Android --- java.lang.RuntimeException: Can‘t create handler inside thread that has not called Loop

报错信息如下：

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

意思是无法在尚未调用的线程内创建处理程序 简单的说要在子线程里调用UI

错误代码展示：

AlertDialog.Builder builder = new AlertDialog.Builder(MyEnrollAssociationInfoActivity.this);
                        builder.setTitle("撤销");
                        builder.setMessage("您确定要撤销此社团吗？");
                        //确定
                        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                HttpUtils.getInstance().postMethod(BaseConfig.APP_ID+"/AssociationEnrollApp/deleteAssociation/"+associationEnrollId+"/"+ associationId, new HttpUtils.HttpListener() {
                                    @Override
                                    public void requestFinish(String response) {
                                        Result result = new Result();
                                        Type type = new TypeToken() {}.getType();//解决Gson解析时出现的bug
                                        result = new Gson().fromJson(response, type);
                                        Log.i("请求数据：",result.toString());
                                        if(result.getStatus().equals("200")) {
                                            JUtils.ToastInLoop("撤销成功!");
                                        }else {
                                            JUtils.ToastInLoop("撤销失败!");
                                        }
                                    }

                                    @Override
                                    public void requestError(Exception e) {

                                    }
                                });
                            }
                        });
                        //取消
                        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                Toast.makeText(MyEnrollAssociationInfoActivity.this,"已取消",Toast.LENGTH_LONG).show();
                            }
                        });
                        builder.create();
                        builder.show();

解决办法： 在对话框的外层加上MyEnrollAssociationInfoActivity.this.runOnUiThread

MyEnrollAssociationInfoActivity.this.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        AlertDialog.Builder builder = new AlertDialog.Builder(MyEnrollAssociationInfoActivity.this);
                        builder.setTitle("撤销");
                        builder.setMessage("您确定要撤销此社团吗？");
                        //确定
                        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                HttpUtils.getInstance().postMethod(BaseConfig.APP_ID+"/AssociationEnrollApp/deleteAssociation/"+associationEnrollId+"/"+ associationId, new HttpUtils.HttpListener() {
                                    @Override
                                    public void requestFinish(String response) {
                                        Result result = new Result();
                                        Type type = new TypeToken() {}.getType();//解决Gson解析时出现的bug
                                        result = new Gson().fromJson(response, type);
                                        Log.i("请求数据：",result.toString());
                                        if(result.getStatus().equals("200")) {
                                            JUtils.ToastInLoop("撤销成功!");
                                        }else {
                                            JUtils.ToastInLoop("撤销失败!");
                                        }
                                    }

                                    @Override
                                    public void requestError(Exception e) {

                                    }
                                });
                            }
                        });
                        //取消
                        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                Toast.makeText(MyEnrollAssociationInfoActivity.this,"已取消",Toast.LENGTH_LONG).show();
                            }
                        });
                        builder.create();
                        builder.show();
                    }
                });