Android Adventures – Development Tips – Parte 2

How to add an icon to a button?

android:drawableLeft=”@android:drawable/ic_menu_search”

How to push a button in a LinearLayout to the right?

The trick in is the empty view

<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.05"
android:orientation="horizontal">
<TextView android:text="@string/RegExTitle"
android:textColor="@color/colorPrimaryDark"
android:gravity="center_vertical|start"
android:layout_marginStart="7dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"/>
<Button
android:gravity="center_vertical|end"
android:layout_marginEnd="7dp"
android:drawableLeft="@android:drawable/ic_menu_delete"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</LinearLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_weight="0.05"

android:orientation="horizontal">

<TextView android:text="@string/RegExTitle"

android:textColor="@color/colorPrimaryDark"

android:gravity="center_vertical|start"

android:layout_marginStart="7dp"

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

<View

android:layout_width="0dp"

android:layout_height="0dp"

android:layout_weight="1"/>

<Button

android:gravity="center_vertical|end"

android:layout_marginEnd="7dp"

android:drawableLeft="@android:drawable/ic_menu_delete"

android:layout_width="wrap_content"

android:layout_height="wrap_content">

</LinearLayout>

How to have an ImageButton transparent?

android:background=”@null”

How to clear all the Spannable styles in an EditText?

val currentPositionsInputText = contentTextEditBox.selectionStart
contentTextEditBox.setText(contentTextEditBox.text.toString())

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