Android阻止鍵盤關閉

Question

是否可以阻止用戶關閉軟鍵盤。換句話說，當我的活動可見時，屏幕上始終可以使用鍵盤（始終）。這可能嗎？如果是這樣，你將如何實現它？

Answer 1

你需要重寫onKeyUp()和onKeyDown()方法，如下面，

@Override 
public boolean onKeyUp(int keyCode, KeyEvent event) { 
    if (keyCode == KeyEvent.KEYCODE_BACK)  
    { 
     ((InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE)).toggleSoftInput 
       (InputMethodManager.SHOW_FORCED,InputMethodManager.HIDE_IMPLICIT_ONLY); 
    } 
    return super.onKeyUp(keyCode, event); 
} 

@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) { 
    if (keyCode == KeyEvent.KEYCODE_BACK)  
    { 
     ((InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE)).toggleSoftInput 
       (InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY); 
    } 
    return super.onKeyDown(keyCode, event); 
} 

您也可以嘗試在兩種方式，通過使用OnEditorActionListener，看看下面的代碼，

EditText txtMyEdit = (EditText) findViewById(R.id.txtEdit); 
txtMyEdit.setOnEditorActionListener(new OnEditorActionListener() 
{ 
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) 
    { 
     if (actionId == EditorInfo.IME_ACTION_DONE) 
     { 
      // your additional processing... 
      return true; 
     } 
     else 
     { 
      return false; 
     } 
    } 
}); 

Answer 2

這應該強制鍵盤顯示與焦點無關：

InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); 
imm.hideSoftInputFromWindow(yourViewObject.getWindowToken(), 0); 
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,0);