创建一个广播接受者
private BroadcastReceiver mHomeKeyEventReceiver = new BroadcastReceiver() {
String SYSTEM_REASON = "reason";
String SYSTEM_HOME_KEY = "homekey";
String SYSTEM_HOME_KEY_LONG = "recentapps";
@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_REASON);
if (TextUtils.equals(reason, SYSTEM_HOME_KEY)) {
//表示按了home键,程序到了后台
}else if(TextUtils.equals(reason, SYSTEM_HOME_KEY_LONG)){
//表示长按home键,显示最近使用的程序列表
}
}
}
};
在Activity或者Service中注册监听
registerReceiver(mHomeKeyEventReceiver, new IntentFilter( Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
