从另一个活动更改TextView

Question

我需要的是我在EditText campomperesa和camporesponsavel上写的东西，我需要在DiagnosticoActivity上显示，但程序显示为null或什么都不显示。我正在使用Firebase数据库，有其他方法吗？

第一个活动

@Override
public void onClick(View v) {
String textoequipe = campoequipe.getText().toString();
String textoempresa = campoempresa.getText().toString();
String textosetor = camposetor.getText().toString();
String textoresponsavel = camporesponsavel.getText().toString();

Intent myintent = new Intent(NovoActivity.this, DiagnosticoActivity.class);
Bundle bundle = getIntent().getExtras();
Bundle.getString("campoempresa", textoempresa);
Bundle.getString("camporesponsavel", textoresponsavel);
startActivity(myintent);

if ( !textoequipe.isEmpty()){
if ( !textoempresa.isEmpty()){
if ( !textosetor.isEmpty()){
if ( !textoresponsavel.isEmpty()){
informações = new Informações();
informações.setEquipe( textoequipe );
informações.setEmpresa( textoempresa );
informações.setSetor( textosetor );
informações.setResponsavel( textoresponsavel );
informações.salvar();

第二活动

public class DiagnosticoActivity extends AppCompatActivity {
private Button btbloco;
private Button btanotacoes;
private Button btfotos;
private ImageButton btvnovo;
private ImageButton btvfinalizar;
private TextView EmpresaResponsavel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_diagnostico);


EmpresaResponsavel = findViewById(R.id.EmpresaResponsavel);
Intent myintent = getIntent();
String textoempresa = myintent.getStringExtra("campoempresa");
String textoresponsavel = myintent.getStringExtra("camporesponsavel");
EmpresaResponsavel.setText(textoempresa + " - " + textoresponsavel);

Answer 1

启动活动：

startActivity(new Intent(CurrentActivity.this, AnotherActivity.class).putExtra("campoempresa", textoempresa).putExtra("camporesponsave1", textoresponsave1));

检索值：

Intent i = getIntent();
String v1 = i.getStringExtra("campoempresa");
String v2 = i.getStringExtra("camporesponsave1");

Answer 2

我可以看到你有两个问题。。。

在第一个活动中，使用Bundle-Bundle=getIntent((.getExtra("Bundle"(来检索Bundle，然后使用Bundle.getString("campomperesa"(来获取字符串的值。。。

在第二个活动中，您没有将捆绑包附加到意图。。。

使用myIntent.putExtra(捆绑包(

创建捆绑包并启动活动：

Intent myIntent = new Intent(this, DiagnosticsoActivity.class);
Bundle bundle = new Bundle();
bundle.putString("campoempresa", textoempresa);
bundle.putString("camporesponsave1", textoresponsave1);
myIntent.putExtra("bundle", bundle);
startActivity(myIntent);

检索活动中的捆绑包：

Bundle bundle = getIntent().getExtra("bundle");
String textoempresa = bundle.getString("campoempresa");
String textoresponsave1 = bundle.getString("camporesponsave1")