实例图片:
String arr[] = new String[]{"省级非税", "广州市非税", "佛山市非税", "珠海市非税", "中山市非税", "汕头市非税", "梅州市非税", "东莞市非税", "肇庆市非税", "顺德市非税", "江门市非税"};
/** ----------------显示下拉框---------------- */
int index = 0;
AlertDialog dialog;
private void showDialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("选择城市");
builder.setSingleChoiceItems(arr, index, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (dialog != null) {
dialog.dismiss();
}
index = which;
tv_city.setText(arr[which]);//TextViww设置名字
}
});
dialog = builder.create();
dialog.show();
/**
* 显示在屏幕中中间
*/
WindowManager manager = getWindowManager();
Display d = manager.getDefaultDisplay();
Window window = dialog.getWindow();
WindowManager.LayoutParams params = window.getAttributes();
params.height = (int) (d.getHeight() * 0.5);
params.gravity = Gravity.CENTER_HORIZONTAL;
dialog.getWindow().setAttributes(params);
}