Develop Reference

How to set drawable in Top-Left in a textview?

<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawablePadding="#dimen/padding_small_6"
android:includeFontPadding="false"
android:text="#string/forgot_password_hint"
android:drawableStart="#drawable/ic_edit"
android:textSize="#dimen/text_size_medium_14"/>
This is my textview. I want to set the drawable on left of this textview. But the problem is, If the text is multiline, then drawable appears center-vertical in the text view.
Is there any option to set drawable on Top-Left of the textview?

No, their is no any direct option to set drawable on Top-Left of the textview.
But you can create some custom design to achieve this. Replace your TextView with the below code
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:src="#drawable/ic_edit" />
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:includeFontPadding="false"
android:text="#string/forgot_password_hint"
android:textSize="#dimen/text_size_medium_14"/>
</LinearLayout>

Similar to #Avinash Kumar Singh solution. If you have a small image it will be higher than a first line of text.
In this case you should center the image by the first line.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tool="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingTop="8dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:drawableStartCompat="#drawable/dot"
tool:drawableStart="#drawable/dot" />
<TextView
android:id="#+id/title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_weight="1"
tool:text="This is my textview. I want to set the drawable on left of this textview" />
</LinearLayout>

Make Custom drawable class by extending a drawable class and use for drawable .eg:
public class TopLeftGravityDrawable extends BitmapDrawable {
private final Drawable mDrawable;
public TopLeftGravityDrawable(Drawable drawable) {
mDrawable = drawable;
}
#Override
public int getIntrinsicWidth() {
return mDrawable.getIntrinsicWidth();
}
#Override
public int getIntrinsicHeight() {
return mDrawable.getIntrinsicHeight();
}
#Override
public void draw(Canvas canvas) {
int halfCanvas= canvas.getHeight() / 2;
int halfDrawable = mDrawable.getIntrinsicHeight() / 2;
// align to top
canvas.save();
canvas.translate(0, -halfCanvas + halfDrawable);
mDrawable.draw(canvas);
canvas.restore();
}
}
Usage :
Drawable drawable = getResources().getDrawable(R.drawable.ic_customer);
TopGravityDrawable gravityDrawable = new TopGravityDrawable(drawable);
drawable.setBounds(0, 6, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
gravityDrawable.setBounds(0, 6, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
textview.setCompoundDrawables(gravityDrawable, null, null, null);

If a programmatic approach is suitable, You could extend Drawable in such way that it occupies the full height available and draws on top.
If You want an solution using only interface builder, You should just wrap the TextView in a horizontal LinearLayout, add an ImageView and set ImageViews gravity to be TOP.

This has solved my issue:
class MyTextView #JvmOverloads constructor(context: Context, attrs: AttributeSet? = null
) : AppCompatTextView(context, style) {
private val leftDrawable = ContextCompat.getDrawable(context, R.drawable.checkmark)
override fun onDraw(canvas: Canvas?) {
super.onDraw(canvas)
setBulletPoint(compoundDrawables[0], canvas)
}
private fun setBulletPoint(drawableLeft: Drawable?, canvas: Canvas?) {
if (!TextUtils.isEmpty(text)) {
leftDrawable?.let { drlft ->
if (lineCount == 1) {
setCompoundDrawablesWithIntrinsicBounds(drlft, null, null, null)
} else {
val buttonWidth = drlft.intrinsicWidth
val buttonHeight = drlft.intrinsicHeight
val topSpace = abs(buttonHeight - lineHeight) / 2
drlft.setBounds(0, topSpace, buttonWidth, topSpace + buttonHeight)
canvas?.apply {
save()
drlft.draw(canvas)
restore()
}
}
}
}
}
}

Try this in xml file
change android:drawableStart to android:drawableLeft
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawablePadding="#dimen/padding_small_6"
android:includeFontPadding="false"
android:text="#string/forgot_password_hint"
android:drawableLeft="#drawable/ic_edit"
android:textSize="#dimen/text_size_medium_14"/>

use android:paddingBottom="10dp"

How to create exactly square buttons that fill in width of screen

I've an activity that fill with some buttons dynamically base on TableLayout and TableRow like this:
private TableLayout buttonTableLayout;
//-----
for (int row = 0; row < buttonTableLayout.getChildCount(); ++row)
((TableRow) buttonTableLayout.getChildAt(row)).removeAllViews();
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
for (int row = 0; row < 5; row++) {
TableRow currentTableRow = getTableRow(row);
for (int column = 0; column < 5; column++) {
Button newGuessButton = (Button) inflater.inflate(R.layout.my_button, currentTableRow, false);
newGuessButton.setText(String.valueOf((row * 5) + column + 1));
currentTableRow.addView(newGuessButton);
}
}
}
//----
private TableRow getTableRow(int row) {
return (TableRow) buttonTableLayout.getChildAt(row);
}
I want to make a 5*5 list of buttons that 1:All of them has the same width and height and 2: make them fill of screen.
In my code I have a layout that named my_button, like :
<Button xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/newButton"
android:layout_width="60dp"
android:layout_height="60dp"
android:background="#drawable/button_style"></Button>
or
<Button xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/newButton"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#drawable/button_style"></Button>
and results is:
I have change the gravity but it doesn't works.Is there any way to make them exactly square and fill the width of screen.

Updated 2022:
Now we can do it easily with ConstraintLayout and app:layout_constraintDimensionRatio="1:1". This is the google guide link.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:text="My Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Previous answer:
You should sub-class Button view and override below function:
public class SquareButton extends Button {
public SquareButton(Context context) {
super(context);
}
public SquareButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
public SquareButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public SquareButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
}
#Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, widthMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
int size = width > height ? height : width;
setMeasuredDimension(size, size); // make it square
}
}
Edit: Ok, you need to customize your button as above. Then, instead of using the default button, you can use the above SquareButton.
<com.kingfisher.utils.SquareButton
android:id="#+id/btnSearch"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="100"
android:text="Downloaded"/>

you have to dynamically get the width of screen like this:
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
And after getting this you have to divide the width by 5 so that you will be having width of one button on the basis of width of screen.
int buttonWidthAndHeight = width/ 5;
Now when you are adding button to your table layout set the width and height of button as well like this:
TableLayout.LayoutParams lp= new TableLayout.LayaoutParams(buttonWidthAndHeight ,buttonWidthAndHeight ); // width,height
newGuessButton.setLayoutParams(lp);
Happy Coding!!!!!

Please Try this code, place the button_rect_shape.xml on drawable folder.
button_rect_shape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
/>
<solid android:color="#fc5117"/>
<!--<stroke
android:width="1dp"
android:color="#ffffff" />
-->
<!--<gradient android:angle="270"
android:centerColor="#fc5117"
android:endColor="#fc5117"
android:startColor="#fc5117" />-->
</shape>
SampleLayout.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="vertical">
<LinearLayout
android:layout_width="200dp"
android:layout_height="100dp"
android:layout_gravity="center_horizontal"
android:background="#drawable/button_rect_shape"
/>
</LinearLayout>

Android textview's view bounds are much larger than content, how to remove it?

My problem is, when i turn on a setting in the developer options to see view bounds, i can see that the orange "20" text wraps much larger space than it is requried. (top and bottom)
I tried to set: android:includeFontPadding="false" but it is just simple push up the content, leaving a big empty space bottom of the text's container.
How can i remove the extra space?
XML:
<LinearLayout
android:id="#+id/topDash"
android:layout_width="180dp"
android:layout_height="180dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:background="#drawable/circle_gray"
android:orientation="vertical" >
<TextView
android:id="#+id/RobotoTextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/sog_C"
android:textColor="#color/blue_medium"
android:textSize="20sp" />
<TextView
android:id="#+id/RobotoTextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="20"
android:textColor="#color/orange"
android:textSize="100sp" />
<TextView
android:id="#+id/robotoTextView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="KM/H"
android:textColor="#color/gray_darker"
android:textSize="24sp" />
</LinearLayout>

Very nice question. I'm not sure that it possible to do it only in XML and without setting any hard coded value for scrollY property, but I implemented a small custom class without hard coded values, which you can use without any modifications in other places. In such situations onMeasure method always come to help :) I use default font here. If you use different typeface, call textPaint.setTypeface() and set it before textPaint.getTextBounds statement.
public class CustomTextView extends TextView {
private int newWidth;
private int newHeight;
public CustomTextView(Context context) {
super(context);
}
public CustomTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomTextView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if(newHeight == 0) {
Rect textBounds = new Rect();
Paint textPaint = new Paint();
textPaint.setTextSize(getTextSize());
textPaint.getTextBounds(getText().toString(), 0, getText().length(), textBounds);
int descent = (int) textPaint.descent();
newWidth = textBounds.width();
newHeight = textBounds.height() - 2 * descent;
setScrollY(descent);
}
setMeasuredDimension(newWidth, newHeight);
}
}
But this solution is only good for numbers, why only for numbers, because of descent, and that's why we cant remove that extra space ony inside the XML, it is a font property

