首先，这是一个屏幕截图(抱歉，绘画编辑很差):
您可能已经注意到，只有中间一行有一个图标(绿色圆圈)，但是，我正在设置所有行的图标，或者也许我认为我是。 图标可以是绿色或红色，第一行应显示绿色图标，最后一行应显示一个红色图标，但它们都没有显示任何内容，仅显示第二行，所以我的问题是，为什么我的行中只有一行显示图标正确地，当然，我该如何解决它？
这是我的适配器代码:
//imports and stuff
public class EstablishmentAdapter extends RecyclerView.Adapter<EstablishmentViewHolder> {
private ArrayList<EstablishmentModel> establishmentList;
private Context context;
private boolean hasPermission;
private int selectedPosition = 0;
public EstablishmentAdapter(ArrayList<EstablishmentModel> establishmentList, Context context, boolean hasPermission) {
this.establishmentList = establishmentList;
this.context = context;
this.hasPermission = hasPermission;
}
@Override
public EstablishmentViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
EstablishmentViewHolder viewHolder;
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_adapter_establishment, parent, false);
viewHolder = new EstablishmentViewHolder(v, (byte)0, hasPermission);
return viewHolder;
}
@Override
public void onBindViewHolder(EstablishmentViewHolder holder, final int position) {
final EstablishmentModel item = establishmentList.get(position);
Log.d(((EstablishmentActivity)context).logTagDebug, "Position: "+ String.valueOf(position));
Log.d(((EstablishmentActivity)context).logTagDebug, "ViewHolder: "+ String.valueOf(holder.getAdapterPosition()));
setUpTextFieldsItemRow(holder, item);
new ImageDonwloaderTask(holder.ivIcon).execute(item.getIconUrl());
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
notifyItemChanged(selectedPosition);
selectedPosition = position;
notifyItemChanged(selectedPosition);
//Se a gente botar o full, fazer switch case aqui
setUpPayContractTypeAction(item);
}
});
}
private void setUpTextFieldsItemRow(EstablishmentViewHolder holder, EstablishmentModel item) {
holder.tvClosingTime.setText(item.getClosingTime());
holder.tvOpeningTime.setText(item.getOpeningTime());
holder.tvName.setText(item.getName());
holder.tvType.setText(item.getType());
if (item.isOpened()) {
holder.ivWorkingStatus.setImageResource(R.drawable.img_dot_green);
} else {
holder.ivWorkingStatus.setImageResource(R.drawable.img_dot_red);
}
}
private void setUpPayContractTypeAction(EstablishmentModel item) {
if(item.isOpened()) {
PaymentInfoViewModel p = new PaymentInfoViewModel();
p.setIdEstablishment(item.getIdEstablishment());
p.setNameEstablishment(item.getName());
Intent intent = new Intent(context, CardNumberActivity.class);
intent.putExtra(ConstantsUtils.PARAM_INTENT_PAYMENT_INFO, p);
context.startActivity(intent);
}
else {
EstablishmentActivity activity = ((EstablishmentActivity) context);
String title = String.format(context.getString(R.string.str_msg_error_closed_establishment_title),
item.getName());
String message = String.format(context.getString(R.string.str_msg_error_closed_establishment_msg),
item.getName(), item.getOpeningTime(), item.getClosingTime());
activity.buildAlert(title, message).show();
}
}
@Override
public int getItemCount() {
return establishmentList.size();
}
}
这是 Activity 布局文件:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
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:id="@+id/dl_menu"
android:elevation="7dp"
tools:context=".view.activity.EstablishmentActivity">
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/srl_refresh_establishments"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_establishments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.SwipeRefreshLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_menu_drawer"
android:layout_width="320dp"
android:layout_height="match_parent"
android:layout_gravity="left|start"
android:background="#ffffff">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.DrawerLayout>
项目行布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<ImageView
android:id="@+id/iv_establishment_icon"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginStart="@dimen/margin_horizontal_small"
android:layout_marginLeft="@dimen/margin_horizontal_small"
android:layout_marginEnd="@dimen/margin_horizontal_small"
android:layout_marginRight="@dimen/margin_horizontal_small"
android:layout_marginTop="@dimen/margin_vertical_small"
>
</ImageView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/tv_establishment_name"
