PopupWindow在android2.3不显示文字问题

private ListView mListView;

mListView = new ListView(this);

mListView.setAdapter(new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, arrayusername)); //修改后的默认样式

//mListView.setAdapter(new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_dropdown_item_1line, arrayusername)); //不能显示文字的样式

mListView.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view,

int position, long id) {

// TODO Auto-generated method stub

ATusername.setText(arrayusername[position]);

mPopup.dismiss();

}

});

int height = ViewGroup.LayoutParams.WRAP_CONTENT;

int width = ATusername.getWidth();

System.out.println(width);

mPopup = new PopupWindow(mListView, width, height, true);

mPopup.setOutsideTouchable(true);

mPopup.setBackgroundDrawable(getResources().getDrawable(R.drawable.background)); //set background image

mPopup.setOnDismissListener(new OnDismissListener() {

@Override

public void onDismiss() {

// TODO Auto-generated method stub

}

});

}

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原来是在设置ArrayAdapter中的默认样式时不兼容的问题 可能是~~~~