Settext returning to null

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When I open my activity the first time, all settexts are null, the second time it works normally, what’s wrong?

Activity of the settext ..

    autor = (TextView) findViewById(R.id.tv1);
    editora = (TextView) findViewById(R.id.tv2);
    isbntv = (TextView) findViewById(R.id.tv3);
    paginas = (TextView) findViewById(R.id.tv4);
    edicao = (TextView) findViewById(R.id.tv5);
    ano = (TextView) findViewById(R.id.tv6);
    idioma = (TextView) findViewById(R.id.tv7);
    infliv = (TextView) findViewById(R.id.tv9);
    imageView = (ImageView) findViewById(R.id.imageView2);
    buy = (Button) findViewById(R.id.buttonbuy);
    id = (TextView) findViewById(R.id.id_user);
    valor = (TextView) findViewById(R.id.preço1);

    Intent intent = getIntent();

    mIsbn = intent.getStringExtra("mIsbn");
    mDesc = intent.getStringExtra("mDesc");
    mAut = intent.getStringExtra("mAut");
    mVl_anun = intent.getStringExtra("mVl_anun");
    mAno = intent.getStringExtra("mAno");
    mImg = intent.getStringExtra("mImg");
    mEdic = intent.getStringExtra("mEdic");
    mIdi = intent.getStringExtra("mIdi");
    mPag = intent.getStringExtra("mPag");
    medicao = intent.getStringExtra("mEd");

    autor.setText(mAut);
    editora.setText(mEdic);
    isbntv.setText(mIsbn);
    paginas.setText(mPag);
    edicao.setText(medicao);
    ano.setText(mAno);
    idioma.setText(mIdi);
    infliv.setText(mDesc);
    valor.setText(mVl_anun);

Activity that passes the text object ..

 final ListView listViewLivros = (ListView) findViewById(R.id.lista_livros);



    ListaLivroAdapter adapter = new ListaLivroAdapter(listaLivros, this);


    listViewLivros.setAdapter(adapter);


    listViewLivros.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {


            c = (TextView) view.findViewById(R.id.lista_livro_descricao);
            idliv_select = c.getText().toString();

            postId("http://xxxxxxxxxx/api/v2/bookdemo/_table/cad_livro?fields=qt_pag%2Cisbn%2Cano%2Cid_ed%2Cdexxxxxxxxxx_ed%2Cid_aut%2Cid_idi&filter=id_liv%20%3D%20"+idliv_select, 2);
            Intent myIntent = new Intent(view.getContext(), ActivityCompra.class);
            myIntent.putExtra("mIsbn",ISBN);
            myIntent.putExtra("mDesc",desc);
            myIntent.putExtra("mAut",autor);
            myIntent.putExtra("mVl_anun",vl_anuncio);
            myIntent.putExtra("mAno",ano);
            myIntent.putExtra("mImg",img);
            myIntent.putExtra("mEdic",edicao);
            myIntent.putExtra("mIdi",idioma);
            myIntent.putExtra("mPag",paglivro);
            myIntent.putExtra("mEd",medicao);
            startActivityForResult(myIntent, 2);
        }

    });


}

Post id :

  private void postId(String url, int seq) {
    HttpConnectionListBooks postId = new HttpConnectionListBooks(ListViewLivrosActivity.this, desc, url, seq);
    postId.execute();


}
java android

  • What does this postid method?

  • Make a get of the putExtra objects..

  • You are not making any asynchronous requests in this method?

  • No, I just put it under private void postid(String url, int seq) { Httpconnectionlistbooks postid = new Httpconnectionlistbooks(Listviewlivrosactivity.this, desc, url, seq); postid.execute(); }

  • If you’re using HTTP, then maybe you are. If you put Intent into this method, it’s no longer a problem. If you want to edit the question and put the content of the method, it might be easier to figure out the problem.

  • Edition made, sir..

  • What happens is that the method executes in the background, so the values are not assigned. The reason to run only the second time is that when you return, the values have already been loaded

  • Unfortunately I will have to ask what has in Httpconnectionlistbooks ... huehuhe is that there is no way to reproduce the error here because it does not have all the necessary information. = D

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1 answer

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I think you could use this because I’m using this

Bundle extras = getIntent().getExtras();
        if (extras != null) {
    mIsbn = intent.getStringExtra("mIsbn");
    mDesc = intent.getString("mDesc");
    mAut = intent.getString("mAut");
    mVl_anun = intent.getString("mVl_anun");
    mAno = intent.getString("mAno");
    mImg = intent.getString("mImg");
    mEdic = intent.getString("mEdic");
    mIdi = intent.getString("mIdi");
    mPag = intent.getString("mPag");
    medicao = intent.getString("mEd")
        }

autor.setText(mAut);
editora.setText(mEdic);
isbntv.setText(mIsbn);
paginas.setText(mPag);
edicao.setText(medicao);
ano.setText(mAno);
idioma.setText(mIdi);
infliv.setText(mDesc);
valor.setText(mVl_anun);

I think this way it will work because, I’m doing the same in a project and it’s all right :D

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