Develop Reference

how to make specific button side curved

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#color/white" />
<corners
android:bottomLeftRadius="30dp"
android:topLeftRadius="30dp" />
</shape>
<Button
android:id="#+id/btn_list"
android:layout_width="#dimen/width_100dp"
android:layout_height="wrap_content"
android:background="#drawable/my_background"/>
Tried the above code but it does not work for me. do i need to make a custom class extending button class.

Very Easy!, Take CardView as root element. CardView rounds child elements edges according to itself.
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_margin="20dp"
app:cardCornerRadius="25dp"
app:cardElevation="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:text="#string/app_name" />
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#ecb8ff"
android:gravity="center"
android:text="#string/app_name" />
</LinearLayout>
</androidx.cardview.widget.CardView>
Output:
Also if you need TabLayout. You can see this answer

Try this it's a little tricky but it works
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#FFF" />
<corners
android:bottomLeftRadius="0dp"
android:bottomRightRadius="500dp"
android:topLeftRadius="0dp"
android:topRightRadius="500dp" />
</shape>
</item>
</layer-list>

Android custom shape for zoom buttons

I'm a bit new with Android UI but I would like to know what is the best way to archive something like this? The only icon I have is 'plus' and 'minus'.
Is there a way with a custom drawable shape to build this 'half circle' shape? (So it would be two shape so that 'plus' and 'minus' are two different actions

Yes, you can create a shape like this:
<!--roundbox-->
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#999999" />
<stroke android:color="#000000" />
<corners android:radius="#dimen/round_button_size" />
</shape>
and in the layout:
<LinearLayout
android:layout_width="#dimen/round_button_size"
android:layout_height="100dp"
android:orientation="vertical"
android:weightSum="2"
android:background="#drawable/roundbox">
<Button
android:id="#+id/plus_button"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:src="#drawable/plus" />
<View
android:layout_width="match_parent"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_height="1dp" android:background="#000" />
<Button
android:id="#+id/minus_button"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:src="#drawable/minus" />
</LinearLayout>
also added this in the dimens.xml file:
<dimen name="round_button_size">50dp</dimen>
If you really want two separate shapes:
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#999999" />
<stroke android:color="#000000" />
<corners android:topLeftRadius="#dimen/round_button_size" android:topRightRadius="#dimen/round_button_size"/>
</shape>
and:
<Button
android:src="#drawable/plus"
android:layout_width="#dimen/round_button_size"
android:layout_height="55dp"
android:background="#drawable/round_button"/>

How to add the slider (left and right) effect using seekbar?

I have a dialog and in this i have 2 button "Yes" and "No". If i slide right then it will treat as pressed "No" and if i slide left it will treated as pressed "Yes" same as like some phone calling screes do for accept and reject calls. I tired this link. Initially my slider is positioned at mid position (android:progress ="50"), and if current progress returns 5 i am considering it pressed "yes" and if it returns 90 i consider pressed "No" and when i try to slide left or right it should produce a sliding effect for better UI as thumb moves. I tired this way but its not a good effect when right/left movement of thumb..
Means i want exactly same as slide to unlock button like this but want to keep the slider in middle so that i can move both side for Yes and No.
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:id="#android:id/background">
<shape>
<gradient
android:angle="0"
android:startColor="#ff2c10"
android:endColor="#ff2c10" />
<corners android:radius="35dip" />
<size android:height="55dp"
android:width="250dp"/>
</shape>
</item>
<item android:id="#android:id/progress">
<clip >
<shape>
<gradient
android:angle="0"
android:centerY="0.5"
android:startColor="#295d0b"
android:endColor="#295d0b" />
<corners android:radius="35dip" />
<size android:height="55dp"
android:width="250dp"/>
</shape>
</clip>
</item>
</layer-list>
And my seekbar.xml looks like....
<SeekBar
android:id="#+id/sb"
android:layout_marginTop="10dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:progress="50"
android:progressDrawable="#drawable/seek_bar"
android:thumb="#drawable/slide_thumb"
android:splitTrack="false"
android:background="#null"
android:thumbOffset="2dp"
android:paddingLeft="2dp"
android:paddingRight="2dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Yes"
android:textSize="25sp"
android:textColor="#android:color/white"
android:layout_marginTop="22dp"
android:layout_marginLeft="10dp"
android:textStyle="bold"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="No"
android:textSize="25sp"
android:textColor="#android:color/white"
android:layout_alignParentRight="true"
android:layout_marginTop="22dp"
android:layout_marginRight="10dp"
android:textStyle="bold"
/>
but its not giving me the right effect as i wanted, i want same as these below pictures are.. But with "yes" and "No" text.

