Transfrom（）或重寫（）或centerCrop（）現在滑翔機器人工作

Question

這個程序目前正在完美地取出並顯示圖像，但是當我嘗試添加其他方法在ImageListAdapter類滑翔像override()或centerCrop()或transform()或placeholder()，它不起作用。我的意思是它甚至沒有讓我添加這些，它顯示爲紅色，沒有類似的建議，但許多教程建議使用這些方法來修改大小，爲什麼它不起作用。難道我做錯了什麼？謝謝。

MainActivity.java

package com.example.imnobody.photosearch; 

import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.widget.GridView; 
import android.widget.ListView; 

import java.util.ArrayList; 

public class MainActivity extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     String[] eatFoodyImages = { 
       "http://i.imgur.com/rFLNqWI.jpg", 
       "http://i.imgur.com/C9pBVt7.jpg", 
       "http://i.imgur.com/rT5vXE1.jpg", 
       "http://i.imgur.com/aIy5R2k.jpg", 
       "http://i.imgur.com/MoJs9pT.jpg", 
       "http://i.imgur.com/S963yEM.jpg", 
       "http://i.imgur.com/rLR2cyc.jpg", 
       "http://i.imgur.com/SEPdUIx.jpg", 
       "http://i.imgur.com/aC9OjaM.jpg", 
       "http://i.imgur.com/76Jfv9b.jpg", 
       "http://i.imgur.com/fUX7EIB.jpg", 
       "http://i.imgur.com/syELajx.jpg", 
       "http://i.imgur.com/COzBnru.jpg", 
       "http://i.imgur.com/Z3QjilA.jpg", 
     }; 

     GridView gridView = (GridView) findViewById(R.id.gridview); 

     ImageListAdapter imageListAdapter = new ImageListAdapter(MainActivity.this,eatFoodyImages); 

     gridView.setAdapter(imageListAdapter); 

    } 
} 

ImageListAdapter.java

package com.example.imnobody.photosearch; 

import android.content.Context; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.ImageView; 

import com.bumptech.glide.Glide; 

import java.util.ArrayList; 

/** 
* Created by imnobody on 5/8/17. 
*/ 

public class ImageListAdapter extends ArrayAdapter{ 
     private Context context; 
     private LayoutInflater inflater; 

     private String[] imageUrls; 

     public ImageListAdapter(Context context, String[] imageUrls) { 
      super(context, R.layout.image_main, imageUrls); 

      this.context = context; 
      this.imageUrls = imageUrls; 

      inflater = LayoutInflater.from(context); 
     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      if (null == convertView) { 
       convertView = inflater.inflate(R.layout.image_main, parent, false); 
      } 

      Glide 
        .with(context) 
        .load(imageUrls[position]) 
        .into((ImageView) convertView); 

      return convertView; 
     } 
    } 

activitymain.xml

<?xml version="1.0" encoding="utf-8"?> 
<android.support.constraint.ConstraintLayout 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="match_parent" 
    android:layout_height="match_parent" 
    tools:context="com.example.imnobody.photosearch.MainActivity"> 

<GridView 
    android:layout_width="368dp" 
    android:layout_height="495dp" 
    android:id="@+id/gridview" 
    android:numColumns="auto_fit" 
    android:columnWidth="90dp" 
    android:horizontalSpacing="4dp" 
    android:verticalSpacing="4dp" 
    android:gravity="center" 
    android:stretchMode="columnWidth" 
    app:layout_constraintTop_toTopOf="parent" 
    android:layout_marginTop="8dp" 
    android:layout_marginRight="8dp" 
    app:layout_constraintRight_toRightOf="parent" 
    app:layout_constraintBottom_toBottomOf="parent" 
    android:layout_marginBottom="8dp" 
    android:layout_marginLeft="8dp"> 
</GridView> 


</android.support.constraint.ConstraintLayout> 

image_main.xml

<?xml version="1.0" encoding="utf-8"?> 
    <ImageView 
    xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="match_parent" 
     android:layout_height="200dp" 
     android:id="@+id/imagemain"/> 

Answer 1

是否使用滑翔V4？如果是這樣，請參閱http://bumptech.github.io/glide/doc/options.html#requestoptions。