Android 如何从推送通知单击打开图像？

在我的应用程序中，我可以选择捕获屏幕截图，并将其保存在下面的自定义目录中（如/storage/emulated/0/MyApp/screenshots/image.jpeg）

因此，我想应用程序

Pending Intent

，用户可以单击通知，屏幕截图将在某个默认查看器上打开

问题是：如何配置挂起的意图，以便在用户单击通知图像后，在某个默认查看器中打开该图像

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例如：我有一个像素手机，可以选择制作屏幕截图，截图准备好后，我可以点击并打开图像…

最终我找到了这篇文章

 Intent intent = new Intent();
    intent.setAction(android.content.Intent.ACTION_VIEW);
    File file = new File("YOUR_IMAGE"); // set your image path 
    intent.setDataAndType(Uri.fromFile(file), "image/*");

    PendingIntent pIntent = PendingIntent.getActivity(this, 0, intent, 0);

    Notification noti = new NotificationCompat.Builder(this)
            .setContentTitle("Screenshot")
            .setContentText("Image Name")
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentIntent(pIntent).build();

    noti.flags |= Notification.FLAG_AUTO_CANCEL;

    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    notificationManager.notify(0, noti);

这是我得到的

显示

<manifest ...>
<application ...>
    <provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="${applicationId}.provider"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/provider_paths"/>
    </provider>
</application>
</manifest>

代码更改

Intent intent = new Intent();
    intent.setAction(android.content.Intent.ACTION_VIEW);

    File file = new File(iImagePath); // set your image path

    Uri uri = FileProvider.getUriForFile(iC, iC.getApplicationContext().getPackageName() + ".provider", file);
    intent.setDataAndType(uri, "image/*");
    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

    PendingIntent pIntent = PendingIntent.getActivity(iC, 0, intent, 0);

    Bitmap bm = BitmapFactory.decodeFile(iImagePath);

    NotificationCompat.Builder builder = mScreenshotBuilder.setContentTitle(iC.getString(R.string.screenshot_saved))//
                                                           .setContentText(iC.getString(R.string.tap_to_view_your_screenshot))//
                                                           .setContentIntent(pIntent);

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我得到这样的异常

android.os.FileUriExposedException:file:///storage/emulated/0/MyApp/screenshots/image.jpeg 通过Intent.getData（）在应用程序之外公开。

file:///替换为文件：//

Intent intent = new Intent();
    intent.setAction(android.content.Intent.ACTION_VIEW);

    File file = new File(iImagePath); // set your image path

    Uri uri = FileProvider.getUriForFile(iC, iC.getApplicationContext().getPackageName() + ".provider", file);
    intent.setDataAndType(uri, "image/*");
    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

    PendingIntent pIntent = PendingIntent.getActivity(iC, 0, intent, 0);

    Bitmap bm = BitmapFactory.decodeFile(iImagePath);

    NotificationCompat.Builder builder = mScreenshotBuilder.setContentTitle(iC.getString(R.string.screenshot_saved))//
                                                           .setContentText(iC.getString(R.string.tap_to_view_your_screenshot))//
                                                           .setContentIntent(pIntent);