如何删除添加到膨胀的 LinearLayout 的视图之间不需要的空间？

Question

我正在开发一个 Android 应用程序，以在具有两列的可滚动视图中显示一些电影。

一切都很好，只是行之间的空间很大。

我尝试了很多在 StackOverflow 中发现的东西，例如：android:adjustViewBounds="true"、将填充设置为零等。

谁能赐教？

Here is how the app is looking like

As you can see there is a huge space between rows

我正在通过 inflate 动态添加 imageViews，我认为这就是问题所在。

这是我的代码：

package com.example.androidvidly

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.widget.ImageView
import android.widget.LinearLayout
import android.widget.TextView
import com.android.volley.Request
import com.android.volley.Response
import com.android.volley.toolbox.StringRequest
import com.android.volley.toolbox.Volley
import com.google.gson.Gson
import com.google.gson.reflect.TypeToken
import com.squareup.picasso.Picasso
import org.json.JSONArray
import org.json.JSONObject

const val MOVIE_OBJECT_ID = "tokenlab.com.MOVIE_OBJECT_ID"
const val MOVIE_OBJECT_VOTES = "tokenlab.com.MOVIE_OBJECT_VOTES"
const val MOVIE_OBJECT_TITLE = "tokenlab.com.MOVIE_OBJECT_TITLE"
const val MOVIE_OBJECT_POSTER_URL = "tokenlab.com.MOVIE_OBJECT_POSTER_URL"
const val MOVIE_OBJECT_RELEASE_DATE = "tokenlab.com.MOVIE_OBJECT_RELEASE_DATE"
const val MOVIE_OBJECT_GENRES = "tokenlab.com.MOVIE_OBJECT_GENRES"

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val mQueue = Volley.newRequestQueue(this)
        val url = "https://desafio-mobile.nyc3.digitaloceanspaces.com/movies" //API provided
        //val url = "http://10.0.2.2:3000"// Node.js Backend
        val gallery = findViewById<LinearLayout>(R.id.gallery)
        val inflater = LayoutInflater.from(this)
        var mAppName = findViewById<TextView>(R.id.appName)
        mAppName.text="Vidly"
        val gson = Gson()
        var request = StringRequest(Request.Method.GET, url, Response.Listener { response ->
            var moviesJSONArray = JSONArray(response)
            for (i in 0 until moviesJSONArray.length()) {
                var e : JSONObject = moviesJSONArray.getJSONObject(i)
                //Initializing the object
                val arrayStringType = object : TypeToken<ArrayList<String>>() {}.type
                var genreListAux:ArrayList<String> = gson.fromJson(e.getString("genres"), arrayStringType)
                var movieObject: Movie = Movie(e.getString("id").toInt(), e.getString("vote_average").toDouble(), e.getString("title"), e.getString("poster_url"), genreListAux, e.getString("release_date"))
                if (i==0) {
                    var mImageView = findViewById<ImageView>(R.id.imageDisplay)
                    mImageView.setTag(movieObject)
                    loadImageFromUrl(movieObject.poster_url, mImageView)
                    mImageView.setPadding(0, 0, 0, 0);
                }
                else if (i==1) {
                    var mImageView = findViewById<ImageView>(R.id.imageDisplay2)
                    mImageView.setTag(movieObject)
                    loadImageFromUrl(movieObject.poster_url, mImageView)
                    mImageView.setPadding(0, 0, 0, 0);
                }
                else{
                    if(i.rem(2)==0) {
                        var view = inflater.inflate(R.layout.activity_main, gallery, false)
                        var mImageView = view.findViewById<ImageView>(R.id.imageDisplay)
                        mImageView.setTag(movieObject)
                        var height = gallery.height
                        view.minimumHeight=height
                        gallery.addView(view)
                        loadImageFromUrl(movieObject.poster_url, mImageView)
                        mImageView.setPadding(0, 0, 0, 0);
                    }
                    else {
                        var view = gallery.getChildAt(gallery.childCount-1)
                        var mImageView = view.findViewById<ImageView>(R.id.imageDisplay2)
                        mImageView.setTag(movieObject)
                        loadImageFromUrl(movieObject.poster_url, mImageView)
                        mImageView.setPadding(0, 0, 0, 0);
                    }
                }

            }

        }, Response.ErrorListener { error ->
            error.printStackTrace()
        })
        mQueue.add(request)
    }

    fun showMore(view: View) {
        val intent = Intent(this, MovieSelectedActivity::class.java).apply {
            var movieObj : Movie = view.getTag() as Movie
            putExtra(MOVIE_OBJECT_ID, movieObj.id)
            putExtra(MOVIE_OBJECT_GENRES, movieObj.genres)
            putExtra(MOVIE_OBJECT_POSTER_URL, movieObj.poster_url)
            putExtra(MOVIE_OBJECT_RELEASE_DATE, movieObj.release_date)
            putExtra(MOVIE_OBJECT_TITLE, movieObj.title)
            putExtra(MOVIE_OBJECT_VOTES, movieObj.vote_average)
        }
        startActivity(intent)
    }
    fun loadImageFromUrl(url: String, mImageView: ImageView) {
        Picasso.with(this).load(url).placeholder(R.mipmap.ic_launcher)
            .error(R.mipmap.ic_launcher)
            .into(
                mImageView, null
            )
    }
}

这是视图的 xml：

    <?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    tools:context=".MainActivity">

    <LinearLayout
        android:id="@+id/gallery"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/background"
        android:orientation="vertical"
        android:weightSum="10"
        android:adjustViewBounds="true">

        <RelativeLayout
            android:layout_weight="2"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:adjustViewBounds="true">


            <TextView
                android:id="@+id/appName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                android:textAppearance="@style/TextAppearance.AppCompat.Body2"
                android:textColor="#000000"
                android:textSize="60dp"
                android:adjustViewBounds="true"/>
        </RelativeLayout>
        <RelativeLayout
            android:layout_weight="8"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:adjustViewBounds="true">
                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_weight="1"
                    android:layout_alignParentLeft="true"
                    android:adjustViewBounds="true">

                    <ImageView
                        android:id="@+id/imageDisplay"
                        android:layout_width="170dp"
                        android:layout_height="280dp"
                        android:clickable="true"
                        android:onClick="showMore"
                        android:adjustViewBounds="true"/>
                </LinearLayout>

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_weight="1"
                    android:layout_alignParentRight="true"
                    android:adjustViewBounds="true">

                    <ImageView
                        android:id="@+id/imageDisplay2"
                        android:layout_width="170dp"
                        android:layout_height="280dp"
                        android:clickable="true"
                        android:onClick="showMore"
                        android:adjustViewBounds="true"/>
                </LinearLayout>

        </RelativeLayout>

    </LinearLayout>




</ScrollView>

Answer 1

我发现问题在于我在主线性布局中设置的背景。删除后，巨大的空间消失了。

android:background="@drawable/background"