Android RecyclerView未在RelativeLayout和ScrollView中展开
我为android创建了一个移动应用程序，在该页面上显示回收者视图和幻灯片。我在recyclerview之前抛出scroll视图，但它需要relativelayout，因为scroll视图中有多个组件 这是我的源代码：Android RecyclerView未在RelativeLayout和ScrollView中展开,android,android-layout,Android,Android Layout,我为android创建了一个移动应用程序，在该页面上显示回收者视图和幻灯片。我在recyclerview之前抛出scroll视图，但它需要relativelayout，因为scroll视图中有多个组件 这是我的源代码： <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:custom="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"
android:layout_height="fill_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:background="#eeeeee"
app:layout_behavior="@string/appbar_scrolling_view_behavior" tools:showIn="@layout/app_bar_main"
tools:context=".MainActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="fill_parent">
<com.daimajia.slider.library.SliderLayout
android:id="@+id/slider"
android:layout_width="match_parent"
custom:pager_animation="Accordion"
custom:auto_cycle="true"
custom:indicator_visibility="visible"
custom:pager_animation_span="1100"
android:layout_height="200dp"/>
<com.daimajia.slider.library.Indicators.PagerIndicator
android:id="@+id/custom_indicator"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
custom:selected_color="#0095BF"
custom:unselected_color="#55333333"
custom:selected_drawable="@drawable/banner1"
custom:shape="oval"
custom:selected_padding_left="5dp"
custom:selected_padding_right="5dp"
custom:unselected_padding_left="5dp"
custom:unselected_padding_right="5dp"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
custom:selected_width="6dp"
custom:selected_height="6dp"
custom:unselected_width="6dp"
custom:unselected_height="6dp"
android:layout_marginBottom="20dp"
/>
<com.daimajia.slider.library.Indicators.PagerIndicator
android:id="@+id/custom_indicator2"
style="@style/AndroidImageSlider_Corner_Oval_Orange"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
android:layout_marginBottom="20dp"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Produk Terbaru"
android:id="@+id/judul"
android:layout_marginBottom="15dp"
android:layout_marginTop="15dp"
android:layout_below="@id/slider"/>
<view
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/judul"
class="android.support.v7.widget.RecyclerView"
android:id="@+id/recycler_view" />
<ProgressBar
android:id="@+id/progress_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
</RelativeLayout>
</ScrollView>
</RelativeLayout>
但是，在添加RelativeLayout后，RecyclerView没有展开 只需使用此Layoutmanager：
import android.content.Context;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import com.apkfuns.logutils.LogUtils;
public class MainActivity{
onCreate(){
recyclerview.setLayoutManager(new FullyLinearLayoutManager(MainActivity.this))
}
public class FullyLinearLayoutManager extends LinearLayoutManager {
private static final String TAG = FullyLinearLayoutManager.class.getSimpleName();
private MeasureEndListener mMeasureEndListener;
public FullyLinearLayoutManager(Context context) {
super(context);
}
private float divHeight =0;
public FullyLinearLayoutManager(Context context,float height) {
super(context);
divHeight = height;
}
public FullyLinearLayoutManager(Context context, int orientation, boolean reverseLayout) {
super(context, orientation, reverseLayout);
}
private int[] mMeasuredDimension = new int[2];
@Override
public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,
int widthSpec, int heightSpec) {
final int widthMode = View.MeasureSpec.getMode(widthSpec);
final int heightMode = View.MeasureSpec.getMode(heightSpec);
