progressbar.xml

全部代码

public class ThirdLoginLoadingDialog extends Dialog {    private TextView tv;    public ThirdLoginLoadingDialog(Context context) {        super(context, R.style.loadingDialogStyle);    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.layout_thirdlogin_dialog_loading);        tv = (TextView) this.findViewById(R.id.tv);        tv.setText("正在登录...");        LinearLayout linearLayout = (LinearLayout) this                .findViewById(R.id.LinearLayout);        linearLayout.getBackground().setAlpha(0);    }}

最后 在主活动中加上

private ThirdLoginLoadingDialog dialog;    dialog = new ThirdLoginLoadingDialog(this);

dialog.setCanceledOnTouchOutside(false);//防止触摸其他地方，程序报错

dialog.show();    dialog.dismiss();