Android的 - 交互与其他活动 [英] Android - Interact with an other activity

问题描述

所以，我有一个问题！

我有当一个按钮，用户点击时，会显示活动Ÿ名为X的活动。
我想，经过已收到活动点¯x发送的情况下，本活动可以被关闭。

I have got an activity called X. When the user click on a button, the activity Y is displayed. I want that this activity can be closed after have received an event sent by activity X.

你知道我该怎么做呢？

推荐答案

从十发 BroadcastMessage 的In y注册广播接收器与相同的IntentFilter 。因此，从X您可以发送将由Ÿ活动的的onReceive 方法捉了predefined退出消息。在那里，你可以结束活动年。

Send a BroadcastMessage from X. In y register a BroadcastReceiver with same IntentFilter. So from x you can send a predefined exit message which will be catched by y activity's onReceive method. There you can end the activity Y.

例如：

Y中的活动

private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        Bundle extras = intent.getExtras();
        if (extras != null) {
            if (extras.containsKey("exit")) {
                finish();

            }
        }
    }

不要忘记注册接收

dont forget to register the receiver

    registerReceiver(
            mMessageReceiver,
            new IntentFilter(Constants.YOUR_INTENT_FILTER));

和注销

unregisterReceiver( mMessageReceiver);

以x活动：

send the broadcastmessage using `sendBroadcast(Intent i)`

对于这种内部消息的我preFER <一个href=\"https://www.google.com.bd/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&sqi=2&ved=0CCwQFjAA&url=http://developer.android.com/reference/android/support/v4/content/LocalBroadcastManager.html&ei=sFxtUdyILIfKrAeCz4CYBg&usg=AFQjCNFu8jEI2XY2MXPdmzmaudH4M_XsBg&bvm=bv.45175338,d.bmk\"相对=nofollow> LocalBoradcastManager

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