Question

我现在有问题！我有自定义ListView，我有两个TextView元素。我想在ListView元素中为一个TextView设置setVisibility（TextView.gone）。我不知道怎么做

编写一个示例，说明如何在ListView

的所有项目中隐藏TextView ienter代码

的ListView：

<ListView
            android:id="@+id/listResultAvia"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_gravity="left"
            android:layout_weight="1"
            android:background="#ffffff"
            android:cacheColorHint="#ffffff"
            android:drawingCacheQuality="auto" >

            <!-- Preview: listitem=@layout/item -->
        </ListView>

ListVIew的自定义项：

<?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="wrap_content"
    android:background="#fff" >
        <TextView
            android:id="@+id/textViewTimeResult"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Large Text"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:textColor="#000000" />

        <TextView
            android:id="@+id/textViewTimeResult2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Large Text"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:textColor="#000000"/>
    </LinearLayout>

告诉我如何在onCreate中隐藏textViewTimeResult2。如果我写：

TextView test = (TextView) findById(R.id.textViewTimeResult2);
test.setVisibility(TextView.GONE);

我的程序在开始时崩溃了。

添加

我使用下面的答案，但现在我得到空ListView。我该如何解决这个问题？

Answer 1

在适配器中，您可以尝试使用此代码隐藏第二个文本视图。

public View getView(int position, View convertView, ViewGroup parent){
       convertView = mInflater.inflate(R.layout.your_custom_list_layout, null);
    TextView textOne = (TextView)convertView.findViewById(R.id.txtOne);
    TextView textTwo = (TextView)convertView.findViewById(R.id.txtTwo);

    textTwo.setVisibility(View.GONE);

    return convertView;
}

<强>增加：你可以添加一个在onClick()内切换的布尔值，然后修改getView();

    boolean hideTextTwo = false;

    onClick(View v){
      hideTextTwo = true;
      yourAdapter.notifyDatasetChanged();

    }


public View getView(int position, View convertView, ViewGroup parent){
    convertView = mInflater.inflate(R.layout.your_custom_list_layout, null);
    TextView textOne = (TextView)convertView.findViewById(R.id.txtOne);
    TextView textTwo = (TextView)convertView.findViewById(R.id.txtTwo);

if(hideTextTwo){
    textTwo.setVisibility(View.GONE);
}

    return convertView;
}

Answer 2

//在适配器中

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

        if (convertView == null) {
            inflater = context.getLayoutInflater();
            holder = new ViewHolder();
            convertView = inflater.inflate(R.layout.list_row, null);
            holder.first_line=(TextView) convertView.findViewById(R.id.textview_row1);

            holder.second_line=(TextView) convertView.findViewById(R.id.second_row);

            convertView.setTag(holder);
        }


//TODO: hiding the first_line in the listview 
            holder.first_line.setVisibility(View.GONE);
            holder.second_line.setText("");
return (convertView);
        }

自定义ListView中的setVisitility项

2 个答案: