android - 创建一个类似于 Android Lollipop 的 Speed Dial 的 View

Question

我如何创建一个类似于 Android Lollipop 中引入的快速拨号的 View ，当我们按下电话图标时可以找到它？图像如下所示，其中隐藏了联系人图像和联系人姓名。

编辑:到现在为止，我已经得到了这么多，并且正在寻找更多可以改进的地方。本示例使用 Fragment 中的 GridView。

public class XYZFragment extends Fragment {

    private View rootView;

    GridView gridView;
    ArrayList<Item> gridArray = new ArrayList<Item>();
    CustomGridViewAdapter customGridAdapter;

    public XYZFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

        rootView = inflater.inflate(R.layout.fragment_XYZ, container, false);

        //set grid view item
        Bitmap homeIcon = BitmapFactory.decodeResource(this.getResources(), R.drawable.ic_home);
        Bitmap userIcon = BitmapFactory.decodeResource(this.getResources(), R.drawable.ic_communities);

        gridArray.add(new Item(homeIcon,"Home"));
        gridArray.add(new Item(userIcon,"User"));
        gridArray.add(new Item(homeIcon,"House"));
        gridArray.add(new Item(userIcon,"Friend"));
        gridArray.add(new Item(homeIcon,"Home"));
        gridArray.add(new Item(userIcon,"Personal"));
        gridArray.add(new Item(homeIcon,"Home"));
        gridArray.add(new Item(userIcon,"User"));
        gridArray.add(new Item(homeIcon,"Building"));
        gridArray.add(new Item(userIcon,"User"));
        gridArray.add(new Item(homeIcon,"Home"));
        gridArray.add(new Item(userIcon,"xyz"));


        gridView = (GridView) rootView.findViewById(R.id.gridView1);
        customGridAdapter = new CustomGridViewAdapter(getActivity(), R.layout.row_grid, gridArray);
        gridView.setAdapter(customGridAdapter);

        return rootView;
        }
    }

行网格.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="5dp" >

    <ImageView
        android:id="@+id/item_image"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_marginRight="10dp"
        android:src="@drawable/ic_home" >
    </ImageView>

    <TextView
        android:id="@+id/item_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:textSize="15sp" >
    </TextView>

</LinearLayout>

fragment _xyz.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin">

    <GridView
        android:id="@+id/gridView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="4dp"
        android:columnWidth="80dp"
        android:gravity="center"
        android:numColumns="auto_fit"
        android:stretchMode="columnWidth" >
    </GridView>

</RelativeLayout>

项目.java

public class Item {
    Bitmap image;
    String title;

    public Item(Bitmap image, String title) {
        super();
        this.image = image;
        this.title = title;
    }
    public Bitmap getImage() {
        return image;
    }
    public void setImage(Bitmap image) {
        this.image = image;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
}

CustomGridViewAdapter.java

public class CustomGridViewAdapter extends ArrayAdapter<Item> {
    Context context;
    int layoutResourceId;
    ArrayList<Item> data = new ArrayList<Item>();

    public CustomGridViewAdapter(Context context, int layoutResourceId,
        ArrayList<Item> data) {
        super(context, layoutResourceId, data);
        this.layoutResourceId = layoutResourceId;
        this.context = context;
        this.data = data;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row = convertView;
        RecordHolder holder = null;

        if (row == null) {
            LayoutInflater inflater = ((Activity) context).getLayoutInflater();
            row = inflater.inflate(layoutResourceId, parent, false);
            holder = new RecordHolder();
            holder.txtTitle = (TextView) row.findViewById(R.id.item_text);
            holder.imageItem = (ImageView) row.findViewById(R.id.item_image);
            row.setTag(holder);
        } else {
            holder = (RecordHolder) row.getTag();
        }

        Item item = data.get(position);
        holder.txtTitle.setText(item.getTitle());
        holder.imageItem.setImageBitmap(item.getImage());
        return row;
    }

    static class RecordHolder {
        TextView txtTitle;
        ImageView imageItem;
    }
}

Answer 1

更改 GridView

<GridView
        android:id="@+id/gridView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="4dp"
        android:columnWidth="80dp"
        android:gravity="center"
        android:verticalSpacing="2dp"
        android:horizontalSpacing="2dp"
        android:numColumns="auto_fit"
        android:background="#abcdef"
        android:stretchMode="columnWidth" >

然后在您的 GridAdapter 中获取行 xml 的父 ID 并在运行时设置背景颜色。