如何將一個類的透明變量值轉換爲另一個類android

Question

您好我正在做一個應用程序here.user單擊按鈕一次意味着在另一個活動中我需要執行一個動作，用戶再次回到同一頁面agian單擊相同的按鈕意味着我需要執行不同的操作。我在活動1採取2個活動我有1個按鈕，我treid在activity1按鈕中使用一個計數變量按鈕單擊那次我遞增計數變量，使用putextra我將計數值轉換爲acticity2這裏根據計數我執行動作，但計數一次是隨着時間的推移，如果我回到相同的activty1然後我點擊按鈕，也計數是'1'，只是，它不是2 .so如何解決這個問題任何有想法的人建議我。

Activity1 .class: 
public class Activity1 extends Activity implements OnClickListener{ 
Button b1,b2; 
    int countk4=0; 

    SharedPreferences share; 
    String bol3; 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    setContentView(R.layout.home1); 
    b1=(Button)findViewById(R.id.button1); 
    b1.setOnClickListener(this); 
    } 

public void onClick(View v) { 
    // TODO Auto-generated method stub 
    if(v==b1) 
    { 
     countk4++; 
     share=getSharedPreferences("shared", MODE_WORLD_WRITEABLE); 
     SharedPreferences.Editor editor=share.edit(); 

     editor.putInt("roll", countk4); 

     editor.commit(); 

     show(); 
     Intent i=new Intent(Activity1 .this,Activity2.class); 
     i.putExtra("k", 1); 
     i.putExtra("k1", 13); 
     i.putExtra("ks", val1); 
     startActivity(i); 
    } 
} 
Integer val1,val2; 
private void show() { 
    // TODO Auto-generated method stub 
    share=getSharedPreferences("shared", MODE_WORLD_READABLE); 

    val1=share.getInt("roll",0); 

    } 
     } 

    Activity2 .class: 
    public class Activity2 extends Activity implements OnClickListener{ 
Button back; 
     int countkv; 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    setContentView(R.layout.home2); 
    back=(Button)findViewById(R.id.button1); 
    back.setOnClickListener(this); 
      countkv = getIntent().getIntExtra("ks", 0); 

    if(countkv =1) 
    { 
    Toast.makeText(getApplicationContext(), "hai.......i am first", Toast.LENGTH_LONG).show(); 
    } 

if(countkv =2) 
{ 
    Toast.makeText(getApplicationContext(), "hai.......1 am second", Toast.LENGTH_LONG).show(); 
    } 

    public void onClick(View v) { 
    // TODO Auto-generated method stub 
    if(v==back) 
    { 
     Intent i=new Intent(Activity2.this,Activity1.class); 


     startActivity(i); 
    } 


} 
} 
} 
but above every time first toast message displayed becz countkv is every time 1 only.. 

Answer 1

在收貨方作出Bundle的對象。

Bundle myBundle = new Bundle(); // Declare above 
    String temp; 

    myBundle = getIntent().getIntExtra(); 
    temp = myBundle.getString("ks"); // temp will have the val1. 

希望你能現在得到它。