如何在每一行中創建列表視圖項目+按鈕？

Question

我是新來的android編程，這個任務真的需要我的學校項目。請請幫助我。

我已經字符串數組列表 - （從CSV檢索）

list = new ArrayList<>(Arrays.asList("111,222,333,444,555,666".split(","))); 
    myList.setAdapter(new ArrayAdapter<String>(getActivity(),R.layout.cell,list)); 

結果表示的ArrayList行文本只線。我想添加按鈕到每行生成的行以刪除點擊行。

請問我該怎麼做。感謝您瞭解我的問題。

Answer 1

你必須創建其中具有單個項目，那麼你將與其他項目一起你的按鈕添加到該佈局自定義佈局的XML。

CustomLayout.Xml

<?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" > 

<TextView 
    android:id="@+id/tvContact" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:textSize="18sp" 
    android:textStyle="bold" /> 

<Button 
    android:id="@+id/btn" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Call" /> 


</RelativeLayout> 

現在創建自定義項目佈局後，你的ListView持有的所有項目。

MainActivity。在Java XML文件的

. 
. 
<ListView 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/listview" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" /> 
. 
. 

現在只要設置適配器與我們的自定義佈局XML

. 
. 
list = new ArrayList<String>(Arrays.asList("111,222,333,444,555,666".split(","))); 
listview.setAdapter(new MyCustomAdapter(list, context)); 
. 
. 

定義適配器類

public class MyCustomAdapter extends BaseAdapter implements ListAdapter { 
private ArrayList<String> list = new ArrayList<String>(); 
private Context context; 

public MyCustomAdapter(ArrayList<String> list, Context context) { 
    this.list = list; 
    this.context = context; 
} 

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

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

@Override 
public long getItemId(int pos) { 
    return list.get(pos).getId(); 
    //just return 0 if your list items do not have an Id variable. 
} 

@Override 
public View getView(final int position, View convertView, ViewGroup parent) { 
    View view = convertView; 
    if (view == null) { 
     LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     view = inflater.inflate(R.layout.CustomLayout, null); 
    } 

    //Handle TextView and display string from your list 
    TextView tvContact= (TextView)view.findViewById(R.id.tvContact); 
    tvContact.setText(list.get(position)); 

    //Handle buttons and add onClickListeners 
    Button callbtn= (Button)view.findViewById(R.id.btn); 

    callbtn.setOnClickListener(new View.OnClickListener(){ 
     @Override 
     public void onClick(View v) { 
      //do something 

     } 
    }); 
    addBtn.setOnClickListener(new View.OnClickListener(){ 
     @Override 
     public void onClick(View v) { 
      //do something 
      notifyDataSetChanged(); 
      . 
     } 
    }); 

    return view; 
} 
} 

Answer 2

使用列表中每個項目的唯一內容在另一個文件中創建自定義列表視圖。

然後創建自定義Adapter擴展BaseAdapter並綁定它。

請參考本網站的例子。

https://looksok.wordpress.com/tag/listview-item-with-button/

OR

http://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/

Answer 3

我們需要ListviewActivity上市數據

SchoolAdap之三這是自定義適配器誇大每個單排

activity_listview是佈局ListviewActivity

view_listview_row這是需要每個單排

現在創建的所有文件，如下

For ListviewActivity，

public class ListviewActivity extends AppCompatActivity { 

private ListView mListview; 
private ArrayList<String> mArrData; 
private SchoolAdapter mAdapter; 

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

    mListview = (ListView) findViewById(R.id.listSchool); 

    // Set some data to array list 
    mArrData = new ArrayList<String>(Arrays.asList("111,222,333,444,555,666".split(","))); 

    // Initialize adapter and set adapter to list view 
    mAdapter = new SchoolAdapter(ListviewActivity.this, mArrData); 
    mListview.setAdapter(mAdapter); 
    mAdapter.notifyDataSetChanged(); 

} 

對於SchoolAdapter，

public class SchoolAdapter extends BaseAdapter { 

private Context mContext; 
private ArrayList<String> mArrSchoolData; 

public SchoolAdapter(Context context, ArrayList arrSchoolData) { 
    super(); 
    mContext = context; 
    mArrSchoolData = arrSchoolData; 
} 

public int getCount() { 
    // return the number of records 
    return mArrSchoolData.size(); 
} 

// getView method is called for each item of ListView 
public View getView(int position, View view, ViewGroup parent) { 
    // inflate the layout for each item of listView 
    LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    view = inflater.inflate(R.layout.view_listview_row, parent, false); 


    // get the reference of textView and button 
    TextView txtSchoolTitle = (TextView) view.findViewById(R.id.txtSchoolTitle); 
    Button btnAction = (Button) view.findViewById(R.id.btnAction); 

    // Set the title and button name 
    txtSchoolTitle.setText(mArrSchoolData.get(position)); 
    btnAction.setText("Action " + position); 

    // Click listener of button 
    btnAction.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      // Logic goes here 
     } 
    }); 

    return view; 
} 

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

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

對於activity_listview，

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:background="#D1FFFF" 
android:orientation="vertical"> 


<ListView 
    android:id="@+id/listSchool" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:divider="#0000CC" 
    android:dividerHeight="0.1dp"></ListView> 

對於view_listview_row，

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:orientation="vertical" 
android:paddingBottom="7.5dp" 
android:paddingLeft="15dp" 
android:paddingRight="15dp" 
android:paddingTop="7.5dp"> 

<TextView 
    android:id="@+id/txtSchoolTitle" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:paddingLeft="2dp" 
    android:text="TextView" 
    android:textColor="@android:color/black" 
    android:textSize="20dp" /> 

<Button 
    android:id="@+id/btnAction" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_gravity="right" 
    android:text="Click Me" /> 

最後但並非最不重要，不要忘了添加在的manifest.xml您的活動