如何通過意圖setclass從父活動中調用其他活動？

Question

我正在嘗試通過已定義的字符串值的處理使用baseActivity來進行動態移動活動處理。
但是我遇到了“活動不是封閉類”的問題。 調用baseActivity的“ newIntent.setClassName”方法時出錯。
你能幫個忙嗎？

首先，為了解釋嘗試代碼，

此過程用於用戶注冊過程。

這是二手活動。
1. AgreeChildActivity（同意服務條款）
2.VerificationingChildActivity（驗證用戶）
3. InputChildActivity（輸入用戶信息）
4. CompleteChildActivity（顯示已完成的服務聯接）

1〜4是“ GateBaseActivity”的子級。

它通過“ MainActivity”的onClick方法啟動動態移動過程。

MainActivity {
    String sProcessCase1 = "verifying->input->complete";
    String sProcessCase2 = "input->verifying->complete";
    String sProcessCase3 = "input->complete";

    :
    :

    public void onClick(View v) {
        Intent intent = null;
        try {
            switch (v.getId()) {
                case R.id.goDynamicMenu:
                   // start dynamic process
                   Intent newIntent = new Intent()
                   newIntent.setClassName(this, "AgreeChildActivity");
                   newIntent.putExtra("MOVE_SEQ", sProcessCase1);   <== set processCase.
                   startActivity(newIntent);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}


// Following is each activities code.

GateBaseActivity (<= This is a parent of all process activity.) 
   void onResume() { (so executes this method when each process activity shows.)
       String sActivitySeq = getintent("MOVE_SEQ"); <= "verifying->input->complete"
       String sNextActivity = <= calculate the nextActivity name on sActivitySeq.  For simple, omitted. 
       // "verifying->input->complete"
       // verifying => VerifyingChildActivity
       // input => InputChildActivity
       // complete => CompleteChildActivity

       String sThisChildSimpleName = this.getClass().getSimpleName();

       Intent newIntent = new Intent();

       // execute here when childActivity is the "AgreeChildActivity".
       if ("AgreeChildActivity".equals(sThisChildSimpleName)) {
           newIntent.setClassName(AgreeChildActivity(<=Here occured "not an enclosing class err.", How to solve this error?).this, sNextActivity);
       }

       // execute here when childActivity is the "VerifyingChildAcitivty".
       else if ("VerifyingChildActivity".equals(sThisChildSimpleName)) {
           newIntent.setClassName(VerifyingChildActivity(<=Here occured "not an enclosing class err.", How to solve this error?).this, sNextActivity);
       }

       // execute here when childActivity is the "InputChildAcitivty".
       else if ("InputChildActivity".equals(sThisChildSimpleName)) {
           newIntent.setClassName(InputChildActivity(<=Here occured "not an enclosing class err.", How to solve this error?).this, sNextActivity);
       }

       // execute here when childActivity is the "CompleteChildActivity".
       else if ("CompleteChildActivity".equals(sThisChildSimpleName)) {
           newIntent.setClassName(CompleteChildActivity(<=Here occured "not an enclosing class err.", How to solve this error?).this, sNextActivity);
       }

       newIntent.putExtra("MOVE_SEQ", sActivitySeq);
       startActivity(intent); 
   }


// These are child activities of "GateBaseActivity".

AgreeChildActivity implement GateBaseActivity
   void onResume() {
       super.onResume();
       Log.d("autoTest", "Here is AgreeChildActivity.");
   }

VerifyingChildActivity implement GateBaseActivity
   void onResume() {
       super.onResume();
       Log.d("autoTest", "Here is VerifyingChildActivity.");
   }

InputChildActivity implement GateBaseActivity
   void onResume() {
       super.onResume();
       Log.d("autoTest", "Here is InputChildActivity.");
   }

CompleteChildActivity implement GateBaseActivity
   void onResume() {
       super.onResume();
       Log.d("autoTest", "Here is CompleteChildActivity.");
   }

Answer 1

嘗試-

Context context = getApplicationContext();
Intent intent = new Intent(context, AgreeChildActivity.class);

您必須使用現有的活動上下文來啟動新活動，尚未創建新活動，並且不能使用其上下文或對其調用方法。

不會因為您使用此關鍵字而引發封閉類錯誤 。 這是對當前對象的引用—當前對象的方法或構造函數正在被調用。 使用此方法，您只能從實例方法或構造函數中引用當前對象的任何成員。