android的Notification折叠

android 的Notification 看起来简单，但是api老是改。用的时候确实很麻烦。这里写一个折叠的Demo。
布局文件：activity_main

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="elfstton.cheerchip.com.notifitydemo.MainActivity">    <Button        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="Collapsed"        android:onClick="collapsedNotify" />RelativeLayout>

点击事件，注意api的判断。

  public void collapsedNotify(View view) {        Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.baidu.com"));        PendingIntent pendingIntent=PendingIntent.getActivity(this,0,intent,0);        Notification.Builder builder=new Notification.Builder(this);        builder.setSmallIcon(R.mipmap.ic_launcher);        builder.setContentIntent(pendingIntent);        builder.setAutoCancel(true);        builder.setLargeIcon(BitmapFactory.decodeResource(getResources(),R.mipmap.ic_launcher));        //通过RemoteViews创建自定义视图        RemoteViews  remoteViews=new RemoteViews(getPackageName(),R.layout.mynotification);        remoteViews.setTextViewText(R.id.textView,"可折叠式");        Notification notification= null;        //大于16        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {            notification = builder.build();        }else{            //小于16            notification=builder.getNotification();        }        notification.contentView=remoteViews;        //通过RemoteViews创建自定义的Notification视图        RemoteViews expandedView=new RemoteViews(getPackageName(),R.layout.notification_expanded);        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {            notification.bigContentView=expandedView;        }        NotificationManager nm= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        nm.notify(0,notification);    }

源码下载： https://github.com/AndriodWorld/androidnotification

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