仅显示第一项的RecycleView
仅显示第一项的RecycleView
提问于 2016-03-10 10:46:09
问题是:我创建了世界上最简单的RecyclerView，但它只显示第一项。我不明白原因何在。谢谢你的帮助。
item_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/tv_detail"/>
</RelativeLayout>activity_main.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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.bcit.moonlady.testrecycler.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:id="@+id/tv_hello"/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="300dp"
android:id="@+id/rv_details"
android:layout_below="@+id/tv_hello"/>
</RelativeLayout>MainActivity.java
package com.bcit.moonlady.testrecycler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
String[] data = {"test1", "test2", "test3"};
RecyclerView mRecView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecView = (RecyclerView)findViewById(R.id.rv_details);
mRecView.setHasFixedSize(true);
mRecView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
mRecView.setAdapter(new DetailAdapter());
}
private class DetailView extends RecyclerView.ViewHolder {
TextView mTextView;
public DetailView(View itemView) {
super(itemView);
mTextView = (TextView)itemView.findViewById(R.id.tv_detail);
}
public void bindView(String string) {
mTextView.setText(string);
}
}
private class DetailAdapter extends RecyclerView.Adapter<DetailView> {
@Override
public DetailView onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View v = layoutInflater.inflate(R.layout.item_layout, parent, false);
return new DetailView(v);
}
@Override
public void onBindViewHolder(DetailView holder, int position) {
String string = data[position];
holder.bindView(string);
}
@Override
public int getItemCount() {
return data.length;
}
}
}回答 7
Stack Overflow用户
回答已采纳
发布于 2016-03-10 12:35:38
如果使用的是Android Support Library v 23.2.0及更高版本，则需要将item_layout高度更改为wrap_content
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/tv_detail"/>
</RelativeLayout>Stack Overflow用户
发布于 2017-01-31 03:07:17
我也犯了这个常见的错误。只需更改父高度- LinearLayout应为"wrap_content“
<LinearLayout
android:layout_width="match_parent"
android:layout_height = "wrap_content"
..... >
..
..
</LinearLayout>Stack Overflow用户
发布于 2017-07-18 13:02:57
将item_layout.xml中RelativeLayout的高度设置为wrap_content。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/tv_detail"/>
</RelativeLayout>页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/35906652
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