Question

我正在尝试在具有id容器的LinearLayout中填充R.layout。正如我在Android Studio的“布局检查器”中看到的那样，布局是膨胀的，但在应用运行时未在模拟器中显示。

单击按钮会发生充气。该按钮位于cardView内部。所有卡都在适配器内部生成。我正在发布适配器的getView方法。

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

    Button show = convertView.findViewById(R.id.button);
    final LinearLayout container = convertView.findViewById(R.id.container);
    final LayoutInflater infl = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    show.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            infl.inflate(R.layout.card_text, container,true);
            v.setVisibility(View.GONE);
            TextView text = (TextView) ((SwipeStack) parent).getTopView().findViewById(R.id.text);
            text.setText("dsfsfsf");
        }
    });
    return convertView;
}

如果我移动此行

                infl.inflate(R.layout.card_text, container,true);

在OnClickListener之外（在主函数的主体中），它工作正常。

我正在使用此库 https://github.com/flschweiger/SwipeStack

和此适配器

public class SwipeStackAdapter extends ArrayAdapter<Item>{

private List<Item> mData;
private Context ctx;

public SwipeStackAdapter(Context ctx,List<Item> data) {
    super(ctx, R.layout.card,data);
    this.ctx = ctx;
    this.mData = data;
}

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

@Override
public Word getItem(int position) {
    return mData.get(position);
}

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

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

    Button show = convertView.findViewById(R.id.button);
    final LinearLayout container = convertView.findViewById(R.id.container);
    final LayoutInflater infl = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    show.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            infl.inflate(R.layout.card_text, container,true);
            v.setVisibility(View.GONE);
            TextView text = (TextView) ((SwipeStack) parent).getTopView().findViewById(R.id.text);
            text.setText("dsfsfsf");

        }
    });
    return convertView;
}

}

为什么会这样？有什么建议吗？

Answer 1

您需要将新视图附加到现有视图。我看不到您将膨胀视图添加到另一个视图中。如果要将膨胀视图添加到LinearLayout中，则需要执行以下操作：

LinearLayout containerLy = findViewById(R.id.container);
View inflatedView = getLayoutInflater().inflate(R.layout.my_layout_to_be_inflated, null);
//manipulate here your inflated view
containerLy.add(inflatedView);

布局夸大但不可见

1 个答案: