问如何在没有任何空间的情况下精确地缩放活动以适应图像的数量

EN

public class BooksPage extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {


    int images[] = {R.drawable.phy,R.drawable.chem,R.drawable.drawable_logy,R.drawable.drawable_geology,R.drawable.bbs,R.drawable.drawable_chartered,R.drawable.bachelor,R.drawable.bachelor};

    String stream[]= {"MSC Physics","MSC Chemistry","MSC Biology",
            "MSC Geology","BBS|BBA","CA","Bachelor","+2 Science"};
    TextView navName,navEmail;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_books_page);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setTitle("पुस्तक किनबेच");

        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.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        View navHeaderView = navigationView.getHeaderView(0);
        navName = (TextView)navHeaderView.findViewById(R.id.nav_name);
        navEmail = (TextView)navHeaderView.findViewById(R.id.nav_mail);

        navigationView.setNavigationItemSelectedListener(this);

        RecyclerView favPlaces = (RecyclerView) findViewById(R.id.favPlaces);
        StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL);
        layoutManager.setGapStrategy(StaggeredGridLayoutManager.GAP_HANDLING_NONE);
        favPlaces.setLayoutManager(layoutManager);
        favPlaces.setHasFixedSize(true);
        ArrayList<BookDetails> placeList = getPlaces();

        if (!isNetworkStatusAvialable(this)) {


            Toast.makeText(this, "No Internet!", Toast.LENGTH_SHORT).show();



        }

        StaggeredAdapter staggeredAdapter = new StaggeredAdapter(this,placeList);
        favPlaces.setAdapter(staggeredAdapter);
        navName.setText(PreferenceManager.getDefaultSharedPreferences(this).getString("name","null"));
        navEmail.setText(PreferenceManager.getDefaultSharedPreferences(this).getString("email","null"));
    }
    private ArrayList<BookDetails> getPlaces() {
        ArrayList<BookDetails> details = new ArrayList<>();
        for (int index=0; index<images.length;index++){
            details.add(new BookDetails(images[index],stream[index]));
        }
        return details;
    }

   

}

<?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:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.v7.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:cardUseCompatPadding="true"
        app:cardCornerRadius="4dp">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            android:background="@color/colorPrimaryDark">

            <ImageView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/placePic"
                android:adjustViewBounds="true"
                android:scaleType="fitXY" />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/placeName"
                android:textStyle="bold"
                android:textColor="#ffffff"
                android:fontFamily="sans-serif-condensed"
                android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"
                android:gravity="center"
                android:textSize="16sp"/>


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

</LinearLayout>