Develop Reference

How to change the colour of the navigation drawer item

I want to change my navigation drawer list item's background colour to be changed when i click on it.
Also it should change the text and icon colour of that item as well.
Thanks in advance..

This is quite simple and is similar to changing the background of any view that you use. You can simply create a method and write all the change code into it. Pass the view as a parameter in the method.
Whenever you click on any of the navigation drawer items, pass your view on the method.
For instance, check this method
private boolean viewSelected(View view) {
ViewHolder currentViewHolder = (ViewHolder) view.getTag();
KTextView yourtextView = currentViewHolder.yourtextView;
view.setBackgroundColor(ResourceUtil.getInstance().getColor(R.color.colorSideMenuSelectedBackground));
currentViewHolder.viewSelector.setVisibility(View.VISIBLE);
yourtextView.setTypeface(yourtextView.getContext(), ResourceUtil.getInstance().getString(R.string.yourFontName));
if (lastSelectedView == null) {
lastSelectedView = view;
return true;
}
if (lastSelectedView != view) {
ViewHolder oldViewHolder = (ViewHolder) lastSelectedView.getTag();
oldViewHolder.viewSelector.setVisibility(View.GONE);
lastSelectedView.setBackgroundColor(ResourceUtil.getInstance().getColor(android.R.color.white));
KTextView newTextView = oldViewHolder.yourtextView;
newTextView.setTypeface(yourtextView.getContext(), ResourceUtil.getInstance().getString(R.string.yourfontname));
lastSelectedView = view;
return true;
}
return false;
}
This method will simply change the background, font and color of the views.
Hope this helps!

This can be done using https://developer.android.com/guide/topics/resources/color-list-resource.
Create two drawable files :
1.drawer_background
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="checked_background_color" android:state_checked="true" />
<item android:color="default_background_color" />
</selector>
2.drawer_text_background
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="checked_text_color" android:state_checked="true" />
<item android:color="default_text_color" />
</selector>
And add these two properties to your NavigationView ie
app:itemIconTint="#drawable/drawer_background"
app:itemTextColor="#color/drawer_text_background"
one more if some color is overlapping with some other color
app:itemBackground="#android:color/transparent"
Now, All you have to do is to set an item as checked on Click listener of that item to change background and text color. You can do it programmatically.

I solved it setting this attribute to my NavigationView app:itemBackground="#drawable/drawer_selector"
and my drawer_selector is as below
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="#color/white" />
<item android:state_focused="true" android:drawable="#color/white" />
<item android:state_activated="true" android:drawable="#color/white" />
<item android:drawable="#color/orange" />

Change highlighted text color

How can I change text color of highlighted text when User selects text for copy paste.
In this image I want to change the color of text
world
from black to white. how can I do that?
I tried adding ColorStateList as drawable but it didn't help.
My TextView:
<TextView
android:id="#+id/tv_hello"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:textColorHighlight="#color/light_blue"
android:textIsSelectable="true"/>

I am not sure it is possible without doing it yourself :
public class MyTextView extends TextView {
... Constructors, ...
private ForegroundColorSpan mSpan = new ForegroundColorSpan(0xffff0000);
#Override
public void setText(CharSequence text, BufferType type) {
// make sure the text is spannable
if (type == BufferType.NORMAL) {
type = BufferType.SPANNABLE;
}
super.setText(text, type);
}
#Override
protected void onSelectionChanged(int selStart, int selEnd) {
super.onSelectionChanged(selStart, selEnd);
Spannable txt = (Spannable) getText();
// ok even if not currently attached
txt.removeSpan(mSpan);
if (selStart != selEnd) {
txt.setSpan(mSpan, selStart, selEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}

Inside your res/color folder create a file called text_color_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:color="#d48383"/>
<item android:state_pressed="false" android:color="#121212"/>
<item android:state_selected="true" android:color="#d48383"/>
<item android:state_focused="true" android:color="#d48383"/>
</selector>
Then inside your TextView set this as:
android:textColor="#color/text_color_selector"

Create color folder in your res directory. Then add this xml file. Let's text_color_change.xml
res/color/text_color_change.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true" android:color="#444"/>
<item android:state_focused="true" android:color="#444"/>
<item android:state_pressed="true" android:color="#444"/>
<item android:color="#ccc"/>
</selector>
Then in the TextView, add the textColor as the above file.
<TextView
....
android:textColor="#color/text_color_change" />

Add this property selector property, the selected item will keep it's color state until something else is selected.
in your
selector.xml add this
<!-- Activated -->
<item
android:state_activated="true"
android:color="#ff0000" />
<!-- Active -->
<item
android:state_active="true"
android:color="#ff0000" />
check this for more detail.

