Android 如何从活动堆栈中删除活动数

我有四个活动（A、B、C、D），序列可以是任何类似的（取决于运行时的需求）

类A的代码如下所示，我们从服务器api响应中获取活动名称，并将其传递给公共类以移动到另一个活动-

class A extends Activity{

   // Other Code of Activity 

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);


    onBackPressed(){

        // What will be the code to move back according to number of back count
    }
}

类B的代码如下所示，我们从服务器api响应中获取活动名称，并将其传递给公共类以移动到另一个活动-

class B extends Activity{

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }
}

 class C extends Activity{

    // Other Code of Activity 


    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }

}

 class D extends Activity{

   // Other Code of Activity     

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }

}

 class Move {

     Context con;
     public Move(Context con){
           this.con = con;
      }


     public void go(String activityname)
     {

         Intent i = new Intent(con, activityname.class)
         this.con.startActivity(i);   

     }
}

类B的代码如下所示，我们从服务器api响应中获取活动名称，并将其传递给公共类以移动到另一个活动-

class B extends Activity{

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }
}

 class C extends Activity{

    // Other Code of Activity 


    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }

}

 class D extends Activity{

   // Other Code of Activity     

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }

}

 class Move {

     Context con;
     public Move(Context con){
           this.con = con;
      }


     public void go(String activityname)
     {

         Intent i = new Intent(con, activityname.class)
         this.con.startActivity(i);   

     }
}

类B的代码如下所示，我们从服务器api响应中获取活动名称，并将其传递给公共类以移动到另一个活动-

class B extends Activity{

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }
}

 class C extends Activity{

    // Other Code of Activity 


    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }

}

 class D extends Activity{

   // Other Code of Activity     

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }

}

 class Move {

     Context con;
     public Move(Context con){
           this.con = con;
      }


     public void go(String activityname)
     {

         Intent i = new Intent(con, activityname.class)
         this.con.startActivity(i);   

     }
}

移动到任何活动的通用方法“go”的代码-

class B extends Activity{

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }
}

 class C extends Activity{

    // Other Code of Activity 


    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }

}

 class D extends Activity{

   // Other Code of Activity     

    int backCount = getbackCountFromResponse();  // by calling any service

    String name = getActivityNameFromResponse(); // by calling any service

    Move m  = new Move(this);
    m.go(name);

    onBackPressed(){

    // What will be the code to move back according to number of back count
    }

}

 class Move {

     Context con;
     public Move(Context con){
           this.con = con;
      }


     public void go(String activityname)
     {

         Intent i = new Intent(con, activityname.class)
         this.con.startActivity(i);   

     }
}

---

我想从当前位置删除服务中计数的活动数。如何删除。

如果您想从活动堆栈中清除上一个任务，并想使另一个活动位于堆栈顶部，则应尝试此操作

Intent intent = new Intent(this, AnotherActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);

如果您不想清除以前的任务，而只想将以前的活动放在前面，那么可以像这样添加这两个标志

Intent intent = new Intent(this, AnotherActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(intent);

---

希望对您有所帮助。

方程混乱，无法理解！我已经更新了问题，请再次检查是否正确understandable@SamosysTechnologies看看下面我的答案，希望它能帮助你。