以編程方式在TextView旁邊添加按鈕

Question

我有一個ListView的國家的TextViews，我做了一個OptionsMenu項目後點擊一個TextViews短按它將刪除按下的textview。 我想知道是否有辦法做到這一點，當我按項目「Delete國家」 在iphone例如

ListView控件通過適配器創造未來的每一個TextView的像一個按鈕就會出現。 我不需要整個答案只是它怎麼做的概念（刪除按鈕，在您從Options菜單中選擇刪除國家後，在每個TextView旁邊創建）。

public class CountryAdapter extends BaseAdapter { 



private Context mContext; 
protected Vector<Country> mVector; 
protected SQLiteDatabase mDb; 

public void setmContext(Context mContext){ 
    this.mContext = mContext; 
} 


public CountryAdapter(Context mContext){ 
    this.mContext = mContext; 

    mVector = new Vector<Country>(); 

    CountryOpenHelper helper = new CountryOpenHelper(mContext); 
    mDb = helper.getWritableDatabase(); 


    Cursor cursor = mDb.rawQuery("SELECT * FROM COUNTRIES", null); 

    if(cursor.getCount() > 0){ 

     cursor.moveToFirst(); 
    } 
    do { 
     Country country = new Country(); 
     country.setmCountryIndex(cursor.getInt(0)); 
     country.setmCountryName(cursor.getString(2)); 
     country.setmCountryTextSize(cursor.getInt(1)); 
     country.setmCountryColor(cursor.getInt(3)); 
     mVector.add(country); 

    } while (cursor.moveToNext()); 




} 


public Vector<Country> getmVector() { 
    return mVector; 
} 


@Override 
public int getCount() { 
    // TODO Auto-generated method stub 
    return mVector.size(); 
} 

@Override 
public Object getItem(int position) { 
    // TODO Auto-generated method stub 
    return null; 
} 

@Override 
public long getItemId(int position) { 
    // TODO Auto-generated method stub 
    return 0; 
} 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    TextView tv; 
    if(convertView == null){ 
     tv = new TextView(mContext); 
    }else{ 
     tv = (TextView) convertView; 
    } 

    tv.setText(mVector.get(position).getmCountryName()); 
    tv.setTextColor(mVector.get(position).getmCountryColor()); 
    tv.setTextSize(mVector.get(position).getmCountryTextSize()); 



    return tv; 
} 
public void ChangeColor(int newcolor, String name) { 

    mDb.execSQL("update COUNTRIES set color = " + newcolor + " where name = '" + name + "' "); 




} 
public void addCountry(int mId, String myCountry, int myColorNum){ 
    mDb.execSQL("insert into countries values(" + mId + " , ' " + myCountry+"' , "+ myColorNum + ")"); 
} 

public void delete(int position) { 
    int mDeletedId = mVector.get(position).getmCountryIndex(); 
    mVector.remove(position); 
    mDb.execSQL("DELETE FROM countries WHERE id ="+mDeletedId); 

} 


public void ChangeTextSize(int textSize, int mIndex) { 
    System.out.println(textSize); 
    System.out.println(mIndex); 
    mDb.execSQL("update COUNTRIES set font = " + textSize + " where id =" + mIndex); 


} 

}

我想，當我從optionMenu點擊「刪除國家」 它將以編程方式添加刪除按鈕（或者別的什麼）旁邊的每一個TextView的，所有這些按鈕將採用同樣的方法（刪除）

Answer 1

1. 在XML文件中創建按鈕：

   <?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/row_category_button" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:text="Add" 
       android:layout_centerVertical="true" 
       android:layout_marginRight="10dp" 
       android:layout_alignLeft="@+id/row_category_name" 
       android:textColor="@color/black" 
       android:layout_alignParentRight="true" 
       android:layout_alignParentTop="true" /> 
   </RelativeLayout> 
   

2. 創建視圖支架和適配器類添加按鈕：

   ViewHolder holder ; 
   
   if(view ==null){ 
        view = inflater.inflate(R.layout.___, null); 
        holder = new ViewHolder(); 
        holder.tv = (TextView) view.findViewById(R.id.____); 
        holder.img =(ImageView) view.findViewById(R.id.______); 
        holder.btn =(Button) view.findViewById(R.id.button); 
        view.setTag(holder); 
       } 
   
   class ViewHolder{ 
       TextView tv; 
       ImageView img; 
       Button btn; 
   } 
   

Answer 2

而不是嘗試以編程方式添加按鈕，並使混亂，試試這個。

我假設您使用ListView的自定義數組適配器。將該按鈕添加到該行並將其對齊到文本視圖的右側。

使用定義行佈局的xml文件中的android:visibility="gone"使刪除按鈕不可見。

textView1.setOnLongClickListener(new OnLongClickListener() { 
    @Override 
    public boolean onLongClick(View v) { 
     deleteButton.setVisibility(true); 
deleteButton.setOnClickListener(new OnClickListener() { 
    @Override 
    public boolean onClick(View v) { 
     //delete the row here 
    } 
}); 
    } 
});