如何在Android中的类/活动之间传递值数据? [英] how to pass value data between classes/activity in Android?

问题描述

例如，我有活动1，活动2，活动3，最后还有valueAllActivity?如何将数据从activity1，activity2，activity3传递到-> valueAllActivity?

For example i have activity1, activity2, activity3 and lastly valueAllActivity? how do I pass the data from activity1, activity2, activity3 to --> valueAllActivity?

将每个活动中的INT值传递给valueAllActivity.

to pass INT value in each activity to valueAllActivity.

我在开发Android程序方面非常陌生，因此如果有人可以指导，那将是一种荣幸:)谢谢

I am very new in developing Android program, so if anyone could guide, it would be an honor :) Thank you

//Activity1

//Activity1

package lynn.calculate.KaunterKalori;

import lynn.calculate.KaunterKalori.R;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.content.Intent;

public class Breakfast extends Activity {
public static int TotalKalori;



ArrayAdapter<String> FoodType1Adapter;
ArrayAdapter<String> DrinkType1Adapter;
String FoodTypeArray[] = { "","white bread"}
int[] valueFoodTypeArray = { 0,20};
String[] DrinkTypeArray = { "","tea"};
int[] valueDrinkTypeArray = { 0,201};

Spinner FoodTypeSpinner;
Spinner DrinkTypeSpinner;
TextView SarapanTotalKalori;

public void onCreate(Bundle savedInstancesState) {
    super.onCreate(savedInstancesState);
    setContentView(R.layout.breakfast);

    FoodTypeSpinner = (Spinner) findViewById(R.id.spinner1);
    DrinkTypeSpinner = (Spinner) findViewById(R.id.spinner2);
    SarapanTotalKalori = (TextView) findViewById(R.id.JumlahKalori);

    initializeSpinnerAdapters();
    // load the default values for the spinners
    loadFoodValue1Range();
    loadDrinkValue1Range();

}

// nk handle button --> refer calculate button
public void calculateClickHandler(View view) {
    if (view.getId() == R.id.button1) {

        // nk bace dkat spinner
        int food1 = getSelectedFood();
        int drink1 = getSelectedDrink();

        // kira kalori sarapan
        // view kalori sarapan

        int totalKalori1 = calculateSarapan(food1, drink1);
        SarapanTotalKalori.setText(totalKalori1 + "");

        //setttlBreakfast(totalKalori1);
        Intent b= new Intent(Breakfast.this, Lunch.class);
        b.putExtra("totalBreakfast",totalKalori1);
        Breakfast.this.startActivity(b);


        }
    }


public int getSelectedFood() {
    String selectedFoodValue = (String) FoodTypeSpinner.getSelectedItem();
    int index = 0;

    for (int i = 0; i < FoodTypeArray.length; i++) {
        if (selectedFoodValue.equals(FoodTypeArray[i])) {
            index = i;
            break;
        }
    }
    return valueFoodTypeArray[index];
}

public int getSelectedDrink() {
    String selectedDrinkValue = (String) DrinkTypeSpinner.getSelectedItem();
    int index = 0;
    for (int i = 0; i < DrinkTypeArray.length; i++) {
        if (selectedDrinkValue.equals(DrinkTypeArray[i])) {
            index = i;
            break;
        }
    }
    return valueDrinkTypeArray[index];

}

public int calculateSarapan(int food1, int drink1) {
    return (int) (food1 + drink1);
}

public void loadFoodValue1Range() {
    FoodTypeSpinner.setAdapter(FoodType1Adapter);
    // set makanan b4 pilih
    FoodTypeSpinner.setSelection(FoodType1Adapter.getPosition("400"));

}

public void loadDrinkValue1Range() {
    DrinkTypeSpinner.setAdapter(DrinkType1Adapter);
    DrinkTypeSpinner.setSelection(DrinkType1Adapter.getPosition("77"));
}

public void initializeSpinnerAdapters() {

    FoodType1Adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_item, FoodTypeArray);

    DrinkType1Adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_item, DrinkTypeArray);

}
}

//Acitivity 2

//Acitivity 2

package lynn.calculate.KaunterKalori;

import lynn.calculate.KaunterKalori.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

public class Lunch extends Activity {
public static int TotalKalori;
private int totalKalori1;
/* private int ttlLunch;

public void setttlLunch(int ttlLunch){
    this.ttlLunch=ttlLunch;
}
public int getttlLunch(){
    return ttlLunch;
} */

ArrayAdapter<String> FoodType2Adapter;
ArrayAdapter<String> DrinkType2Adapter;
ArrayAdapter<String> LaukType2Adapter;

String FoodType2Array[] = { "","Burger"};
int[] valueFoodType2Array = { 0, 150 };
String DrinkType2Array[] = { "","Pepsi" };
int[] valueDrinkType2Array = { 0,100 };
String LaukType2Array[] = { "","Wings" };
int[] valueLaukType2Array = { 0,200 };

Spinner FoodType2Spinner;
Spinner DrinkType2Spinner;
Spinner LaukType2Spinner;
TextView LunchTotalKalori;

protected void onCreate(Bundle savedInstancesState) {
    super.onCreate(savedInstancesState);
    setContentView(R.layout.lunch);

    FoodType2Spinner = (Spinner) findViewById(R.id.spinner1);
    LaukType2Spinner = (Spinner) findViewById(R.id.spinner2);
    DrinkType2Spinner = (Spinner) findViewById(R.id.spinner3);
    LunchTotalKalori = (TextView) findViewById(R.id.JumlahKalori);

    initializeSpinnerAdapters();

    loadFoodValue2Range();
    loadDrinkValue2Range();
    loadLaukValue2Range();

}

public void calculateClickHandler(View view) {
    if (view.getId() == R.id.button1) {

        int food2 = getSelectedFood2();
        int drink2 = getSelectedDrink2();
        int lauk2 = getSelectedLauk2();


        int totalKalori2 = calculateLunch(food2, drink2, lauk2);
        LunchTotalKalori.setText(totalKalori2 + "");
        Bundle extras = getIntent().getExtras();
        if (extras != null){
            totalKalori1 = extras.getInt("totalBreakfast");
            totalKalori2 = extras.getInt("totalLunch");
        }
        //setttlLunch(totalKalori2);

        Intent n= new Intent(Lunch.this, Dinner.class);
        n.putExtra("totalBreakfast", totalKalori1);
        n.putExtra("totalLunch", totalKalori2);
        Lunch.this.startActivity(n);




    }
}

public int getSelectedFood2() {
    String selectedFoodValue2 = (String) FoodType2Spinner.getSelectedItem();
    int index = 0;

    for (int i = 0; i < FoodType2Array.length; i++) {
        if (selectedFoodValue2.equals(FoodType2Array[i])) {
            index = i;
            break;
        }
    }

    return valueFoodType2Array[index];

}

public int getSelectedDrink2() {
    String selectedDrinkValue2 = (String) DrinkType2Spinner
            .getSelectedItem();
    int index = 0;

    for (int i = 0; i < DrinkType2Array.length; i++) {
        if (selectedDrinkValue2.equals(DrinkType2Array[i])) {

            index = i;
            break;
        }
    }

    return valueDrinkType2Array[index];
}

public int getSelectedLauk2() {
    String selectedLaukValue2 = (String) LaukType2Spinner.getSelectedItem();
    int index = 0;

    for (int i = 0; i < LaukType2Array.length; i++) {
        if (selectedLaukValue2.equals(LaukType2Array[i])) {

            index = i;
            break;
        }
    }

    return valueLaukType2Array[index];
}

public int calculateLunch(double food2, double drink2, double lauk2) {
    return (int) (food2 + drink2 + lauk2);
}


