錄音之后，不顯示listview怎么辦，麻煩大家?guī)兔匆幌?/h1>

public?class?RecorderAdapter?extends?ArrayAdapter<Recorder>
{

????private?int?mminItemwitdth;
????private?int?mmaxItemwitdth;

????private?LayoutInflater?minflater;



????public?RecorderAdapter(Context?context,?List<Recorder>datas)?{
????????super(context,?-1,datas);

????????minflater?=?LayoutInflater.from(context);

????????WindowManager?wm?=?(WindowManager)?context.getSystemService(Context.WINDOW_SERVICE);

????????DisplayMetrics?outMetrics?=?new?DisplayMetrics();
????????assert?wm?!=?null;
????????wm.getDefaultDisplay().getMetrics(outMetrics);

????????mmaxItemwitdth?=?(int)(outMetrics.widthPixels*0.7f);
????????mminItemwitdth?=?(int)(outMetrics.widthPixels*0.15f);
????}




????@Override
????public?View?getView(int?position,?View?convertView,??ViewGroup?parent)
????{
????????Viewholder?holder?;
????????if(convertView?==?null)
????????{
????????????convertView?=?minflater.inflate(R.layout.item_recorder,?parent,false);
????????????holder?=?new?Viewholder();
????????????holder.seconds?=?(TextView)convertView.findViewById(R.id.id_recorder_time);
????????????holder.length?=?convertView.findViewById(R.id.id_recorder_length);

????????????convertView.setTag(holder);

????????}
????????else?{
????????????holder?=?(Viewholder)?convertView.getTag();
????????}

????????holder.seconds.setText(Math.round(getItem(position).time)+"\"");
????????ViewGroup.LayoutParams?lp??=?holder.length.getLayoutParams();
????????lp.width?=?(int)(mminItemwitdth?+?(mmaxItemwitdth?/?60f?*?(getItem(position)).time));
????????return?convertView;
????}




????private?class?Viewholder
????{
????????TextView?seconds;
????????View?length;
????}
}