记录Android开发中的问题及解决方法

1.DialogFragment 不可取消和点击外部不消失

 DialogFragment.getDialog.setCancelable(false);
 DialogFragment.getDialog.setCanceledOnTouchOutside(false);

DialogFragment.getDialog().setOnKeyListener(new DialogInterface.OnKeyListener() {
            @Override
            public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
                if (keyCode == KeyEvent.KEYCODE_BACK) {
                    return true;
                }
                return false;
            }
        });

 2.RadioButton再次点击取消

 复写RadioButton toggle()方法

@Override
public void toggle() {
    setChecked(!isChecked());
    if (!isChecked()) {
        ((RadioGroup) getParent()).clearCheck();
    }
}