我有一个RecyclerView必须CardView显示项目。这些项目包含图像视图，并且TextView
一旦用户选择一个项目就会被填充。一旦他们选择了一个项目，我就会检索所选项目的背景并触发打开一个新活动的意图，在该活动中我动态创建一个布局并将所选项目的背景设置为布局的背景。这是我的适配器类，它将填充我RecyclerView检索所选项目背景的位置。
public class PersonsAdapter extends RecyclerView.Adapter<PersonsAdapter.MyViewHolder> {
private List<Person> mpersonsList;
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView name .....;
View v;
Person p;
public MyViewHolder(View view) {
super(view);
name = (TextView) view.findViewById(R.id.tvName);
//and all other textviews....
v = view;
v.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//if (view.getId() == getAdapterPosition()) {
//int itemposition = mRecyclerView.indexOfChild(v);
Intent i = new Intent(context, SelectedTemplate.class);
startActivity(i);
theBackground = view.getBackground();//retrieve the background of the selected item
//}
}
});
List<Drawable> templatesList = new ArrayList<>();
}
}
public PersonsAdapter(List<Person> personsList) {
this.mpersonsList = personsList;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.person, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
Person person = mpersonsList.get(position);
holder.name.setText(person.getName());
//and other details of the item......
holder.p = mpersonsList.get(position);
if(position == 0){
holder.v.setBackgroundResource(R.drawable.wavy_curves_onblack);
}
//and other background images.....
}
@Override
public int getItemCount() {
return mpersonsList.size();
}
}
在下一个活动中，我按如下方式检索所选项目。
private void getSelectedTemplate() {
LayoutInflater vi = (LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = vi.inflate(R.layout.selected_template, null);
// fill in any details dynamically here
//insert into main view
ViewGroup insertPoint = (ViewGroup) findViewById(R.id.selectedtemplatelayout);
insertPoint.setBackground(TheTemplates.theBackground);
insertPoint.addView(v, 0, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
rl = (LinearLayout) findViewById(R.id.selectedtemplatelayout);
image.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
image.getLayoutParams().height = (int) getResources().getDimension(R.dimen.image_height);
image.getLayoutParams().width = (int) getResources().getDimension(R.dimen.image_width);
name.setText("NAME");
name.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
//add all other textviews dynamically.....
rl.removeAllViews();
rl.addView(image);
rl.addView(name);
//add all remaining textviews
}
当我在模拟器或小于 5.5 英寸的设备中测试它时，我看到非常大的背景（我可以永远滚动），我只能看到两个图像，但看不到文本视图。在较大的设备（真实和模拟器）中，我得到了正确大小的背景。但我看不到文本视图，就像较小的设备一样。虽然我看到了这两个图像。
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:focusable="true"
android:focusableInTouchMode="true"><!--this two lines will hide the keyboard and make the NAME textview visible -->
<android.support.v7.widget.Toolbar
android:id="@+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="@+id/selectedtemplatelayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="4dp"
android:orientation="vertical" >
//this is the layout I would like to stuff all my textviews and images and //set the background of the selected item.
</LinearLayout>
</ScrollView>
//another layout
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</ScrollView>
</LinearLayout>
这是RecyclerView
<?xml version="1.0" encoding="utf-8"?>
<!--<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">-->
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/templateList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
/>
<!--</LinearLayout>-->
我似乎无法弄清楚为什么会发生这种情况以及如何解决它。任何帮助表示赞赏。