java - 如何删除添加到膨胀的 LinearLayout 的 View 之间不需要的空格？

Question

我正在开发一个 Android 应用程序，以在两列的可 ScrollView 中显示一些电影。

一切都很好，除了行之间有很大的空间。

我尝试了在 StackOverflow 中找到的许多方法，例如:android:adjustViewBounds="true"、将填充设置为零等。

谁能赐教一下吗？

Here is how the app is looking like

As you can see there is a huge space between rows

我通过 inflate 动态添加 imageView，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 View 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

我发现问题出在我在主线性布局中设置的背景。移除后，巨大的空间消失了。

android:background="@drawable/background"