android dialog屏蔽back返回鍵的解決方法

需求：activity彈出dialog，按下返回鍵dialog消失、activity也要finish

解決方法：

直接上代碼：

myMaterDialog = new MyMaterialDialog(UserBuyActivity.this);
myMaterDialog.setTitle(title);
myMaterDialog.setMessage(message);

myMaterDialog.setPositiveButton(positive, new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        myMaterDialog.dismiss();
            }
});
myMaterDialog.setNegativeButton(negative, new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        myMaterDialog.dismiss();
                    }
});

myMaterDialog.setOnListener(new DialogInterface.OnKeyListener() {
    @Override
    public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
        if(keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount()==0)
        {
            myMaterDialog.dismiss();
            UserBuyActivity.this.finish();
        }
        return false;
    }
});

myMaterDialog.setCanceledOnTouchOutside(false);
myMaterDialog.show()

;

-----------------實現綠色背景的代碼即可------------------------