Develop Reference

Remove edittext indicator (underline) - Material Design

I need to remove underline of TextInputLayout. Its almost removed but showing little parts on start and on the end (black). It shows only when activated Screen below
style:
<style name="EditTextLoginRegister" parent="Widget.MaterialComponents.TextInputLayout.FilledBox">
<item name="boxCornerRadiusBottomEnd">8dp</item>
<item name="boxCornerRadiusBottomStart">8dp</item>
<item name="boxCornerRadiusTopEnd">8dp</item>
<item name="boxCornerRadiusTopStart">8dp</item>
<item name="boxStrokeWidth">0dp</item>
<item name="boxStrokeColor">#android:color/transparent</item>
<item name="boxBackgroundColor">#color/grey</item>
<item name="android:textColorHint">#color/greyLight2</item>
<item name="startIconTint">#color/greyLight2</item>
<item name="endIconTint">#color/greyLight2</item>
<item name="hintTextColor">#color/violet</item>
</style>
and the TextInputLayout:
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/tl_email_login"
style="#style/EditTextLoginRegister"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="24dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="24dp"
android:hint="#string/e_mail"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/tv_header_login"
app:startIconDrawable="#drawable/ic_user">
<com.google.android.material.textfield.TextInputEditText
android:id="#+id/et_email_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:textColor="#color/greyLight" />
</com.google.android.material.textfield.TextInputLayout>

Try adding boxStrokeWidthFocused to your style
<style name="EditTextLoginRegister" parent="Widget.MaterialComponents.TextInputLayout.FilledBox">
<!-- Other attributes -->
<item name="boxStrokeWidthFocused">0dp</item>
</style>
Admittedly, this is the most difficult part -> styling Material design views.
In Android Studio, it is possible to get AutoComplete options, and I usually go through the complete list and try out various items.

android special button theme with shape above

I'm trying to create a button that looks like that:
So I have created this style:
<style name="button_main" parent="#android:style/Widget.Button">
<item name="android:gravity">center_vertical|center_horizontal</item>
<item name="android:textColor">#FFFFFFFF</item>
<item name="android:shadowColor">#FF000000</item>
<item name="android:shadowDx">0</item>
<item name="android:shadowDy">-1</item>
<item name="android:shadowRadius">0.2</item>
<item name="android:textSize">16dip</item>
<item name="android:textStyle">bold</item>
<item name="android:background">#drawable/button_main</item>
<item name="android:focusable">true</item>
<item name="android:clickable">true</item>
</style>
and applied this to the button:
<Button
android:id="#+id/btnConnect"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="CONNECT"
style="#style/button_main"
android:drawableTop="#drawable/ic_connect"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text_home" />
but this is my result:
any idea how I can add the green background to the text as well? and how can I add the white tint to the icon?

how can I add the white tint to the icon?
app:drawableTint="#color/white"
Edit:
Create separate TextView inside root layout below to button
Try This:
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:background="#color/green">
<Button
android:id="#+id/btnConnect"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="#style/button_main"
android:drawableTop="#drawable/ic_wifi_24"
app:drawableTint="#color/white"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:layout_margin="#dimen/margin_12dp"
app:layout_constraintTop_toBottomOf="#+id/text_home" />
<TextView
android:id="#+id/tvConnect"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/white"
app:layout_constraintTop_toBottomOf="#id/btnConnect"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
android:text="Connect"/>
</androidx.constraintlayout.widget.ConstraintLayout>
Above code will give expected result might be you have to adjust padding n margin lil bit .

