Question

您是编程新手。我正在使用onClick（View v）启动一个线程。它运行正常。现在我想重复“按钮点击”而不再点击按钮。我找了大约5个小时。但我没有得到任何答案。我用户button.performClick（）;但什么都没发生。我想重新开始我的线程。

接收器：

private OnClickListener connectListener = new OnClickListener() {

    @Override
    public void onClick(View v) {
        if (!connected) {
            serverIpAddress = serverIp.getText().toString();
            if (!serverIpAddress.equals("")) {
                Thread cThread = new Thread(new ClientThread());
                cThread.start();
                connectPhones = (Button) findViewById(R.id.connect_phones);

                connectPhones.setPressed(false);
                connectPhones.invalidate();
                Handler handler1 = new Handler();
                Runnable r1 = new Runnable() {
                    public void run() {


                        connectPhones.performClick();
                        connectPhones.setPressed(true); 
                        connectPhones.invalidate(); 
                        connectPhones.setPressed(false); 
                        connectPhones.invalidate(); 

                    }
                };
                handler1.postDelayed(r1, 1000);

            }  
        }
    }
};

public class ClientThread implements Runnable {

    public void run() {
        try {
            InetAddress serverAddr = InetAddress.getByName(serverIpAddress);
            Log.d("ClientActivity", "C: Connecting...");
            Socket socket = new Socket(serverAddr, ServerActivity.SERVERPORT);
            connected = true;

            final String path = "/sdcard/all.png";
            File file = new File(path);


            ObjectInputStream reader = new ObjectInputStream(socket.getInputStream());
            int nRead = 0;
            byte[] data = new byte[socket.getReceiveBufferSize()];
            FileOutputStream fileOutputStream = new FileOutputStream( path );
          //  while(connected == true){
                while( (nRead = reader.read(data)) != -1 ){
                    fileOutputStream.write( data, 0, nRead );
                    fileOutputStream.flush();
                    data = new byte[socket.getReceiveBufferSize()];
                }
                fileOutputStream.close();
            //}


                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        Bitmap bitmap = BitmapFactory.decodeFile(path);
                        image.setImageBitmap(bitmap);
                        image.postInvalidate();
                    }
                });

                file.delete();

            reader.close();

         //connectPhones.performClick();
           /* while (connected) {
                try {
                    Log.d("ClientActivity", "C: Sending command.");
                    PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket
                                .getOutputStream())), true);
                        // WHERE YOU ISSUE THE COMMANDS
                        out.println("Hey Server!");
                        Log.d("ClientActivity", "C: Sent.");
                } catch (Exception e) {
                    Log.e("ClientActivity", "S: Error", e);
                }
            }*/
            socket.close();
            Log.d("ClientActivity", "C: Closed.");
        } catch (Exception e) {
            Log.e("ClientActivity", "C: Error", e);

        }
        connected = false;
    }
}

}

Answer 1

在onClick方法中添加此内容：

 btn = (Button) findViewById(R.id.yourButton);

            btn.setPressed(false);
            btn.invalidate();
            Handler handler1 = new Handler();
            Runnable r1 = new Runnable() {
                public void run() {


                 btn.performClick();
                 btn.setPressed(true); 
                 btn.invalidate(); 
                 btn.setPressed(false); 
                 btn.invalidate(); 

                }
            };
            handler1.postDelayed(r1, 1000);

Answer 2

为了您的目的，我创建了一个示例代码。这段代码完美无缺。你可以试试这个。您可以在下面编写代码//在此处下载文件评论。

public class MainActivity extends Activity {

    boolean connected = false;
    Button button_example = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);         
        button_example = (Button) findViewById(R.id.button1);
        button_example.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "button clicked called", Toast.LENGTH_SHORT).show();
                System.out.println("bb message called");
                if (!connected) {
                    Thread thread = new Thread(new Runnable() {

                        @Override
                        public void run() {
                            connected = true;
                            // DOWNLOAD FILE HERE.
                            try {
                                Thread.sleep(1000);
                            } catch (InterruptedException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }

                            runOnUiThread(new Runnable() {
                                public void run() {
                                    connected = false;
                                    button_example.performClick();
                                }
                            });
                        }
                    });
                    thread.start();
                }
            }
        });
    }

Android线程重复而不点击按钮

2 个答案: