Question

我的应用程序是条形码阅读器，用户读取条形码ID即可将其设置为Textview，他可以在editText中输入产品编号。我在listview中实现，其中包括textview和editText。当用户扫描到条形码编号时，我在textView上对其进行了设置，但是我希望在设置为文本后自动按顺序聚焦编辑文本。我该怎么做？

编辑！！我已经添加请求重点，但始终关注1. editText，并且当扫描2.条形码时1.editText值再次取“ 0”;

这是我的listView;

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这是我的适配器；

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

<TextView
    android:id="@+id/ID"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="3"
    android:ellipsize="end"
    android:padding="5dp"
    android:singleLine="true" />

<EditText
    android:id="@+id/Quantity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:ellipsize="end"
    android:padding="5dp"
    android:singleLine="true"
    android:inputType="number">
    <requestFocus />
    </EditText>
</LinearLayout>

这是活动；

public class ListViewAdapter extends BaseAdapter {

public ArrayList<Model> productList;
Activity activity;

public ListViewAdapter(Activity activity, ArrayList<Model> productList) {
    super();
    this.activity = activity;
    this.productList = productList;
}

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

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

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

private class ViewHolder {
    TextView ID;
    EditText Quantity;
}

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

    ViewHolder holder;
    LayoutInflater inflater = activity.getLayoutInflater();

    if (convertView == null) {
        convertView = inflater.inflate(R.layout.listview_row, null);
        holder = new ViewHolder();
        holder.ID = (TextView) convertView.findViewById(R.id.ID);
        holder.Quantity = (EditText) convertView.findViewById(R.id.Quantity);;
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    Model item = productList.get(position);
    holder.ID.setText(item.getID().toString());
    holder.Quantity(String.valueOf(item.getQuantity()));
    return convertView;
}
}

Answer 1

在将所有视图设置为类似后，只需在您的EditText上设置request focus

//your other view like textview and imageview if you have
Quantity.requestFocus();

Answer 2

尝试此代码。

md5

和xml代码。

    edittextbox.requestFocus();

Answer 3

在您的Adapter getView（）方法中编写此

 holder.ID.addTextChangedListener(new TextWatcher() { @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
          holder.Quantity.requestFocus();
        }
    });

Answer 4

这是一种解决方法，它将强制将键盘显示在目标editText上。

InputMethodManager keyboard = (InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
keyboard.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);

Answer 5

尝试一下：

public void populateList(String ID){
    item = new Model(ID,0);
    mlist.add(item);
    adapter.notifyDataSetChanged();

    ListView listView = (ListView) findViewById(R.id.listview);
    listView.smoothScrollToPosition(mlist.size() - 1);
    LinearLayout childView = (LinearLayout)listView.getChildAt(listView.getLastVisiblePosition() - listView.getFirstVisiblePosition());
    EditText quantity = (EditText)childView.findViewById(R.id.Quantity);
    quantity.requestFocus();
}

希望有帮助！

在列表视图中关注订单editTexts

5 个答案: