Bilgi, görüntülemeden sonra kaydetmez Intents (android)

Question

Basit, 2-görünüm basketbol skorlama uygulamasında görünümler arasında geçiş yapmak için Intents kullanıyorum. İlk ve ana sayfa, skoru tutan sayfadır ve ikinci sayfa 5 oyuncu kadrosuna sahip olan ikinci sayfadır (5 EditTexts). Her şey çalışıyor, ancak skor ve dizilim, görünüm değiştirildikten sonra bilgilerini korumaz. Örneğin, skor 7-0 olarak ayarlanır, kullanıcı sıralama sayfasına gider ve oyuncu isimleri ile günceller, ardından kullanıcı skor tutma sayfasına geri döner ve skor 0-0 olur. Parçaların bunu çözebileceğini anlıyorum ama parçaları nasıl uygulayacağımı bilmiyorum (birkaç kez okudum bile olsa), bu yüzden bana verebileceğimiz en iyi yardım, değişmek zorunda olduğum şeyin spesifik bir örneği olacaktır. Kodum aşağıda yayınlandı ve yardım için çok teşekkür ederim. gibi Sandık yeni sınıfa

//////////MainActivity.java (score keeping view)////// 

package com.example.ryan.basketballscorekeeper; 

import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.ViewGroup; 
import android.content.Intent; 

public class MainActivity extends AppCompatActivity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

     setContentView(R.layout.activity_main); 

    Button lineupButton= (Button) findViewById(R.id.lineup_button); 

     lineupButton.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View view) { 
       Intent intent = new Intent(MainActivity.this,  Main2Activity.class); 
       startActivity(intent); 
      } 

     }); 
    TextView textView = (TextView) findViewById(R.id.homeTeamScore); 
    textView.setText(homeScore+""); 
    TextView textView2 = (TextView) findViewById(R.id.awayTeamScore); 
    textView.setText(awayScore+""); 



} 


int homeScore=0; //home team score 
int awayScore=0; //away team score 
String awayScoreString=awayScore+""; 
String homeScoreString=homeScore+""; 



public void onSaveInstanceState(Bundle savedInstanceState) { 
    super.onSaveInstanceState(savedInstanceState); 
} 

public void onRestoreInstanceState(Bundle savedInstanceState) { 
    super.onSaveInstanceState(savedInstanceState); 
} 

public void onStart(Bundle savedInstanceState){ 
    setContentView(R.layout.activity_main); 
    onRestoreInstanceState(savedInstanceState); 
} 

public void onPause (Bundle savedInstanceState){ 
    onSaveInstanceState(savedInstanceState); 
} 
public void onDestroy (Bundle savedInstanceState){ 
    onSaveInstanceState(savedInstanceState); 
} 

public void lineupsView(View view){ 
    Intent intent = new Intent(this, Main2Activity.class); 
    setContentView(R.layout.lineups); 

} 

public void mainView(View view){ 
    setContentView(R.layout.activity_main); 
} 

    ///////////////beginning of score-updating code//////////////// 

public void updateStrings(){ 
    homeScoreString=homeScore+""; 
    awayScoreString=awayScore+""; 
} 

public void threePointerAway(View view){ 
    TextView textView = (TextView) findViewById(R.id.awayTeamScore); 
    awayScore+=3; 
    updateStrings(); 
    textView.setText(awayScoreString); 
} 
public void threePointerHome(View view){ 
    TextView textView = (TextView) findViewById(R.id.homeTeamScore); 
    homeScore+=3; 
    updateStrings(); 
    textView.setText(homeScoreString); 
} 
public void twoPointerHome(View view){ 
    TextView textView = (TextView) findViewById(R.id.homeTeamScore); 
    homeScore+=2; 
    updateStrings(); 
    textView.setText(homeScoreString); 
} 
public void twoPointerAway(View view){ 
    TextView textView = (TextView) findViewById(R.id.awayTeamScore); 
    awayScore+=2; 
    updateStrings(); 
    textView.setText(awayScoreString); 
} 
public void freeThrowHome(View view){ 
    TextView textView = (TextView) findViewById(R.id.homeTeamScore); 
    homeScore+=1; 
    updateStrings(); 
    textView.setText(homeScoreString); 
} 
public void freeThrowAway(View view){ 
    TextView textView = (TextView) findViewById(R.id.awayTeamScore); 
    awayScore+=1; 
    updateStrings(); 
    textView.setText(awayScoreString); 
} 

