android-使用EditText值到另一个活动的textview

Question

我需要的很简单。

1-用户在EditTexts上键入一些信息。

2-使用意图和捆绑将数据带到另一个活动

3-显示从EditTexts存储到TextViews的数据。

但是，这就是问题所在。 EditTexts位于MainActivity，将接收数据的活动不是下一个活动，而是最后一个活动，名为finalizar_relatorio.class。

而且，当我调用一个方法时，我试图将此捆绑发送到下一个活动，因为如果我在onCreate中使用startActivity（），它将在按下play后立即启动该活动。 我应该如何从方法中调用startActivity（）？

有4个数字EditText和一个char。

我应该使用哪个Bundle.putXX？

像char一样： Bundle.putString("VariableBeingCalledInNextActivity", variableThatStoresEditTextdata);

您能帮我指出我做错了什么吗？ 代码有点混乱，对此感到抱歉。

我在这里尝试过其他问题，但是我想我的问题是当我将EditText数据保存到Bundle中时

MainActivity（已更新）

package com.example.relatoriodeobras;

import android.content.Context;
import android.content.ContextWrapper;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Toast;

import java.io.File;

public class MainActivity extends AppCompatActivity {
public int tipo;
SharedPreferences dadosprocesso;
public static final String PREFERENCES = "MyPrefs" ;
public static final String processo    = "processo" ;
public static final String requerente  = "requerente" ;
public static final String portas      = "portas" ;
public static final String janelas     = "janelas" ;
public static final String unhab       = "unhab" ;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    final EditText editText4 = (EditText)findViewById(R.id.editText4);      
    final EditText editText5 = (EditText)findViewById(R.id.editText5);       
    final EditText editText6 = (EditText)findViewById(R.id.editText6);      
    final EditText editText7 = (EditText)findViewById(R.id.editText7);
    final EditText editText8 = (EditText)findViewById(R.id.editText8);


    Spinner dynamicSpinner = (Spinner) findViewById(R.id.dynamic_spinner);
    String[] items = new String[] { "Tipo de fiscalização","Alvará", "Habite-se" };
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_item, items);

    dynamicSpinner.setAdapter(adapter);
    dynamicSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view,
                                   int position, long id) {

            String processo1   = editText4.getText().toString();
            String requerente1 = editText5.getText().toString();
            String portas1     = editText6.getText().toString();
            String janelas1    = editText7.getText().toString();
            String unhab1      = editText8.getText().toString();

            dadosprocesso = getSharedPreferences(PREFERENCES, Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = dadosprocesso.edit();
            editor.putString(processo, processo1);
            editor.putString(requerente, requerente1);
            editor.putString(portas, portas1);
            editor.putString(janelas, janelas1);
            editor.putString(unhab, unhab1);
            editor.commit();

            Log.v("item", (String) parent.getItemAtPosition(position));
            boolean fieldsOK = validate(new EditText[]{editText4,editText5,editText6,editText7,editText8});
            if(fieldsOK) {
                switch (position) {
                    case 1:
                        tipo = 1;
                        Intent intent = new Intent(MainActivity.this, alvara.class);
                        startActivity(intent);
                        break;
                    case 2:
                        tipo = 2;
                        Intent intent1 = new Intent(MainActivity.this, habitese.class);
                        startActivity(intent1);
                        break;
                }
            }
        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {
            // TODO Auto-generated method stub
        }
    });
    obraFolder();
}

public void obraFolder(){   //Criar a pasta do projeto e o diretório em que os projetos estarão conditos, caso não tenha sido criado.
    EditText projectName = (EditText) findViewById(R.id.editText4);
    String obraName = projectName.getText().toString(); //obraName é a variável String que define o nome da pasta do projeto
    obraName = obraName.trim();
    File myInternalFile;

