【发布时间】:2015-04-12 11:50:32
【问题描述】:
我有一个显示篮球队日程的应用。它列出了他们已经玩过的游戏,然后是即将到来的游戏。我正在根据是否玩过游戏来更改行布局。例如,如果游戏已经玩过,我会在 TextView 中显示“W”或“L”,但如果游戏还没有玩过,我会隐藏这个 TextView。
我的问题是,当我滚动到底部时,所有 TextView 都被隐藏,然后滚动回顶部,所有开始的“L”和“W”现在都在隐。有没有办法防止这种情况发生?这是我的适配器:
package com.example.sixerstrivia;
import java.util.ArrayList;
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class GameAdapter extends ArrayAdapter<Game> {
public GameAdapter(Context context, ArrayList<Game> games) {
super(context, R.layout.game_row, games);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final Game game = getItem(position);
if (convertView == null) {
convertView = LayoutInflater.from(getContext()).inflate(
R.layout.game_row, parent, false);
}
TextView tvTopTeam = (TextView) convertView
.findViewById(R.id.tvTopTeam);
TextView tvBottomTeam = (TextView) convertView
.findViewById(R.id.tvBottomTeam);
TextView tvTopScore = (TextView) convertView
.findViewById(R.id.tvTopScore);
TextView tvBottomScore = (TextView) convertView
.findViewById(R.id.tvBottomScore);
TextView tvAt = (TextView) convertView.findViewById(R.id.tvAt);
TextView tvVs = (TextView) convertView.findViewById(R.id.tvVs);
TextView tvWin = (TextView) convertView.findViewById(R.id.tvWin);
TextView tvDate = (TextView) convertView.findViewById(R.id.tvDate);
if (game.completed) {
tvDate.setText(game.gameDate);
if (game.win) {
tvWin.setText("W");
tvWin.setTextColor(Color.GREEN);
} else {
tvWin.setText("L");
tvWin.setTextColor(Color.RED);
}
} else {
tvDate.setText(game.gameDate + "\n" + game.gameTime + " PM");
tvWin.setVisibility(View.GONE);
tvTopScore.setVisibility(View.INVISIBLE);
tvBottomScore.setVisibility(View.INVISIBLE);
}
if (!game.homeTeam.equals("PHI")) {
tvTopTeam.setText(game.awayTeam);
tvVs.setVisibility(View.GONE);
if (game.completed) {
tvAt.setVisibility(View.GONE);
tvTopScore.setText(game.awayScore);
tvBottomScore.setText(game.homeScore);
}
tvBottomTeam.setText(game.homeTeam);
} else {
tvTopTeam.setText(game.homeTeam);
tvAt.setVisibility(View.GONE);
if (game.completed) {
tvVs.setVisibility(View.GONE);
tvTopScore.setText(game.homeScore);
tvBottomScore.setText(game.awayScore);
}
tvBottomTeam.setText(game.awayTeam);
}
return convertView;
}
}
【问题讨论】:
-
使用 viewHolder。它可以解决您的问题