如何讓scrollBy直接運行？

Question

滾動按鈕不會直接觸發。怎麼做？請幫忙。我是這個新手。 :-(

//declaration of my ScrollView 

scroll = (ScrollView) findViewById(R.id.scrollMe); 

private View.OnFocusChangeListener focusListenertest = new View.OnFocusChangeListener() { 
    @Override 
    public void onFocusChange(View v, boolean hasFocus) { 
     // TODO Auto-generated method stub 
     if(myTextBox.hasFocus()) 
     { 
      scroll.post(new Runnable() { 
        @Override 
        public void run() { 
         scroll.scrollBy(0 , +30); 
        } 
       }); 
     } 

    } 
}; 

Answer 1

代替myTextBox.hasFocus()使用v.hasFocus，也是我不認爲運行的直接調用需要scroll.scrollBy(0 , +30);

所以你的代碼會是這樣

scroll = (ScrollView) findViewById(R.id.scrollMe); 

private View.OnFocusChangeListener focusListenertest = new View.OnFocusChangeListener() { 
@Override 
public void onFocusChange(View v, boolean hasFocus) { 
    // TODO Auto-generated method stub 
    if(v.hasFocus()) 
    { 

        scroll.scrollBy(0 , +30);//if u get exception or ANR then use Runnable the way u did 

    } 

} 
};