Question

我是一个新手android.I我的迷你应用程序有一些问题。你可以看到下图： http://i481.photobucket.com/albums/rr175/viethungit/android.png

首先，第1行（布局1）出现listview时出现第1行，第2行（布局2）中的单击按钮，然后继续...单击按钮添加第1行，布局2出现在列表视图中.... 我尝试从Mr.Google搜索，但我找不到... 任何人都可以帮助我！

这是布局和活动我不知道如何实现

add_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="#EEEEEE"
    android:orientation="horizontal"
    android:padding="5dip">

    <!-- Image Item-->
    <ImageButton
            android:id="@+id/imgItem"
            android:layout_width="40dip"
            android:layout_height="40dip"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true"
            android:layout_marginLeft="2dp"
            android:contentDescription="@string/imgView"  />

    <!-- Name item  -->

    <EditText
        android:id="@+id/edtItem"
        android:layout_width="100dp"
        android:layout_height="40dp"
        android:layout_marginLeft="5dp"
        android:layout_toRightOf="@+id/imgItem"
        android:background="@drawable/bg"
        android:hint="@string/txtTitle"
        android:textSize="20dip" />   

    <!-- Button add -->
    <Button        
        android:id="@+id/btnAdd"
        android:background="@drawable/add"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"/>
    <!-- item -->
    <TextView
        android:id="@+id/txtSubtitle"
        android:layout_width="100dp"
        android:layout_height="40dp"
        android:layout_toLeftOf="@+id/btnAdd"
        android:gravity="right|center_vertical"
        android:layout_centerVertical="true"
        android:textSize="20dip"
        android:text="@string/txtSubtitle" />

</RelativeLayout>


plus_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="#EEEEEE"
    android:orientation="horizontal"
    android:padding="5dip" >

    <!-- Image Item -->
    <ImageView
        android:id="@+id/imgItem"
        android:src="@drawable/chomsao"
        android:layout_width="40dip"
        android:layout_height="40dip"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:layout_marginLeft="2dp"
        android:contentDescription="@string/imgView" />

    <!-- Name Item -->
    <TextView
        android:id="@+id/edtItem"
        android:layout_width="wrap_content"
        android:layout_height="40dp"
        android:layout_marginLeft="5dp"
        android:layout_toRightOf="@+id/imgItem"
        android:layout_centerVertical="true"
        android:gravity="center_vertical"
        android:text="@string/txtTitle"
        android:textSize="20dip" />

    <!-- Quantity Item -->
    <TextView 
        android:id="@+id/txtQtyItem"
        android:layout_width="wrap_content"
        android:layout_height="40dp"
        android:layout_toRightOf="@id/edtItem"
        android:layout_marginLeft="20dp"
        android:gravity="center_vertical"
        android:textSize="20dip"
        android:text="@string/QuantityItem"/>

    <!-- Button plus -->
    <Button
        android:id="@+id/btnPlus"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:background="@drawable/plus" />

    <!-- Button minus -->
    <Button
        android:id="@+id/btnMinus"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_centerVertical="true"
        android:layout_alignBaseline="@id/btnPlus"
        android:layout_toLeftOf="@+id/btnPlus"
        android:background="@drawable/minus" />

    <!-- Price Item -->
    <TextView
        android:id="@+id/txtSubtitle"
        android:layout_width="100dp"
        android:layout_height="40dp"
        android:layout_centerVertical="true"
        android:layout_toLeftOf="@+id/btnMinus"
        android:gravity="right|center_vertical"
        android:text="@string/txtSubtitle"
        android:textSize="20dip" />

</RelativeLayout>



activity_main.xml
        <RelativeLayout 
        android:id="@+id/relative1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/relative"
        android:layout_above="@id/relative2"
        android:background="#EEEEEE"
        android:layout_marginLeft="1.5dp"
        android:layout_marginRight="1.5dp"
        android:layout_marginTop="1.5dp">

        <ListView
            android:id="@+id/listSale"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >
        </ListView>        
    </RelativeLayout>

Answer 1

public class AndroidCustomListViewActivity extends Activity {
    private ListView myList;
    private MyAdapter myAdapter;
    private ImageView myImage;
    public static  String upload= " ";
    public static String GalleryImage;
    public ArrayList<ListItem> myItems = new ArrayList<ListItem>();

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.listandimage);

        myList = (ListView) findViewById(R.id.MyList);
        myImage= (ImageView)findViewById(R.id.image1);

        myList.setItemsCanFocus(true);
        myAdapter = new MyAdapter();

        ListItem listItem = new ListItem();
        listItem.textdata="@";
        listItem.caption = "";
        myItems.add(listItem);

        myList.setAdapter(myAdapter);
        myAdapter.notifyDataSetChanged();


