Android Home键监听的实现代码

Android Home键监听的实现代码

之前的一个项目需要监听home键的事件，发现用dispatchKeyEvent无法实现监听，后来查了些资料，才知道home键不能用常规的按键事件监听，需要使用广播的方法。下面是我封装的一个工具类。根据自己实际需要修改吧。

注册广播：

HomeListener.getInstance().start(this);

移除广播

HomeListener.getInstance().stop(this);

设置监听回调

HomeListener.getInstance().setHomeKeylistener(HomePressListener listener）；

添加监听回调

HomeListener.getInstance().addHomeKeyListener(HomePressListener listener）

移除监听回调

HomeListener.getInstance().removeHomeKeyListener(HomePressListener listener);

移除所有监听回调

HomeListener.getInstance().removeAllHomeKeyListener();

销毁

HomeListener.getInstance().destroy();

工具类代码：

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.atomic.AtomicBoolean;

public class HomeListener {

public static HomeKeyListener getInstance() {

HomeKeyListener listener = HomeKeyListener.sListener;

listener.init();

return listener;

}

static class HomeKeyListener {

privathttp://e static final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";//home键旁边的最近程序列表键

private static final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";//按下home键

private static final String SYSTEM_DIALOG_REASON_ASSIST = "assist";//某些三星手机的程序列表键

private static AtomicBoolean isDestroy = new AtomicBoolean(true);

private static AtomicBoolean isRegister = new AtomicBoolean(false);

private static HomeKeyListener sListener = new HomeKeyListener();

private List mPressListeners = new ArrayList();

private HomeReceiver mReceiver;

private IntentFilter mHomeFileter;

private HomePressListener mHomePressListener;

public void init() {

if (isDestroy.get()) {

this.mPressListeners = new ArrayList();

this.mReceiver = new HomeReceiver();

this.mHomeFileter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);

isDestroy.set(false);

}

}

public synchronized void start(Context context) {

if (!isRegister.get()) {

context.registerReceiver(mReceiver, mHomeFileter);

isRegister.set(true);

}

}

public synchronized void stop(Context context) {

if (isRegister.get()) {

context.unregisterReceiver(mReceiver);

isRegister.set(false);

}

}

public void setHomeKeylistener(HomePressListener listener) {

this.mHomePressListener = listener;

}

public void addHomeKeyListener(HomePressListener listener) {

mPressListeners.add(listener);

}

public void removeHomeKeyListener(HomePressListener listener) {

mPressListeners.add(listener);

}

public void removeAllHomeKeyListener() {

mPressListeners.clear();

}

public void destroy() {

this.mPressListeners.clear();

this.mPressListeners = null;

this.mReceiver = null;

this.mHomeFileter = null;

this.mHomePressListener = null;

isDestroy.set(true);

}

public interface HomePressListener {

void onHomePress();

void onHomeRecentAppsPress();

}

class HomeReceiver extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

receive(intent);

}

}

private void receive(Intent intent) {

String action = intent.getAction();

if (action != null && action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {

String reason = intent.getStringExtra( "reason" );

dispatchPress(reason);

}

}

private void dispatchPress(String reason) {

switch (reason) {

case SYSTEM_DIALOG_REASON_HOME_KEY:

if (mHomePressListener != null) mHomePressListener.onHomePress();

for (HomePressListener listener : mPressListeners) listener.onHomePress();

break;

case SYSTEM_DIALOG_REASON_RECENT_APPS:

case SYSTEM_DIALOG_REASON_ASSIST:

if (mHomePressListener != null) mHomePressListener.onHomeRecentAppsPress();

for (HomePressListener listener : mPressListeners) listener.onHomeRecentAppsPress();

break;

}

}

}

}

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。