AlertDialog对话框自定义大小,加载网络请求,点击不消失

public Dialog onCreateDialog(Context context) {
LayoutInflater inflater = getLayoutInflater();
View linearlayout = inflater.inflate(R.layout.dialog_net, null);
AlertDialog.Builder builder=   new AlertDialog.Builder(context);
builder.setCancelable(false);
Dialog  dialog = builder.show();
dialog.setContentView(linearlayout);// setcontentView 不是setview
return dialog;
}

Dialog dialog = onCreateDialog(this);
//                dialog.dismiss();
WindowManager m = getWindowManager();
Display d = m.getDefaultDisplay();  //为获取屏幕宽、高
WindowManager.LayoutParams params = dialog.getWindow().getAttributes();
//                params.width = (int) (d.getHeight() * 0.4);
//                params.height = (int) (d.getWidth() * 0.4);
params.width = 600;
params.height = 600;
dialog.getWindow().setAttributes(params);     //设置生效  dialog.show();一定要放在dialog.getWindow().setLayout(300, 200);的前面，否则不起作用。