public void reset(View view){ 
    TextView awayView = (TextView) findViewById(R.id.awayTeamScore); 
    TextView homeView = (TextView) findViewById(R.id.homeTeamScore); 
    homeScore=0; 
    awayScore=0; 
    updateStrings(); 
    awayView.setText(awayScoreString); 
    homeView.setText(homeScoreString); 
} 


} 
///////activity_main.xml (score keeping xml file)////// 

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout  xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context="com.example.ryan.basketballscorekeeper.MainActivity" 

>

<ImageView 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:src="@drawable/bballcourt" 
    android:scaleType="centerCrop" 
    /> 


<LinearLayout 

    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="horizontal" 
    > 
    <LinearLayout 
     android:layout_width="0dp" 
     android:layout_height="match_parent" 
     android:layout_weight="1" 
     android:layout_gravity="center" 
     android:orientation="vertical" 
     > 

     <TextView 
      android:textColor="#ffffff" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="Home Team" 
      android:layout_margin="10dp" 
      android:layout_gravity="center" 
      android:textSize="15dp" 
      /> 
     <TextView 
      android:textColor="#ffffff" 
      android:id="@+id/homeTeamScore" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="0" 
      android:textSize="50dp" 
      android:layout_gravity="center" 
      /> 
     <Button 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="+3 Points" 
      android:background="#ffbf80" 
      android:layout_gravity="center" 
      android:onClick="threePointerHome" 
      android:layout_marginTop="20dp" 
      android:textSize="20dp" 
      android:padding="10dp" 
      /> 
     <Button 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="+2 Points" 
      android:background="#ffbf80" 
      android:layout_gravity="center" 
      android:onClick="twoPointerHome" 
      android:layout_marginTop="20dp" 
      android:textSize="20dp" 
      android:padding="10dp" 
      /> 
     <Button 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="Free Throw" 
      android:background="#ffbf80" 
      android:layout_gravity="center" 
      android:onClick="freeThrowHome" 
      android:layout_marginTop="20dp" 
      android:textSize="17dp" 
      android:padding="10dp" 
      /> 
    </LinearLayout> 

    <View 
     android:layout_width="5dp" 
     android:layout_height="340dp" 
     android:background="#d9d9d9" 
     android:layout_marginTop="40dp" 

     /> 

    <LinearLayout 
     android:layout_width="0dp" 
     android:layout_height="match_parent" 
     android:layout_weight="1" 
     android:layout_gravity="center" 
     android:orientation="vertical" 
     > 

     <TextView 
      android:textColor="#ffffff" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="Away Team" 
      android:layout_margin="10dp" 
      android:layout_gravity="center" 
      android:textSize="15dp" 
      /> 
     <TextView 
      android:textColor="#ffffff" 
      android:id="@+id/awayTeamScore" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="0" 
      android:textSize="50dp" 
      android:layout_gravity="center" 
      /> 
     <Button 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="+3 Points" 
      android:background="#ffbf80" 
      android:layout_gravity="center" 
      android:onClick="threePointerAway" 
      android:layout_marginTop="20dp" 
      android:textSize="20dp" 
      android:padding="10dp" 
      /> 
     <Button 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="+2 Points" 
      android:background="#ffbf80" 
      android:layout_gravity="center" 
      android:onClick="twoPointerAway" 
      android:layout_marginTop="20dp" 
      android:textSize="20dp" 
      android:padding="10dp" 
      /> 
     <Button 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="Free Throw" 
      android:background="#ffbf80" 
      android:layout_gravity="center" 
      android:onClick="freeThrowAway" 
      android:layout_marginTop="20dp" 
      android:textSize="17dp" 
      android:padding="10dp" 
      /> 
    </LinearLayout> 

