要求制作自定义通知，因为Android默认的通知只允许添加图片。所以我查找了如何在展开时附加自定义UI的方法，答案是创建一个自定义视图并传递给通知管理器，并且只能从API 16开始使用。因此我创建了一个自定义视图，以下是我的布局XML代码 - 文件名：notification_custom_view_new：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/GhostWhite">
<RelativeLayout
android:id="@+id/header"
android:layout_width="match_parent"
android:layout_height="65dp">
<ImageView
android:id="@+id/big_icon"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_centerVertical="true"
android:layout_marginLeft="12dp"
android:scaleType="fitCenter" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignBottom="@+id/big_icon"
android:layout_alignTop="@+id/big_icon"
android:layout_toRightOf="@+id/big_icon"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:weightSum="2">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1.6"
android:orientation="vertical">
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:text="Title"
android:textColor="@color/colorBlackDimText"
android:textSize="16sp"
android:textStyle="bold" />
<TextView
android:id="@+id/message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="2"
android:paddingTop="2dp"
android:text="message"
android:textColor="@color/colorBlackDimText"
android:textSize="14sp" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.4"
android:gravity="center">
<TextView
android:id="@+id/time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="2"
android:padding="8dp"
android:text="24:59"
android:textColor="@color/colorBlackDimText"
android:textSize="12sp" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
<View
android:id="@+id/shadow"
android:layout_width="match_parent"
android:layout_height="5dp"
android:layout_below="@+id/header"
android:background="@drawable/shadow" />
<ImageView
android:id="@+id/big_picture"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/header"
android:src="@drawable/vector_icon_collections"
android:minHeight="240dp"
android:scaleType="fitCenter" />
</RelativeLayout>
我在代码中引用它的方式是：
private RemoteViews assignRemote(Bitmap bitmap, String title, String message){
RemoteViews expandedView = new RemoteViews(Application.getInstance().getPackageName(),
R.layout.notification_custom_view_new);
expandedView.setTextViewText(R.id.title, title);
expandedView.setTextViewText(R.id.message, message);
expandedView.setImageViewBitmap(R.id.big_picture, bitmap);
expandedView.setImageViewResource(R.id.big_icon, R.mipmap.ic_launcher);
expandedView.setTextViewText(R.id.time, getOnlyHrsMin());
return expandedView;
}
将自定义视图分配给通知管理器：
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
notification.bigContentView = assignRemote(bitmap, title, message);
}
但是这让我出现了错误，显示不良通知，我在stackoverflow上找到了15多个相同的问题，没有正确的答案...有人建议它是资源缺失，因此出现了错误。我确定我的值都不为空，也没有远程视图中的资源缺失错误。
非常感谢您的帮助！我已经尝试了几天来跟踪错误，但好像没有什么进展。
NotificationCompat.BigPictureStyle bigPictureStyle = new NotificationCompat.BigPictureStyle();
bigPictureStyle.setBigContentTitle(title);
bigPictureStyle.setSummaryText(Html.fromHtml(message).toString());
bigPictureStyle.bigPicture(bitmap);
Notification notification;
notification = mBuilder.setSmallIcon(icon).setTicker(title).setWhen(0)
.setAutoCancel(true)
.setContentTitle(title)
.setContentIntent(resultPendingIntent)
.setSound(alarmSound)
.setLights(Color.WHITE, 1500, 2000)
//.setStyle(bigPictureStyle)
.setWhen(getTimeMilliSec(timeStamp))
.setSmallIcon(iconToUse())
.setLargeIcon(BitmapFactory.decodeResource(mContext.getResources(), icon))
.setContentText(message)
.build();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
notification.bigContentView = assignRemote(bitmap, title, message);
}
NotificationManager notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(Config.NOTIFICATION_ID_BIG_IMAGE, notification);
堆栈跟踪：
android.app.RemoteServiceException: Bad notification posted from package com.goldadorn.main: Couldn't expand RemoteViews for: StatusBarNotification(pkg=com.goldadorn.main user=UserHandle{0} id=101 tag=null score=0 key=0|com.goldadorn.main|101|null|10220: Notification(pri=0 contentView=com.goldadorn.main/0x1090077 vibrate=null sound=android.resource://com.goldadorn.main/raw/notification defaults=0x0 flags=0x11 color=0x00000000 vis=PRIVATE))
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5343)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
附上布局UI外观的截图：
