将数据从广播接收器传递到另一个活动 [英] Passing Data from Broadcast Receiver to another Activity

问题描述

我一直在与广播接收器发生问题，并将信息传递给另一个活动.我正在尝试创建一个应用程序，该应用程序将捕获传入的SMS消息，在文本中查找一个网站，然后弹出一个警告"对话框，询问用户是否要访问该网站.

Hi I've been having an issue with Broadcast Receivers and passing information to another activity. I'm trying to create an application that will capture incoming SMS messages, look for a website in the text, then pop up an Alert Dialog box asking if the user wants to go to the website.

public class TextReceiver extends BroadcastReceiver{

public void onReceive(Context context, Intent intent)
{
    // .. other code that
    // sets received SMS into message

    Toast toast = Toast.makeText(context,
            "Received Text: " + message.getMessageBody(), Toast.LENGTH_LONG);
            toast.show();
 }

为使该代码正常工作，请接收文本，并随消息弹出祝酒词.烤面包没用，但显示接收器有效.但是我想与一个活动进行通信以显示警报对话框"并启动一个webView.我已经编写了代码，该代码将对网站进行字符串搜索并打开webView.是否可以从广播接收器中获取字符串并执行类似的操作?:

So that code works fine, receive a text it pops up a toast with the message. The toast is useless but it shows the receiver works. But I want to communicate with an activity to show an Alert Dialog and start up a webView. I already programmed the code that will take a string search for the website and open the webView. Is it possible to get the string from the broadcast receiver and do something like this?:

    public class ReceiveText extends Activity{
public void onCreate(Bundle savedInstanceState) {

// Somehow pass the string from the receiver into this activity, 
//stored in variable messages

findOpen(messages);

// is that possible?

}
public class findOpen(string messages){
// do stuff ... open alert...open site if OK
}

所以基本上，我只想将字符串从广播接收器传递到另一个使用该字符串的活动.剩下的代码基本上就位了，我只需要那个字符串...我对Java和Java都是陌生的，任何帮助将不胜感激.谢谢

So basically I just want to pass a string from a Broadcast Receiver to another activity that will use that string. The rest of the code is basically in place all I need is that string... I'm new to this and Java and any help would be much appreciated. Thanks

推荐答案

如果您的活动名为ReceiveText，则在BroadcastReceiver中，您应该执行以下操作:

If you have your activity named ReceiveText, then in your BroadcastReceiver, you should do the following:

Intent i = new Intent(context, ReceiveText.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("message", message.getMessageBody());
context.startActivity(i);

然后，在您的活动中，您将需要像这样getExtra:

Then, in your activity, you will need to getExtra as so:

Intent intent = getIntent();
String message = intent.getStringExtra("message");

然后您将根据需要使用message.

And then you will use message as you need.

如果仅希望ReceiveText活动将消息显示为对话框，请在清单中为ReceiveText声明<activity android:theme="@android:style/Theme.Dialog" />，然后将消息设置为活动中的textview.

If you simply want the ReceiveText activity to show the message as a dialog, declare <activity android:theme="@android:style/Theme.Dialog" /> in your manifest for ReceiveText and then set the message to a textview in the activity.

让我知道是否需要添加其他内容.

Let me know if I need to add anything else.

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