android 实现一个按钮按下时总触发一个事件

一.简单的思路为：生产者+消费者模式来实现

1.重写这个对象的触摸事件（对触摸事件与事件分发机制的同学不了解的可以查阅其他资料）

2.在MotionEvent.ACTION_DOWN:事件中启动一个线程，这个线程类似生产者，它不停的生产想要的事件

这里的事件为了调用的顺序，建议采用队列的方式来缓存，事件对象可任意

3.在MptionEvent.ACTION_UP:事件中取消这个线程，取消线程即停止这个线程，采用置中断标记来停止一个线程

5.从任务队列中取出任务进行执行，类似消费者，代码模式与生产者很类似，具体的思路可参看我的前几编文章，里面有很详细的生产者消费者模式多线程的运用

二.任务请求对象：

package com.example.baize.touchdelegate.producer;import java.util.LinkedList;/** * 事件对象 *  * Created by lxb on 2017/3/31. */public class EventRequest<T> {    private LinkedList<T> requestQueue = new LinkedList<>();    private int count;    // 任务队列请求数    public EventRequest() {        this.count = 0;    }    public synchronized void buildEvent(T request) throws InterruptedException {        while (!requestQueue.isEmpty() && count >= requestQueue.size()) {            wait();        }        System.out.println(Thread.currentThread().getName() + "正在产生" + request + "到请求队列中");        requestQueue.addLast(request);        count++;        notifyAll();    }    public synchronized T sendEvent() throws InterruptedException {        while (count <= 0) {            wait();        }        T request = requestQueue.pop();        count--;        notifyAll();        System.out.println(Thread.currentThread().getName() + "已经成功从请求队列中拿到" + request);        return request;    }}

三.生产者线程：

package com.example.baize.touchdelegate.producer;/** * 生产游戏手柄的按键事件,本线程通过打断与启动标志来停止线程 *  * Created by lxb on 2017/3/31. */public class ProduceEventThread<T> extends Thread {    private EventRequest<T> eventRequest;    private volatile boolean terminated = false; // 停止请求标志    private T type;       //事件请求类型    public ProduceEventThread(T type, EventRequest<T> eventRequest) {        this.eventRequest = eventRequest;        this.type = type;    }    public void run() {        while (!terminated) {            try {                this.eventRequest.buildEvent(type);            } catch (InterruptedException e) {                terminated = true;            }        }    }    public void cancel(){        terminated = true;        interrupt();    }}

四.消费者线程：

package com.example.baize.touchdelegate.producer;/** * 发送游戏手柄事件的线程，类似消费者 * * Created by lxb on 2017/3/31. */public class SendEventThread<T> extends Thread {    private EventRequest<T> eventRequest;    private volatile boolean terminated = false; // 停止请求标志    private T type;       //事件请求类型    public SendEventThread(T type, EventRequest<T> eventRequest) {        this.eventRequest = eventRequest;        this.type = type;    }    public void run() {        while (!terminated) {            try {                this.eventRequest.sendEvent();            } catch (InterruptedException e) {                terminated = true;            }        }    }    public void cancel(){        terminated = true;        interrupt();    }}

五。整个触摸对象的触摸事件代理类：

package com.example.baize.touchdelegate;import android.view.MotionEvent;import android.view.View;import com.example.baize.touchdelegate.producer.EventRequest;import com.example.baize.touchdelegate.producer.ProduceEventThread;import com.example.baize.touchdelegate.producer.SendEventThread;/** * 游戏手柄按键不停的产生事件，由此类进行代理并采用生产者消费者模式实现 *  * Created by lxb on 2017/3/31. */public class TouchEventDelegate<T> implements View.OnTouchListener {    private T type ;    private ProduceEventThread<T> produceEventThread;    private SendEventThread<T> sendEventThread;    private EventRequest<T> eventRequest;    public TouchEventDelegate(T type) {        this.type = type;        eventRequest = new EventRequest<>();    }    @Override    public boolean onTouch(View v, MotionEvent event) {        switch (event.getAction()) {            case MotionEvent.ACTION_DOWN:                startThreads();                break;            case MotionEvent.ACTION_MOVE:                break;            case MotionEvent.ACTION_UP:                stopAllThreads();                break;        }        return true;    }    private void startThreads() {        produceEventThread = new ProduceEventThread<>(type, eventRequest);        sendEventThread = new SendEventThread<>(type, eventRequest);        produceEventThread.start();        sendEventThread.start();    }    private void stopAllThreads() {        if (produceEventThread != null) {            produceEventThread.cancel();            produceEventThread = null;        }        if (sendEventThread != null) {            sendEventThread.cancel();            sendEventThread = null;        }    }}

调用方式：

package com.example.baize.activity;import android.content.res.Configuration;import android.os.Bundle;import android.view.MotionEvent;import android.view.TouchDelegate;import android.view.View;import android.widget.ImageView;import android.widget.Toast;import com.example.baize.R;import com.example.baize.touchdelegate.TouchEventDelegate;import com.example.baize.utils.VibrateUtils;/** * 游戏手柄 * Created by lxb on 2017/3/31. */public class GameCtrlActivity extends BaseActivity{    private ImageView mBack;    private ImageView mLeft;    private ImageView mRight;    private ImageView mUp;    private ImageView mDown;    private ImageView mFun1;    private ImageView mFun2;    private ImageView mFun3;    private ImageView mFun4;    private ImageView mFun5;    private ImageView mX;    private ImageView mY;    private ImageView mA;    private ImageView mB;    private static final Integer leftTouch = 101;    private static final Integer upTouch = 102;    private static final Integer rightTouch = 103;    private static final Integer downTouch = 104;    private static final String xTouch = "X";    private static final String yTouch = "Y";    private static final String aTouch = "A";    private static final String bTouch = "B";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_game_ctrl);        initView();    }    @Override    protected void setStatusBar() {    }    private void initView(){        EventClick click = new EventClick();        mBack = getView(R.id.gc_back);        mLeft = getView(R.id.gc_left);        mRight = getView(R.id.gc_right);        mUp = getView(R.id.gc_up);        mDown = getView(R.id.gc_down);        mFun1 = getView(R.id.gc_fun1);        mFun2 = getView(R.id.gc_fun2);        mFun3 = getView(R.id.gc_fun3);        mFun4 = getView(R.id.gc_fun4);        mFun5 = getView(R.id.gc_fun5);        mX = getView(R.id.gc_x);        mY = getView(R.id.gc_y);        mA = getView(R.id.gc_a);        mB = getView(R.id.gc_b);        mBack.setOnClickListener(click);        /*mLeft.setOnClickListener(click);        mRight.setOnClickListener(click);        mUp.setOnClickListener(click);        mDown.setOnClickListener(click);*/        mFun1.setOnClickListener(click);        mFun2.setOnClickListener(click);        mFun3.setOnClickListener(click);        mFun4.setOnClickListener(click);        mFun5.setOnClickListener(click);       /* mX.setOnClickListener(click);        mY.setOnClickListener(click);        mA.setOnClickListener(click);        mB.setOnClickListener(click);*/        mLeft.setOnTouchListener(new TouchEventDelegate<>(leftTouch));        mUp.setOnTouchListener(new TouchEventDelegate<>(upTouch));        mRight.setOnTouchListener(new TouchEventDelegate<>(rightTouch));        mDown.setOnTouchListener(new TouchEventDelegate<>(downTouch));        mX.setOnTouchListener(new TouchEventDelegate<>(xTouch));        mY.setOnTouchListener(new TouchEventDelegate<>(yTouch));        mA.setOnTouchListener(new TouchEventDelegate<>(aTouch));        mB.setOnTouchListener(new TouchEventDelegate<>(bTouch));    }    private class EventClick implements View.OnClickListener{        @Override        public void onClick(View v) {            VibrateUtils.vSimple(GameCtrlActivity.this, 100);            switch(v.getId()){                case R.id.gc_back:                    GameCtrlActivity.this.finish();                    break;                case R.id.gc_fun1:                case R.id.gc_fun2:                case R.id.gc_fun3:                case R.id.gc_fun4:                case R.id.gc_fun5:                    Toast.makeText(GameCtrlActivity.this,"未定义",Toast.LENGTH_SHORT).show();                    break;            }        }    }}

测试结果：

04-01 09:11:16.727 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.727 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.728 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.728 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.728 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.728 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.728 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.728 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.729 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.729 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.729 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.729 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.729 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.729 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.729 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.730 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.730 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.730 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.730 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.730 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.730 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.730 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.731 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.731 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.731 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.731 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.731 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.731 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.731 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.732 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.732 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.732 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.732 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.732 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.733 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.733 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中
04-01 09:11:16.733 20460-21434/com.example.baize I/System.out: Thread-6183已经成功从请求队列中拿到X
04-01 09:11:16.740 20460-21433/com.example.baize I/System.out: Thread-6182正在产生X到请求队列中

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