Button模擬開關按鈕

iv_sound.setOnClickListener(new OnClickListener() {
            boolean flagDoubleClick=false;
            @Override
            public void onClick(View v) {
                if (!flagDoubleClick) {

                    Toast.makeText(ChatActivity.this,"第1點擊",Toast.LENGTH_SHORT).show();

                    flagDoubleClick = true;
                }else {
                    
                    Toast.makeText(ChatActivity.this,"第2點擊",Toast.LENGTH_SHORT).show();

                    flagDoubleClick = false;
                }

            }
        });