Layout
<RelativeLayout 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"
tools:context=".MainActivity">
<SeekBar
android:id="#+id/seekBar"
android:layout_width="match_parent"
android:layout_height="32dp"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_gravity="center"
android:layout_marginTop="121dp"
android:max="100"
android:paddingLeft="30dp"
android:paddingRight="30dp"
android:progress="50"
android:progressDrawable="#drawable/seekbar_progressbar"
android:thumbTintMode="multiply" />
<TextView
android:layout_width="wrap_content"
android:layout_height="24dp"
android:background="#drawable/circle_background_no"
android:textColor="#dedede"
android:text="No"
android:padding="5dp"
android:layout_marginLeft="17dp"
android:layout_marginStart="17dp"
android:layout_alignTop="#+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="24dp"
android:textColor="#dedede"
android:background="#drawable/circle_background_yes"
android:padding="5dp"
android:paddingRight="7dp"
android:paddingLeft="7dp"
android:gravity="center"
android:text="Yes"
android:id="#+id/textView"
android:layout_marginRight="13dp"
android:layout_marginEnd="13dp"
android:layout_alignTop="#+id/seekBar"
android:layout_alignRight="#+id/seekBar"
android:layout_alignEnd="#+id/seekBar"
android:layout_marginTop="4dp" />
In drawable
circle_background_yes.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<corners android:radius="10dip"/>
<stroke android:color="#14ba92" android:width="0dip"/>
<solid android:color="#14ba92"/>
</shape>
circle_background_no.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<corners android:radius="10dip"/>
<stroke android:color="#990800" android:width="0dip"/>
<solid android:color="#990800"/>
</shape>
seekbar_progressbar.xml
<?xml version="1.0" encoding="utf-8"?>
<item>
<shape android:shape="rectangle" >
<corners android:radius="5dp"/>
<gradient
android:angle="180"
android:endColor="#14ba92"
android:startColor="#14ba92" />
</shape>
</item>
<item>
<clip>
<shape android:shape="rectangle" >
<corners android:radius="5dp" />
<gradient
android:angle="180"
android:endColor="#990800"
android:startColor="#d14900" />
</shape>
</clip>
</item>
<item>
<clip>
<shape android:shape="rectangle" >
<corners android:radius="5dp" />
<gradient
android:angle="180"
android:endColor="#990800"
android:startColor="#d14900" />
</shape>
</clip>
</item>
If you don't like the default thumb, you will have to create your own Drawable, which you can then set the thumb in code with something like:
Drawable thumb = getResources().getDrawable( R.drawable.myThumb );
SeekBar mSeekBar = (SeekBar) findViewById(R.id.mySeekBar);
mSeekbar.setThumb(thumb);
Or you can set the thumb in XML with:
<SeekBar
...
android:thumb="#drawable/seek_thumb" />
The actual Drawable can be an image, shape, or any other kind of Drawable you could possibly desire. If you want the thumb to change appearance when it is pressed, you will want to create a State List Drawable.

change background with animation when user clicks on it

I used one LinearLayout in my activity for changing two views. Here, i used two textviews. When user clicks on linear layout i change views as per my requirnments. xml file is here,
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="#drawable/customswitchselector"
android:textStyle="bold"
android:layout_below="#+id/linearTab"
android:layout_marginTop="20dp"
android:layout_marginBottom="20dp"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:showText="true"
android:id="#+id/switch1"
android:checked="false"
android:weightSum="2">
<TextView
android:id="#+id/tv_switch1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:textStyle="bold"
android:textColor="#272351"
style="bold" />
<TextView
android:id="#+id/tv_switch_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_weight="1"
android:textStyle="bold"
android:layout_gravity="center_vertical"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:textColor="#ffffff"
style="bold"
/>
</LinearLayout>
These two images show my two conditions. I have done enough to change this. Now i want to do animation while i am changing background for textviews on layout clicks. I have checked transitiondrawable example but it not helpful to me.
customswitchselector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true">
<shape android:dither="true" android:shape="rectangle" android:useLevel="false" android:visible="true">
<gradient android:angle="270" android:endColor="#ffffff" android:startColor="#ffffff" />
<corners android:radius="30dp" />
</shape>
</item>
<item android:state_checked="false">
<shape android:dither="true" android:shape="rectangle" android:useLevel="false" android:visible="true">
<gradient android:angle="270" android:endColor="#ffffff" android:startColor="#ffffff" />
<corners android:radius="30dp" />
</shape>
</item>
</selector>
custom_track.xml This is used for textview with blue background
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:dither="true"
android:shape="rectangle"
android:useLevel="false"
android:visible="true">
<gradient
android:angle="270"
android:endColor="#292850"
android:startColor="#292850" />
<corners android:radius="30dp" />
<size
android:width="100dp"
android:height="30dp" />
</shape>

