Android开放的对话活动，而无需打开主活动背后 [英] android open dialogue activity without opening main activity behind it

问题描述

我写一个程序，在收到短信提供了一个快速回复的对话框。

Im writing a program that offers a quick reply dialog upon receipt of an SMS.

不过，我却得到了意想不到的结果。当我receieve短信，相应的对话框活动出现无法显示正确的电话号码和邮件，但有一个背后的第二个活动是在我的程序默认活动（这是当我启动我的应用程序是什么打开）

However, I am getting an unexpected result. When I receieve an SMS, the appropriate dialog activity comes up displaying the correct phone number and message, however there is a second activity behind it that is the 'default' activity in my program (it is what opens when i launch my application)

我不希望本次活动上来。快速回复活动应该拿出自身在无论用户在做之前之上。

I do not want this second activity to come up. The quick reply activity should come up by itself over top of whatever the user was doing before.

在'飘'的活动：

public class quickReply extends Activity {
String mNumber, mMessage;
TextView mMainText;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    mMainText = (TextView)findViewById(R.id.mainText);

    try{
        Intent i = getIntent();
        Bundle extras = i.getExtras();

        mNumber = extras.getString("theNumber");
        mMessage = extras.getString("theMessage");
         this.setTitle("Message From:" + mNumber);
         mMainText.setText(mMessage);


    } catch(Exception e) {
        mMainText.setText(e.getMessage());
    }      

}

}

内的的onReceive的调用活动（）

The call to the activity inside an onReceive()

        Intent i = new Intent(context, quickReply.class);
    i.putExtra("theNumber", mNumber);
    i.putExtra("theMessage", mMessage);
    i.setFlags(
            Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(i);

该清单：

<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".quickReply"
              android:label="@string/app_name"
              android:theme="@android:style/Theme.Dialog"
              >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
       <receiver android:name=".SmsReceiver"> 
        <intent-filter> 
            <action android:name=
                "android.provider.Telephony.SMS_RECEIVED" /> 
        </intent-filter> 
    </receiver>

</application>

推荐答案

这样的作品，在活动定义清单中我发现的唯一方法：

the only way I have found that works, in your activity definition in manifest:

android:launchMode="singleInstance"

但你必须要重新启动您的主/默认行为一旦被驳回的对话。注意：您将失去从previous推出所有的状态，所以这是一个理想的解决方案少

but then you have to relaunch your main/default activity once the dialog is dismissed. NOTE: you will lose all state from the previous launch, so this is a less than ideal solution.

更新：

您也可以做到这一点：

Intent.FLAG_ACTIVITY_CLEAR_TASK

所以这里就是我所做的：

so here's what I did:

1. 打开原来的/主要活动
2. 从一个服务，使用上述（主变再见）启动对话框样式的活动。

3. 当用户关闭对话框，再次用一个额外的意图（IS_BACK）是在的onCreate（处理），并调用启动主：

1. open the original/main activity
2. from a service, launch the dialog style activity using the above (main goes bye-bye).

3. when the user dismisses the dialog, start main again with an extra intent (IS_BACK) that is processed in onCreate() and calls:

moveTaskToBack（真）;

moveTaskToBack(true);

这将保持对话下任务上顶部和在叠层的背面主

this will keep the task under the dialog on top and your main in the back of the stack.

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