我有一个Android Activity需要捕获两个不同的广播。我目前的方法是在活动中有一个单一的BroadcastReceiver，并抓住它的广播：

public class MyActivity extends Activity {

private MyActivity.BroadcastListener mBroadcastListener;

private boolean mIsActivityPaused = false;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.mylayout);

// Create the broadcast listener and register the filters

mIsActivityPaused = false;

mBroadcastListener = new BroadcastListener();

IntentFilter filter = new IntentFilter();

filter.addAction(Params.INTENT_REFRESH);

filter.addAction(Params.INTENT_UPDATE);

registerReceiver(mBroadcastListener, filter);

}

@Override

protected void onResume() {

super.onResume();

mIsActivityPaused = false;

}

@Override

protected void onPause() {

super.onPause();

mIsActivityPaused = true;

}

@Override

protected void onDestroy() {

unregisterReceiver(mBroadcastListener);

super.onDestroy();

}

private void refresh() {

// refresh

}

private void update() {

// update

}

private class BroadcastListener extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

if (intent.getAction().equals(Params.INTENT_REFRESH && !mIsActivityPaused)) {

refresh();

} else if (intent.getAction().equals(Params.INTENT_UPDATE)) {

update();

}

}

}

}

我想要执行refresh()只有当我的活动是可见的在屏幕上，但我想捕获INTENT_UPDATE和执行update()在活动的整个生命周期，无论该活动是否可见。

我没有找到任何办法只注销我在onCreate中注册的两个过滤器之一，所以我使用一个标志来启用或禁用在捕获INTENT_REFRESH广播时执行的操作，具体取决于活动的状态。

问题是：这是正确的方法吗？

或者，最好有两个单独的BroadcastReceivers如下：

public class MyActivity extends Activity {

private MyActivity.BroadcastListenerRefresh mBroadcastListenerRefresh;

private MyActivity.BroadcastListenerUpdate mBroadcastListenerUpdate;

private boolean mIsBroadcastListenerRefreshRegistered = false;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

// Create the broadcast listeners

mBroadcastListenerRefresh = new BroadcastListenerRefresh();

mBroadcastListenerUpdate = new BroadcastListenerUpdate();

registerReceiver(mBroadcastListenerRefresh, new IntentFilter(Params.INTENT_REFRESH));

registerReceiver(mBroadcastListenerUpdate, new IntentFilter(Params.INTENT_UPDATE));

}

@Override

protected void onResume() {

super.onResume();

if (mBroadcastListenerRefresh != null && !mIsBroadcastListenerRefreshRegistered) {

registerReceiver(mBroadcastListenerRefresh, new IntentFilter(Params.INTENT_REFRESH));

mIsBroadcastListenerRefreshRegistered = true;

}

}

@Override

protected void onPause() {

super.onPause();

if (mBroadcastListenerRefresh != null && mIsBroadcastListenerRefreshRegistered) {

unregisterReceiver(mBroadcastListenerRefresh);

mIsBroadcastListenerRefreshRegistered = false;

}

}

@Override

protected void onDestroy() {

unregisterReceiver(mBroadcastListenerRefresh);

unregisterReceiver(mBroadcastListenerUpdate);

super.onDestroy();

}

private void refresh() {

// refresh

}

private void update() {

// update

}

private class BroadcastListenerRefresh extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

if (intent.getAction().equals(Params.INTENT_REFRESH)) {

refresh();

}

}

}

private class BroadcastListenerUpdate extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

if (intent.getAction().equals(Params.INTENT_UPDATE)) {

update();

}

}

}

}

哪一个有更好的性能？