Android基础篇 监听Home键
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一、Home键监听 工具类
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import com.blankj.utilcode.util.LogUtils;
public class HomeWatcher
private static final String TAG = "HomeWatcher";
private Context mContext;
private IntentFilter mFilter;
private OnHomePressedListener mListener;
private InnerRecevier mRecevier;
// 回调接口
public interface OnHomePressedListener
public void onHomePressed();
public void onHomeLongPressed();
public HomeWatcher(Context context)
mContext = context;
mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
/**
* 设置监听
*
* @param listener
*/
public void setOnHomePressedListener(OnHomePressedListener listener)
mListener = listener;
mRecevier = new InnerRecevier();
/**
* 开始监听,注册广播
*/
public void startWatch()
if (mRecevier != null)
mContext.registerReceiver(mRecevier, mFilter);
/**
* 停止监听,注销广播
*/
public void stopWatch()
if (mRecevier != null)
mContext.unregisterReceiver(mRecevier);
/**
* 广播接收者
*/
class InnerRecevier extends BroadcastReceiver
final String SYSTEM_DIALOG_REASON_KEY = "reason";
final String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS = "globalactions";
final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";
@Override
public void onReceive(Context context, Intent intent)
String action = intent.getAction();
if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS))
String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
if (reason != null)
LogUtils.i("action:" + action + ",reason:" + reason);
if (mListener != null)
if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY))
// 短按home键
mListener.onHomePressed();
else if (reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS))
// 长按home键
mListener.onHomeLongPressed();
二、使用
HomeWatcher mHomeWatcher = new HomeWatcher(this);
mHomeWatcher.setOnHomePressedListener(new OnHomePressedListener()
@Override
public void onHomePressed()
//按了HOME键
@Override
public void onHomeLongPressed()
//长按HOME键
);
mHomeWatcher.startWatch();
三、程序销毁时(如:onDestroy)时添加如下代码:
if(mHomeWatcher != null)
mHomeWatcher.stopWatch();// 在销毁时停止监听,不然会报错的。
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