GridViewAdapter를 올바르게 작성하는 방법은 무엇입니까?

Question

6 개의 버튼으로 GridView를 만들려고했는데 버튼에 6 개의 다른 이름을 표시하고 싶었습니다. 여기 내 문자열입니다

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" android:layout_height="match_parent"> 

    <Button 
     android:id="@+id/button" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_centerHorizontal="true" 
     android:layout_centerVertical="true" 
     android:text="Button" /> 
</RelativeLayout> 

:

여기

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout 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.aaron.waller.girdlayoutmanagertest.MainActivity"> 


    <GridView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/gridView" 
     android:layout_alignParentTop="true" 
     android:layout_alignParentLeft="true" 
     android:numColumns="auto_fit" 
     android:horizontalSpacing="10dp" 
     android:verticalSpacing="10dp" 
     android:columnWidth="120dp" 
     android:stretchMode="spacingWidthUniform"/> 
</RelativeLayout> 

가 single_item.xml입니다 (이 경우에는 그냥 일반 버튼의) :

는 여기의 GridView 내 activity_main.xml입니다. 6 이름을 가진 XML :

<resources> 
    <string name="app_name">GirdLayoutManagerTest</string> 
    <string-array name="button_names"> 
     <item>Name1</item> 
     <item>Name2</item> 
     <item>Name3</item> 
     <item>Name4</item> 
     <item>Name5</item> 
     <item>Name6</item> 
    </string-array> 
</resources> 

그리고 마침내 내 MainActivity.java :

나는 버튼의 6 이름을 설정하는 방법 https://gyazo.com/1495d3f0c11e6eb0e903e79a68e7f2b0

:

import android.content.Context; 
import android.content.res.Resources; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.GridView; 

import java.util.ArrayList; 

public class MainActivity extends AppCompatActivity { 

    GridView gridView; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     gridView =(GridView)findViewById(R.id.gridView); 
     gridView.setAdapter(new GridAdapter(this)); 
    } 
} 
class ButtonNames{ 

    String buttonNames; 
    ButtonNames(String buttonNames){ 

     this.buttonNames = buttonNames; 
    } 
} 
class GridAdapter extends BaseAdapter{ 

    ArrayList<ButtonNames> list; 
    Context context; 
    GridAdapter(Context context){ 
     this.context = context; 
     list= new ArrayList<ButtonNames>(); 
     Resources res = context.getResources(); 
     String[] tempButtonNames = res.getStringArray(R.array.button_names); 
     for(int i = 0; i<6; i++){ 
      ButtonNames tempButton = new ButtonNames(tempButtonNames[i]); 
      list.add(tempButton); 
     } 

    } 
    @Override 
    public int getCount() { 
     return list.size(); 
    } 

    @Override 
    public Object getItem(int i) { 
     return list.get(i); 
    } 

    @Override 
    public long getItemId(int i) { 
     return i; 
    } 

    @Override 
    public View getView(int i, View view, ViewGroup viewGroup) { 
     View row = view; 
     if(row == null){ 
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      row = inflater.inflate(R.layout.single_item, viewGroup, false); 


     }else{ 
      row.getTag(); 
     } 

     return row; 
    } 
} 

난 그냥이 출력을 받고 있어요?

P.S Android Studio를 처음 사용했습니다.

Answer 1

업데이트 GridAdapter의 당신의 getView() 메소드 :

@Override 
public View getView(int i, View view, ViewGroup viewGroup) { 
    View row = view; 
    if(row == null){ 
     LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     row = inflater.inflate(R.layout.single_item, viewGroup, false); 

     //ADD THESE LINES 
     Button btn = (Button) row.findViewById(R.id.button); 
     btn.setText(list.get(i)); 

    }else{ 
     row.getTag(); 
    } 

    return row; 
} 

Answer 2

왜 Gridview.Android 당신이 recyclerview과 연락이이 feature.If와 Recyclerview를 제공하고 사용하려면, 그냥 대신 GridLayoutManager를 설정해야 LinearLayoutManager의 메소드

GridLayoutManager lLayout = new GridLayoutManager (this, 2); yourRecyclerView.setLayoutManager (lLayout);

나머지는 Recyclerview 어댑터에서 데이터를 설정 한 것과 동일합니다.

activity_main.xml을 this로 변경하십시오.

<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/recyclerView" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content"/> 

MainActivity.java를 이와 같이 수정하십시오.

공용 클래스 MainActivity는

compile 'com.android.support:recyclerview-v7:25.3.0' 

이 문제가 해결 희망 build.gradle에 AppCompatActivity {

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main1); 
    initComponents(); 
} 


private void initComponents() { 
    RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView); 
    recyclerView.setLayoutManager(new GridLayoutManager(this, 2)); 
    recyclerView.setAdapter(new GridAdapter(this)); 
} 

class GridAdapter extends RecyclerView.Adapter<GridAdapter.ViewHolder> { 

    private final LayoutInflater layoutInflater; 
    String[] tempButtonNames; 
    Context context; 

    GridAdapter(Context activity) { 
     context = activity; 
     Resources res = context.getResources(); 
     tempButtonNames = res.getStringArray(R.array.button_names); 
     layoutInflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 

    @Override 
    public GridAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     return new GridAdapter.ViewHolder(layoutInflater.inflate(R.layout.item, null)); 
    } 

    @Override 
    public void onBindViewHolder(final GridAdapter.ViewHolder viewHolder, final int position) { 
     viewHolder.button.setText(tempButtonNames[position]); 
    } 

    @Override 
    public long getItemId(int position) { 
     return position; 
    } 

    @Override 
    public int getItemCount() { 
     return tempButtonNames.length; 
    } 

    class ViewHolder extends RecyclerView.ViewHolder { 

     Button button; 

     ViewHolder(View itemView) { 
      super(itemView); 
      button = (Button) itemView.findViewById(R.id.button); 
     } 
    } 
} 

}

추가이 확장됩니다.

권장 사항이므로 RecyclerView를 사용하는 것이 좋습니다.