_gravity="center"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textSize="25dp"

        android:text="TextView" />







</LinearLayout> 

ListView with text and image