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Я хочу наложить элемент Cardview на панель инструментов. И на этапе предварительного просмотра все отображается правильно. Однако после компиляции Cardview находится под панелью инструментов. В чем может быть проблема? Спасибо вам!

Скриншот. Это должно быть.:

Скриншот. Как получилось.:

API 22. Здесь и там.

Структура моего проекта: файл «activity_documents» (есть левая навигация) -> файл «app_bar_document» (есть панель инструментов) -> файл «content_documents»

Мой код: «activity_documents»:

 <?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
    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:id="@ id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <android.support.v7.widget.ContentFrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <include
            layout="@layout/app_bar_documents_type"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </android.support.v7.widget.ContentFrameLayout>

    <android.support.design.widget.NavigationView
        android:id="@ id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_documents_type"
        app:menu="@menu/activity_documents_type_drawer" />

</android.support.v4.widget.DrawerLayout>
  

«app_bar_documents»:

 <?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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"
    android:fitsSystemWindows="true"
    tools:context=".DocumentsTypeActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@ id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/back_toolbar_documents"
            android:minHeight="?attr/actionBarSize"
            app:popupTheme="@style/AppTheme.PopupOverlay"
            app:titleTextColor="@android:color/white">

            <TextView
                android:id="@ id/textview_documents"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal|top"
                android:text="Документы"
                android:textColor="@android:color/background_light" />

        </android.support.v7.widget.Toolbar>
        <!--android:background="?attr/colorPrimary"-->

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_documents_type"/>
    <!--<include layout="@layout/content_doc"/>-->

    <android.support.design.widget.FloatingActionButton
        android:id="@ id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin" />

</FrameLayout>
  

«content_documents»

 <?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".DocumentsTypeActivity"
    tools:showIn="@layout/app_bar_documents_type">

    <LinearLayout
        android:id="@ id/linearLayout2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center_horizontal"
            android:orientation="horizontal">
            <android.support.v7.widget.CardView
                android:id="@ id/cardView_1"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="20dp"
                android:layout_marginTop="65dp"
                android:layout_marginEnd="20dp"
                app:cardBackgroundColor="@android:color/background_light"
                app:cardCornerRadius="6dp"
                app:cardElevation="4dp"
                app:cardUseCompatPadding="true"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="1.0"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="20dp"
                        android:gravity="center_horizontal"
                        android:orientation="horizontal">

                        <android.support.v7.widget.AppCompatImageView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_horizontal"
                            android:src="@drawable/ic_documents_multipass" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="20dp"
                        android:gravity="center_horizontal"
                        android:orientation="horizontal">

                        <android.support.v7.widget.AppCompatTextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="MultiPass.One"
                            android:textColor="@android:color/background_dark"
                            android:textSize="16sp"
                            app:fontFamily="sans-serif-black" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="5dp"
                        android:layout_marginBottom="20dp"
                        android:gravity="center_horizontal"
                        android:orientation="horizontal">

                        <android.support.v7.widget.AppCompatTextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="Ваш международный n документ"
                            android:textAlignment="center"
                            android:textColor="@android:color/background_dark" />
                    </LinearLayout>

                </LinearLayout>

            </android.support.v7.widget.CardView>
        </LinearLayout>

    </LinearLayout>

</FrameLayout>
  

DocumentActivity:

 package com.multipassone;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

public class DocumentsTypeActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_documents_type);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setTitle(null);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.addDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
    }

}