如何更改一次单击时和再次单击时列表视图的背景色，我需要不使用选择器来更改背景色

Question

如何在一次单击和再次单击时更改列表视图的背景颜色，我需要不使用选择器来更改背景颜色。我已经在选择每个项目时更改了背景。但是当我再次单击该项目时将背景颜色更改为红色。我如何给出条件。我将在此处发布我的代码。请提供建议。请帮助...

公共类ProvierActivity扩展了Activity {

private String text[] = { "BroadStripe-Cable (Seattle)",
        "BroadStripe-Digital (Seattle)", "BroadStripe-Cable (Seattle)",
        "Comcast king county south)", "BroadStripe-Cable (Seattle)",
        "Comcast king county south", "BroadStripe-Digital (Seattle)",
        "BroadStripe-Digital (Seattle)", "BroadStripe-Cable (Seattle)",
        "Comcast king county south" };

ImageView icon;
public static int selectedRow;

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

    final ListView list = (ListView) findViewById(R.id.listview_id);

    list.setAdapter(new ArrayAdapter<String>(this, R.layout.list,
            R.id.title, text));
    list.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> adapter, View view,
                int position, long arg3) {

            for (int i = 0; i < adapter.getChildCount(); i++) {
                if (i == position) {

                    adapter.getChildAt(i).setBackgroundColor(Color.BLUE);

                } else {
                    adapter.getChildAt(i).setBackgroundColor(Color.BLACK);

                }

            }

        }

    });
}

}

Answer 1

使用此编辑后的代码。

public static int selectedRow;

/** Called when the activity is first created. */

private int prePos=-1;


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    final ListView list = (ListView) findViewById(R.id.listview_id);

    list.setAdapter(new ArrayAdapter<String>(this, R.layout.list,
            R.id.title, text));
    list.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> adapter, View view,
                int position, long arg3) {

            for (int i = 0; i < adapter.getChildCount(); i++) {
                if (i == position) {   

                    if(position!=prePos){   
                       adapter.getChildAt(i).setBackgroundColor(Color.BLUE);

                      prePos=position;

                    }else{
                        adapter.getChildAt(i).setBackgroundColor(Color.BLACK);
                          prePos=-1;
                        }

                   }else{

                      adapter.getChildAt(i).setBackgroundColor(Color.BLACK);

                   }

                }


        }

    });
}

}

这将为您提供帮助。