    String filepath = "Projetos" + obraName;
    String filename = obraName + ".txt";
    ContextWrapper contextWrapper = new ContextWrapper(getApplicationContext());
    File directory = contextWrapper.getDir(filepath, Context.MODE_PRIVATE);
    myInternalFile = new File(directory, filename);
}

private boolean validate(EditText[] fields){
    for(int i=0; i<fields.length; i++){
        EditText currentField=fields[i];
        if(currentField.getText().toString().length()<=0){
            Context context = getApplicationContext();
            CharSequence text = "Atenção! Exitem campos obrigatórios vazios!!";
            int duration = Toast.LENGTH_SHORT;

            Toast toast = Toast.makeText(context, text, duration);
            toast.show();
            //postDelayed
            return false;
        }
    }

    startActivity(dadosdaobra);
    return true;
}

}

finalizar_relatorio.java（更新）

package com.example.relatoriodeobras;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

public class finalizar_relatorio extends AppCompatActivity{
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_finalizar_relatorio);

      SharedPreferences dadosprocesso = getSharedPreferences("MyPrefs.xml", MODE_PRIVATE);
    String restoredtext = dadosprocesso.getString("text", null);
    if(restoredtext != null){
        String processo   = dadosprocesso.getString("processo", "processo");
        String requerente = dadosprocesso.getString("requerente", "requerente");
        String portas     = dadosprocesso.getString("portas", "portas");
        String janelas    = dadosprocesso.getString("janelas", "janelas");
        String unhab      = dadosprocesso.getString("unhab", "unhab");

        ((TextView)findViewById(R.id.textView18)).setText(processo);
        ((TextView)findViewById(R.id.textView20)).setText(requerente);
        ((TextView)findViewById(R.id.textView22)).setText(portas);
        ((TextView)findViewById(R.id.textView24)).setText(janelas);
        ((TextView)findViewById(R.id.textView26)).setText(unhab);

    }
}
}

Answer 1

我可能对您的问题感到困惑，但是如果您在onCreate中启动活动，请尝试在Overrided onResume()获取EditText值。

例如

protected void onResume() {
     String edittext4 = editText4.getText().toString();
     String edittext5 = editText5.getText().toString();
     String edittext6 = editText6.getText().toString();
     String edittext7 = editText7.getText().toString();
     String edittext8 = editText8.getText().toString();

     Intent dadosdaobra = new Intent(MainActivity.this, finalizar_relatorio.class);
Bundle dados = new Bundle();

     dados.putString("extra_processo", edittext5);
     dados.putString("extra_requerente", edittext4);
     dados.putString("extra_portas", edittext6);
     dados.putString("extra_janelas", edittext7);
     dados.putString("extra_unhab", edittext8);

     dadosdaobra.putExtras(dados);

     addSpinnerListeners();
}

private void addSpinnerListeners() {
      dynamicSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view,
                               int position, long id) {
             Log.v("item", (String) parent.getItemAtPosition(position));
             boolean fieldsOK = validate(new EditText[]   {editText4,editText5,editText6,editText7,editText8});
             if(fieldsOK) {
                 switch (position) {
                     case 1:
                        tipo = 1;
                         Intent intent = new Intent(MainActivity.this, alvara.class);
                         startActivity(intent);
                        break;
                     case 2:
                        tipo = 2;
                         Intent intent1 = new Intent(MainActivity.this, habitese.class);
                         startActivity(intent1);
                        break;
            }
        }
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {
        // TODO Auto-generated method stub
    }
});

Answer 2

为此使用共享首选项，以共享首选项保存数据并从中检索数据。

Answer 3

try This :-
Write this code in your main activity :-
public static final String KEY_PREFERNCE = "prefernce";
public static final String KEY_ID = "id";

SharedPrefernce shraedprefernce = MainActivity.this.getSharedPrefernce(KEY_PREFERNCE ,PRIVATEMODE);
SharedPrefernce.Editor editor = shraedprefernce.edit();
editor.putString(KEY_ID ,youredittext.getText.toString);
editor.commit;

the following code used in your last activity:-
SharedPrefernce shraedprefernce = YourActivity.this.getSharedPrefernce(MainActivity.KEY_PREFERNCE ,PRIVATEMODE);

String data = shraedprefernce.getString(MainActivity.KEY_ID,"");
yourTextView.setData(data);

Don't forget to commit the editor in your main activity.