Question

我正在Android中创建一个音频播放器，并在列表视图中显示歌曲列表。我想在列表视图中更改当前播放歌曲的背景颜色。歌曲完成后歌曲会更改，在这种情况下设置此歌曲的背景颜色，并从列表中之前选定的歌曲中删除背景颜色。

Answer 1

                yourview = v;
                v.setBackgroundResource(R.color.transparent_green);

Answer 2

使用完整的源代码检查此Customized ListView item's selection color如何更改列表视图项的背景颜色。

Answer 3

package com.finallys.sandy;

import java.util.ArrayList;

import android.app.Activity;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {

    ArrayList<String> arr = new ArrayList<String>();

    public HelloBase mAdapter;

    LayoutInflater li;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ListView mListView = new ListView(this);
        li = getLayoutInflater();

        for (int i = 0; i < 100; i++) {
            arr.add("this is my song" + i);
        }
        mAdapter = new HelloBase();
        mListView.setAdapter(mAdapter);
        setContentView(mListView);
    }

    class HelloBase extends BaseAdapter {

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

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return 0;
        }

        class ViewHolder {
            TextView txt;
        }

        ViewHolder vhHolder;

        @SuppressWarnings("null")
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            vhHolder = new ViewHolder();
            if (convertView == null) {
                convertView = li.inflate(R.layout.activity_main, null);
                vhHolder.txt = (TextView) convertView
                        .findViewById(R.id.webView1);
                convertView.setTag(vhHolder);
            } else {
                vhHolder = (ViewHolder) convertView.getTag();
            }
            vhHolder.txt.setText(arr.get(position));
            vhHolder.txt.setOnClickListener(new OnMyClick(vhHolder.txt));
            return convertView;
        }

        class OnMyClick implements OnClickListener {

            TextView txt;

            OnMyClick(TextView txt) {
                this.txt = txt;
            }

            @Override
            public void onClick(View v) {
                txt.setTextColor(Color.RED);
                mAdapter.notifyDataSetChanged();

                if (preTextView != null)
                    preTextView.setTextColor(Color.BLACK);

                preTextView = txt;

            }

        }
    }

    TextView preTextView;
}

背景ListView中列表项的颜色

3 个答案: