捕获Home按键

/**
* 监听是否点击了home键将客户端推到后台
*/
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
System.out.println("本人按键————————home");

Toast.makeText(getApplicationContext(), "home", 1).show();  ;
System.exit(0);
}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
System.out.println("本人按键————————home===========");
}
}
}
};