Circular Layout

I want to develop following screen in Android.
I used CircleLayout but I am still not able to achieve desired output. See following code and screenshot.
<com.example.hl.CircleLayout
android:id="#+id/pie"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
custom:dividerWidth="5dp"
custom:innerCircle="#drawable/profile_pic_icon"
custom:innerRadius="50dp"
custom:layoutMode="pie"
custom:sliceDivider="#android:color/transparent" >
<RelativeLayout
android:id="#+id/appt_center_container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/appt_center_bg" >
<TextView
android:id="#+id/one"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:onClick="onClick"
android:text="APP CENTER"
android:textStyle="bold" />
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/meds_cabinet_bg" >
<TextView
android:id="#+id/two"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:onClick="onClick"
android:text="MEDS CABINET"
android:textStyle="bold" />
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/check_in_bg" >
<TextView
android:id="#+id/three"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:onClick="onClick"
android:text="CHECK-IN"
android:textStyle="bold" />
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/my_tracker_bg" >
<TextView
android:id="#+id/four"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:onClick="onClick"
android:text="MY TRACKERS"
android:textStyle="bold" />
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/myaccount_bg" >
<TextView
android:id="#+id/five"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:onClick="onClick"
android:text="MY ACCOUNTS"
android:textStyle="bold" />
</RelativeLayout>
</com.example.hl.CircleLayout>
screenshot
Question:-
Is there any other library that can help developing the desired screen?
How to develop such screen using custom view? I mean what are steps to develop such custom view easily?

I have implemented a library for circular layout. Currently under development, basically meets need I think. Feel free to fork and develop.
https://github.com/ycagri/CircularLayout
End of Edit
You can use a custom layout given below. Number of items, inner radius and outer radius are defined in class. You can use those variables as custom layout attribute. The layout given below draws android launcher icon in the middle and around the circles. Titles are drawn below selection items.
Screenshot belongs to Nexus 7 device. Extra margin and padding can be defined to get better results on different screen resolutions.
public class CircleLayout extends View {
private final static int TOTAL_DEGREE = 360;
private final static int START_DEGREE = -90;
private Paint mPaint;
private RectF mOvalRect = null;
private int mItemCount = 5;
private int mSweepAngle;
private int mInnerRadius;
private int mOuterRadius;
private Bitmap mCenterIcon;
private int[] mColors = {Color.RED, Color.YELLOW, Color.GREEN, Color.BLUE, Color.CYAN};
private String[] mTitles = {"APPT CENTER", "MEDS CABINET", "CHECK-IN", "MY TRACKERS", "MY ACCOUNTS"};
public CircleLayout(Context context) {
this(context, null);
}
public CircleLayout(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public CircleLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mPaint.setStrokeWidth(2);
mSweepAngle = TOTAL_DEGREE / mItemCount;
mInnerRadius = 125;
mOuterRadius = 400;
mCenterIcon = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
}
#Override
protected void onDraw(Canvas canvas) {
int width = getWidth();
int height = getHeight();
if (mOvalRect == null) {
mOvalRect = new RectF(width / 2 - mOuterRadius, height / 2 - mOuterRadius, width / 2 + mOuterRadius, height / 2 + mOuterRadius);
}
for (int i = 0; i < mItemCount; i++) {
int startAngle = START_DEGREE + i * mSweepAngle;
mPaint.setColor(mColors[i]);
mPaint.setStyle(Paint.Style.FILL);
canvas.drawArc(mOvalRect, startAngle, mSweepAngle, true, mPaint);
mPaint.setColor(Color.BLACK);
mPaint.setStyle(Paint.Style.STROKE);
canvas.drawArc(mOvalRect, startAngle, mSweepAngle, true, mPaint);
int centerX = (int) ((mOuterRadius + mInnerRadius) / 2 * Math.cos(Math.toRadians(startAngle + mSweepAngle / 2)));
int centerY = (int) ((mOuterRadius + mInnerRadius) / 2 * Math.sin(Math.toRadians(startAngle + mSweepAngle / 2)));
canvas.drawBitmap(mCenterIcon, width / 2 + centerX - mCenterIcon.getWidth() / 2, height / 2 + centerY - mCenterIcon.getHeight() / 2, null);
mPaint.setColor(Color.BLACK);
mPaint.setStyle(Paint.Style.FILL);
canvas.drawText(mTitles[i], width / 2 + centerX - mCenterIcon.getWidth() / 2, height / 2 + centerY + mCenterIcon.getHeight(), mPaint);
}
mPaint.setColor(Color.WHITE);
mPaint.setStyle(Paint.Style.FILL);
canvas.drawCircle(width / 2, height / 2, mInnerRadius, mPaint);
canvas.drawBitmap(mCenterIcon, width / 2 - mCenterIcon.getWidth() / 2, height / 2 - mCenterIcon.getHeight() / 2, null);
super.onDraw(canvas);
}
}

Aligning drawableLeft with text of button

Here is my layout:
The issue I'm facing is with the drawable checkmark. How would I go about aligning it next to the text, both of them centered within the button? Here is the XML:
<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"
tools:context=".PostAssignmentActivity" >
<LinearLayout
style="?android:attr/buttonBarStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="horizontal" >
<Button
style="?android:attr/buttonBarButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:drawableLeft="#drawable/ic_checkmark_holo_light"
android:text="Post" />
<Button
style="?android:attr/buttonBarButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Cancel" />
</LinearLayout>
</RelativeLayout>
Applying android:gravity="center_vertical" pulls the text and drawable together, but then the text is no longer aligned in the center.

Solution 1
Set android:paddingLeft inside your first button. This will force the drawableLeft by paddingLeft amount to the right. This is the fast/hacky solution.
Solution 2
Instead of using a ButtonView, use a LinearLayout that contains both a textview and imageview. This is a better solution. It gives you more flexibility in the positioning of the checkmark.
Replace your ButtonView with the following code. You need the LinearLayout and TextView to use buttonBarButtonStyle so that the background colors are correct on selection and the text size is correct. You need to set android:background="#0000" for the children, so that only the LinearLayout handles the background coloring.
<LinearLayout
style="?android:attr/buttonBarButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal" >
<ImageView
style="?android:attr/buttonBarButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="false"
android:background="#0000"
android:src="#drawable/ic_checkmark_holo_light"/>
<TextView
style="?android:attr/buttonBarButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="false"
android:background="#0000"
android:text="Done" />
</LinearLayout>
Here are some screenshots I took while trying this out.

None of these solutions worked correctly without presenting unacceptable trade-offs (create a layout with views in it? Not a good idea). So why not roll your own? This is what I got:
First create an attrs.xml with this:
<resources>
<declare-styleable name="IconButton">
<attr name="iconSrc" format="reference" />
<attr name="iconSize" format="dimension" />
<attr name="iconPadding" format="dimension" />
</declare-styleable>
</resources>
This allows to create an icon with specific size, padding from text, and image in our new view. The view code looks like this:
public class IconButton extends Button {
private Bitmap mIcon;
private Paint mPaint;
private Rect mSrcRect;
private int mIconPadding;
private int mIconSize;
public IconButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context, attrs);
}
public IconButton(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public IconButton(Context context) {
super(context);
}
#Override
protected void onDraw(Canvas canvas) {
int shift = (mIconSize + mIconPadding) / 2;
canvas.save();
canvas.translate(shift, 0);
super.onDraw(canvas);
if (mIcon != null) {
float textWidth = getPaint().measureText((String)getText());
int left = (int)((getWidth() / 2f) - (textWidth / 2f) - mIconSize - mIconPadding);
int top = getHeight()/2 - mIconSize/2;
Rect destRect = new Rect(left, top, left + mIconSize, top + mIconSize);
canvas.drawBitmap(mIcon, mSrcRect, destRect, mPaint);
}
canvas.restore();
}
private void init(Context context, AttributeSet attrs) {
TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.IconButton);
for (int i = 0; i < array.getIndexCount(); ++i) {
int attr = array.getIndex(i);
switch (attr) {
case R.styleable.IconButton_iconSrc:
mIcon = drawableToBitmap(array.getDrawable(attr));
break;
case R.styleable.IconButton_iconPadding:
mIconPadding = array.getDimensionPixelSize(attr, 0);
break;
case R.styleable.IconButton_iconSize:
mIconSize = array.getDimensionPixelSize(attr, 0);
break;
default:
break;
}
}
array.recycle();
//If we didn't supply an icon in the XML
if(mIcon != null){
mPaint = new Paint();
mSrcRect = new Rect(0, 0, mIcon.getWidth(), mIcon.getHeight());
}
}
public static Bitmap drawableToBitmap (Drawable drawable) {
if (drawable instanceof BitmapDrawable) {
return ((BitmapDrawable)drawable).getBitmap();
}
Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
}
}
And then it can be used like this:
<com.example.grennis.myapplication.IconButton
android:layout_width="200dp"
android:layout_height="64dp"
android:text="Delete"
app:iconSrc="#android:drawable/ic_delete"
app:iconSize="32dp"
app:iconPadding="6dp" />
This works for me.

You can use
<com.google.android.material.button.MaterialButton/> .
https://material.io/develop/android/components/material-button/
It finally allows setting the icon gravity.
<com.google.android.material.button.MaterialButton
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:gravity="center"
android:text="Awesome button"
app:icon="#drawable/your_icon"
app:iconGravity="textStart" />

Here is a clean easy way, without doing anything fancy, to achieve the results of having a Button that is much wider than the content with Image and Text which are centered.
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:background="#drawable/button_background_selector">
<Button
android:layout_centerInParent="true"
android:gravity="center"
android:duplicateParentState="true"
android:layout_width="wrap_content"
android:text="New User"
android:textSize="15sp"
android:id="#android:id/button1"
android:textColor="#android:color/white"
android:drawablePadding="6dp"
android:drawableLeft="#drawable/add_round_border_32x32"
android:layout_height="64dp" />
</RelativeLayout>

In our case, we wanted to use the default Button class (to inherit its various styles and behaviors) and we needed to be able to create the button in code. Also, in our case we could have text, an icon (left drawable), or both.
The goal was to center the icon and/or text as a group when the button width was wider than wrap_content.
public class CenteredButton extends Button
{
public CenteredButton(Context context, AttributeSet attrs, int defStyleAttr)
{
super(context, attrs, defStyleAttr);
// We always want our icon and/or text grouped and centered. We have to left align the text to
// the (possible) left drawable in order to then be able to center them in our onDraw() below.
//
setGravity(Gravity.LEFT|Gravity.CENTER_VERTICAL);
}
#Override
protected void onDraw(Canvas canvas)
{
// We want the icon and/or text grouped together and centered as a group.
// We need to accommodate any existing padding
//
float buttonContentWidth = getWidth() - getPaddingLeft() - getPaddingRight();
// In later versions of Android, an "all caps" transform is applied to buttons. We need to get
// the transformed text in order to measure it.
//
TransformationMethod method = getTransformationMethod();
String buttonText = ((method != null) ? method.getTransformation(getText(), this) : getText()).toString();
float textWidth = getPaint().measureText(buttonText);
// Compute left drawable width, if any
//
Drawable[] drawables = getCompoundDrawables();
Drawable drawableLeft = drawables[0];
int drawableWidth = (drawableLeft != null) ? drawableLeft.getIntrinsicWidth() : 0;
// We only count the drawable padding if there is both an icon and text
//
int drawablePadding = ((textWidth > 0) && (drawableLeft != null)) ? getCompoundDrawablePadding() : 0;
// Adjust contents to center
//
float bodyWidth = textWidth + drawableWidth + drawablePadding;
canvas.translate((buttonContentWidth - bodyWidth) / 2, 0);
super.onDraw(canvas);
}
}

Here is my code and working perfect.
<Button
android:id="#+id/button"
android:layout_width="200dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:background="#drawable/green_btn_selector"
android:gravity="left|center_vertical"
android:paddingLeft="50dp"
android:drawableLeft="#drawable/plus"
android:drawablePadding="5dp"
android:text="#string/create_iou"
android:textColor="#color/white" />

public class DrawableCenterTextView extends TextView {
public DrawableCenterTextView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
}
public DrawableCenterTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public DrawableCenterTextView(Context context) {
super(context);
}
#Override
protected void onDraw(Canvas canvas) {
Drawable[] drawables = getCompoundDrawables();
if (drawables != null) {
Drawable drawableLeft = drawables[0];
Drawable drawableRight = drawables[2];
if (drawableLeft != null || drawableRight != null) {
float textWidth = getPaint().measureText(getText().toString());
int drawablePadding = getCompoundDrawablePadding();
int drawableWidth = 0;
if (drawableLeft != null)
drawableWidth = drawableLeft.getIntrinsicWidth();
else if (drawableRight != null) {
drawableWidth = drawableRight.getIntrinsicWidth();
}
float bodyWidth = textWidth + drawableWidth + drawablePadding;
canvas.translate((getWidth() - bodyWidth) / 2, 0);
}
}
super.onDraw(canvas);
}
}

This is now available in the Material Button by default with the app:iconGravity property. However, the Material Button does not allow for setting the background to a drawable (RIP gradients).
I converted the answers by #BobDickinson and #David-Medenjak above to kotlin and it works great.
import android.content.Context
import android.graphics.Canvas
import android.util.AttributeSet
import android.view.Gravity
import androidx.appcompat.widget.AppCompatButton
import kotlin.math.max
class CenteredButton #JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
defStyle: Int = R.attr.buttonStyle
) : AppCompatButton(context, attrs, defStyle) {
init {
gravity = Gravity.LEFT or Gravity.CENTER_VERTICAL
}
override fun onDraw(canvas: Canvas) {
val buttonContentWidth = (width - paddingLeft - paddingRight).toFloat()
var textWidth = 0f
layout?.let {
for (i in 0 until layout.lineCount) {
textWidth = max(textWidth, layout.getLineRight(i))
}
}
val drawableLeft = compoundDrawables[0]
val drawableWidth = drawableLeft?.intrinsicWidth ?: 0
val drawablePadding = if (textWidth > 0 && drawableLeft != null) compoundDrawablePadding else 0
val bodyWidth = textWidth + drawableWidth.toFloat() + drawablePadding.toFloat()
canvas.save()
canvas.translate((buttonContentWidth - bodyWidth) / 2, 0f)
super.onDraw(canvas)
canvas.restore()
}
}

I know it's a bit late, but if anyone looking for another answer, here is another way to add icon without the need to wrap button with a ViewGroup
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="#+id/btnCamera"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Click!"
android:textAllCaps="false"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
*need to set textAllCaps to false to make the spannable working
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val buttonLabelBuilder = SpannableStringBuilder(btnCamera.text)
val iconDrawable = AppCompatResources.getDrawable(this, R.drawable.ic_camera)
iconDrawable?.setBounds(0, 0, btnCamera.lineHeight, btnCamera.lineHeight)
val imageSpan = ImageSpan(iconDrawable, ImageSpan.ALIGN_BOTTOM)
buttonLabelBuilder.insert(0, "i ")
buttonLabelBuilder.setSpan(imageSpan, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
btnCamera.text = buttonLabelBuilder
}
}

I started with #BobDickinson's answer, but it did not cope well with multiple lines. The approach is good, because you still end up with a Button that can properly be reused.
Here is an adapted solution that will also work if the button has multiple lines (Please don't ask why.)
Just extend Button and use the following in onDraw, the getLineRight() is used to look up the actual length of each line.
#Override
protected void onDraw(Canvas canvas) {
// We want the icon and/or text grouped together and centered as a group.
// We need to accommodate any existing padding
final float buttonContentWidth = getWidth() - getPaddingLeft() - getPaddingRight();
float textWidth = 0f;
final Layout layout = getLayout();
if (layout != null) {
for (int i = 0; i < layout.getLineCount(); i++) {
textWidth = Math.max(textWidth, layout.getLineRight(i));
}
}
// Compute left drawable width, if any
Drawable[] drawables = getCompoundDrawables();
Drawable drawableLeft = drawables[0];
int drawableWidth = (drawableLeft != null) ? drawableLeft.getIntrinsicWidth() : 0;
// We only count the drawable padding if there is both an icon and text
int drawablePadding = ((textWidth > 0) && (drawableLeft != null)) ? getCompoundDrawablePadding() : 0;
// Adjust contents to center
float bodyWidth = textWidth + drawableWidth + drawablePadding;
canvas.save();
canvas.translate((buttonContentWidth - bodyWidth) / 2, 0);
super.onDraw(canvas);
canvas.restore();
}

Here is a another solution:
<LinearLayout
android:id="#+id/llButton"
android:layout_width="match_parent"
style="#style/button_celeste"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
style="#style/button_celeste"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawablePadding="10dp"
android:clickable="false"
android:drawableLeft="#drawable/icon_phone"
android:text="#string/call_runid"/>
</LinearLayout>
and the event:
LinearLayout btnCall = (LinearLayout) findViewById(R.id.llButton);
btnCall.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
call(runid.Phone);
}
});