Android change color of home arrow in android.support.v7.widget.Toolbar

I am trying to change color of home arrow indicator in custom toolbar.
There is list of examples that I found but nothing worked for me.
Here is my layout
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/title_bar_toolbar_id"
app:theme="#style/ToolbarColoredBackArrow"
app:popupTheme="#style/AppTheme"
android:layout_height="?attr/actionBarSize"
android:layout_width="match_parent"
android:fitsSystemWindows="true"
android:minHeight="?attr/actionBarSize"
android:colorControlNormal="#color/hamburger_color"
android:background="#color/custom_theme_color" >
<LinearLayout
android:id="#+id/base_title_bar_toolbar_id_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:id="#+id/activity_calendar_toolbar_change_view_type"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/select_semester_view"
android:layout_gravity="center_vertical"
android:padding="10dp" />
<TextView
android:gravity="center"
android:layout_gravity="center"
android:id="#+id/base_title_bar_toolbar_header"
android:layout_weight="0.1"
style="#style/CustomToolBarTitleStyleBase"
android:text="#string/calendar" />
<ImageView
android:padding="13dp"
android:id="#+id/activity_calendar_toolbar_save_date_to_calendar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/save_date_to_calendar"
android:layout_gravity="center_vertical|start" />
<ImageView
android:id="#+id/activity_calendar_toolbar_select_semester_to_show"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/select_semester_to_show"
android:layout_gravity="center_vertical|start"
android:padding="13dp" />
</LinearLayout>
</android.support.v7.widget.Toolbar>
The styles are:
<style name="ToolbarColoredBackArrow" parent="AppTheme">
<item name="android:textColorSecondary">#color/hamburger_color</item>
<item name="android:textColorPrimary">#color/hamburger_color</item>
<item name="colorControlNormal">#color/hamburger_color</item>
</style>
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="android:actionBarStyle">#style/MyActionBar</item>
<item name="android:actionBarTabTextStyle">#style/MyActionBarTabText</item>
<!-- Support library compatibility -->
<item name="actionBarStyle">#style/MyActionBar</item>
<item name="actionBarTabTextStyle">#style/MyActionBarTabText</item>
</style>
<style name="MyActionBar" parent="#style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
<item name="android:background">#color/custom_theme_color</item>
<item name="android:titleTextStyle">#style/MyActionBar.TitleTextStyle</item>
<!-- Support library com`enter code here`patibility -->
<item name="background">#color/custom_theme_color</item>
<item name="titleTextStyle">#style/MyActionBar.TitleTextStyle</item>
</style>
I tried all possibilities that I found in examples,
but nothing worked for me.

Haha, this is one of the most frustrating styling issues in Android right now...
Try creating a style like this
<style name="AppThemeNoActionBar" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:textColorSecondary">#000000</item>
</style>
and using it in your Activity (you will probably want to merge it with your current style, as it is just the parent and this one param that matters) and of course replace the #000000 with some other color.

First of all you don't need a separate ImageView for your arrow navigation button. Just use the one from support design resources which will resize automatically according to the screen size.
Drawable upArrow = getResources().getDrawable(android.support.v7.appcompat.R.drawable.abc_ic_ab_back_mtrl_am_alpha);
upArrow.setColorFilter(Color.parseColor("#ffffff"), PorterDuff.Mode.SRC_ATOP);
toolbar.setNavigationIcon(upArrow);

TabLayout highlite and Ripple effect

I have two question with TabLayout
1)Can i remove TabLayout highlight or change highlight color of tab layout?
2)Can i add ripple effect for tab. Each tab contain TextView i try to add custom background something like this
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="?android:colorControlHighlight">
<item android:drawable="#drawable/btn_white_bg" />
</ripple>
but it doesn't work.

To remove the highlight, add the below line to your XML:
app:tabRippleColor="#android:color/transparent"

Another solution that works for me
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:minHeight="?attr/actionBarSize"
android:layout_width="match_parent"
app:tabMode="fixed"
app:tabGravity="fill"
android:clipToPadding="false"
android:elevation="0dp"
style="#style/MyCustomTabLayout"
android:background="#color/colorPrimary"
app:tabBackground="?attr/selectableItemBackground"
app:tabIndicatorColor="#color/app_yellow"
app:tabIndicatorHeight="4dip"
android:layout_height="wrap_content"/>
I just added following lines
android:background="#color/colorPrimary"
app:tabBackground="?attr/selectableItemBackground"

You can customize the TabLayout like this:
Make a xml file inside values MyCustomTabLayout.xml and then put these
<resources>
<style name="MyCustomTabLayout" parent="Widget.Design.TabLayout">
<item name="tabMaxWidth">#dimen/tab_max_width</item>
<item name="tabIndicatorColor">#color/black</item>
<!-- <item name="tabIndicatorColor">?attr/colorAccent</item> -->
<item name="tabIndicatorHeight">5dp</item>
<item name="tabPaddingStart">12dp</item>
<item name="tabPaddingEnd">12dp</item>
<item name="tabBackground">?attr/selectableItemBackground</item>
<item name="tabTextAppearance">#style/MyCustomTabTextAppearance</item>
<item name="tabSelectedTextColor">?android:textColorPrimary</item>
</style>
<style name="MyCustomTabTextAppearance" parent="TextAppearance.Design.Tab">
<item name="android:textSize">16sp</item>
<item name="android:textColor">?android:textColorSecondary</item>
<item name="textAllCaps">true</item>
</style>
and inside ur layout add this:
<android.support.design.widget.TabLayout
android:id="#+id/mainSlidingTab"
style="#style/MyCustomTabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/tool_bar"
android:background="#color/ColorPrimary" />
<!-- app:tabMode="scrollable" when many tabs -->