public void loadFoodValue2Range(){
    FoodType2Spinner.setAdapter(FoodType2Adapter);
    FoodType2Spinner.setSelection(FoodType2Adapter.getPosition("200"));
}

public void loadDrinkValue2Range(){
    DrinkType2Spinner.setAdapter(DrinkType2Adapter);
    DrinkType2Spinner.setSelection(DrinkType2Adapter.getPosition("77"));
}

public void loadLaukValue2Range(){
    LaukType2Spinner.setAdapter(LaukType2Adapter);
    LaukType2Spinner.setSelection(LaukType2Adapter.getPosition("2"));
}

public void initializeSpinnerAdapters(){

    FoodType2Adapter = new ArrayAdapter<String>(this, 
            android.R.layout.simple_spinner_item, FoodType2Array);

    DrinkType2Adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_item, DrinkType2Array);

    LaukType2Adapter = new ArrayAdapter<String>(this, 
            android.R.layout.simple_spinner_item, LaukType2Array);
}

}

//活动3

package lynn.calculate.KaunterKalori;

import lynn.calculate.KaunterKalori.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

public class Dinner extends Activity {
public static int TotalKalori;
private int totalKalori1;
private int totalKalori2;
/*private int ttlDinner;

public void setttlDinner(int ttlDinner){
    this.ttlDinner=ttlDinner;
}
public int getttlDinner(){
    return ttlDinner;
} */

ArrayAdapter<String> FoodType3Adapter;
ArrayAdapter<String> ProteinType3Adapter;
ArrayAdapter<String> DrinkType3Adapter;

String FoodType3Array[] = { "","chicken chop" };
int[] valueFoodType3Array = { 0, 204};
String ProteinType3Array[] = { "","chicken breast",  };
int[] valueProteinType3Array = { 0, 40 };
String DrinkType3Array[] = { "","mineral water" };
int[] valueDrinkType3Array = { 0, 0};

Spinner FoodType3Spinner;
Spinner ProteinType3Spinner;
Spinner DrinkType3Spinner;
TextView DinnerTotalKalori;

protected void onCreate(Bundle savedInstancesState) {
    super.onCreate(savedInstancesState);
    setContentView(R.layout.dinner);

    FoodType3Spinner = (Spinner) findViewById(R.id.spinner1);
    ProteinType3Spinner = (Spinner) findViewById(R.id.spinner2);
    DrinkType3Spinner = (Spinner) findViewById(R.id.spinner3);
    DinnerTotalKalori = (TextView) findViewById(R.id.JumlahKalori);

    initializeSpinnerAdapters();

    loadFoodValue3Range();
    loadProteinValue3Range();
    loadDrinkValue3Range();

}

public void calculateClickHandler(View view) {
    if (view.getId() == R.id.button1) {

        int food3 = getSelectedFood3();
        int protein3 = getSelectedProtein3();
        int drink3 = getSelectedDrink3();

        int totalKalori3 = calculateDinner(food3, protein3, drink3);
        DinnerTotalKalori.setText(totalKalori3 + "");
        Bundle extras = getIntent().getExtras();
        if (extras != null){
            totalKalori1 = extras.getInt("totalBreakfast");
            totalKalori2 = extras.getInt("totalLunch");
            totalKalori3 = extras.getInt("totalDinner");
        }
        //setttlDinner(totalKalori3);
        Intent d= new Intent(Dinner.this, CalculateAll.class);
        d.putExtra("totalBreakfast", totalKalori1);
        d.putExtra("totalLunch", totalKalori2);
        d.putExtra("totalDinner", totalKalori3);
        startActivity(d);



    }

}

public int getSelectedFood3() {
    String selectedFoodValue3 = (String) FoodType3Spinner.getSelectedItem();

    int index = 0;

    for (int i = 0; i < FoodType3Array.length; i++) {
        if (selectedFoodValue3.equals(FoodType3Array[i])) {

        index = i;
        break;

        }

    }

    return valueFoodType3Array[index];

}

public int getSelectedProtein3() {
    String selectedProteinValue3 = (String) ProteinType3Spinner
            .getSelectedItem();
    int index = 0;

    for (int i = 0; i < ProteinType3Array.length; i++) {
        if (selectedProteinValue3.equals(ProteinType3Array[i])) {

            index = i;
            break;
        }
    }

    return valueProteinType3Array[index];
}

public int getSelectedDrink3() {
    String selectedDrinkValue3 = (String) DrinkType3Spinner
            .getSelectedItem();

    int index = 0;

    for (int i = 0; i < DrinkType3Array.length; i++) {
        if (selectedDrinkValue3.equals(DrinkType3Array[i])) {
            index = i;
            break;
        }
    }

    return valueDrinkType3Array[index];
}

public int calculateDinner(int food3, int protein3, int drink3) {
    return (int) (food3 + protein3 + drink3);
}

public void loadFoodValue3Range() {
    FoodType3Spinner.setAdapter(FoodType3Adapter);
    FoodType3Spinner.setSelection(FoodType3Adapter.getPosition("10"));
}

public void loadProteinValue3Range() {
    ProteinType3Spinner.setAdapter(ProteinType3Adapter);
    ProteinType3Spinner.setSelection(ProteinType3Adapter.getPosition("99"));
}
public void loadDrinkValue3Range(){
    DrinkType3Spinner.setAdapter(DrinkType3Adapter);
    DrinkType3Spinner.setSelection(DrinkType3Adapter.getPosition("10"));
}

public void initializeSpinnerAdapters(){

    FoodType3Adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, FoodType3Array);

    ProteinType3Adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, ProteinType3Array);

    DrinkType3Adapter = new ArrayAdapter<String>(this,     android.R.layout.simple_spinner_item, DrinkType3Array);



}

}

//CalulateAllActivity-我要在其中加总所有值(int)

// CalulateAllActivity - where I want to add up all the value (int)

package lynn.calculate.KaunterKalori;

import lynn.calculate.KaunterKalori.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

public class CalculateAll extends Activity {

public static int TotalKalori;
private int totalKalori1;
private int totalKalori2;
private int totalKalori3;



ArrayAdapter<String> SexTypeAdapter;
String SexTypeArray[] = { "Lelaki", "Perempuan" };

Spinner SexTypeSpinner;
TextView TotalKaloriSehari;
TextView totalsarapan;


    public CalculateAll() {

}

@Override
public void onCreate(Bundle savedInstancesState) {
    super.onCreate(savedInstancesState);
    setContentView(R.layout.calculate_all);

    SexTypeSpinner = (Spinner) findViewById(R.id.spinnerSex);
    TotalKaloriSehari = (TextView) findViewById(R.id.JumlahKalori);



}

public void calculateClickHandler(View view) {
    if (view.getId() == R.id.buttonKiraAll) {
    //  public final int TotalKalori;

        Bundle extras = getIntent().getExtras();
        if (extras != null){
            totalKalori1 = extras.getInt("totalBreakfast");
            totalKalori2 = extras.getInt("totalLunch");
            totalKalori3 = extras.getInt("totalDinner");
        }
        //setttlLunch(totalKalori2);

        Intent n= new Intent(this, CalculateAll.class);
        n.putExtra("totalBreakfast", totalKalori1);
        n.putExtra("totalLunch", totalKalori2);
        n.putExtra("totalDinner", totalKalori3);
        startActivity(n);


        int TotalKalori = calculateTotalKalori(totalKalori1, totalKalori2, totalKalori3);
        TotalKaloriSehari.setText(TotalKalori+ "");

        // int ttlCAl =getttlBreakfast()+getttlLunch()+getttlDinner();
        //String finalString = Integer.toString(calcAll());
        //TextView tv1 = (TextView) findViewById(R.id.JumlahKalori);
        //tv1.setText(finalString);


    }

}

 public int calculateTotalKalori(int totalKalori1, int totalKalori2,
int totalKalori3) {
 return (int) (totalKalori1 + totalKalori2 + totalKalori3);

}


}

感谢任何试图帮助我的人.非常感谢:)如您所知，我在开发程序的初期，非常感谢大家:)

thank you anyone who try to help me. much appreciated :) as you know, I on my early stage developing the program, so thank you very much everyone :)

推荐答案

您可以通过意图来实现.假设data1和data 2是Strings，而data3是int.

