How to create EditText with cross(x) button at end of it?

Use the following layout:

<FrameLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="9dp"
    android:padding="5dp">

    <EditText
        android:id="@+id/calc_txt_Prise"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="numberDecimal"  
        android:layout_marginTop="20dp"
        android:textSize="25dp"
        android:textColor="@color/gray"
        android:textStyle="bold"
        android:hint="@string/calc_txt_Prise"
        android:singleLine="true" />

    <Button
        android:id="@+id/calc_clear_txt_Prise"      
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginRight="10dp"
        android:layout_gravity="right|center_vertical"
        android:background="@drawable/delete" />

</FrameLayout>

You can also use the button's id and perform whatever action you want on its onClickListener method.

If you happen to use DroidParts, I've just added ClearableEditText.

Here's what it looks like with a custom background & clear icon set to abs__ic_clear_holo_light from ActionBarSherlock:

2020 solution via Material Design Components for Android:

Add Material Components to your gradle setup:

Look for latest version from here: https://maven.google.com/

implementation 'com.google.android.material:material:1.1.0'

or if you havent updated to using AndroidX libs, you can add it this way:

implementation 'com.android.support:design:28.0.0'

Then

<com.google.android.material.textfield.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/hint_text"
    app:endIconMode="clear_text">

  <com.google.android.material.textfield.TextInputEditText
      android:layout_width="match_parent"
      android:layout_height="wrap_content"/>

</com.google.android.material.textfield.TextInputLayout>

Pay attention to: app:endIconMode="clear_text"

As discussed here Material design docs