Question

我正在尝试根据项目的值更改片段中ListView中列表项的颜色。任何建议都会很棒。我已经尝试了getView()的一些选项，但没有运气。

String[] validvalues = new String[] {personalList, doctorsList,carerList,
    myMedList,mymedproblist,kinList,relyList,allergiesList
};

ArrayAdapter<String> files2 = new ArrayAdapter<String>(
    getActivity(), android.R.layout.simple_list_item_1,validvalues);
View view2 = inflater.inflate(R.layout.verify, container, false);

list.setAdapter(files2);
list.setOnItemClickListener(new OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view2,int position, long id) {
        String str = list.getItemAtPosition(position).toString();
        Toast.makeText(getActivity(), position + " " + str,Toast.LENGTH_SHORT).show();
    }
});

像string.contains（“!!”）＆gt;将背景颜色设置为红色。

Answer 1

创建自定义Adapter类（可能从它派生），而不是使用ArrayAdapter。然后，在getView（）方法中，设置返回视图的背景颜色。例如，只需使用以下代码更改代码中的ArrayAdapter创建：

ArrayAdapter<String> files2 = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,validvalues)
{
    @Override
    public View getView(int position, View convertView, ViewGroup parent)
    {
        View itemView = super.getView(position, convertView, parent);
        if (getItem(position).contains("!!"))
            itemView.setBackgroundColor(Color.RED);

        return itemView;
    }
};

Answer 2

您需要创建自己的Adapter。

我会扩展ArrayAdapter并覆盖getView()，使其看起来像这样：

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // Note: you could get a LayoutInflater and inflate your own layout here instead
    // of calling through to super.
    View row = super.getView(position, convertView, parent);

    String content = getItem(position);
    if (content.equals("StringToLookFor") {
        row.setBackgroundColor(yourRowColor);
    } else {
        row.setBackgroundColor(yourOtherRowColor);
    }
}

Answer 3

在这种情况下，您必须定义自己的自定义适配器

 public class myadapter  extends ArrayAdapter<String>
  {

    public myadapter(Context context, int textViewResourceId) {
        super(context, textViewResourceId);
        // TODO Auto-generated constructor stub
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return validvalues.size();
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // here you can  change color 
        View v = convertView;
        if (v == null) {
            LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = vi.inflate(R.layout.yourcustomlayout, null);
        }
        if (validvalues[position].equals( ""))
        v.setBackgroundColor(color)
        return super.getView(position, convertView, parent);
    }


  }

Answer 4

使用这段代码，我给了你一个偶数和奇数位置的例子（你可以像你一样改变位置上的条件）

    ArrayAdapter<String> adapter = new MyListAdapter();
    listView = (ListView) findViewById(R.id.myListView);
    listView.setAdapter(adapter);

这是MyListAdapter的实现

public class MyListAdapter extends ArrayAdapter<IArtVO> {

    private class MyListAdapter extends ArrayAdapter<INoteVO> {

    public MyListAdapter() {
        super(context, R.layout.ifact1_help2, R.layout.ifact1_help1, liste);
    }

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

    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public int getItemViewType(int position) {
        if (position % 2 == 0) {
            return 1;
        }
        return 0;
    }


    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View itemView = convertView;
        if (position % 2 == 0) {
            itemView = getLayoutInflater().inflate(R.layout.textViewRed, parent, false);
            itemView.setText(" your text");

        } else {
            itemView = getLayoutInflater().inflate(R.layout.textViewGreen, parent, false);
            itemView.setText(" your text");
        }
        return itemView;
    }

}

这里是textViewRed.xml和green，你必须在目录布局上定义

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:paddingLeft="10dp"
android:textColor="@color/black"
android:background="@color/red"
/>

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:paddingLeft="10dp"
android:textColor="@color/black"
android:background="@color/green"
/>

根据列表android中的值更改listview中列表项的颜色

4 个答案: