Crop image

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    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="io.github.amadeu01.cameraproportions.MainActivity">

    <FrameLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerInParent="true"/>

    <View android:id="@+id/view_crop"
        android:layout_width="300dp"
        android:layout_height="200dp"
        android:layout_centerInParent="true"
        android:background="@drawable/rounded_rectangle" />

    <Button
        android:id="@+id/addCameraButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="15dp"
        tools:visibility="gone"
        android:onClick="onAddCameraClicked"
        android:text="Add camera" />

    <RelativeLayout
        android:id="@+id/cameraLayout"
        android:visibility="gone"
        tools:visibility="visible"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="60dp"
            android:layout_alignParentEnd="true"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:paddingTop="10dp">

            <com.github.florent37.camerafragment.widgets.CameraSettingsView
                android:id="@+id/settings_view"
                android:layout_width="40dp"
                android:layout_height="40dp"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:layout_centerVertical="true"
                android:onClick="onSettingsClicked"
                android:layout_marginLeft="15dp"
                />

            <com.github.florent37.camerafragment.widgets.FlashSwitchView
                android:id="@+id/flash_switch_view"
                android:onClick="onFlashSwitcClicked"
                android:layout_width="40dp"
                android:layout_height="40dp"
                android:layout_centerInParent="true" />

            <com.github.florent37.camerafragment.widgets.CameraSwitchView
                android:id="@+id/front_back_camera_switcher"
                android:onClick="onSwitchCameraClicked"
                android:layout_width="40dp"
                android:layout_height="40dp"
                android:layout_alignParentRight="true"
                android:layout_alignParentEnd="true"
                android:layout_centerVertical="true"
                android:layout_marginRight="15dp"
                android:layout_marginEnd="15dp"
                />

        </RelativeLayout>

        <RelativeLayout
            android:id="@+id/record_panel"
            android:layout_width="match_parent"
            android:layout_height="150dp"
            android:background="@android:color/transparent"
            android:layout_alignParentBottom="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true">

            <com.github.florent37.camerafragment.widgets.RecordButton
                android:id="@+id/record_button"
                android:onClick="onRecordButtonClicked"
                android:layout_width="75dp"
                android:layout_height="75dp"
                android:layout_centerInParent="true"
                android:layout_marginLeft="50dp"
                android:layout_marginRight="50dp" />

            <TextView
                android:id="@+id/record_duration_text"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_toLeftOf="@id/record_button"
                android:layout_toStartOf="@id/record_button"
                android:textColor="@android:color/white"
                android:textSize="14sp"
                android:visibility="invisible" />

            <TextView
                android:id="@+id/record_size_mb_text"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_toRightOf="@id/record_button"
                android:layout_toEndOf="@id/record_button"
                android:textColor="@android:color/white"
                android:textSize="14sp"
                android:visibility="invisible" />

            <com.github.florent37.camerafragment.widgets.MediaActionSwitchView
                android:id="@+id/photo_video_camera_switcher"
                android:onClick="onMediaActionSwitchClicked"
                android:layout_width="40dp"
                android:layout_height="40dp"
                android:checked="false"
                android:gravity="center"
                android:layout_centerVertical="true"
                android:layout_toRightOf="@+id/record_size_mb_text"
                android:layout_toEndOf="@+id/record_size_mb_text"
                android:layout_marginLeft="24dp"
                android:layout_marginStart="24dp" />

        </RelativeLayout>

    </RelativeLayout>

</RelativeLayout>