A possibility would be to set the white drawable as background of a FrameLayout and add a View for the blue oval and two TextViews for the titles to it.
To still acchieve that the views takes exactly the half of the container you could use PercenFrameLayout (read more about it in the official docu). To use it you need to add this dependency to your build.gradle: compile 'com.android.support:percent:25.2.0'
After creating the layout you just animate the gravity of the blue oval from left to right or the other way round.
So your layout would look like this:
<PercentFrameLayout
android:id="#+id/container"
android:animateLayoutChanges="true"
android:background="#drawable/white_oval"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- blue oval -->
<View
android:id="#+id/blue_oval"
android:gravity="start"
android:background="#drawable/blue_oval"
app:layout_widthPercent="50%"
android:layout_height="wrap_content"
android:transformPivotX="0dp" />
<!--2 textviews-->
<TextView
app:layout_widthPercent="50%"
android:layout_height="wrap_content"
android:text="left"
android:gravity="start"/>
<TextView
app:layout_widthPercent="50%"
android:layout_height="wrap_content"
android:text="right"
android:gravity="end"/>
</FrameLayout>
Then in your code animate the gravity change of the blue oval like this:
private void animateGravity(int toGravity) {
LayoutTransition layoutTransition = container.getLayoutTransition();
layoutTransition.enableTransitionType(LayoutTransition.CHANGING);
layoutTransition.setDuration(YOUR_ANIMATION_DURATION);
layoutTransition.setInterpolator(LayoutTransition.CHANGING, new AccelerateDecelerateInterpolator());
FrameLayout.LayoutParams layoutParams = (LayoutParams) blueOvalView.getLayoutParams();
layoutParams.gravity = toGravity;
blueOvalView.setLayoutParams(layoutParams);
}

Circle changes to oval

I have a drawable that I would like to use as a background for a textView. The drawable is declared in the xml as a textView background. I am having a problem when testing the drawable on different screen sizes, as sometimes it stretches out and turns into an oval shape instead of staying as a circle.
So, specifically, my question is as follows: Is there any way to make sure that a drawable is always a circle and does not stretch into an oval? Preferably I would like everything to be done in XML.
I can post some of my code, but I think it is unnecessary because it is a simple drawable that uses the oval shape, and then in the layout I set the drawable to the background of a textView. My attempt to make the drawable to a circle was to use weights and a linear layout, and for the most part it works but it still stretches a bit in some screen sizes.
For completeness, if anyone is interested here is the layout code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="6"
android:text="Button" />
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="4"
android:gravity="center_horizontal|bottom"
android:text="Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ImageView
android:id="#+id/gradientline1"
android:layout_width="match_parent"
android:layout_height="2dp"
android:src="#drawable/gradient_line" />
<TextView
android:id="#+id/textView2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="8"
android:gravity="center"
android:text="Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/textView3"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="4"
android:gravity="center_horizontal|bottom"
android:text="Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ImageView
android:id="#+id/gradientline2"
android:layout_width="match_parent"
android:layout_height="2dp"
android:src="#drawable/gradient_line" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="24"
android:orientation="horizontal" >
<View
android:layout_width="1dp"
android:layout_height="0dp"
android:layout_weight="5" >
</View>
<TextView
android:id="#+id/textView4"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="20"
android:background="#drawable/circle"
android:gravity="center"
android:text="Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<View
android:layout_width="1dp"
android:layout_height="0dp"
android:layout_weight="5" >
</View>
</LinearLayout>
and here is the circle drawable (just layers of circles):
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="oval" >
<solid android:color="#color/circle_one" />
</shape>
</item>
<item
android:bottom="3dp"
android:left="3dp"
android:right="3dp"
android:top="3dp">
<shape android:shape="oval" >
<solid android:color="#color/circle_two" />
</shape>
</item>
<item
android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp">
<shape android:shape="oval" >
<solid android:color="#color/circle_three" />
</shape>
</item>
<item
android:bottom="12dp"
android:left="12dp"
android:right="12dp"
android:top="12dp">
<shape android:shape="oval" >
<solid android:color="#color/circle_two" />
</shape>
</item>
<item
android:bottom="16dp"
android:left="16dp"
android:right="16dp"
android:top="16dp">
<shape android:shape="oval" >
<solid android:color="#color/circle_three" />
</shape>
</item>
<item
android:bottom="28dp"
android:left="28dp"
android:right="28dp"
android:top="28dp">
<shape android:shape="oval" >
<solid android:color="#color/circle_one" />
</shape>
</item>

Use shape="ring" (not oval)
try:
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:innerRadius="0dp"
android:shape="ring"
android:thicknessRatio="2"
android:useLevel="false" >
<!-- View background color -->
<solid
android:color="#color/white" >
</solid>
<!-- View border color and width -->
<stroke
android:width="1.6dp"
android:color="#color/beam_grey" >
</stroke>
</shape>

put in your xml file the layout width and height in wrap content.
android:layout_width="wrap_content"
android:layout_height="wrap_content"