如何使用Glide在Notifications 和 AppWidgets中load图片

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在普通的view中我们可以使用SimpleTarget下载Bitmap图片。那么在Remoteview中该如何使用Glide呢？是否有对应的Target类呢？答案是有的。
下面分开说一下

在 Notifications 中读取图片

在Notification中可以使用NotificationTarget来下载显示图片。
下面来看下具体的代码：

Notification的布局文件

<?xml version="1.0" encoding="utf-8"?>  <LinearLayout      xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:background="@android:color/white"    android:orientation="vertical">        <ImageView            android:id="@+id/remoteview_notification_icon"            android:layout_width="50dp"            android:layout_height="50dp"            android:layout_marginRight="2dp"            android:layout_weight="0"            android:scaleType="centerCrop"/></LinearLayout>

首先是不实用Glide的方式读取图片

final RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.remoteview_notification);rv.setImageViewResource(R.id.remoteview_notification_icon, R.mipmap.future_studio_launcher);// build notificationNotificationCompat.Builder mBuilder =      new NotificationCompat.Builder(context)        .setSmallIcon(R.mipmap.future_studio_launcher)        .setContentTitle("Content Title")        .setContentText("Content Text")        .setContent(rv)        .setPriority( NotificationCompat.PRIORITY_MIN);final Notification notification = mBuilder.build();// set big content view for newer androidsif (android.os.Build.VERSION.SDK_INT >= 16) {      notification.bigContentView = rv;}NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);  mNotificationManager.notify(NOTIFICATION_ID, notification);

我们再来看一下用Glide的方式:

private NotificationTarget notificationTarget;...notificationTarget = new NotificationTarget(      context,    rv,    R.id.remoteview_notification_icon,    notification,    NOTIFICATION_ID);

Glide      .with( context.getApplicationContext() ) // safer!    .load( eatFoodyImages[3] )    .asBitmap()    .into( notificationTarget );

这样就可以使用Glide在Notification中读取图片了。

在 App Widgets 中读取图片

跟Notification类似，在App Widget 中使用AppWidgetTarget来读取图片。具体直接看代码：

public class FSAppWidgetProvider extends AppWidgetProvider {    private AppWidgetTarget appWidgetTarget;    @Override    public void onUpdate(Context context, AppWidgetManager appWidgetManager,                         int[] appWidgetIds) {        RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.custom_view_futurestudio);        appWidgetTarget = new AppWidgetTarget( context, rv, R.id.custom_view_image, appWidgetIds );        Glide                .with( context.getApplicationContext() ) // safer!                .load( GlideExampleActivity.eatFoodyImages[3] )                .asBitmap()                .into( appWidgetTarget );        pushWidgetUpdate(context, rv);    }    public static void pushWidgetUpdate(Context context, RemoteViews rv) {        ComponentName myWidget = new ComponentName(context, FSAppWidgetProvider.class);        AppWidgetManager manager = AppWidgetManager.getInstance(context);        manager.updateAppWidget(myWidget, rv);    }}

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