-5
我試圖實現卡片視圖列表，並且列表沒問題，但卡片內的佈局與我在XML中定義的完全不同。任何想法爲什麼這不能正確顯示？這是我的名片XML：卡布局參數不起作用
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
android:id="@+id/cvAdvertFavourite"
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:layout_marginTop="2dip"
android:layout_marginBottom="2dip"
card_view:cardUseCompatPadding="true"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="8dp"
>
<ImageView
android:id="@+id/ivCardFavouriteAnimalPhoto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginRight="8dp"
/>
<TextView
android:id="@+id/tvCardFavouriteTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/ivCardFavouriteAnimalPhoto"
android:textSize="30sp"
/>
<TextView
android:id="@+id/tvCardFavouriteRace"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/tvCardFavouriteTitle"
android:layout_toRightOf="@+id/ivCardFavouriteAnimalPhoto"
/>
<TextView
android:id="@+id/tvCardFavouritePrice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/tvCardFavouriteRace"
android:layout_toRightOf="@+id/ivCardFavouriteAnimalPhoto"
/>
</RelativeLayout>
</android.support.v7.widget.CardView>
我用這個RecyclerView XML：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp"
>
<android.support.v7.widget.RecyclerView
android:id="@+id/rvCardFavourite"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
這裏是我的CardItem類：
public class FavouriteCardItem {
Bitmap animal;
int price;
String title, race;
public FavouriteCardItem(Bitmap animal, int price, String title, String race){
this.animal = animal;
this.price = price;
this.title = title;
this.race = race;
}
public Bitmap getAnimal() {
return animal;
}
public void setAnimal(Bitmap animal) {
this.animal = animal;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getRace() {
return race;
}
public void setRace(String race) {
this.race = race;
}
}
這裏是我打電話給我的適配器和設置數據適配器：
private void loadSetData() {
List<FavouriteCardItem> items = new ArrayList<FavouriteCardItem>();
Bitmap bitmap = BitmapFactory.decodeResource(getActivity().getResources(),
R.drawable.bird);
FavouriteCardItem item1 = new FavouriteCardItem(bitmap, 100, "birds", "birds");
items.add(item1);
Bitmap bitmap2 = BitmapFactory.decodeResource(getActivity().getResources(),
R.drawable.dog);
FavouriteCardItem item2 = new FavouriteCardItem(bitmap2, 200, "dogs", "dogs");
items.add(item2);
Bitmap bitmap3 = BitmapFactory.decodeResource(getActivity().getResources(),
R.drawable.cat);
FavouriteCardItem item3 = new FavouriteCardItem(bitmap3, 1000, "cats", "cats");
items.add(item3);
FavouriteCardAdapter adapter = new FavouriteCardAdapter(getActivity(), R.layout.card_view, items);
recyclerView.setAdapter(adapter);
}
這是我的適配器類：
public class FavouriteCardAdapter extends RecyclerView.Adapter<FavouriteCardAdapter.CardViewHolder> {
private Context mContext;
private int resourceId;
List<FavouriteCardItem> cardItems;
public FavouriteCardAdapter(Context context, int resource, List<FavouriteCardItem> cardItems){
mContext = context;
resourceId = resource;
this.cardItems = cardItems;
}
@Override
public CardViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_view, parent, false);
CardViewHolder cvh = new CardViewHolder(v);
return cvh;
}
@Override
public void onBindViewHolder(CardViewHolder holder, int position) {
DisplayMetrics metrics = Resources.getSystem().getDisplayMetrics();
int screenHeight = metrics.heightPixels;
holder.cardView.getLayoutParams().height = screenHeight/4;
int price = cardItems.get(position).getPrice();
String price1 = Integer.toString(price);
holder.tvPrice.setText(price1);
holder.tvRace.setText(cardItems.get(position).getRace());
holder.tvTitle.setText(cardItems.get(position).getTitle());
holder.ivAnimal.setImageBitmap(cardItems.get(position).getAnimal());
}
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
@Override
public int getItemCount() {
return cardItems.size();
}
public class CardViewHolder extends RecyclerView.ViewHolder{
CardView cardView;
ImageView ivAnimal;
TextView tvPrice, tvTitle, tvRace;
public CardViewHolder(View itemView) {
super(itemView);
cardView = (CardView) itemView.findViewById(R.id.cvAdvertFavourite);
ivAnimal = (ImageView) itemView.findViewById(R.id.ivCardFavouriteAnimalPhoto);
tvPrice = (TextView) itemView.findViewById(R.id.tvCardFavouritePrice);
tvTitle = (TextView) itemView.findViewById(R.id.tvCardFavouriteTitle);
tvRace = (TextView) itemView.findViewById(R.id.tvCardFavouriteRace);
}
}
}
BTW我知道我不應該加載這樣的圖像等，但我只是想創造一些測試數據得到的佈局之前，我開始加載來自在線數據存儲的數據。
下面是整個卡片視圖的樣子。它應該有3個textViews和1個ImageView的，但它只能說明一個ImageView的.....
改變寬度和ImageView的（ivCardFavouriteAnimalPhoto）的高度從包裹內容... 150dp然後你就會明白，而只有ImageView的情況下才會顯示 –
因爲150dp是支持多屏幕尺寸？ –
我的觀點是圖像視圖消耗了大部分空間，因此沒有剩餘空間用於textview .... Infact即使您在相對佈局中刪除了8dp的填充，圖像也會觸摸卡邊界...您可以檢查它。 –