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我是Android新手。我有一個列表視圖,它有圖像,文本和播放/暫停按鈕。當我單擊一行中的播放按鈕,然後單擊另一行中的播放按鈕時,兩個按鈕的背景都保持暫停狀態。所以我希望當我點擊連續的播放按鈕,然後點擊另一行的播放按鈕時,第一個按鈕的背景應該變爲播放,而第二個背景應該保持暫停。提前致謝。Listview中的播放/暫停按鈕沒有更新
public class MyListAdapter extends ArrayAdapter<String> {
private String[] gelenurl;
List<String> gelen_ad;
public static MediaPlayer mPlayer= new MediaPlayer();
private int layout;
public MyListAdapter(Context context, int resource, List<String> objects, String[] arr) {
super(context, resource, objects);
layout=resource;
gelenurl=arr;
gelen_ad=objects;
}
@NonNull
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder mainViewholder;
if(convertView==null) {
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView=inflater.inflate(layout, parent, false);
mainViewholder= new ViewHolder();
convertView.setTag(mainViewholder);
}
else {
mainViewholder = (ViewHolder) convertView.getTag();
}
mainViewholder.img = (ImageView) convertView.findViewById(R.id.list_item_thumbnail);
mainViewholder.img.setImageResource(R.drawable.ic_radio);
mainViewholder.title = (TextView) convertView.findViewById(R.id.list_item_text);
mainViewholder.title.setText(getItem(position));
mainViewholder.button = (ImageButton) convertView.findViewById(R.id.list_item_btn);
mainViewholder.button.setImageResource(R.drawable.transparent_play);
mainViewholder.button.setBackgroundColor(Color.WHITE);
mainViewholder.button.setVisibility(View.VISIBLE);
mainViewholder.stop_button = (ImageButton) convertView.findViewById(R.id.list_item_stop_btn);
mainViewholder.stop_button.setImageResource(R.drawable.transparent_stop);
mainViewholder.stop_button.setBackgroundColor(Color.WHITE);
final ViewHolder vh = mainViewholder;
vh.stop_button.setVisibility(View.INVISIBLE);
mainViewholder.button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
vh.button.setVisibility(View.INVISIBLE);
vh.stop_button.setVisibility(View.VISIBLE);
try {
radioLinks(gelenurl[position]);
} catch (IOException e) {
e.printStackTrace();
}
}
public void radioLinks(String city) throws IOException {
if(mPlayer.isPlaying()) {
mPlayer.stop();
mPlayer.reset();
}
mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mPlayer.setDataSource(city);
mPlayer.prepareAsync();
mPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mPlayer.start();
}
});
}
});
mainViewholder.stop_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
vh.button.setVisibility(View.VISIBLE);
vh.stop_button.setVisibility(View.INVISIBLE);
mPlayer.stop();
mPlayer.reset();
}
});
return convertView;
}
}
我真的非常感謝您的回答,我知道這樣做會有效,但我無法正確應用,可能是我在錯誤的地方定義了一些東西 – PinkRabbits