    }


    public class MyAdapter extends BaseAdapter {
        private LayoutInflater mInflater;

        public MyAdapter() {
            mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        }

        public int getCount() {
            return myItems.size();
        }

        public ListItem getItem(int position) {
            return myItems.get(position);
        }

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

        public View getView(final int position, View convertView, ViewGroup parent) {
            final ViewHolder holder;
            if (convertView == null) {
                holder = new ViewHolder();
                convertView = mInflater.inflate(R.layout.item, null);
                holder.text=(TextView )convertView.findViewById(R.id.textView1); 
                holder.captionEditText = (EditText) convertView.findViewById(R.id.ItemCaption);

                holder.addOrDeleteButton = (Button) convertView.findViewById(R.id.buttonAdd);

                holder.captionEditText.setFocusable(true);
                holder.captionEditText.requestFocus();

                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }

            // Fill EditText with the value you have in data source
            // holder.captionEditText.setId(position);
            holder.text.setTag(position);
            holder.captionEditText.setTag(position);
            holder.captionEditText.setText(getItem(position).caption);

            holder.addOrDeleteButton.setTag(position);

            // / this updates tag of
            // the button view as we
            // scroll ///

            holder.addOrDeleteButton.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View view) {
                    // TODO Auto-generated method stub
                    int tag = (Integer) view.getTag();
                    if (tag != (myItems.size() - 1)) {
                        myItems.remove(tag);
                        Log.d("GCM", "Item removed from " + tag);
                        myAdapter.notifyDataSetChanged();
                    } else {
                        ListItem listItem = new ListItem();
                        listItem.textdata="@";
                        listItem.caption = "";
                        myItems.add(listItem);


                        /*
                         * Log.d("GCM", holder.captionEditText.getText()
                         * .toString()); myItems.get((Integer)
                         * view.getTag()).caption = holder.captionEditText
                         * .getText().toString();
                         */
                        myAdapter.notifyDataSetChanged();
                        myList.setSelection(myAdapter.getCount() - 1);
                        // holder.captionEditText.setFocusable(true);
                        // holder.captionEditText.requestFocus();

                    }
                }
            });

            holder.captionEditText.addTextChangedListener(new TextWatcher() {

                public void onTextChanged(CharSequence s, int start,
                        int before, int count) {
                    // TODO Auto-generated method stub

                }

                public void beforeTextChanged(CharSequence s, int start,
                        int count, int after) {
                    // TODO Auto-generated method stub

                }

                public void afterTextChanged(Editable s) {
                    // if(position < myItems.size())
                    // getItem(position).caption = s.toString();

                    myItems.get((Integer) holder.captionEditText.getTag()).caption = holder.captionEditText
                            .getText().toString();

                }
            });

            if (position != (myItems.size() - 1)) {
                holder.addOrDeleteButton.setBackgroundResource(R.drawable.fruttarecloseicon);
            } else {
                holder.addOrDeleteButton.setBackgroundResource(R.drawable.fruttareaddicon);
                holder.text.setFocusable(true);
                holder.captionEditText.setFocusable(true);
                holder.text.requestFocus();
                holder.captionEditText.requestFocus();

            }

            return convertView;
        }

    }

    class ViewHolder {

        TextView text;
        EditText captionEditText;
        Button addOrDeleteButton;
    }

    class ListItem {
        String textdata;
        String caption;
    }
}

使用此代码根据您的需要进行编辑。

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

    <TextView
        android:id="@+id/textView1"
        android:layout_width="15dp"
        android:layout_height="50dp"
        android:text=" @"
       />

    <EditText
        android:id="@+id/ItemCaption"
        android:layout_width="270dp"
        android:layout_height="50dp"
        android:layout_margin="3dip"
        android:imeOptions="actionDone|flagNoExtractUi"
        android:inputType="textNoSuggestions"
        android:singleLine="true" >
    </EditText>

    <Button
        android:id="@+id/buttonAdd"
        android:layout_width="75dp"
        android:layout_height="50dp"
        android:layout_margin="3dip"
        />

</LinearLayout>


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#fff"
    android:orientation="horizontal" >

    <ListView
        android:id="@+id/MyList"
        android:layout_width="370dp"
        android:layout_height="160dp"
        android:layout_gravity="center|top"
        android:layout_marginLeft="150dp"
        android:descendantFocusability="beforeDescendants" 
             >
    </ListView>

    <ImageView
        android:id="@+id/image1"
        android:layout_width="80dp"
        android:layout_height="80dp"

         />

</LinearLayout>

如果有用，请将答案标记为正确!!

Answer 2

您可以创建元素（如按钮，视图等）并将它们添加到现有视图中，如：

myListView.addChild(CreatedButton);

如何在项目列表视图中单击按钮时在android中的listview中添加/删除项目

2 个答案: