Ниже приведены некоторые основные шаги для создания шахматной сетки в Oodles Technologies.
Создайте представление.
Установите StaggeredGridLayout LayoutManager.
Адаптер для увеличения представлений с шахматной сеткой.
1- Создайте вид-
Как мы знаем, staggeredgrid не является прямым представлением, это менеджер компоновки, который размещает дочерние элементы в шахматном порядке. Мы используем RecyclerView как представление для шахматной сетки.
Вот наш recyclerview в макете:
<relativelayout android:layout_height="match_parent" android:layout_width="match_parent" android:paddingtop="@dimen/activity_vertical_margin" tools:context="com.deepanshu.staggered_gridlayout.MainActivity" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools">
<android.support.v7.widget.recyclerview android:id="@+id/favPlaces" android:layout_height="match_parent" android:layout_width="match_parent">
</android.support.v7.widget.recyclerview></relativelayout>
2- Установите StaggeredGridLayout LayoutManager. Наше представление готово, давайте используем Layoutmanager для создания сетки в представлении.
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);
3- Адаптер для раздувания представлений с разнесенной сеткой. Чтобы раздуть данные в виде сетки, сначала нам нужен макет, который будет представлять эти данные. Для этого мы используем CardView, а макет -
<android.support.v7.widget.cardview android:layout_height="wrap_content" android:layout_width="match_parent" app:cardcornerradius="4dp" app:cardusecompatpadding="true">
<linearlayout android:background="@color/colorPrimary" android:layout_height="match_parent" android:layout_width="match_parent" android:orientation="vertical">
<imageview android:adjustviewbounds="true" android:id="@+id/placePic" android:layout_height="match_parent" android:layout_width="match_parent" android:scaletype="fitXY">
<textview android:gravity="center" android:id="@+id/placeName" android:layout_height="wrap_content" android:layout_width="match_parent" android:textsize="16sp">
</textview></imageview></linearlayout>
</android.support.v7.widget.cardview>
</linearlayout>
Now we have our layout to inflate the data. Let's bind the data on view with the help of adapter-
public class StaggeredAdapter extends
RecyclerView.Adapter
<staggeredadapter.viewholder>{
private ArrayList<placedetails> placeList;
// Provide a reference to the views for each data item
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView placeName;
public ImageView placePic;
public ViewHolder(View itemView) {
super(itemView);
placeName = (TextView) itemView.findViewById(R.id.placeName);
placePic = (ImageView) itemView.findViewById(R.id.placePic);
}
}
public StaggeredAdapter(ArrayList<placedetails> placeList){
this.placeList = placeList;
}
// Create new views (invoked by the layout manager)
@Override
public StaggeredAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.staggered_layout, parent, false);
// set the view's size, margins, paddings and layout parameters
return new ViewHolder(v);
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.placeName.setText(placeList.get(position).getName());
holder.placePic.setImageResource(placeList.get(position).getImageUrl());
}
// Return the size of your dataset (invoked by the layout manager)
@Override
public int getItemCount() {
return placeList.size();
}
}
</staggeredadapter.viewholder>
We setup our all the basic steps, it's time to complete our main activity. here is the complete code of main activity-
public class MainActivity extends AppCompatActivity {
int placeImage[]= {R.drawable.agattia_airport_lakshadweep,R.drawable.nainital,R.drawable.goa,
R.drawable.lotus_temple,R.drawable.valley_of_flowers,R.drawable.ranikhet,R.drawable.dehradun,R.drawable.nainital1};
String placeName[]= {"Lakshadweep, India","Nainital, India","Goa, India","Lotus-Temple, India","Valley-Of-Flowers, India","Ranikhet, India",
"Dehradun, India","Nainital, India"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
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<PlaceDetails> placeList = getPlaces();
StaggeredAdapter staggeredAdapter = new StaggeredAdapter(placeList);
favPlaces.setAdapter(staggeredAdapter);
}
private ArrayList<PlaceDetails> getPlaces() {
ArrayList<PlaceDetails> details = new ArrayList<>();
for (int index=0; index<placeImage.length;index++){
details.add(new PlaceDetails(placeImage[index],placeName[index]));
}
return details;
}
}
минчар
person
Saurabh tiwary
schedule
12.10.2016