Alternatively, you can make the ripple transparent programmatically:
val tabs = findViewById<TabLayout>(R.id.your_tablayout)
for (n in 0 until tabs.tabCount) {
val tab = (tabs.getChildAt(0) as ViewGroup).getChildAt(n)
tab?.let {
val ripple = it.background as? RippleDrawable
ripple?.setColor(ColorStateList.valueOf(Color.parseColor("#00000000")))
}
}
This approach can also be used to set own ripple color for each tab.

scrollview is extremly slow on ics (android 4.0) when containing a long textview

Here's my problem, i'm developing a news applicaiton and i used scrollview wrapping a textview to show the content of the news.
But i found that scrolling is extremly slow on android 4.0 ics when the textview is quite long, and the longer the text, the slower the scrolling is. While on android 2.3 devices things just go as fast as expected.
I don't know whether this is really a system bug cause i found this similar problems reported on the android project
Here's my layout:
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView
android:id="#id/lst_news_details"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/list_background"
android:fadingEdge="none"
android:gravity="center" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginTop="10dp"
android:orientation="vertical" >
<TextView
android:id="#id/tv_news_details_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="#style/Detail_Title"/>
<TextView
android:id="#id/tv_news_details_category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="#style/Detail_Category"/>
<TextView
android:id="#id/tv_news_details_created_at"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
style="#style/Detail_Time"/>
<include layout="#layout/detail_horizontal_divideline" />
<ImageView
android:id="#id/img_news_details_image"
style="#style/Detail_Picture"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="6dp"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/image_contentDescription"/>
<TextView
android:id="#id/tv_news_details_context"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_gravity="center_horizontal"
style="#style/Detail_Content"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="10dip" />
</LinearLayout>
</ScrollView>
<!-- actionbar shadow -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/action_bar_shadow"
>
</LinearLayout>
</FrameLayout>
And my style.xml
<style name="Detail_Title">
<item name="android:textColor">#color/list_item_title</item>
<item name="android:textSize">18sp</item>
<item name="android:shadowColor">#color/list_item_text_shadow</item>
<item name="android:shadowDx">0</item>
<item name="android:shadowDy">2</item>
<item name="android:shadowRadius">2</item>
</style>
<style name="Detail_Category">
<item name="android:textColor">#color/list_item_category</item>
<item name="android:textSize">14sp</item>
<item name="android:shadowColor">#color/list_item_text_shadow</item>
<item name="android:shadowDx">0</item>
<item name="android:shadowDy">2</item>
<item name="android:shadowRadius">2</item>
</style>
<style name="Detail_Time">
<item name="android:textColor">#color/list_item_time</item>
<item name="android:textSize">14sp</item>
<item name="android:shadowColor">#color/list_item_text_shadow</item>
<item name="android:shadowDx">0</item>
<item name="android:shadowDy">2</item>
<item name="android:shadowRadius">2</item>
</style>
<style name="Detail_Content">
<item name="android:textColor">#color/detail_content_text</item>
<item name="android:textSize">16sp</item>
<item name="android:autoLink">all</item>
<item name="android:shadowColor">#color/list_item_text_shadow</item>
<item name="android:shadowDx">0</item>
<item name="android:shadowDy">2</item>
<item name="android:shadowRadius">2</item>
</style>
<style name="Detail_Picture">
<item name="android:layout_gravity">center</item>
<item name="android:gravity">center</item>
<item name="android:background">#drawable/image_frame</item>
</style>
By the way, i've already set
android:minSdkVersion="7"
android:targetSdkVersion="14"
But haven't set the hardware accelerated flag yet.
Is there any solution? Please help me, thanks!

Well, i've found the solution on my own
just set android:hardwareAccelerated="false" in the manifest.xml
Still quite confused about the reason, waiting for an explanation.

Note that you can add the android:hardwareAccelerated="false" for a specific activity (or even a specific view) as seen here: http://developer.android.com/guide/topics/graphics/hardware-accel.html if you want to keep the rest of your app hardware accelerated.