Changing the background color of a Tab in TabLayout (Android design support library) doesn't occupy the entire tab space

I have a TabLayout (design support library) which is tied up to a ViewPager containing three tabs. I have designed a custom layout and set that to each tab in the TabLayout. I have been trying to change the background color of the currently selected tab. The color only wraps up around the text in the tab but doesn't occupy the entire tab space.
Below are the code snippets of my activity and the custom layout file.
Activity code
public class CustomTabLayoutActivity extends AppCompatActivity {
private TabLayout tabLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_custom_tab_layout);
tabLayout = (TabLayout) findViewById(R.id.tabLayout);
ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);
setupViewPager(viewPager);
tabLayout.setupWithViewPager(viewPager);
tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
setupTabLayout();
viewPager.setCurrentItem(0);
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
for (int i = 0; i < tabLayout.getTabCount(); i++) {
if (i == position) {
tabLayout.getTabAt(i).getCustomView().setBackgroundColor(Color.parseColor("#198C19"));
} else {
tabLayout.getTabAt(i).getCustomView().setBackgroundColor(Color.parseColor("#f4f4f4"));
}
}
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
}
private void setupViewPager(ViewPager viewPager) {
CustomViewPagerAdapter pagerAdapter = new CustomViewPagerAdapter(getSupportFragmentManager());
pagerAdapter.addFragments(new OneFragment(), "ONE");
pagerAdapter.addFragments(new OneFragment(), "TWO");
pagerAdapter.addFragments(new OneFragment(), "THREE");
viewPager.setAdapter(pagerAdapter);
}
private void setupTabLayout() {
TextView customTab1 = (TextView) LayoutInflater.from(CustomTabLayoutActivity.this)
.inflate(R.layout.custom_tab_layout, null);
TextView customTab2 = (TextView) LayoutInflater.from(CustomTabLayoutActivity.this)
.inflate(R.layout.custom_tab_layout, null);
TextView customTab3 = (TextView) LayoutInflater.from(CustomTabLayoutActivity.this)
.inflate(R.layout.custom_tab_layout, null);
customTab1.setText("ONE");
tabLayout.getTabAt(0).setCustomView(customTab1);
customTab2.setText("TWO");
tabLayout.getTabAt(1).setCustomView(customTab2);
customTab3.setText("THREE");
tabLayout.getTabAt(2).setCustomView(customTab3);
}
}
Custom Layout file for each tab
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/tab"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:background="#ffffff"
android:text="Test"
android:textColor="#android:color/black"
android:textSize="20sp" />
Here is the screenshot of the tabs after running the above code.
As you guys can see, the color only occupies the text in the tab but not the entire tab space. How to achieve this? Any ideas/suggestions would help me a lot. Thanks in advance.

Define a selector as a drawable, and also have a drawable for the selected/unselected states.
For this solution, I started with the code from this answer, and then added the functionality that changes the background color for the current Tab.
First, the selector, tab_background.xml in the drawable folder:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/tab_background_selected" android:state_selected="true" />
<item android:drawable="#drawable/tab_background_unselected" android:state_selected="false" android:state_focused="false" android:state_pressed="false" />
</selector>
Then, tab_background_selected.xml in the drawable folder:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<solid android:color="#d13fdd1a" />
</shape>
Then, tab_background_unselected.xml in the drawable folder:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<solid android:color="#3F51B5" />
</shape>
Finally, in your styles.xml, specify the selector to use, and also specify the tab indicator style, since the app:tabIndicatorColor property in the TabLayout will now be ignored:
<style name="Base.Widget.Design.TabLayout" parent="android:Widget">
<item name="tabBackground">#drawable/tab_background</item>
<item name="tabIndicatorColor">#ff00ff</item>
<item name="tabIndicatorHeight">2dp</item>
</style>
Result with the example colors above:
Additional Note:
Tested with the 23.3.0 versions of the support library components:
dependencies {
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.android.support:cardview-v7:23.3.0'
compile 'com.android.support:recyclerview-v7:23.3.0'
compile 'com.android.support:design:23.3.0'
compile 'com.android.support:support-v4:23.3.0'
}

you should use:
app:tabBackground="#drawable/tab_selector"
android:background="#color/colorNormal"
tab_selector.xml (in Drawable Folder):
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true" android:drawable="#color/colorSelected"/>
<item android:state_selected="false" android:drawable="#color/colorNormal"/>
</selector>