You would do it via intents. Assume data1 and data 2 are Strings and data3 is an int.

在您的第一个活动中，您设置了调用下一个活动的意图:

In your first activity when you set the intent to call the next activity:

Intent myIntent = new Intent(Activity1.this, Activity2.class);
myIntent.putExtra("Data1", data1);
myIntent.putExtra("Data2", data2);
myIntent.putExtra("Data3", data3);
Activity1.this.startActivity(myIntent);

然后参加活动2:

Private String data1;
Private String data2;
Private int data3;

Bundle extras = getIntent().getExtras();
if (extras != null) {
    data1 = extras.getString("Data1");
    data2 = extras.getString("Data2");
    data3 = extras.getInt("Data3");
}
// other code
Intent myIntent = new Intent(Activity2.this, Activity3.class);
myIntent.putExtra("Data1", data1);
myIntent.putExtra("Data2", data2);
myIntent.putExtra("Data3", data3);
Activity2.this.startActivity(myIntent);

依此类推，根据需要进行尽可能多的活动.

And so on, through as many activities as you want.

您可以使用任何所需的标识符.上面我使用了Data1，Data2，Data3.它们也可以称为Make，Model和TopSpeed.只要您使用与放置数据时相同的ID来获取数据，就可以了.

You can Use any identifier you want. Above I used Data1, Data2, Data3. They could have as well been called Make, Model and TopSpeed. As long as you use the same id to get the data as you use to put it, it'll be fine.

编辑

我看到的几件事...

Several things I see...

首先，使用 getExtra 从onCreate方法的捆绑包中获取每个活动的数据.将意图放在需要的地方调用下一个活动.

First, use the getExtra to get the data out of the bundle in your onCreate method for each activity. Put the intents to call the next activity wherever you need to.

然后，您的问题之一在活动2中出现:

Then, one of your issues is here in activity 2:

    if (extras != null){ 
        totalKalori1 = extras.getInt("totalBreakfast"); 
        totalKalori2 = extras.getInt("totalLunch"); 
    } 

您尚未将 totalLunch 放入捆绑包中，因此您不应该尝试获取.删除该行.

You haven't put totalLunch into the bundle yet, so you shouldn't be trying to get it yet. Delete that line.

活动3:

    if (extras != null){    
        totalKalori1 = extras.getInt("totalBreakfast");    
        totalKalori2 = extras.getInt("totalLunch");    
        totalKalori3 = extras.getInt("totalDinner");    
    }    

您尚未将 totalDinner 放入捆绑包中，因此您不应该尝试 get .删除该行.

You haven't put totalDinner into the bundle yet, so you shouldn't be trying to get it yet. Delete that line.

然后在全部计算中设置不必要的意图并重新启动活动...在我看来，这将导致无限循环:

Then in Calculate All you set an unnecessary intent and restart the activity... which looks to me like it would result in an infintie loop:

    Intent n= new Intent(this, CalculateAll.class);         
    n.putExtra("totalBreakfast", totalKalori1);         
    n.putExtra("totalLunch", totalKalori2);         
    n.putExtra("totalDinner", totalKalori3);         
    startActivity(n); 

从"CalculateAll"活动中删除整个部分.

Delete this whole section from the 'CalculateAll` activity.

我认为移动 getExtra 部分并删除不良数据将解决您的问题.

I think moving the getExtra parts and removing the bad data will fix your issue.

这篇关于如何在Android中的类/活动之间传递值数据?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！