针对一些在android 应用界面使用Ctrl + C组合键，直接退出应用的解决方案

只需增加  dispatchKeyEvent方法  对Ctrl + C 做处理

 @Override
    public boolean dispatchKeyEvent(KeyEvent event){
        int keyCode = event.getKeyCode();
        if(event.isCtrlPressed() && keyCode == KeyEvent.KEYCODE_C && event.getAction() == KeyEvent.ACTION_DOWN){
            return true;
        }else if(event.isCtrlPressed() && keyCode == KeyEvent.KEYCODE_C && event.getAction() == KeyEvent.ACTION_UP){
            if(mText != null){
                int indexStart = mText.getSelectionStart();
                int indexEnd = mText.getSelectionEnd();
                CharSequence selectText = mText.getText().subSequence(indexStart, indexEnd);
                ClipboardManager cm =(ClipboardManager)getSystemService(Context.CLIPBOARD_SERVICE);
                cm.setText(selectText.toString());
            }
        }
        return super.dispatchKeyEvent(event);
    }