final int widthSize = View.MeasureSpec.getSize(widthSpec);
final int heightSize = View.MeasureSpec.getSize(heightSpec);
Log.i(TAG, "onMeasure called. \nwidthMode " + widthMode
+ " \nheightMode " + heightSpec
+ " \nwidthSize " + widthSize
+ " \nheightSize " + heightSize
+ " \ngetItemCount() " + getItemCount());
int width = 0;
int height = 0;
for (int i = 0; i < getItemCount(); i++) {
measureScrapChild(recycler, i,
View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),
View.MeasureSpec.makeMeasureSpec(i, View.MeasureSpec.UNSPECIFIED),
mMeasuredDimension);
if (getOrientation() == HORIZONTAL) {
width = width + mMeasuredDimension[0];
if (i == 0) {
height = mMeasuredDimension[1];
}
} else {
// LogUtils.e(mMeasuredDimension[1]);
height = height + mMeasuredDimension[1];
if(i!= getItemCount()-1){
height += divHeight;
// LogUtils.e(divHeight + "xxx add"+DensityUtils.dp2px(divHeight));
}else{
height += 2*divHeight;
// LogUtils.e(divHeight+ "xxx no add"+ DensityUtils.dp2px(divHeight));
}
if (i == 0) {
width = mMeasuredDimension[0];
}
}
}
switch (widthMode) {
case View.MeasureSpec.EXACTLY:
width = widthSize;
case View.MeasureSpec.AT_MOST:
case View.MeasureSpec.UNSPECIFIED:
}
switch (heightMode) {
case View.MeasureSpec.EXACTLY:
height = heightSize;
case View.MeasureSpec.AT_MOST:
case View.MeasureSpec.UNSPECIFIED:
}
if(mMeasureEndListener!=null){
mMeasureEndListener.onMeasureEnd(width,height);
// new Thread().interrupt();
}
setMeasuredDimension(width, height);
}
private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,
int heightSpec, int[] measuredDimension) {
try {
View view = recycler.getViewForPosition(0);//fix 动态添加时报IndexOutOfBoundsException
if (view != null) {
RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();
int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec,
getPaddingLeft() + getPaddingRight(), p.width);
int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,
getPaddingTop() + getPaddingBottom(), p.height);
view.measure(childWidthSpec, childHeightSpec);
measuredDimension[0] = view.getMeasuredWidth() + p.leftMargin + p.rightMargin;
measuredDimension[1] = view.getMeasuredHeight() + p.bottomMargin + p.topMargin;
recycler.recycleView(view);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
}
}
public interface MeasureEndListener{
void onMeasureEnd(int width,int height);
}
public void setMeasureEndListener(MeasureEndListener mMeasureEndListener){
this.mMeasureEndListener = mMeasureEndListener;
}
}
}
导入android.content.Context；
导入android.support.v7.widget.LinearLayoutManager；
导入android.support.v7.widget.RecyclerView；
导入android.util.Log；
导入android.view.view；
导入android.view.ViewGroup；
导入com.apkfuns.logutils.logutils；
公开课活动{
onCreate（）{
setLayoutManager（新的FullyLinearLayoutManager（MainActivity.this））
}
公共类FullyLinearLayoutManager扩展了LinearLayoutManager{
私有静态最终字符串标记=FullyLinearLayoutManager.class.getSimpleName（）；
私有度量列表器；
公共FullyLinearLayoutManager（上下文）{
超级（上下文）；
}
专用浮点数高度=0；
公共FullyLinearLayoutManager（上下文、浮动高度）{
超级（上下文）；
高度=高度；
}
公共FullyLinearLayoutManager（上下文上下文、int方向、布尔反转）{
超级（上下文、方向、反转）；
}
私有int[]mMeasuredDimension=新int[2]；
@凌驾
测量时的公共空隙（RecyclerView.Recycler Recycler，RecyclerView.State，
整数宽度规格、整数高度规格）{
最终int-widthMode=View.MeasureSpec.getMode（widthmspec）；
最终int heightMode=View.MeasureSpec.getMode（heightSpec）；
最终int-widthSize=View.MeasureSpec.getSize（widthSpec）；
最终int heightSize=View.MeasureSpec.getSize（heightSpec）；
Log.i（标记“onMeasure called.\nwidthMode”+widthMode
+“\n高度模式”+高度规格
+“\n宽度大小”+宽度大小
+“\n高度大小”+高度大小
+“\ngetItemCount（）”+getItemCount（））；
整数宽度=0；
整数高度=0；
对于（int i=0；i