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app开发中，通知栏通知是比较常见的需求，这里有一个体验细节。弹出通知，用户下拉通知栏，点击后进入app中对应页面，看完后想返回上一页，于是点击了左上角或者右上角的返回按钮(一般来说应该都有)，如果用户是从桌面点击通知进入app的，那么app栈内就没有对应的页面，返回上一页就不能通过常规的销毁当前页面来实现，这时就需要使用TaskStackBuilder了.
TaskStackBuilder，我的理解就是一个栈构建器，在xml里面给activity1配置一个parentActivityName=activity2,那么通过TaskStackBuilder启动activity1时，系统会先把activity2压入栈，然后再启动activity1，这时如果销毁activity1,activity2就会变为栈顶页面呈现在用户面前。这样就模拟出了历史页面效果，体验要比用户点击返回直接回到桌面要好.
public class NotificationUtil {
/**
* 展示通知
*/
public static void showNotifiation(Context context, String title, String content, int nid, PushReceiverModel pushModel) {
StaticMethod.debugEMSG("发送通知到通知栏");
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(context)
.setSmallIcon(R.drawable.push)
.setContentTitle(title)
.setContentText(content);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
Intent resultIntent;
if (StaticVariable.rid != null && !StaticVariable.rid.equals("")) {
if (StaticVariable.rid.equals("3")||StaticVariable.rid.equals("5")) {
if (pushModel.getMessageType().equals(StaticConstant.系统通知)) {
resultIntent = new Intent(context, XSJL_SysytemMsgActivity.class);
stackBuilder.addParentStack(XSJL_SysytemMsgActivity.class);
}else{
resultIntent = new Intent(context, XSJL_MsgBoxActivity.class);
stackBuilder.addParentStack(XSJL_MsgBoxActivity.class);
}
} else if (StaticVariable.rid.equals("6")||StaticVariable.rid.equals("7")) {
if (pushModel.getMessageType().equals(StaticConstant.微信对话)) {
resultIntent = new Intent(context, WeChat_2_Activity.class);
resultIntent.putExtra("cid", pushModel.getUid());
resultIntent.putExtra("title", pushModel.getName());
stackBuilder.addParentStack(WeChat_2_Activity.class);
} else if (pushModel.getMessageType().equals(StaticConstant.销售新用户)) {
resultIntent = new Intent(context, GJXQ_1_Activity.class);
if (StaticMethod.isNotNull(pushModel.getUid())) {
resultIntent.putExtra("cid", pushModel.getUid());
} else {
resultIntent.putExtra("cid", pushModel.getAdvid());
}
stackBuilder.addParentStack(GJXQ_1_Activity.class);
} else if (pushModel.getMessageType().equals(StaticConstant.系统通知)) {
resultIntent = new Intent(context, XSGW_SysytemMsgActivity.class);
stackBuilder.addParentStack(XSGW_SysytemMsgActivity.class);
} else if (pushModel.getMessageType().equals(StaticConstant.抢客户)) {
resultIntent = new Intent(context, MainActivity.class);
} else {
resultIntent = new Intent(context, XSGW_TaskNotifyActivity.class);
stackBuilder.addParentStack(XSGW_TaskNotifyActivity.class);
}
} else {
resultIntent = new Intent(context, LaunchActivity.class);
}
} else {
resultIntent = new Intent(context, LaunchActivity.class);
}
if (stackBuilder.getIntentCount() > 0) {
stackBuilder.editIntentAt(0).putExtra("aid", StaticVariable.aid);
stackBuilder.editIntentAt(0).putExtra("uid", StaticVariable.uid);
}
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT | Intent.FLAG_ACTIVITY_NEW_TASK);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = mBuilder.build();
notification.flags = Notification.FLAG_AUTO_CANCEL;
notification.defaults = Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE;
long[] vibrate = {0, 100, 200, 300};
notification.vibrate = vibrate;
mNotificationManager.notify(nid, notification);
}
}
里面有一个比较容易搞混的地方，就是parentActivity。这里用XSJL_SysytemMsgActivity来举例.
下面就是XSJL_SystemMsgActivity在AndroidManifest.xml里面的声明
<activity
android:name=".page.base.xsjl.activity.XSJL_SysytemMsgActivity"
android:parentActivityName=".page.base.xsjl.activity.MainActivity" />
parentActivityName指定的就是当XSJL_SystemMsgActivity被销毁时，需要显示的历史页面.
在代码里面这么写
resultIntent = new Intent(context, XSJL_SysytemMsgActivity.class);
//resultIntent.putExtra("cid", pushModel.getUid());给XSJL_SysytemMsgActivity页面传递启动参数
//stackBuilder.editIntentAt(0).putExtra("aid", StaticVariable.aid);给parent页面传递启动参数，
stackBuilder.addParentStack(XSJL_SysytemMsgActivity.class);
关键部分就这些，剩下的就是照着官网例子写的。
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT | Intent.FLAG_ACTIVITY_NEW_TASK);
获取到了PendingIntent，历史页面这一块就结束了，剩下的就是通知部分，没什么难点，抄代码改参数就ok了
android notification及TaskStackBuilder
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原文地址：http://www.cnblogs.com/sun-yang-/p/5152053.html
