如果textview为空，如何启动活动？

Question

在下面给出的代码中，我基本上使用了get（）方法，并在文本视图中显示数据，如果文本视图为空，我想启动另一个活动，我尝试了许多选项，但都不起作用。

Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(url)
                .addConverterFactory(GsonConverterFactory.create())
                .build();

Map<String, String> params = new HashMap<String, String>();
params.put("Content-Type", "application/json");
SharedPreferences p = getActivity().getSharedPreferences("secret", Context.MODE_PRIVATE);
String token = p.getString("token", "");
params.put("Authorization", "Token " + token);


PlaceHolderApi placeHolderApi = retrofit.create(PlaceHolderApi.class);
        Call<List<profileDetails>> call=placeHolderApi.getDetails(params);
        call.enqueue(new Callback<List<profileDetails>>() {
            @Override
            public void onResponse(Call<List<profileDetails>> call, Response<List<profileDetails>> response) {
                List<profileDetails> data=response.body();
                for (int i=0; i<data.size();i++){
                    name.append(""+data.get(i).getFullname());

                    age.append(""+data.get(i).getAge());

                    address.append("Address: "+data.get(i).getLocation());

                    gender.append("Gender: "+data.get(i).getGender());

                    num.append("Number: "+data.get(i).getPhone_number());

                    uId.append("Id: "+data.get(i).getId());

                    RoomId = Integer.parseInt(data.get(i).getId());}

            }

            @Override
            public void onFailure(Call<List<profileDetails>> call, Throwable t) {
                Log.e("kk","lal"+t);
                Toast.makeText(getContext(),"Error Cause : "+t,Toast.LENGTH_LONG).show();
            }
        });
    }

Answer 1

现在还不清楚您已经尝试了什么，但让我给您一个简单的解决方案，您可以通过

you_textview.setText("your text from server")

if(your_textview.getText().toString().isEmpty())
{
  startActivity(new Intent(this,MainActivity.class));  
}