入门级带你实现一个安卓智能家居APP（1）java版本，万字长文轻松彻底入门Flutter

if(isConnecting)

{

isConnecting=false;

if(mSocketClient!=null)

{

try{

mSocketClient.close();

mSocketClient = null;

if (mPrintWriterClient!=null){

mPrintWriterClient.close();

mPrintWriterClient = null;

}

mThreadClient.interrupt();

startButton.setText(“开始连接”);

IPText.setEnabled(true);//可以输入ip和端口号

warning_show.setText(“断开连接\n”);

} catch (IOException e) {

e.printStackTrace();

}

}

}else

{

mThreadClient = new Thread(mRunnable);

mThreadClient.start();

}

}

});

//通风开关按钮初始化

final Switch switch_c=findViewById(R.id.switch_c);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

switch_c.setShowText(true);//按钮上默认显示文字

}

switch_c.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)

@Override

public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

if (isChecked)//当isChecked为true时，按钮就打开，并发送开的指令，当isChecked为false时，按钮就关闭，并发送关的指令

{

switch_c.setSwitchTextAppearance(MainActivity.this,R.style.s_true);//开关样式

switch_c.setShowText(true);//显示开关为on

if (send(send_order[0],-1)){

showDialog(“开启通风”);

}else{

switch_c.setChecked(false);//当APP没有连接到单片机时，默认此按钮点击无效

}

}else{

switch_c.setSwitchTextAppearance(MainActivity.this,R.style.s_false);//开关样式

switch_c.setShowText(true);//显示文字on

if (send(send_order[1],-1)){

showDialog(“关闭通风”);

}else{

switch_c.setChecked(false);//当APP没有连接到单片机时，默认此按钮点击无效

}

}

}

});

//抽湿开关按钮

final Switch switch_t=findViewById(R.id.switch_t);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

switch_t.setShowText(true);//按钮上默认显示文字

}

switch_t.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)

@Override

public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

if (isChecked)

{

switch_t.setSwitchTextAppearance(MainActivity.this,R.style.s_true);//开关样式

switch_t.setShowText(true);//显示文字on

if (send(send_order[2],-1)){

showDialog(“开启抽湿”);

}else{

switch_t.setChecked(false);//当APP没有连接到单片机时，默认此按钮点击无效

}

}else{

switch_t.setSwitchTextAppearance(MainActivity.this,R.style.s_false);//开关样式

switch_t.setShowText(true);

if (send(send_order[3],-1)){

// flag=false;

showDialog(“关闭抽湿”);

}else{

switch_t.setChecked(false);//当APP没有连接到单片机时，默认此按钮点击无效

}

}

}

});

}

//开启子线程

private Runnable mRunnable = new Runnable() {

@Override

public void run() {

String msgText = IPText.getText().toString();

if(msgText.length()<=0)//IP和端口号不能为空

{

Message msg = new Message();

msg.what = 5;

mHandler.sendMessage(msg);

return;

}

int start = msgText.indexOf(“:”);//IP和端口号格式不正确

if((start==-1)||(start+1>=msgText.length()))

{

Message msg = new Message();

msg.what = 6;

mHandler.sendMessage(msg);

return;

}

String sIP= msgText.substring(0,start);

String sPort = msgText.substring(start+1);

int port = Integer.parseInt(sPort);

BufferedReader mBufferedReaderClient;//从字符输入流中读取文本并缓冲字符，以便有效地读取字符，数组和行

try

{

//连接服务器

mSocketClient = new Socket();//创建Socket

SocketAddress socAddress = new InetSocketAddress(sIP, port);//设置ip地址和端口号

mSocketClient.connect(socAddress, 2000);//设置超时时间为2秒

//取得输入、输出流

mBufferedReaderClient =new BufferedReader(