android:layout_marginTop="@dimen/margin_vertical_normal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="@dimen/font_size_large"
android:text="Bar Alternativo"
android:textColor="@color/black"
>
</TextView>
<RelativeLayout
android:layout_marginTop="@dimen/margin_vertical_small"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/tv_establishment_type"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="@dimen/font_size_tiny"
android:text="Pub / Bar"
android:textColor="@color/gray_60_percent"
>
</TextView>
<ImageView
android:id="@+id/iv_establishment_working_status_icon"
android:src="@drawable/img_dot_green"
android:layout_marginStart="@dimen/margin_horizontal_big"
android:layout_marginLeft="@dimen/margin_horizontal_big"
android:layout_toRightOf="@+id/tv_establishment_type"
android:layout_toEndOf="@+id/tv_establishment_type"
android:layout_width="17dp"
android:layout_height="17dp" />
</RelativeLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="horizontal"
>
<TextView
android:id="@+id/tv_establishment_opening_time"
android:layout_marginTop="@dimen/margin_vertical_normal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="@dimen/font_size_very_tiny"
android:textColor="@color/gray_30_percent"
android:text="19:00"
>
</TextView>
<TextView
android:id="@+id/tv_establishment_separator_time"
android:layout_marginTop="@dimen/margin_vertical_normal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="@dimen/font_size_very_tiny"
android:text="@string/str_screen_txt_hyphen"
android:textColor="@color/gray_30_percent"
>
</TextView>
<TextView
android:id="@+id/tv_establishment_closing_time"
android:layout_marginTop="@dimen/margin_vertical_normal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="@dimen/font_size_very_tiny"
android:text="02:00"
android:textColor="@color/gray_30_percent"
>
</TextView>
<TextView
android:id="@+id/tv_establishment_place_distance"
android:layout_marginTop="10dp"
android:layout_width="wrap_content"
android:layout_marginLeft="@dimen/margin_horizontal_normal"
android:layout_marginStart="@dimen/margin_horizontal_normal"
android:layout_height="wrap_content"
android:textSize="@dimen/font_size_very_tiny"
>
</TextView>
</LinearLayout>
</LinearLayout>
</LinearLayout>
编辑: 我尝试编辑图标的大小，它反射(reflect)在所有行的大小中，所以我认为 ImageView 在 laoyut 中，但没有图像。
编辑2
添加红点和绿点:
但是我不认为图像是问题所在，因为第一行应该显示绿点，但事实并非如此。
编辑3 这是我的观众:
public class EstablishmentViewHolder extends RecyclerView.ViewHolder {
public ImageView ivIcon;
public TextView tvName;
public ImageView ivWorkingStatus;
public TextView tvOpeningTime;
public TextView tvClosingTime;
public TextView tvPlaceDistance;
public TextView tvType;
public byte idContractType;
public EstablishmentViewHolder(View itemView, byte idContractType {
super(itemView);
this.ivIcon = (ImageView) itemView.findViewById(R.id.iv_establishment_icon);
this.tvName = (TextView) itemView.findViewById(R.id.tv_establishment_name);
this.ivWorkingStatus = (ImageView) itemView.findViewById(R.id.iv_establishment_working_status_icon);
this.tvOpeningTime = (TextView) itemView.findViewById(R.id.tv_establishment_opening_time);
this.tvClosingTime = (TextView) itemView.findViewById(R.id.tv_establishment_closing_time);
this.tvPlaceDistance = (TextView) itemView.findViewById(R.id.tv_establishment_place_distance);
this.tvType = (TextView) itemView.findViewById(R.id.tv_establishment_type);
this.idContractType = idContractType;
}
}
最佳答案
问题在于您将 ImageView 的左侧与 TextView 的右侧对齐!!!
<RelativeLayout
android:layout_marginTop="@dimen/margin_vertical_small"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/tv_establishment_type"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="@dimen/font_size_tiny"
android:text="Pub / Bar"
android:textColor="@color/gray_60_percent"
>
</TextView>
<ImageView
android:id="@+id/iv_establishment_working_status_icon"
android:src="@drawable/img_dot_green"
android:layout_marginStart="@dimen/margin_horizontal_big"
android:layout_marginLeft="@dimen/margin_horizontal_big"
android:layout_toRightOf="@+id/tv_establishment_type"
android:layout_toEndOf="@+id/tv_establishment_type"
android:layout_width="17dp"
android:layout_height="17dp" />
</RelativeLayout>
随着文本的增长，您将看不到任何图像。尝试使用具有重力权的 Linearlayout 并将 textview 的权重设置为 1
关于android - RecyclerView适配器布局不显示图标，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36983937/