I had the same issue, and I've come up with a solution that doesn't require XML changes or custom Views.
This code snippet retrieves the width of the text and the left/right drawables, and sets the Button's left/right padding so there will only be enough space to draw the text and the drawables, and no more padding will be added.
This can be applied to Buttons as well as TextViews, their superclasses.
public class TextViewUtils {
private static final int[] LEFT_RIGHT_DRAWABLES = new int[]{0, 2};
public static void setPaddingForCompoundDrawableNextToText(final TextView textView) {
ViewTreeObserver vto = textView.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
shinkRoomForHorizontalSpace(textView);
}
});
}
private static void shinkRoomForHorizontalSpace(TextView textView) {
int textWidth = getTextWidth(textView);
int sideCompoundDrawablesWidth = getSideCompoundDrawablesWidth(textView);
int contentWidth = textWidth + sideCompoundDrawablesWidth;
int innerWidth = getInnerWidth(textView);
int totalPadding = innerWidth - contentWidth;
textView.setPadding(totalPadding / 2, 0, totalPadding / 2, 0);
}
private static int getTextWidth(TextView textView) {
String text = textView.getText().toString();
Paint textPaint = textView.getPaint();
Rect bounds = new Rect();
textPaint.getTextBounds(text, 0, text.length(), bounds);
return bounds.width();
}
private static int getSideCompoundDrawablesWidth(TextView textView) {
int sideCompoundDrawablesWidth = 0;
Drawable[] drawables = textView.getCompoundDrawables();
for (int drawableIndex : LEFT_RIGHT_DRAWABLES) {
Drawable drawable = drawables[drawableIndex];
if (drawable == null)
continue;
int width = drawable.getBounds().width();
sideCompoundDrawablesWidth += width;
}
return sideCompoundDrawablesWidth;
}
private static int getInnerWidth(TextView textView) {
Rect backgroundPadding = new Rect();
textView.getBackground().getPadding(backgroundPadding);
return textView.getWidth() - backgroundPadding.left - backgroundPadding.right;
}
}
Notice that:
It actually still leaves some more space than needed (good enough for my purposes, but you may look for the error)
It overwrites whatever left/right padding is there. I guess it's not difficult to fix that.
To use it, just call TextViewUtils.setPaddingForCompoundDrawableNextToText(button) on your onCreate or onViewCreated().

There are several solutions to this problem. Perhaps the easiest on some devices is to use paddingRight and paddingLeft to move the image and text next to each other as below.
Original button
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginEnd="32dp"
android:layout_marginTop="16dp"
android:text="#string/scan_qr_code"
android:textColor="#color/colorPrimary"
android:drawableLeft="#drawable/ic_camera"
android:paddingRight="90dp"
android:paddingLeft="90dp"
android:gravity="center"
/>
The problem here is on smaller devices this padding can cause unfortunate problems such as this:
The other solutions are all some version of "build a button out of a layout an image and a textview". They work, but completely emulating a button can be tricky. I propose one more solution; "build a button out of a layout an image, a textview, and a button"
Here's the same button rendered as I propose:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginEnd="32dp"
android:layout_marginTop="16dp"
android:gravity="center"
>
<Button
android:id="#+id/scanQR"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/white_bg_button"
/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_centerInParent="true"
android:gravity="center"
android:elevation="10dp"
>
<ImageView
android:id="#+id/scanImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="8dp"
android:src="#drawable/ic_camera"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Button"
android:text="#string/scan_qr_code"
android:textColor="#color/colorPrimary"
/>
</LinearLayout>
</RelativeLayout>
As you can see, the button is now within a relative layout, but it's text and drawableLeft are not part of the button, they are in a separate layout that's placed on top of the button. With this, the button still acts like a button. The gotchas are:
The inner layout needs an elevation for newer versions of Android. The button itself has an elevation greater than the ImageView and TextView, so even though they are defined after the Button, they will still be "below" it in elevation and be invisible. Setting 'android:elevation' to 10 solves this.
The textAppearance of the TextView must be set so that it has the same appearance as it would in a button.

Another quite hacky alternative is to add blank spacer views with weight="1" on each side of the buttons. I don't know how this would affect performance.
<View
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1" />