启动修剪视频活动，意图 [英] Start the trim video activity with an intent

问题描述

我可以采取录像，意图现在什么都是细节，创建一个意图，启动默认的视频微调活动？并检查它是否$设备页码$ psent？

I can take a video with an intent now what are the details to create an intent to start the default video trimmer activity? And check if it present on the device?

推荐答案

该解决方案依赖于一个版本的AOSP库2包被安装在设备上。你可以做到这一点是这样的：

This solution relies on a version of the AOSP Gallery2 package being installed on the device. You can do it like this:

// The Intent action is not yet published as a constant in the Intent class
// This one is served by the com.android.gallery3d.app.TrimVideo activity
// which relies on having the Gallery2 app or a compatible derivative installed
Intent trimVideoIntent = new Intent("com.android.camera.action.TRIM");

// The key for the extra has been discovered from com.android.gallery3d.app.PhotoPage.KEY_MEDIA_ITEM_PATH
trimVideoIntent.putExtra("media-item-path", getFilePathFromVideoURI(this, videoUri));
trimVideoIntent.setData(videoUri);

// Check if the device can handle the Intent
List<ResolveInfo> list = getPackageManager().queryIntentActivities(trimVideoIntent, 0);
if (null != list && list.size() > 0) {
    startActivity(trimVideoIntent); // Fires TrimVideo activity into being active
}

方法 getFilePathFromVideURI 是基于对这个问题的答案：的获取的URI文件名和路径从mediastore

The method getFilePathFromVideURI is based on the answer of this question: Get filename and path from uri from mediastore

public String getFilePathFromVideoURI(Context context, Uri contentUri) {
    Cursor cursor = null;
    try {
        String[] proj = { MediaStore.Video.Media.DATA };
        cursor = context.getContentResolver().query(contentUri,  proj, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    } finally {
        if (cursor != null) {
            cursor.close();
        }
    }
}

videoUri 是乌里指向是这样的：内容：//媒体/外部/视频/媒体/ 43 。您可以通过发出ACTION_PICK意图合一：

videoUri is an Uri pointing to something like this: content://media/external/video/media/43. You can gather one by issuing an ACTION_PICK Intent:

Intent pickVideoUriIntent =  new Intent(Intent.ACTION_PICK, MediaStore.Video.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(pickVideoUriIntent, PICK_VIDEO_REQUEST);

在 onActivityResult 得到URI像这样：

....
case PICK_VIDEO_REQUEST:
    Uri videoUri = data.getData();
     ...

该解决方案适用于我的Galaxy Nexus的采用Android 4.3果冻豆。

This solution works on my Galaxy Nexus with Android 4.3 Jelly Bean.

我不知道这是否适用于所有的Andr​​oid设备。 更可靠的解决方案可能是派生的库2应用程序，并把TrimVideo活动连同其依赖关系，可与您的应用程序交付的图书馆。 希望这有助于反正。

I am not sure if this is available on all Android devices. A more reliable solution may be to fork the Gallery2 app and put the TrimVideo activity together with its dependencies into a library that can be delivered with your app. Hope this helps anyway.

这篇关于启动修剪视频活动，意图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！