如何在listView中的每個條目上顯示覆選框

Question

從此活動中，我從textField獲取文本並將其顯示在ListView中。 現在我想添加listView單元格中每個條目的複選框，並且還想知道如何在單個ListView單元格中顯示多個文本。 幫助代碼將不勝感激。 這裏是我的代碼....

public class AfterRegister extends AppCompatActivity 
{ 
    ListView listView; 
    EditText editText; 
    Button insertItemButton; 
    ArrayList<String> arrayList = new ArrayList<String>(); 
    ArrayAdapter<String> adapter; 
    CheckBox checkBox; 

    StoreRegistrationDataBase storeRegistrationDataBase; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) 
    { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_after_register); 
     storeRegistrationDataBase = new StoreRegistrationDataBase(this); 
     storeRegistrationDataBase = storeRegistrationDataBase.open(); 

     checkBox = (CheckBox) findViewById(R.id.checkbox); 

     insertItemButton = (Button) findViewById(R.id.button4); 
     insertItemButton.setOnClickListener(new View.OnClickListener() 
     { 
      @Override 
      public void onClick(View v) 
      { 
       editText = (EditText) findViewById(R.id.editText2); 
       listView = (ListView) findViewById(R.id.listView); 
       String getEditTextString = editText.getText().toString(); 

       if(isAlphaNumeric(getEditTextString)) 
       { 
        if(!getEditTextString.equals("")) 

        { 
         arrayList.add(getEditTextString); 

         adapter = new ArrayAdapter<String>(getBaseContext(), R.layout.text_view_layout, R.id.achView1, arrayList); 
         listView.setAdapter(adapter); 



         adapter.notifyDataSetChanged(); 
         editText.setText(""); 

        } 
        else 
        { 
         Toast.makeText(AfterRegister.this, "You can not insert empty field", Toast.LENGTH_SHORT).show(); 
        } 
       } 
       else 
       { 
        Toast.makeText(AfterRegister.this, "Remove Space", Toast.LENGTH_SHORT).show(); 
       } 
      } 
     }); 
     listView.setOnTouchListener(new View.OnTouchListener() 
     { 
      @Override 
      public boolean onTouch(View v, MotionEvent event) 
      { 

       return false; 
      } 
     }); 
    } 

    public boolean isAlphaNumeric(String s) 
    { 
     String pattern= "^[a-zA-Z0-9]*$"; 
     if(s.matches(pattern)) 
     { 
      return true; 
     } 
     return false; 
    } 
} 

Answer 1

你必須使用一個BaseAdapter和一些getter/setter方法在你的列表視圖中的每一項添加多個文字/圖像/其他UI元素。

你必須實現多個東西才能得到這個結果。它們是 -

1. 爲ListView的每個項目創建一個自定義佈局。

listview_item_layout.xml

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

    <TextView 
     android:id="@+id/layout_textview1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textSize="15sp" 
     android:layout_marginRight="5dip" 
     android:textStyle="bold"/> 

    <TextView 
     android:id="@+id/layout_textview2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textSize="15sp" 
     android:layout_marginLeft="5dip" 
     android:textStyle="bold"/> 

      <CheckBox 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:id="@+id/checkbox" 
      android:text="Test"/> 

</LinearLayout> 

創建自定義類和添加一些getter/setter方法。

ListRowItem.java

public class ListRowItem implements Serializable{ 
String carrier,number; 

public String getCarrier(){ 
    return carrier; 
} 

public String getNumber(){ 
    return number; 
} 

public void setCarrier(String ba_carrier){ 
    carrier = ba_carrier; 
} 

public void setNumber(String ba_number){ 
    number = ba_number; 
} 
} 

創建自定義類和擴展類BaseAdapter。

public class MyBaseAdapter extends BaseAdapter { 

public Context ba_context; 
public ArrayList<ListRowItem> listitem = new ArrayList<>(); 
public LayoutInflater inflater; 
ListRowItem currentlistitem; 

public MyBaseAdapter(Context ma_context, ArrayList<ListRowItem> ma_listitem) { 
super(); 
this.ba_context = ma_context; 
this.listitem = ma_listitem; 

inflater = (LayoutInflater) ba_context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
} 

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

@Override 
public Object getItem(int position) { 
return this.listitem.get(position); 
} 

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

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
View vi = convertView; 

if (convertView == null) 
    vi = inflater.inflate(R.layout.listview_item_layout, parent, false); 

TextView carrier = (TextView) vi.findViewById(R.id.layout_textview1); 
TextView number = (TextView) vi.findViewById(R.id.layout_textview2); 

currentlistitem = listitem.get(position); 

String str_carrier = currentlistitem.getCarrier(); 
String str_number = currentlistitem.getNumber(); 

carrier.setText(str_carrier); 
number.setText(str_number); 

return vi; 
} 
} 

最後，填充ArrayList並在您的MainActivity中設置適配器。

ArrayList<ListRowItem> listitem = new ArrayList<>(); 
Context context = TestActivity.this; 
MyBaseAdapter baseAdapter; 

ListRowItem lr = new ListRowItem(); 
lr.setNumber(number); 
lr.setCarrier(carrier); 

listitem.add(lr); 

baseAdapter = new MyBaseAdapter(context,listitem); 

setContentView(R.layout.activity_test); 
listView = (ListView) findViewById(R.id.list_view); 
listView.setAdapter(baseAdapter); 

希望這有助於！