Tabs with Ripple effect:
In addition to Daniel Nugent's answer It would be beautiful to add a ripple effect to tabs. In order to achieve this, you must add these two drawables to drawable-v21 folder:
tab_background_selected.xml :
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#63D25B"> <!-- ripple color -->
<item android:drawable="#d13fdd1a" /> <!-- normal color -->
</ripple>
tab_background_unselected.xml :
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="#606FC7"> <!-- ripple color -->
<item android:drawable="#3F51B5" /> <!-- normal color -->
</ripple>

I know that its quite late to answer this question, but have a different & simple answer without creating any new background or selector.
Tab-Layout have default padding of 12dp at its start & end. Just set
app:tabPaddingStart="0dp"
app:tabPaddingEnd="0dp"
to fill color in your tab.

Dynamically change custom Views of TabLayout

I have a TabLayout with a ViewPager in my Android app. It is set up with an icon with some text below for each tab. What I want to do now is to change the color of the selected tab so that it stands out a bit more. The icons are gray, but I want the selected tab to be green. For this I have a separate Drawable (png file) for each color.
It kinda works, but it adds a new View to the tab at every select/unselect instead of changing it. Here is the code in question (this is a custom Fragment class):
private ViewPager mViewPager;
private MyPagerAdapter mAdapter;
private TabLayout mTabLayout;
private int mCurrentItem = 0;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.my_fragment, container, false);
mViewPager = (ViewPager) view.findViewById(R.id.my_pager);
mTabLayout = (TabLayout) view.findViewById(R.id.my_tablayout);
return view;
}
#Override
public void onResume()
{
super.onResume();
final MyActivity myActivity = (MyActivity) getActivity();
mCurrentItem = 0;
mAdapter = new MyPagerAdapter(getChildFragmentManager(), myActivity);
mViewPager.setAdapter(mAdapter);
mViewPager.setCurrentItem(mCurrentItem);
mTabLayout.setupWithViewPager(mViewPager);
mTabLayout.removeAllTabs();
mTabLayout.addTab(mTabLayout.newTab()
.setTag(0)
.setCustomView(R.layout.my_tablayout_tab_recipes_selected));
mTabLayout.addTab(mTabLayout.newTab()
.setTag(1)
.setCustomView(R.layout.my_tablayout_tab_shopping_list));
mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(mTabLayout));
mTabLayout.setOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager){
#Override
public void onTabSelected(TabLayout.Tab tab)
{
super.onTabSelected(tab);
if (tab.getTag() == null)
{
return;
}
switch ((TabConstants.TAGS) tab.getTag())
{
case 0:
tab.setCustomView(R.layout.my_tablayout_tab_recipes_selected);
break;
case 1:
tab.setCustomView(R.layout.my_tablayout_tab_shopping_list_selected);
}
mViewPager.setCurrentItem(tab.getPosition());
myActivity.supportInvalidateOptionsMenu(); // Invalidate Toolbar
}
#Override
public void onTabUnselected(TabLayout.Tab tab)
{
super.onTabUnselected(tab);
if (tab == null || tab.getTag() == null)
{
return;
}
switch ((TabConstants.TAGS) tab.getTag())
{
case 0:
tab.setCustomView(R.layout.my_tablayout_tab_recipes);
break;
case 1:
tab.setCustomView(R.layout.my_tablayout_shopping_list);
break;
}
}
});
}
Here are a few images of what's happening. The right View is inflated every time, but it is added instead of replacing the previous View.
Initially:
First tab change:
Second tab change:
Update (solution):
Here is an example of the StateListDrawable I ended up using for the tabs.
Drawables:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Active tab -->
<item android:state_selected="true"
android:state_focused="false"
android:state_pressed="false"
android:drawable="#drawable/selected" />
<!-- Inactive tab -->
<item android:state_selected="false"
android:state_focused="false"
android:state_pressed="false"
android:drawable="#drawable/unselected" />
<!-- Pressed tab -->
<item android:state_pressed="true"
android:drawable="#drawable/selected" />
</selector>
Text colors:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Active tab -->
<item android:state_selected="true"
android:state_focused="false"
android:state_pressed="false"
android:color="#color/my_selected_color" />
<!-- Inactive tab -->
<item android:state_selected="false"
android:state_focused="false"
android:state_pressed="false"
android:color="#color/my_unselected_color" />
<!-- Pressed tab -->
<item android:state_pressed="true"
android:color="#color/my_selected_color" />
</selector>