</LinearLayout> 

<Button 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="reset" 
    android:textAllCaps="true" 
    android:layout_centerHorizontal="true" 
    android:layout_alignParentBottom="true" 
    android:padding="15dp" 
    android:layout_marginBottom="40dp" 
    android:textSize="20dp" 
    android:background="#ffbf80" 
    android:onClick="reset" 

    /> 

<Button 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Lineups" 
    android:textAllCaps="true" 
    android:layout_alignParentRight="true" 
    android:layout_alignParentBottom="true" 
    android:padding="15dp" 
    android:layout_margin="10dp" 
    android:textSize="20dp" 
    android:background="#ff8000" 
    android:id="@+id/lineup_button" /> 

</RelativeLayout> 


///////Main2Activity.java (lineup view)////// 


    package com.example.ryan.basketballscorekeeper; 

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 

public class Main2Activity extends AppCompatActivity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main2); 

    Button mainButton= (Button) findViewById(R.id.main_button); 

    mainButton.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View view) { 
      Intent intent = new Intent(Main2Activity.this, MainActivity.class); 
      startActivity(intent); 
     } 

    }); 

    EditText editText1 = (EditText) findViewById(R.id.one); 
    one=editText1.getText().toString(); 
    EditText editText2 = (EditText) findViewById(R.id.two); 
    two=editText1.getText().toString(); 
    EditText editText3 = (EditText) findViewById(R.id.three); 
    three=editText1.getText().toString(); 
    EditText editText4 = (EditText) findViewById(R.id.four); 
    four=editText1.getText().toString(); 
    EditText editText5 = (EditText) findViewById(R.id.five); 
    five=editText1.getText().toString(); 

} 
String one,two,three,four,five; //this represents the five players 
} 

////////activity_main2.xml (lineup view xml file)/////// 
<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context="com.example.ryan.basketballscorekeeper.Main2Activity" 
android:orientation="vertical" 
> 

<RelativeLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 
    <ImageView 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:src="@drawable/bballcourt" 
     android:scaleType="centerCrop" 
     /> 

    <TextView 
     android:id="@+id/lineups" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textColor="#ffffff" 
     android:text="Lineups" 
     android:textSize="30dp" 
     android:padding="30dp" 
     /> 

    <EditText 
     android:textColor="#ffffff" 
     android:id="@+id/one" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:inputType="textNoSuggestions" 
     android:maxLines="1" 
     android:layout_below="@id/lineups" 
     /> 
    <EditText 
     android:textColor="#ffffff" 
     android:id="@+id/two" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:inputType="textNoSuggestions" 
     android:maxLines="1" 
     android:layout_below="@id/one" 
     /> 
    <EditText 
     android:textColor="#ffffff" 
     android:id="@+id/three" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:inputType="textNoSuggestions" 
     android:maxLines="1" 
     android:layout_below="@id/two" 
     /> 
    <EditText 
     android:textColor="#ffffff" 
     android:id="@+id/four" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:inputType="textNoSuggestions" 
     android:maxLines="1" 
     android:layout_below="@id/three" 
     /> 
    <EditText 
     android:textColor="#ffffff" 
     android:id="@+id/five" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:inputType="textNoSuggestions" 
     android:maxLines="1" 
     android:layout_below="@id/four" 
     /> 
    <Button 
     android:id="@+id/main_button" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Score" 
     android:textAllCaps="true" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentBottom="true" 
     android:padding="15dp" 
     android:layout_margin="10dp" 
     android:textSize="20dp" 
     android:background="#ff8000" 

     /> 
    </RelativeLayout> 

</LinearLayout> 

Answer 1

deneyin aşağıda

public class Puanı {

public static int homeScore = 0; // ev sahibi takım skoru

public static int awayScore = 0; // deplasman takımı

}

skor ve nerede o değişkenin repalce homeScore kullanırken hiç

homeScore -> Score.homeScore

awayScore -> Score.awayScore

ve Yerel puan değişkenlerini kaldırmak için AnaKonuluk

Metin görünümlerini onResume() yönteminde güncelleştirin