第二個按鈕單擊後的顏色開關

Question

如何在第二次單擊後使用「開關語句」將按鈕1的顏色切換爲按鈕2？ 這些都是我的2個按鈕的點擊

private int lCount = 0; 
private int rCount = 0; 
private int myCount = lCount & rCount; 

final TextView countTextViewPlusL = (TextView) findViewById(R.id.TextViewCountL); 
final Button countButtonPlusL = (Button) findViewById(R.id.ButtonCountPlusL); 

countButtonPlusL.setOnClickListener(new OnClickListener() { 

    public void onClick(View v) { 
     myCount++; 
      if(myCount%2 == 0){ 
      countTextViewPlusL.setBackgroundColor(0xffffffff);} 
      else countTextViewPlusL.setBackgroundColor(0x00000000); 
     lCount++; 
     if (lCount >-1) 
     countTextViewPlusL.setText("" + lCount); 
    } 
}); 


final TextView countTextViewPlusR = (TextView) findViewById(R.id.TextViewCountR); 
final Button countButtonPlusR = (Button) findViewById(R.id.ButtonCountPlusR); 

countButtonPlusR.setOnClickListener(new OnClickListener() { 

    public void onClick(View v) { 
     myCount++; 
      if(myCount%2 == 0){ 
      countTextViewPlusR.setBackgroundColor(0xffffffff);} 
      else countTextViewPlusR.setBackgroundColor(0x00000000); 
     rCount++; 
     if (rCount >-1) 
     countTextViewPlusR.setText("" + rCount); 
    } 
}); 

Answer 1

你是在增加你的聽衆lCount和/或rCount，但你奇偶測試myCount。這就是事情不會改變的原因。

Answer 2

爲什麼你不嘗試這樣的事情呢？

private int lCount = 0; 
private int rCount = 0; 
private int myCount = 0; 

final TextView countTextViewPlusL = (TextView) findViewById(R.id.TextViewCountL); 
final Button countButtonPlusL = (Button) findViewById(R.id.ButtonCountPlusL); 
final TextView countTextViewPlusR = (TextView) findViewById(R.id.TextViewCountR); 
final Button countButtonPlusR = (Button) findViewById(R.id.ButtonCountPlusR); 

View.OnClickListener listener = new View.OnClickListener() { 
    public void onClick(View v) { 
     switch(v.getId()) { 
      case R.id.ButtonCountPlusR: 
       rCount++; 
       break; 
      case R.id.ButtonCountPlusL: 
       lCount++; 
       break; 
     } 
     myCount = lCount + rCount; 
     if(myCount % 2 == 0) { 
      //invert colors here 
     } 
    } 
}); 

countButtonPlusL.setOnClickListener(listener); 
countButtonPlusR.setOnClickListener(listener); 

初始化所有櫃檯到零，然後檢查每個點擊哪個按鈕被點擊，增加它的計數器，設置mycount的等於左側和右側櫃檯的總和，然後檢查如果是第二次點擊。在該檢查內部，反轉TextView顏色。