我正在使用cardslib（https://github.com/gabrielemariotti/cardslib）创建一个带卡片的项目并使用毕加索（http://square.github.io/picasso/），以便动态创建卡片并使用我从Parse中检索到的网址将图片加载到其中一个for循环。
我遇到的问题是，即使我从Parse中检索到正确的数据，也只会在所有卡中加载一个图像。每个单独的卡正确加载标题，字幕等，只有图像在任何地方都相同。
我的代码是：
final ArrayList<Card> cards = new ArrayList<Card>();
final CardArrayAdapter mCardArrayAdapter = new CardArrayAdapter(this,cards);
mRecyclerView = (CardListView) this.findViewById(R.id.carddemo_largeimage_text);
AnimationAdapter animCardArrayAdapter = new SwingBottomInAnimationAdapter(mCardArrayAdapter);
animCardArrayAdapter.setAbsListView(mRecyclerView);
mRecyclerView.setExternalAdapter(animCardArrayAdapter, mCardArrayAdapter);
ParseQuery<ParseObject> query = ParseQuery.getQuery("places");
query.findInBackground(new FindCallback<ParseObject>() {
public void done(List<ParseObject> List, ParseException e) {
if (e == null) {
for ( i=0; i<List.size();i++){
id=new String();
id=List.get(i).getString("picture");
System.out.println(i+" "+ id);
MaterialLargeImageCard card =
MaterialLargeImageCard.with(mContext)
.setTextOverImage(List.get(i).getString("place_id"))
.setTitle(List.get(i).getString("subtitle"))
.setSubTitle(List.get(i).getString("description"))
.useDrawableExternal(new MaterialLargeImageCard.DrawableExternal() {
@Override
public void setupInnerViewElements(ViewGroup parent, View viewImage) {
Picasso.with(mContext).setIndicatorsEnabled(true); //only for debug tests
Picasso.with(mContext)
.load(id)
.error(R.drawable.ic_launcher)
.into((ImageView) viewImage);
}
})
.setupSupplementalActions(R.layout.carddemo_native_material_supplemental_actions_large, actions)
.build();
cards.add(card);
mCardArrayAdapter.notifyDataSetChanged();
card.setOnClickListener(new Card.OnCardClickListener() {
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void onClick(Card card, View view) {
Toast.makeText(mContext, " Click on ActionArea ", Toast.LENGTH_SHORT).show();
onClickStart();
Intent myIntent = new Intent(MainActivity.this, ParallaxToolbarScrollViewActivity.class);
//yIntent.putExtra("key", value); //Optional parameters
MainActivity.this.startActivity(myIntent);
}
});
}
} else {
Log.d("score", "Error: " + e.getMessage());
}
}
});
我使用的布局是： activity_main.xml中
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:card="http://schemas.android.com/apk/res-auto"
xmlns:pew="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<it.gmariotti.cardslib.library.view.CardListView
android:id="@+id/carddemo_largeimage_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card:list_card_layout_resourceID="@layout/rowcard"
style="@style/card_external"
/></RelativeLayout>
rowcard.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:card="http://schemas.android.com/apk/res-auto"
xmlns:pew="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<it.gmariotti.cardslib.library.view.CardViewNative
android:id="@+id/list_cardId"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card:card_layout_resourceID="@layout/native_material_largeimage_text_card"
style="@style/card_external"
/></RelativeLayout>
native_material_largeimage_text_card.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card="http://schemas.android.com/apk/res-auto"
xmlns:pew="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- Card visible layout -->
<it.gmariotti.cardslib.library.view.ForegroundLinearLayout
android:id="@+id/card_main_layout"
style="@style/card.native.main_layout_foreground"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<it.gmariotti.cardslib.library.view.component.CardThumbnailView
style="@style/card.native.card_thumbnail_outer_layout"
android:id="@+id/card_thumbnail_layout"
android:layout_width="match_parent"
card:card_thumbnail_layout_resourceID="@layout/native_thumbnail_largematerial"
android:layout_height="match_parent"/>
<!-- Main Content View -->
<FrameLayout
android:id="@+id/card_main_content_layout"
style="@style/card.native.material_large_image_content_outer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</it.gmariotti.cardslib.library.view.ForegroundLinearLayout>
<View
android:layout_width="fill_parent"
android:layout_height="1dp"
android:background="@color/greydiv"/>
<ViewStub
android:id="@+id/card_supplemental_actions_vs"
android:inflatedId="@+id/card_supplemental_actions"
android:layout_width="match_parent"
android:layout_height="wrap_content"/></LinearLayout>
和native_thumbnail_largematerial.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="@dimen/card_material_largeimage_height">
<com.fmsirvent.ParallaxEverywhere.PEWImageView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/card_thumbnail_image"
android:transitionName="test"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:scaleType="centerCrop"
style="@style/card.native.card_thumbnail_image"/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingRight="@dimen/card_thumbnail_image_text_over_padding_right"
android:paddingLeft="@dimen/card_thumbnail_image_text_over_padding_left"
android:paddingTop="@dimen/card_thumbnail_image_text_over_padding_top"
android:paddingBottom="@dimen/card_thumbnail_image_text_over_padding_bottom">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:fontFamily="@string/card_font_fontFamily_image_text_over"
android:id="@+id/card_thumbnail_image_text_over"
style="@style/card_thumbnail_image_text_over_textstyle"
/>
</FrameLayout></FrameLayout>
答案 0 :(得分：1)
我几乎把所有卡片都用在了CardsLib和picasso上。我建议你制作一个扩展卡的CustomCard，并接收一个ParseObject作为卡的参数。
它会使您的代码更简单，并且您可以通过这种方式将卡添加到列表中：
for(ParseObject p : List) {
cards.add(new MyCustomCard(mContext, p));
}
您的自定义卡片看起来像这样：
public class MyCustomCard extends Card implements Card.OnCardClickListener {
private static final String LOG_TAG = MyCustomCard.class.getSimpleName();
private ParseObject parseObject;
public MyCustomCard(Context context, ParseObject data) {
super(context, R.layout.my_custom_layout);
this.parseObject = data;
this.setOnClickListener(this);
}
@Override
public void setupInnerViewElements(ViewGroup parent, View view) {
super.setupInnerViewElements(parent, view);
ImageView imageView = (ImageView) view.findViewById(R.id.data_thumbnail);
TextView title = (TextView) view.findViewById(R.id.title);
TextView text = (TextView) view.findViewById(R.id.text);
if(parseObject != null) {
Picasso.with(getContext()).load(parseObject.getString("picture")).fit().into(imageView);
title.setText(parseObject.getString("title"));
text.setText(parseObject.getString("text"));
}
}
@Override
public void onClick(Card card, View view) {
// in case your cards need to click on something. You don't need to
// override onCLick if you don't wish to have click functionality on the cards
}
}
您甚至可以扩展MaterialLargeImageCard并使用它自己的XML而不是自己的XML。
我在github的一些项目中有一些Picasso示例的自定义卡片：check this project for more examples