RecyclerView项的高度和宽度会动态更改Android [英] RecyclerView item height and width change dynamically Android

问题描述

我是android开发的新手，我正在开发一个应用程序，其中该应用程序从服务器下载图片并将其显示在gridView中.但是，当应用程序在更大屏幕的手机上运行时，还会出现一些额外的空间.这是一些屏幕截图.我该如何解决?我有每个项目的模型，高度和宽度固定为110dp

I am new to android development and I am developing an app where the app downloads pictures from server and show them in a gridView. But some extra spaces are coming up when the app is run on a bigger screen phone. Here are some screenshots. How do I solve this ? I have the model of each item with a fixed height and width of 110dp

我的图像模型:

<?xml version="1.0" encoding="utf-8"?>
<ImageView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="110dp"
    android:layout_height="110dp"
    app:srcCompat="@drawable/post2"
    android:id="@+id/imageView2"
    android:adjustViewBounds="true"
    android:scaleType="centerCrop"
    android:layout_margin="1.5dp" />

我的回收者视图:

<android.support.v7.widget.RecyclerView
                android:id="@+id/gallerygrid"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginTop="4dp"
                android:numColumns="auto_fit"
                android:stretchMode="columnWidth"
                android:visibility="visible"
                android:layout_gravity="center">

            </android.support.v7.widget.RecyclerView>

推荐答案

根据屏幕尺寸动态设置高度和宽度.这是获得完美结果的最佳方法.

Set height and width dynamically according to the screen size. this is the best way to get perfect result.

DisplayMetrics displaymetrics = new DisplayMetrics();
        ((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
        //if you need three fix imageview in width
        int devicewidth = displaymetrics.widthPixels / 3;

        //if you need 4-5-6 anything fix imageview in height
        int deviceheight = displaymetrics.heightPixels / 4;

        holder.image_view.getLayoutParams().width = devicewidth;

        //if you need same height as width you can set devicewidth in holder.image_view.getLayoutParams().height
        holder.image_view.getLayoutParams().height = deviceheight;

在适配器中的getview中尝试此操作，希望您在所有设备上都能获得更好的结果

try this in adapter in getview hope you get better result in all device

或设置与宽度相同的高度，您也可以如下设置高度的设备宽度:

Or to set same height same as width you can set devicewidth in height also like below:

holder.image_view.getLayoutParams().height = devicewidth;

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