rasoulmiri

public class MainActivity extends AppCompatActivity {

    private RecyclerView recyclerView;
    ProgressBar progressBar;
    ImageView header;
    private WatchAdapter adapter;
    private List<Watch> watchList;

    private int[] thumbnails = new int[]{R.drawable.watch_1, R.drawable.watch_2, R.drawable.watch_3, R.drawable.watch_4};
    private String[] brands = new String[]{"Nike Sport Band","Nike Sport Band","Nike Sport Band","Nike Sport Band"};

rasoulmiri

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/gray"
    android:descendantFocusability="beforeDescendants"
    android:fitsSystemWindows="true"
    android:focusableInTouchMode="true">

rasoulmiri

class WatchAdapter extends RecyclerView.Adapter<WatchAdapter.MyViewHolder> {
    private Context context;
    private List<Watch> watchList;

    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView brand, color;
        ImageView thumbnail;

        MyViewHolder(View view) {
            super(view);

rasoulmiri

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.v7.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:layout_margin="8dp"

rasoulmiri

<resources>
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        //...
    </style>
</resources>

rasoulmiri

<resources>
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:windowBackground">@null</item>
        //...
    </style>
</resources>

rasoulmiri

<resources>
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:windowBackground">@color/gray</item>
        //...
    </style>
</resources>

rasoulmiri

//after 7 second photo load in imageView
//timer for show phoyo
new Handler().postDelayed(new Runnable() {
    @Override
    public void run() {
      header.setImageResource(R.drawable.header_watches);
    }
}, 7000);

rasoulmiri

//after 7 second photo load in imageView
//timer for show phoyo
new Handler().postDelayed(new Runnable() {
    @Override
    public void run() {
      header.setImageResource(R.drawable.header_watches);
      progressBar.setVisibility(View.GONE);
    }
}, 7000);