You should use a StateListDrawable for your images within each tab.
For example, let's say in your my_tablayout_tab_recipes there is your knife and spoon image.
You should assign an xml file as a background for that image, in which you could decide the selected and unselected version of your image.
Reference
There's no need to change by yourself the background images for selected and unselected state; the android system will take care of that for you.

Android how to Change Default background color in Button click?

I need to show different color on button after click because user need to know button is
Click.
I don't understand how to do this?
Give me suggestion. button click shoud be programatically, No Need to create XML for this
//XML file saved at res/drawable/button_bg.xml:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:color="#ffff0000"/> <!-- pressed -->
<item android:state_focused="true"
android:color="#ff0000ff"/> <!-- focused -->
<item android:color="#ff000000"/> <!-- default -->
</selector>
in JAVA
am create like this
Button Settings_Button = new Button(this) ;
Settings_Button.setClickable(true);
//Settings_Button.setBackgroundResource(R.drawable.selector);
Settings_Button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
// Intent newIntent = new Intent(activity.getBaseContext(), ProfileSettingActivity.class);
// activity.startActivity(newIntent);
}
});
BUt this is not working
EDIT : How to change Background color when click button in programatically.

try this way,hope this will help you...
button_selector
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#color/button_pressed" android:state_pressed="true"></item>
<item android:drawable="#color/button_pressed" android:state_focused="true"></item>
<item android:drawable="#color/button_default" android:state_enabled="true" android:state_focused="false" android:state_pressed="false"></item>
<item android:drawable="#color/button_pressed" android:state_enabled="false"></item>
</selector>
color
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="button_pressed">#ffff0000</color>
<color name="button_default">#ff0000ff</color>
</resources>
ACTIVITY code
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = new Button(this);
btn.setBackgroundResource(R.drawable.button_selector);
btn.setText("Custom Button");
addContentView(btn,new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
}

Create selector drawable according all state.
Below is sample example.
btn_green_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_focused="false"
android:state_selected="false"
android:state_pressed="false"
android:drawable="#drawable/btn_green_unselected" />
<item
android:state_focused="true"
android:state_selected="false"
android:state_pressed="false"
android:drawable="#drawable/btn_green_selected" />
<!-- Focused states -->
<item
android:state_focused="true"
android:state_selected="true"
android:state_pressed="false"
android:drawable="#drawable/btn_green_selected" />
<!-- Pressed state -->
<item
android:state_pressed="true"
android:drawable="#drawable/btn_green_selected" />
</selector>
btn_green_selected.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#00B2B2"/>
</shape>
btn_green_unselected.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#8ED3CD"/>
</shape>
now applied btn_green_selector.xml in coding.
Settings_Button.setBackgroundResource(R.drawable.btn_green_selector);
you can also use Images instead of Shape.

Try Like this,
main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/myLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="64dp"
android:layout_marginTop="71dp"
android:text="changeColor" />
</LinearLayout>
ChangeBackgroundActivity.java
public class ChangeBackgroundActivity extends Activity {
/** Called when the activity is first created. */
Button blueButton;
LinearLayout myLO;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myLO=(LinearLayout)findViewById(R.id.myLayout);
blueButton=(Button)findViewById(R.id.button1);
blueButton.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
myLO.setBackgroundColor(Color.BLUE);
}
});
}
}

You can use this line in buttons onclicklistener,button.setBackgroundColor(Color.WHITE);