关于Android弹出多个对话框的问题

各位大侠好，项目要实现的效果是，先弹出设置密码的对话框，点击确定后，第一个对话框消失，弹出再次确认密码的对话框，可是总是报错

 java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()

下面是两个对话框的代码：

 //设置支付密码
    private void setPayPwd1Dlg(){
        AlertDialog.Builder builder = new AlertDialog.Builder(TransferActivity.this);
        builder.setTitle("请设置支付密码");
        builder.setView(et_payp);
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int which) {
                // TODO Auto-generated method stub
                dialog.dismiss();
                setPayPwd2Dlg(et_payp.getText().toString());
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int which) {
                // TODO Auto-generated method stub
                dialog.dismiss();
            }
        });
        builder.show();
    }
    //再次确认支付密码
    private void setPayPwd2Dlg(String paypwd){
        final String paypwd1 = paypwd;
        AlertDialog.Builder builder = new AlertDialog.Builder(TransferActivity.this);
        builder.setTitle("请再次输入支付密码");
        builder.setView(et_payp);
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int which) {
                // TODO Auto-generated method stub
                dialog.dismiss();
                if(et_payp.getText().toString().equals(paypwd1)){
                    new Thread(setPayPwd).start();
                }else {
                    Toast.makeText(getApplicationContext(), "两次密码不一致", Toast.LENGTH_SHORT).show();
                }
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int which) {
                // TODO Auto-generated method stub
                dialog.dismiss();
            }
        });
        builder.show();
    }

请问这个问题要怎么解决？

Can't create handler inside thread that has not called Looper.prepare()

在子线程中创建Handler之前，必须调用Looper.prepare()来创建Loopger对象

主线程中默认是有一个Looper对象的，所以可以直接创建Handler

dialog.dismiss();
Looper.prepare()
setPayPwd2Dlg(et_payp.getText().toString());

这样试下吧，这个是缺少loop，也可能是线程问题