如果您单击通知上的快速回复按钮，我会尝试创建一个小窗口来打开它。在 WhatsApp 中，它会打开一个半屏窗口。目前我正在做以下事情:

我打开了一个名为 NotificationActivity 的 Activity 。在 AndroidManifest.xml 中，我将 Activity 注册为

<activity
    android:name=".activity.NotificationActivity"
    android:theme="@style/Theme.AppCompat.Light.Dialog.custom"
    android:label="@string/title_activity_notification"
    android:screenOrientation="portrait"
    android:windowSoftInputMode="adjustResize|stateHidden" />

这是样式:

<style name="Theme.AppCompat.Light.Dialog.custom">
    <item name="windowNoTitle">true</item>
    <item name="windowActionBar">false</item>
</style>

现在，当应用程序完全关闭(关闭然后滑动离开)时，它可以完美运行。

但是，如果应用程序只是最小化，当有人点击回复按钮时，它会打开应用程序，然后将 NotificationActivity 粘贴到上面。如何防止应用程序在后台打开并且只打开半屏通知 Activity 。

非常感谢

编辑:我在想也许 xml 文件是相关的？

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="300dp"
    android:layout_marginTop="15dp"
    android:background="@color/white"
    android:orientation="vertical"
    android:paddingTop="12dp"
    android:weightSum="20">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:gravity="center"
        android:orientation="vertical">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/lvChat"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="10"
            android:background="@android:color/transparent"
            android:cacheColorHint="@android:color/transparent"
            android:divider="@android:color/transparent"
            android:dividerHeight="0dp"
            android:listSelector="@android:color/transparent"
            android:scrollbars="none"
            android:stackFromBottom="false"
            android:transcriptMode="alwaysScroll"/>

        <LinearLayout
            android:id="@+id/chatFooter"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#ECEFF1"
            android:orientation="horizontal">

            <LinearLayout
                android:id="@+id/sendLayout"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="center_vertical"
                android:paddingBottom="@dimen/scale_5dp"
                android:paddingTop="@dimen/scale_5dp"
                android:weightSum="2">

                <LinearLayout
                    android:layout_width='0dp'
                    android:layout_height="wrap_content"
                    android:layout_weight="1.8">

                    <com.heyjude.heyjudeapp.customview.EditRobotoRegular
                        android:id="@+id/editChatMsg"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:background="@drawable/linear_back"
                        android:hint="Type your message..."
                        android:imeOptions="actionSend"
                        android:inputType="textMultiLine|textCapSentences|text"
                        android:padding="@dimen/scale_5dp"
                        android:textColor="#5f6060"
                        android:textColorHint="#5f6060"
                        android:textSize="@dimen/text_14"/>
                </LinearLayout>

                <ImageButton
                    android:id="@+id/ivSend"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0.3"
                    android:background="@android:color/transparent"
                    android:src="@drawable/ic_chat_icon"/>

            </LinearLayout>

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@color/grey_list"
            android:gravity="center"
            android:orientation="horizontal"
            android:weightSum="2">

            <Button
                android:id="@+id/buttonView"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:text="View"
                android:textAllCaps="false"
                android:textSize="@dimen/text_22"/>

            <Button
                android:id="@+id/buttonCancel"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:text="Cancel"
                android:textAllCaps="false"
                android:textSize="@dimen/text_22"/>

        </LinearLayout>

    </LinearLayout>

</LinearLayout>

也不确定这是否相关，但这是我创建回复的方式

String KEY_TEXT_REPLY = "key_text_reply";
String replyLabel = "Type here";
Intent intent = new Intent(context, NotificationActivity.class);
intent.putExtra(Constants.REQUEST_ID, messageData.taskid);
intent.putExtra(Constants.JUDE_ID, messageData.from);
intent.putExtra(Constants.FROM, Constants.NOTIFICATION);

PendingIntent pendingIntent = PendingIntent.getActivity(
                context,
                0,
                intent,
                PendingIntent.FLAG_UPDATE_CURRENT);

RemoteInput remoteInput = new RemoteInput.Builder(KEY_TEXT_REPLY)
        .setLabel(replyLabel)
        .build();

NotificationCompat.Action replyAction = new NotificationCompat.Action.Builder(
                R.drawable.send_button,
                "Reply", pendingIntent)
                .addRemoteInput(remoteInput)
                .build();

builder.addAction(replyAction);

最佳答案

要实现您想要的效果，您需要使用属性 android:launchMode值为 singleInstance:

Same as "singleTask", except that the system doesn't launch any other activities into the task holding the instance. The activity is always the single and only member of its task.

您还应该添加 android:excludeFromRecents="true" 以将您的 Activity 从最近使用的应用程序列表中排除，如 documentation 所述:

Whether or not the task initiated by this activity should be excluded from the list of recently used applications, the overview screen. That is, when this activity is the root activity of a new task, this attribute determines whether the task should not appear in the list of recent apps. Set "true" if the task should be excluded from the list; set "false" if it should be included. The default value is "false".

总而言之，您需要像这样更改您的 AndroidManifest.xml:

<activity
    android:name=".activity.NotificationActivity"
    android:theme="@style/Theme.AppCompat.Light.Dialog.custom"
    android:label="@string/title_activity_notification"
    android:screenOrientation="portrait"
    android:windowSoftInputMode="adjustResize|stateHidden"
    android:launchMode="singleInstance"
    android:excludeFromRecents="true" />

关于android - 尝试为前置和手机创建 Whatsapp 快速回复，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39344133/