我实现了播放/停止按钮。当我在播放时按下同一个按钮时，它应该停止或暂停 && 背景也会改变播放 --> 停止。当我在播放时按下另一个按钮时，它应该停止并播放新歌曲。它有效。但不能'不改变背景播放--->停止。帮帮我。如何获取上一首歌曲的 ID 值...
public class MySimpleArrayAdapter extends ArrayAdapter<String>{
protected static final String TAG = "MySImpleArrayAdapter";
private final Context context;
protected ListView mListView;
int itemno;
Boolean playing = false;
private MediaPlayer mp;
private LayoutInflater inflater;
String[] values;
int songs []= {R.raw.sound1,R.raw.sound2,R.raw.sound3,R.raw.sound4,R.raw.sound5,R.raw.sound6,R.raw.sound7};
static class ViewHolder {
public TextView text;
public Button button;
}
public MySimpleArrayAdapter(Context context, String[] values) {
super(context, R.layout.activity_main, values);
inflater = LayoutInflater.from(context);
this.context = context;
this.values = values;
}
@Override
public View getView( int position, View rowView, ViewGroup parent) {
if (rowView == null) {
rowView = inflater.inflate(R.layout.activity_main, null);
ViewHolder viewHolder = new ViewHolder();
viewHolder.text = (TextView) rowView.findViewById(R.id.label);
viewHolder.button = (Button) rowView
.findViewById(R.id.logo);
rowView.setTag(viewHolder);
}
ViewHolder holder = (ViewHolder) rowView.getTag();
String s = values[position];
final int pos=position;
holder.text.setText(s);
holder.button.setOnClickListener(
new OnClickListener() {
public void onClick(View v) {
if(mp == null){
// mListView.invalidateViews();
mp = MediaPlayer.create(context,songs[pos]);
mp.start();
playing = true;
itemno = pos;
//Toast.makeText(context, "ist playing", Toast.LENGTH_LONG).show();
v.setBackgroundResource(R.drawable.ok);
}
else {
if(mp.isPlaying() && itemno == pos){
mp.pause();
playing = false;
v.setBackgroundResource(R.drawable.no);
}
else{
if(playing == false && itemno == pos){
mp.start();
playing = true;
v.setBackgroundResource(R.drawable.ok);
}
else {
mp.stop();
mp.release();
mp = MediaPlayer.create(context,songs[pos]);
mp.start();
playing = true;
itemno = pos;
//Toast.makeText(context, "playing", Toast.LENGTH_LONG).show();
v.setBackgroundResource(R.drawable.ok);
}if (!mp.isPlaying())
v.setBackgroundResource(R.drawable.no);
}
}
}
});
return rowView;
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public boolean isEnabled(int position) {
return false;
}
最佳答案
http://www.brightec.co.uk/blog/custom-android-media-controller
http://www.verious.com/tutorial/android-building-audio-player-tutorial/
您好，这可能会帮助您...通过这些链接找到解决方案。
关于android - 播放/停止按钮工作正常。但可绘制背景无法正常工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17691387/