Recyclerview项在与父项匹配时并不会占用屏幕的所有宽度 [英] Recyclerview item doesn't take all width of the screen while giving it match parent
本文介绍了Recyclerview项在与父项匹配时并不会占用屏幕的所有宽度的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
这是我的问题，同时对它显示的评论进行新的recyclerview，如下图所示
here is my problem while make a new recyclerview of reviews it shows as below not take all width
我的活动
public class ReviewsActivity extends AppCompatActivity {
private ArrayList<Review> reviews;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_reviews);
reviews = new Gson().fromJson(getIntent().getStringExtra("reviews"), new
TypeToken<List<Review>>() {
}.getType());
setUpReviewsList();
}
void setUpReviewsList() {
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rvReviews);
ReviewsRvAdapter mAdapter = new ReviewsRvAdapter(this, reviews, true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(mAdapter);
}
}
我的适配器
public class ReviewsRvAdapter extends RecyclerView.Adapter<ReviewsRvHolder>
{
private ArrayList<Review> reviews;
private Context context;
ReviewsRvHolder holder;
private DatabaseReference mDatabase;
boolean isActivity = false;
// Provide a suitable constructor (depends on the kind of dataset)
public ReviewsRvAdapter(Context context, ArrayList<Review> reviews) {
this.reviews = reviews;
this.context = context;
mDatabase = FirebaseDatabase.getInstance().getReference();
}
public ReviewsRvAdapter(Context context, ArrayList<Review> reviews, boolean isActivity) {
this.reviews = reviews;
this.context = context;
mDatabase = FirebaseDatabase.getInstance().getReference();
this.isActivity = isActivity;
}
/**
* Create new views (invoked by the layout manager)
*
* @param parent
* @param viewType
* @return
*/
@Override
public ReviewsRvHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
View layoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_item_user_review, null);
// View layoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.layout_review_summary, null);
return new ReviewsRvHolder(layoutView);
}
/**
* Replace the contents of a view (invoked by the layout manager)
*
* @param holder
* @param position
*/
@Override
public void onBindViewHolder(ReviewsRvHolder holder, int position) {
final int tempPos = position;
this.holder = holder;
Review review = reviews.get(position);
try {
holder.txtReviewDate.setReferenceTime(Long.parseLong(review.getDate()));
} catch (Exception e) {
e.printStackTrace();
}
if (review.getUser() != null) {
holder.txtUserReviewNum.setText(String.format("%s%s",
String.valueOf(review.getUser().getNumOfReviews()),
context.getString(R.string.txt_reviews)));
if (review.getUser().getUserName() != null)
holder.txtReviewerName.setText(review.getUser().getUserName());
}
holder.txtLikesNum.setText(String.valueOf(review.getLikesNum()));
holder.rbReviewerRate.setRating((float) review.getRating());
holder.exTxtUserReview.setText(review.getReview());
holder.imgBtnMenu.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//ReviewOtherPopUp(tempPos);
}
});
}
// Return the size of your dataset (invoked by the layout manager)
@Override
public int getItemCount() {
if (isActivity) {
return reviews.size();
}
//return the smallest number between 3 and list size
return (3 > reviews.size() ? reviews.size() : 3);
}
}
这是activity_reviews.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context="com.better.sftani.ReviewsActivity">
<android.support.v7.widget.RecyclerView
android:id="@+id/rvReviews"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</RelativeLayout>
和list_item_user_review.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:elevation="2dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="4dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp">
<ImageView
android:id="@+id/imgProfile"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_gravity="center_vertical"
android:background="@color/black"
android:padding="8dp"/>
<LinearLayout
android:id="@+id/reviewer_linearlayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/imgProfile"
android:gravity="center_vertical"
android:orientation="vertical"
android:paddingLeft="16dp">
<TextView
android:id="@+id/txtReviewerName"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:text="Mohamed Abd El-Sattar"
android:textColor="@color/black"/>
<TextView
android:id="@+id/txtUserReviewNum"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:text="@string/txt_reviews"/>
</LinearLayout>
<ImageButton
android:id="@+id/imgBtnMenu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toEndOf="@id/reviewer_linearlayout"
android:layout_toRightOf="@id/reviewer_linearlayout"
android:background="@null"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:src="@drawable/ic_dots"/>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="55dp"
>
<RatingBar
android:id="@+id/rbReviewerRate"
style="@style/Base.Widget.AppCompat.RatingBar.Small"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:isIndicator="true"
android:stepSize="1"/>
<com.github.curioustechizen.ago.RelativeTimeTextView
android:id="@+id/txtReviewDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:paddingBottom="4dp"
android:paddingTop="4dp"
android:text="-"
app:relative_time_prefix="Completed "/>
</LinearLayout>
<com.better.sftani.Helpers.ExpandableTextView
android:id="@+id/exTxtUserReview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="16dp"
android:paddingRight="16dp"
/>
<LinearLayout
android:layout_width="121dp"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="48dp">
<ImageButton
android:id="@+id/imgBtnLikeReview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="?selectableItemBackground"
android:gravity="center_vertical"
android:src="@drawable/ic_like"
/>
<TextView
android:id="@+id/txtLikesNum"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="4dp"
android:text="0"/>
</LinearLayout>
</LinearLayout>
我做了很多尝试，以使所有布局都与父项匹配，并且仍然如上图所示，我搜索了我看到的问题 它指定了特定宽度
i tried a lot to make all of the layouts match parent and it still as it appears above and i search about the problem i saw this it gives it specific width
推荐答案
在您的ReviewsRvAdapter类中，在onCreateViewHolder()方法内部，您具有以下代码行:
In your ReviewsRvAdapter class, inside the onCreateViewHolder() method, you have this line of code:
View layoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_item_user_review, null);
现在，在放大视图时，您将null作为父级传递.这使得创建的视图无法匹配父级"宽度.
Right now, you're passing null as the parent when inflating the view. This makes it impossible for the created view to "match parent" for the width.
改为以下:
View layoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_item_user_review, parent, false);
现在，当您为视图充气时，您将有一个非null的父级，因此宽度将被正确设置.
Now you will have a non-null parent when you inflate the view, and so the width will be set correctly.
这篇关于Recyclerview项在与父项匹配时并不会占用屏幕的所有宽度的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
